/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 20:01:03,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 20:01:03,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 20:01:03,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 20:01:03,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 20:01:03,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 20:01:03,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 20:01:03,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 20:01:03,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 20:01:03,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 20:01:03,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 20:01:03,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 20:01:03,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 20:01:03,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 20:01:03,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 20:01:03,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 20:01:03,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 20:01:03,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 20:01:03,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 20:01:03,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 20:01:03,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 20:01:03,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 20:01:03,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 20:01:03,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 20:01:03,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 20:01:03,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 20:01:03,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 20:01:04,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 20:01:04,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 20:01:04,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 20:01:04,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 20:01:04,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 20:01:04,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 20:01:04,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 20:01:04,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 20:01:04,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 20:01:04,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 20:01:04,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 20:01:04,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 20:01:04,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 20:01:04,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 20:01:04,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 20:01:04,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 20:01:04,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 20:01:04,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 20:01:04,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 20:01:04,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 20:01:04,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 20:01:04,038 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 20:01:04,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 20:01:04,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 20:01:04,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 20:01:04,039 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 20:01:04,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:01:04,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 20:01:04,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 20:01:04,041 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 20:01:04,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 20:01:04,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 20:01:04,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 20:01:04,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 20:01:04,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 20:01:04,369 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 20:01:04,371 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 20:01:04,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-06-05 20:01:04,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb37a95b/161cf8b4432742569941bc3132bfcead/FLAG5bf46d978 [2021-06-05 20:01:05,092 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 20:01:05,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2021-06-05 20:01:05,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb37a95b/161cf8b4432742569941bc3132bfcead/FLAG5bf46d978 [2021-06-05 20:01:05,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fb37a95b/161cf8b4432742569941bc3132bfcead [2021-06-05 20:01:05,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 20:01:05,424 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 20:01:05,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 20:01:05,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 20:01:05,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 20:01:05,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:01:05" (1/1) ... [2021-06-05 20:01:05,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9ad95b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:05, skipping insertion in model container [2021-06-05 20:01:05,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 08:01:05" (1/1) ... [2021-06-05 20:01:05,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 20:01:05,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 20:01:05,643 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 20:01:06,022 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2021-06-05 20:01:06,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:01:06,062 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 20:01:06,071 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-05 20:01:06,137 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2021-06-05 20:01:06,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 20:01:06,364 INFO L208 MainTranslator]: Completed translation [2021-06-05 20:01:06,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06 WrapperNode [2021-06-05 20:01:06,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 20:01:06,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 20:01:06,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 20:01:06,366 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 20:01:06,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 20:01:06,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 20:01:06,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 20:01:06,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 20:01:06,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... [2021-06-05 20:01:06,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 20:01:06,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 20:01:06,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 20:01:06,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 20:01:06,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 20:01:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 20:01:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 20:01:06,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 20:01:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 20:01:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-05 20:01:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 20:01:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 20:01:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-06-05 20:01:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-06-05 20:01:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 20:01:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 20:01:06,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 20:01:06,619 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 20:01:07,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 20:01:07,542 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-06-05 20:01:07,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:01:07 BoogieIcfgContainer [2021-06-05 20:01:07,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 20:01:07,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 20:01:07,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 20:01:07,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 20:01:07,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 08:01:05" (1/3) ... [2021-06-05 20:01:07,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380a6fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:01:07, skipping insertion in model container [2021-06-05 20:01:07,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 08:01:06" (2/3) ... [2021-06-05 20:01:07,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380a6fea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 08:01:07, skipping insertion in model container [2021-06-05 20:01:07,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 08:01:07" (3/3) ... [2021-06-05 20:01:07,561 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2021-06-05 20:01:07,578 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 20:01:07,578 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 20:01:07,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-06-05 20:01:07,579 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 20:01:07,616 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,616 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,616 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,616 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,617 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,617 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,617 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,617 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,617 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,618 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,620 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,620 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,620 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,620 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,620 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,621 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,622 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,623 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,623 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,623 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,623 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,623 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,623 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,624 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,624 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,624 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,624 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,624 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,625 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,625 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,625 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,625 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,628 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,628 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,628 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,628 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,628 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,628 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,629 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,629 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,629 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,629 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,630 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,631 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,632 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,632 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,632 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,632 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,632 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,632 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,632 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,633 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,634 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,634 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,634 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,635 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,635 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,636 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,638 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,639 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,639 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,639 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,644 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,645 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,645 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,645 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,645 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,645 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,645 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,645 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,646 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,646 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,646 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,646 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,646 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,646 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,646 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,648 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,649 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,649 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,649 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,649 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,652 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,653 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,654 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,654 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,654 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 20:01:07,682 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 20:01:07,704 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-06-05 20:01:07,731 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 20:01:07,732 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 20:01:07,732 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 20:01:07,732 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 20:01:07,732 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 20:01:07,732 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 20:01:07,732 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 20:01:07,732 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 20:01:07,760 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 143 transitions, 308 flow [2021-06-05 20:01:07,983 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5115 states, 5106 states have (on average 2.781629455542499) internal successors, (14203), 5114 states have internal predecessors, (14203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:08,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 5115 states, 5106 states have (on average 2.781629455542499) internal successors, (14203), 5114 states have internal predecessors, (14203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:08,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 20:01:08,038 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:08,039 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:08,040 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:08,044 INFO L82 PathProgramCache]: Analyzing trace with hash 918719424, now seen corresponding path program 1 times [2021-06-05 20:01:08,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:08,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822459725] [2021-06-05 20:01:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:08,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:08,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:08,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822459725] [2021-06-05 20:01:08,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822459725] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:08,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:08,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:01:08,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88303219] [2021-06-05 20:01:08,525 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 20:01:08,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:08,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 20:01:08,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 20:01:08,570 INFO L87 Difference]: Start difference. First operand has 5115 states, 5106 states have (on average 2.781629455542499) internal successors, (14203), 5114 states have internal predecessors, (14203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:09,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:09,122 INFO L93 Difference]: Finished difference Result 6844 states and 18653 transitions. [2021-06-05 20:01:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 20:01:09,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 20:01:09,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:09,219 INFO L225 Difference]: With dead ends: 6844 [2021-06-05 20:01:09,219 INFO L226 Difference]: Without dead ends: 5725 [2021-06-05 20:01:09,220 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-06-05 20:01:09,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5725 states. [2021-06-05 20:01:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5725 to 4445. [2021-06-05 20:01:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4445 states, 4440 states have (on average 2.713963963963964) internal successors, (12050), 4444 states have internal predecessors, (12050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:09,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4445 states to 4445 states and 12050 transitions. [2021-06-05 20:01:09,487 INFO L78 Accepts]: Start accepts. Automaton has 4445 states and 12050 transitions. Word has length 48 [2021-06-05 20:01:09,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:09,489 INFO L482 AbstractCegarLoop]: Abstraction has 4445 states and 12050 transitions. [2021-06-05 20:01:09,490 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4445 states and 12050 transitions. [2021-06-05 20:01:09,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 20:01:09,497 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:09,497 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:09,497 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 20:01:09,497 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1316640901, now seen corresponding path program 1 times [2021-06-05 20:01:09,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:09,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820818871] [2021-06-05 20:01:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:09,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:09,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:09,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820818871] [2021-06-05 20:01:09,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820818871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:09,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:09,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 20:01:09,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811116885] [2021-06-05 20:01:09,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 20:01:09,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:09,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 20:01:09,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 20:01:09,727 INFO L87 Difference]: Start difference. First operand 4445 states and 12050 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:09,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:09,978 INFO L93 Difference]: Finished difference Result 6161 states and 16560 transitions. [2021-06-05 20:01:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 20:01:09,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-05 20:01:09,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:09,997 INFO L225 Difference]: With dead ends: 6161 [2021-06-05 20:01:09,997 INFO L226 Difference]: Without dead ends: 5231 [2021-06-05 20:01:09,998 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-06-05 20:01:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5231 states. [2021-06-05 20:01:10,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5231 to 5061. [2021-06-05 20:01:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5061 states, 5057 states have (on average 2.716630413288511) internal successors, (13738), 5060 states have internal predecessors, (13738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5061 states to 5061 states and 13738 transitions. [2021-06-05 20:01:10,174 INFO L78 Accepts]: Start accepts. Automaton has 5061 states and 13738 transitions. Word has length 54 [2021-06-05 20:01:10,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:10,175 INFO L482 AbstractCegarLoop]: Abstraction has 5061 states and 13738 transitions. [2021-06-05 20:01:10,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5061 states and 13738 transitions. [2021-06-05 20:01:10,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 20:01:10,183 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:10,183 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:10,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 20:01:10,183 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:10,184 INFO L82 PathProgramCache]: Analyzing trace with hash 612799479, now seen corresponding path program 1 times [2021-06-05 20:01:10,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:10,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625038597] [2021-06-05 20:01:10,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:10,247 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:10,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625038597] [2021-06-05 20:01:10,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625038597] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:10,247 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:10,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 20:01:10,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518975764] [2021-06-05 20:01:10,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 20:01:10,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:10,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 20:01:10,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 20:01:10,250 INFO L87 Difference]: Start difference. First operand 5061 states and 13738 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:10,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:10,282 INFO L93 Difference]: Finished difference Result 1928 states and 5048 transitions. [2021-06-05 20:01:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 20:01:10,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-06-05 20:01:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:10,291 INFO L225 Difference]: With dead ends: 1928 [2021-06-05 20:01:10,291 INFO L226 Difference]: Without dead ends: 1928 [2021-06-05 20:01:10,292 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 20:01:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1928 states. [2021-06-05 20:01:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1928 to 1928. [2021-06-05 20:01:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1926 states have (on average 2.6209761163032192) internal successors, (5048), 1927 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 5048 transitions. [2021-06-05 20:01:10,331 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 5048 transitions. Word has length 66 [2021-06-05 20:01:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:10,333 INFO L482 AbstractCegarLoop]: Abstraction has 1928 states and 5048 transitions. [2021-06-05 20:01:10,333 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:10,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 5048 transitions. [2021-06-05 20:01:10,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:10,337 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:10,337 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:10,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 20:01:10,337 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:10,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:10,338 INFO L82 PathProgramCache]: Analyzing trace with hash -240776193, now seen corresponding path program 1 times [2021-06-05 20:01:10,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:10,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091343616] [2021-06-05 20:01:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:11,830 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:11,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091343616] [2021-06-05 20:01:11,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091343616] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:11,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:11,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-06-05 20:01:11,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804742680] [2021-06-05 20:01:11,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 20:01:11,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 20:01:11,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2021-06-05 20:01:11,832 INFO L87 Difference]: Start difference. First operand 1928 states and 5048 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:15,637 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2021-06-05 20:01:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:15,786 INFO L93 Difference]: Finished difference Result 2975 states and 7729 transitions. [2021-06-05 20:01:15,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 20:01:15,786 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:15,795 INFO L225 Difference]: With dead ends: 2975 [2021-06-05 20:01:15,795 INFO L226 Difference]: Without dead ends: 2945 [2021-06-05 20:01:15,801 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 3081.5ms TimeCoverageRelationStatistics Valid=791, Invalid=3115, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 20:01:15,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2021-06-05 20:01:15,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2870. [2021-06-05 20:01:15,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 2.6359832635983262) internal successors, (7560), 2869 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 7560 transitions. [2021-06-05 20:01:15,917 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 7560 transitions. Word has length 94 [2021-06-05 20:01:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:15,918 INFO L482 AbstractCegarLoop]: Abstraction has 2870 states and 7560 transitions. [2021-06-05 20:01:15,918 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 7560 transitions. [2021-06-05 20:01:15,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:15,922 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:15,922 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:15,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 20:01:15,923 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:15,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1458799697, now seen corresponding path program 1 times [2021-06-05 20:01:15,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:15,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401507704] [2021-06-05 20:01:15,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:16,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:16,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401507704] [2021-06-05 20:01:16,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401507704] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:16,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:16,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:01:16,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911028861] [2021-06-05 20:01:16,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:01:16,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:16,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:01:16,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:01:16,599 INFO L87 Difference]: Start difference. First operand 2870 states and 7560 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:17,026 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 20:01:18,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:18,021 INFO L93 Difference]: Finished difference Result 4814 states and 12411 transitions. [2021-06-05 20:01:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:01:18,021 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:18,050 INFO L225 Difference]: With dead ends: 4814 [2021-06-05 20:01:18,050 INFO L226 Difference]: Without dead ends: 4814 [2021-06-05 20:01:18,050 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1152.1ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:01:18,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4814 states. [2021-06-05 20:01:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4814 to 3367. [2021-06-05 20:01:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3367 states, 3365 states have (on average 2.5895988112927193) internal successors, (8714), 3366 states have internal predecessors, (8714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 8714 transitions. [2021-06-05 20:01:18,125 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 8714 transitions. Word has length 94 [2021-06-05 20:01:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:18,126 INFO L482 AbstractCegarLoop]: Abstraction has 3367 states and 8714 transitions. [2021-06-05 20:01:18,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 8714 transitions. [2021-06-05 20:01:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:18,137 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:18,137 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:18,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 20:01:18,137 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:18,137 INFO L82 PathProgramCache]: Analyzing trace with hash 608810679, now seen corresponding path program 2 times [2021-06-05 20:01:18,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:18,138 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277605241] [2021-06-05 20:01:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:19,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:19,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277605241] [2021-06-05 20:01:19,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277605241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:19,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:19,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:01:19,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779619793] [2021-06-05 20:01:19,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:01:19,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:19,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:01:19,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:01:19,128 INFO L87 Difference]: Start difference. First operand 3367 states and 8714 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:19,832 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2021-06-05 20:01:20,608 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:01:20,843 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:01:21,005 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:21,182 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:01:21,385 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:01:21,642 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:01:21,894 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:01:22,189 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:01:22,477 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:01:22,718 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:01:23,176 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:23,309 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:23,485 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:01:23,729 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:01:24,019 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:01:24,255 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:01:24,520 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:01:25,007 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:01:25,397 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:01:25,545 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:25,798 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:01:26,030 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:26,273 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:01:26,490 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:01:26,886 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:01:27,019 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:27,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:27,024 INFO L93 Difference]: Finished difference Result 7161 states and 17974 transitions. [2021-06-05 20:01:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 20:01:27,025 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:27,051 INFO L225 Difference]: With dead ends: 7161 [2021-06-05 20:01:27,052 INFO L226 Difference]: Without dead ends: 7161 [2021-06-05 20:01:27,052 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 6959.1ms TimeCoverageRelationStatistics Valid=1020, Invalid=2640, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 20:01:27,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7161 states. [2021-06-05 20:01:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7161 to 4645. [2021-06-05 20:01:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4645 states, 4643 states have (on average 2.626319190178764) internal successors, (12194), 4644 states have internal predecessors, (12194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 12194 transitions. [2021-06-05 20:01:27,214 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 12194 transitions. Word has length 94 [2021-06-05 20:01:27,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:27,214 INFO L482 AbstractCegarLoop]: Abstraction has 4645 states and 12194 transitions. [2021-06-05 20:01:27,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:27,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 12194 transitions. [2021-06-05 20:01:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:27,223 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:27,223 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:27,223 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 20:01:27,224 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:27,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:27,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1809812065, now seen corresponding path program 3 times [2021-06-05 20:01:27,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:27,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695817002] [2021-06-05 20:01:27,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:28,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:28,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695817002] [2021-06-05 20:01:28,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695817002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:28,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:28,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:01:28,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123404213] [2021-06-05 20:01:28,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:01:28,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:28,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:01:28,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:01:28,179 INFO L87 Difference]: Start difference. First operand 4645 states and 12194 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:29,076 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:01:29,229 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:01:29,462 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:29,638 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:01:29,789 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:01:30,004 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:01:30,259 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:01:30,502 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:01:30,891 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:31,179 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:01:31,428 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:01:31,690 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:01:31,943 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:01:32,166 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:01:32,412 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:01:32,919 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:01:33,226 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:01:33,589 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:01:33,732 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:33,934 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:01:34,124 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:01:34,250 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:01:34,461 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:01:34,584 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:34,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:34,590 INFO L93 Difference]: Finished difference Result 7721 states and 19133 transitions. [2021-06-05 20:01:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 20:01:34,590 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:34,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:34,605 INFO L225 Difference]: With dead ends: 7721 [2021-06-05 20:01:34,605 INFO L226 Difference]: Without dead ends: 7721 [2021-06-05 20:01:34,606 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 5809.0ms TimeCoverageRelationStatistics Valid=968, Invalid=2572, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 20:01:34,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7721 states. [2021-06-05 20:01:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7721 to 4649. [2021-06-05 20:01:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4647 states have (on average 2.6262104583602324) internal successors, (12204), 4648 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:34,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 12204 transitions. [2021-06-05 20:01:34,703 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 12204 transitions. Word has length 94 [2021-06-05 20:01:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:34,703 INFO L482 AbstractCegarLoop]: Abstraction has 4649 states and 12204 transitions. [2021-06-05 20:01:34,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 12204 transitions. [2021-06-05 20:01:34,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:34,710 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:34,710 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:34,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 20:01:34,710 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:34,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:34,711 INFO L82 PathProgramCache]: Analyzing trace with hash -184622153, now seen corresponding path program 4 times [2021-06-05 20:01:34,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:34,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891436102] [2021-06-05 20:01:34,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:35,414 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:35,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891436102] [2021-06-05 20:01:35,414 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891436102] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:35,414 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:35,414 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:01:35,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801463657] [2021-06-05 20:01:35,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:01:35,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:35,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:01:35,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:01:35,429 INFO L87 Difference]: Start difference. First operand 4649 states and 12204 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:36,465 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:01:36,622 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:01:36,755 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:36,962 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:01:37,151 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:01:37,369 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:01:37,802 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:37,932 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:38,083 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:01:38,231 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:01:38,428 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:01:38,630 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:01:38,865 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:01:39,052 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:01:39,297 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:01:39,756 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:01:40,071 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:01:40,201 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:40,388 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:01:40,523 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:40,687 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:01:40,855 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:01:41,143 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:01:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:41,263 INFO L93 Difference]: Finished difference Result 7883 states and 19505 transitions. [2021-06-05 20:01:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 20:01:41,264 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:41,273 INFO L225 Difference]: With dead ends: 7883 [2021-06-05 20:01:41,273 INFO L226 Difference]: Without dead ends: 7883 [2021-06-05 20:01:41,274 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 5096.3ms TimeCoverageRelationStatistics Valid=918, Invalid=2504, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 20:01:41,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7883 states. [2021-06-05 20:01:41,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7883 to 4657. [2021-06-05 20:01:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4655 states have (on average 2.6259935553168634) internal successors, (12224), 4656 states have internal predecessors, (12224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 12224 transitions. [2021-06-05 20:01:41,362 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 12224 transitions. Word has length 94 [2021-06-05 20:01:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:41,362 INFO L482 AbstractCegarLoop]: Abstraction has 4657 states and 12224 transitions. [2021-06-05 20:01:41,362 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 12224 transitions. [2021-06-05 20:01:41,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:41,370 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:41,370 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:41,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 20:01:41,370 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:41,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:41,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1732609481, now seen corresponding path program 5 times [2021-06-05 20:01:41,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:41,371 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891511014] [2021-06-05 20:01:41,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:42,046 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:42,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891511014] [2021-06-05 20:01:42,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891511014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:42,046 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:42,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:01:42,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557881186] [2021-06-05 20:01:42,047 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:01:42,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:42,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:01:42,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:01:42,048 INFO L87 Difference]: Start difference. First operand 4657 states and 12224 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:43,062 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:01:43,212 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:43,409 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:01:43,866 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:01:44,023 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:44,162 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:44,341 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:01:44,530 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:01:44,747 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:01:44,959 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:01:45,196 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:01:45,405 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:01:45,640 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:01:46,048 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:01:46,178 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:01:46,339 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:01:46,622 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:01:46,749 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:46,894 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:01:47,069 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:01:47,347 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:01:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:47,473 INFO L93 Difference]: Finished difference Result 8045 states and 19877 transitions. [2021-06-05 20:01:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 20:01:47,473 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:47,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:47,481 INFO L225 Difference]: With dead ends: 8045 [2021-06-05 20:01:47,481 INFO L226 Difference]: Without dead ends: 8045 [2021-06-05 20:01:47,482 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 4811.0ms TimeCoverageRelationStatistics Valid=870, Invalid=2436, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 20:01:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8045 states. [2021-06-05 20:01:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8045 to 4661. [2021-06-05 20:01:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4661 states, 4659 states have (on average 2.625885383129427) internal successors, (12234), 4660 states have internal predecessors, (12234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:47,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4661 states to 4661 states and 12234 transitions. [2021-06-05 20:01:47,561 INFO L78 Accepts]: Start accepts. Automaton has 4661 states and 12234 transitions. Word has length 94 [2021-06-05 20:01:47,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:47,561 INFO L482 AbstractCegarLoop]: Abstraction has 4661 states and 12234 transitions. [2021-06-05 20:01:47,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:47,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4661 states and 12234 transitions. [2021-06-05 20:01:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:47,569 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:47,570 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:47,570 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 20:01:47,570 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:47,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:47,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1417459553, now seen corresponding path program 6 times [2021-06-05 20:01:47,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:47,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682929338] [2021-06-05 20:01:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:48,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:48,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:48,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682929338] [2021-06-05 20:01:48,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682929338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:48,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:48,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:01:48,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62615231] [2021-06-05 20:01:48,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:01:48,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:48,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:01:48,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:01:48,229 INFO L87 Difference]: Start difference. First operand 4661 states and 12234 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:49,219 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:49,631 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:49,788 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:01:49,951 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:50,245 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:01:50,420 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:01:50,620 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:01:50,825 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:01:51,032 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:01:51,211 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:01:51,438 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:01:51,820 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:01:52,000 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:01:52,144 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:01:52,288 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:01:52,524 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:01:52,781 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:52,911 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:53,054 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:01:53,181 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:01:53,327 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:01:53,453 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:01:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:53,458 INFO L93 Difference]: Finished difference Result 7507 states and 18726 transitions. [2021-06-05 20:01:53,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 20:01:53,458 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:53,474 INFO L225 Difference]: With dead ends: 7507 [2021-06-05 20:01:53,474 INFO L226 Difference]: Without dead ends: 7507 [2021-06-05 20:01:53,475 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 4815.0ms TimeCoverageRelationStatistics Valid=824, Invalid=2368, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 20:01:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7507 states. [2021-06-05 20:01:53,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7507 to 4649. [2021-06-05 20:01:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4647 states have (on average 2.6262104583602324) internal successors, (12204), 4648 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:53,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 12204 transitions. [2021-06-05 20:01:53,603 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 12204 transitions. Word has length 94 [2021-06-05 20:01:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:53,604 INFO L482 AbstractCegarLoop]: Abstraction has 4649 states and 12204 transitions. [2021-06-05 20:01:53,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 12204 transitions. [2021-06-05 20:01:53,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:53,611 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:53,611 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:53,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 20:01:53,611 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:53,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:53,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1712244349, now seen corresponding path program 7 times [2021-06-05 20:01:53,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:53,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190555240] [2021-06-05 20:01:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:54,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:54,142 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:54,142 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190555240] [2021-06-05 20:01:54,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190555240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:54,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:54,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:01:54,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656960510] [2021-06-05 20:01:54,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:01:54,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:01:54,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:01:54,145 INFO L87 Difference]: Start difference. First operand 4649 states and 12204 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:54,743 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2021-06-05 20:01:55,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:55,146 INFO L93 Difference]: Finished difference Result 5994 states and 15241 transitions. [2021-06-05 20:01:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 20:01:55,146 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:55,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:55,154 INFO L225 Difference]: With dead ends: 5994 [2021-06-05 20:01:55,154 INFO L226 Difference]: Without dead ends: 5994 [2021-06-05 20:01:55,154 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1084.2ms TimeCoverageRelationStatistics Valid=311, Invalid=745, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 20:01:55,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2021-06-05 20:01:55,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 4649. [2021-06-05 20:01:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4649 states, 4647 states have (on average 2.6262104583602324) internal successors, (12204), 4648 states have internal predecessors, (12204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:55,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4649 states to 4649 states and 12204 transitions. [2021-06-05 20:01:55,311 INFO L78 Accepts]: Start accepts. Automaton has 4649 states and 12204 transitions. Word has length 94 [2021-06-05 20:01:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:55,312 INFO L482 AbstractCegarLoop]: Abstraction has 4649 states and 12204 transitions. [2021-06-05 20:01:55,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4649 states and 12204 transitions. [2021-06-05 20:01:55,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:55,321 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:55,321 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:55,322 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 20:01:55,322 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:55,322 INFO L82 PathProgramCache]: Analyzing trace with hash -186806265, now seen corresponding path program 8 times [2021-06-05 20:01:55,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:55,322 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632576232] [2021-06-05 20:01:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:55,773 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:55,773 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632576232] [2021-06-05 20:01:55,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632576232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:55,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:55,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:01:55,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902155749] [2021-06-05 20:01:55,774 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:01:55,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:55,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:01:55,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:01:55,774 INFO L87 Difference]: Start difference. First operand 4649 states and 12204 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:56,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:56,922 INFO L93 Difference]: Finished difference Result 5932 states and 14931 transitions. [2021-06-05 20:01:56,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:01:56,922 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:56,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:56,926 INFO L225 Difference]: With dead ends: 5932 [2021-06-05 20:01:56,926 INFO L226 Difference]: Without dead ends: 5932 [2021-06-05 20:01:56,927 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1086.9ms TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:01:56,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5932 states. [2021-06-05 20:01:57,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5932 to 4599. [2021-06-05 20:01:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4597 states have (on average 2.6249728083532737) internal successors, (12067), 4598 states have internal predecessors, (12067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 12067 transitions. [2021-06-05 20:01:57,049 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 12067 transitions. Word has length 94 [2021-06-05 20:01:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:57,049 INFO L482 AbstractCegarLoop]: Abstraction has 4599 states and 12067 transitions. [2021-06-05 20:01:57,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 12067 transitions. [2021-06-05 20:01:57,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:57,056 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:57,056 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:57,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 20:01:57,056 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:57,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:57,056 INFO L82 PathProgramCache]: Analyzing trace with hash -938424673, now seen corresponding path program 9 times [2021-06-05 20:01:57,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:57,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125964284] [2021-06-05 20:01:57,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:57,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:57,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125964284] [2021-06-05 20:01:57,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125964284] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:57,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:57,595 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:01:57,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450145282] [2021-06-05 20:01:57,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:01:57,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:57,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:01:57,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:01:57,595 INFO L87 Difference]: Start difference. First operand 4599 states and 12067 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:58,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:01:58,844 INFO L93 Difference]: Finished difference Result 5870 states and 14664 transitions. [2021-06-05 20:01:58,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:01:58,845 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:01:58,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:01:58,850 INFO L225 Difference]: With dead ends: 5870 [2021-06-05 20:01:58,850 INFO L226 Difference]: Without dead ends: 5870 [2021-06-05 20:01:58,851 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1244.3ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:01:58,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2021-06-05 20:01:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 4549. [2021-06-05 20:01:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4549 states, 4547 states have (on average 2.6237079393006377) internal successors, (11930), 4548 states have internal predecessors, (11930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4549 states to 4549 states and 11930 transitions. [2021-06-05 20:01:58,923 INFO L78 Accepts]: Start accepts. Automaton has 4549 states and 11930 transitions. Word has length 94 [2021-06-05 20:01:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:01:58,923 INFO L482 AbstractCegarLoop]: Abstraction has 4549 states and 11930 transitions. [2021-06-05 20:01:58,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:01:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 4549 states and 11930 transitions. [2021-06-05 20:01:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:01:58,929 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:01:58,929 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:01:58,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 20:01:58,929 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:01:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:01:58,929 INFO L82 PathProgramCache]: Analyzing trace with hash -356783737, now seen corresponding path program 10 times [2021-06-05 20:01:58,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:01:58,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082895451] [2021-06-05 20:01:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:01:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:01:59,282 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-05 20:01:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:01:59,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:01:59,557 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082895451] [2021-06-05 20:01:59,557 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082895451] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:01:59,557 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:01:59,557 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:01:59,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383428503] [2021-06-05 20:01:59,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:01:59,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:01:59,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:01:59,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:01:59,559 INFO L87 Difference]: Start difference. First operand 4549 states and 11930 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:00,140 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-06-05 20:02:00,265 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-06-05 20:02:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:00,731 INFO L93 Difference]: Finished difference Result 5985 states and 14912 transitions. [2021-06-05 20:02:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:02:00,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:00,737 INFO L225 Difference]: With dead ends: 5985 [2021-06-05 20:02:00,737 INFO L226 Difference]: Without dead ends: 5985 [2021-06-05 20:02:00,738 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1190.8ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:02:00,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5985 states. [2021-06-05 20:02:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5985 to 4449. [2021-06-05 20:02:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4449 states, 4447 states have (on average 2.621092871598831) internal successors, (11656), 4448 states have internal predecessors, (11656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4449 states to 4449 states and 11656 transitions. [2021-06-05 20:02:00,882 INFO L78 Accepts]: Start accepts. Automaton has 4449 states and 11656 transitions. Word has length 94 [2021-06-05 20:02:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:00,882 INFO L482 AbstractCegarLoop]: Abstraction has 4449 states and 11656 transitions. [2021-06-05 20:02:00,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4449 states and 11656 transitions. [2021-06-05 20:02:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:00,888 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:00,904 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:00,905 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 20:02:00,905 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:00,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:00,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1061403897, now seen corresponding path program 11 times [2021-06-05 20:02:00,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:00,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038615307] [2021-06-05 20:02:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:01,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:01,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038615307] [2021-06-05 20:02:01,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038615307] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:01,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:01,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:02:01,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260463779] [2021-06-05 20:02:01,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:02:01,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:01,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:02:01,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:02:01,425 INFO L87 Difference]: Start difference. First operand 4449 states and 11656 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:02,037 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-06-05 20:02:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:02,611 INFO L93 Difference]: Finished difference Result 6011 states and 14931 transitions. [2021-06-05 20:02:02,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:02:02,611 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:02,616 INFO L225 Difference]: With dead ends: 6011 [2021-06-05 20:02:02,616 INFO L226 Difference]: Without dead ends: 6011 [2021-06-05 20:02:02,616 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1137.9ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:02:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2021-06-05 20:02:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 4399. [2021-06-05 20:02:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4397 states have (on average 2.619740732317489) internal successors, (11519), 4398 states have internal predecessors, (11519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 11519 transitions. [2021-06-05 20:02:02,713 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 11519 transitions. Word has length 94 [2021-06-05 20:02:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:02,713 INFO L482 AbstractCegarLoop]: Abstraction has 4399 states and 11519 transitions. [2021-06-05 20:02:02,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 11519 transitions. [2021-06-05 20:02:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:02,725 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:02,725 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:02,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 20:02:02,725 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:02,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1559630751, now seen corresponding path program 12 times [2021-06-05 20:02:02,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:02,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901970975] [2021-06-05 20:02:02,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:03,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:03,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901970975] [2021-06-05 20:02:03,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901970975] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:03,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:03,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:02:03,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786315366] [2021-06-05 20:02:03,061 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:02:03,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:03,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:02:03,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:02:03,062 INFO L87 Difference]: Start difference. First operand 4399 states and 11519 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:04,099 INFO L93 Difference]: Finished difference Result 5201 states and 13159 transitions. [2021-06-05 20:02:04,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 20:02:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:04,105 INFO L225 Difference]: With dead ends: 5201 [2021-06-05 20:02:04,105 INFO L226 Difference]: Without dead ends: 5201 [2021-06-05 20:02:04,106 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 875.7ms TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:02:04,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2021-06-05 20:02:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 4109. [2021-06-05 20:02:04,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4107 states have (on average 2.634526418310202) internal successors, (10820), 4108 states have internal predecessors, (10820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 10820 transitions. [2021-06-05 20:02:04,182 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 10820 transitions. Word has length 94 [2021-06-05 20:02:04,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:04,182 INFO L482 AbstractCegarLoop]: Abstraction has 4109 states and 10820 transitions. [2021-06-05 20:02:04,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 10820 transitions. [2021-06-05 20:02:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:04,211 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:04,212 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:04,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 20:02:04,212 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash 891391129, now seen corresponding path program 13 times [2021-06-05 20:02:04,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:04,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230994190] [2021-06-05 20:02:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:04,829 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-05 20:02:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:05,433 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:05,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230994190] [2021-06-05 20:02:05,434 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230994190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:05,434 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:05,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:02:05,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973859226] [2021-06-05 20:02:05,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:02:05,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:05,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:02:05,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:02:05,435 INFO L87 Difference]: Start difference. First operand 4109 states and 10820 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:06,321 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 20:02:06,461 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 20:02:06,616 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:02:06,789 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 20:02:06,937 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:02:07,131 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:02:07,336 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 20:02:07,581 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:02:07,770 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:02:08,035 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:02:08,393 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:08,672 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:02:08,883 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:09,143 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:02:09,384 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2021-06-05 20:02:09,877 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-06-05 20:02:10,136 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:02:10,389 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-06-05 20:02:10,738 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2021-06-05 20:02:10,919 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:11,152 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2021-06-05 20:02:11,271 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:02:11,496 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:02:11,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:11,618 INFO L93 Difference]: Finished difference Result 6860 states and 17295 transitions. [2021-06-05 20:02:11,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 20:02:11,619 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:11,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:11,624 INFO L225 Difference]: With dead ends: 6860 [2021-06-05 20:02:11,624 INFO L226 Difference]: Without dead ends: 6860 [2021-06-05 20:02:11,625 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 5947.8ms TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 20:02:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2021-06-05 20:02:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 3953. [2021-06-05 20:02:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 3951 states have (on average 2.6504682358896483) internal successors, (10472), 3952 states have internal predecessors, (10472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:11,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 10472 transitions. [2021-06-05 20:02:11,686 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 10472 transitions. Word has length 94 [2021-06-05 20:02:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:11,686 INFO L482 AbstractCegarLoop]: Abstraction has 3953 states and 10472 transitions. [2021-06-05 20:02:11,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:11,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 10472 transitions. [2021-06-05 20:02:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:11,691 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:11,691 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:11,691 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 20:02:11,691 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:11,691 INFO L82 PathProgramCache]: Analyzing trace with hash 814259131, now seen corresponding path program 14 times [2021-06-05 20:02:11,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:11,692 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039302384] [2021-06-05 20:02:11,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:12,024 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-06-05 20:02:12,315 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-06-05 20:02:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:12,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:12,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039302384] [2021-06-05 20:02:12,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039302384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:12,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:12,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:02:12,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735330710] [2021-06-05 20:02:12,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:02:12,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:12,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:02:12,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:02:12,714 INFO L87 Difference]: Start difference. First operand 3953 states and 10472 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:13,699 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 20:02:13,826 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:02:13,991 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 20:02:14,156 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:02:14,356 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:02:14,550 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 20:02:14,788 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:02:14,964 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:02:15,192 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:02:15,603 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:15,885 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:02:16,098 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:16,364 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:02:16,573 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:02:16,810 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:02:17,256 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:02:17,603 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:02:17,982 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2021-06-05 20:02:18,189 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:18,412 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:02:18,533 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:02:18,752 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:02:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:18,876 INFO L93 Difference]: Finished difference Result 6289 states and 15802 transitions. [2021-06-05 20:02:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 20:02:18,876 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:18,882 INFO L225 Difference]: With dead ends: 6289 [2021-06-05 20:02:18,882 INFO L226 Difference]: Without dead ends: 6289 [2021-06-05 20:02:18,883 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 5874.8ms TimeCoverageRelationStatistics Valid=994, Invalid=2546, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 20:02:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2021-06-05 20:02:18,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 3905. [2021-06-05 20:02:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3903 states have (on average 2.646169613118114) internal successors, (10328), 3904 states have internal predecessors, (10328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 10328 transitions. [2021-06-05 20:02:18,986 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 10328 transitions. Word has length 94 [2021-06-05 20:02:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:18,987 INFO L482 AbstractCegarLoop]: Abstraction has 3905 states and 10328 transitions. [2021-06-05 20:02:18,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 10328 transitions. [2021-06-05 20:02:18,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:18,991 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:18,991 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:18,991 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 20:02:18,991 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:18,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:19,000 INFO L82 PathProgramCache]: Analyzing trace with hash -985219549, now seen corresponding path program 15 times [2021-06-05 20:02:19,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:19,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709592894] [2021-06-05 20:02:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:19,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:19,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709592894] [2021-06-05 20:02:19,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709592894] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:19,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:19,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:02:19,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869505031] [2021-06-05 20:02:19,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:02:19,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:02:19,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:02:19,807 INFO L87 Difference]: Start difference. First operand 3905 states and 10328 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:20,735 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 20:02:20,870 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:02:21,061 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 20:02:21,364 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:02:21,550 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:02:21,770 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 20:02:22,028 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:02:22,439 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:22,573 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 20:02:22,758 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:02:22,979 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:23,198 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:02:23,430 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:02:23,622 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:02:23,870 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-06-05 20:02:24,298 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 20:02:24,607 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:02:24,729 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:02:24,928 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:02:25,055 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:25,252 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:02:25,453 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-06-05 20:02:25,765 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:02:25,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:25,886 INFO L93 Difference]: Finished difference Result 7394 states and 18416 transitions. [2021-06-05 20:02:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 20:02:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:25,892 INFO L225 Difference]: With dead ends: 7394 [2021-06-05 20:02:25,892 INFO L226 Difference]: Without dead ends: 7394 [2021-06-05 20:02:25,893 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 5590.0ms TimeCoverageRelationStatistics Valid=975, Invalid=2565, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 20:02:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7394 states. [2021-06-05 20:02:25,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7394 to 3857. [2021-06-05 20:02:25,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3857 states, 3855 states have (on average 2.641763942931258) internal successors, (10184), 3856 states have internal predecessors, (10184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 10184 transitions. [2021-06-05 20:02:25,951 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 10184 transitions. Word has length 94 [2021-06-05 20:02:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:25,951 INFO L482 AbstractCegarLoop]: Abstraction has 3857 states and 10184 transitions. [2021-06-05 20:02:25,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 10184 transitions. [2021-06-05 20:02:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:25,955 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:25,955 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:25,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 20:02:25,955 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:25,955 INFO L82 PathProgramCache]: Analyzing trace with hash 781832763, now seen corresponding path program 16 times [2021-06-05 20:02:25,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:25,956 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324863013] [2021-06-05 20:02:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:26,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:26,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324863013] [2021-06-05 20:02:26,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324863013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:26,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:26,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:02:26,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319400859] [2021-06-05 20:02:26,948 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:02:26,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:26,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:02:26,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:02:26,949 INFO L87 Difference]: Start difference. First operand 3857 states and 10184 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:27,787 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 20:02:27,941 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 20:02:28,071 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:02:28,242 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 20:02:28,414 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:02:28,638 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:02:29,095 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:29,366 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:02:29,520 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:02:29,724 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:29,933 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:02:30,159 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:02:30,349 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:02:30,591 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-06-05 20:02:31,106 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-06-05 20:02:31,401 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:02:31,526 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:02:31,734 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:02:32,006 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:02:32,205 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:02:32,499 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:32,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:32,620 INFO L93 Difference]: Finished difference Result 7506 states and 18674 transitions. [2021-06-05 20:02:32,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 20:02:32,620 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:32,626 INFO L225 Difference]: With dead ends: 7506 [2021-06-05 20:02:32,627 INFO L226 Difference]: Without dead ends: 7506 [2021-06-05 20:02:32,627 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 5136.6ms TimeCoverageRelationStatistics Valid=925, Invalid=2497, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 20:02:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2021-06-05 20:02:32,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 3761. [2021-06-05 20:02:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3759 states have (on average 2.632615057196063) internal successors, (9896), 3760 states have internal predecessors, (9896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 9896 transitions. [2021-06-05 20:02:32,688 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 9896 transitions. Word has length 94 [2021-06-05 20:02:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:32,688 INFO L482 AbstractCegarLoop]: Abstraction has 3761 states and 9896 transitions. [2021-06-05 20:02:32,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 9896 transitions. [2021-06-05 20:02:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:32,692 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:32,692 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:32,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 20:02:32,692 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:32,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:32,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1052178245, now seen corresponding path program 17 times [2021-06-05 20:02:32,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:32,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961996764] [2021-06-05 20:02:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:33,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:33,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961996764] [2021-06-05 20:02:33,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961996764] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:33,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:33,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:02:33,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368721763] [2021-06-05 20:02:33,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:02:33,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:33,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:02:33,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:02:33,382 INFO L87 Difference]: Start difference. First operand 3761 states and 9896 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:34,265 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 20:02:34,427 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 20:02:34,575 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:02:34,734 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:02:35,120 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 20:02:35,260 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:35,543 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:02:35,696 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:02:35,900 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:36,129 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:02:36,353 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:02:36,539 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:02:36,799 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-06-05 20:02:37,206 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:02:37,475 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:02:37,779 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:02:37,906 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:38,049 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 20:02:38,206 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 20:02:38,326 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:02:38,481 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:02:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:38,598 INFO L93 Difference]: Finished difference Result 7643 states and 18989 transitions. [2021-06-05 20:02:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 20:02:38,598 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:38,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:38,604 INFO L225 Difference]: With dead ends: 7643 [2021-06-05 20:02:38,604 INFO L226 Difference]: Without dead ends: 7643 [2021-06-05 20:02:38,605 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 4762.6ms TimeCoverageRelationStatistics Valid=877, Invalid=2429, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 20:02:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7643 states. [2021-06-05 20:02:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7643 to 3713. [2021-06-05 20:02:38,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3713 states, 3711 states have (on average 2.6278631096739424) internal successors, (9752), 3712 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3713 states to 3713 states and 9752 transitions. [2021-06-05 20:02:38,665 INFO L78 Accepts]: Start accepts. Automaton has 3713 states and 9752 transitions. Word has length 94 [2021-06-05 20:02:38,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:38,670 INFO L482 AbstractCegarLoop]: Abstraction has 3713 states and 9752 transitions. [2021-06-05 20:02:38,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:38,670 INFO L276 IsEmpty]: Start isEmpty. Operand 3713 states and 9752 transitions. [2021-06-05 20:02:38,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:38,675 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:38,675 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:38,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 20:02:38,675 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:38,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash -314420957, now seen corresponding path program 18 times [2021-06-05 20:02:38,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:38,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626339136] [2021-06-05 20:02:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:39,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:39,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626339136] [2021-06-05 20:02:39,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626339136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:39,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:39,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:02:39,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131941705] [2021-06-05 20:02:39,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:02:39,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:39,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:02:39,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:02:39,318 INFO L87 Difference]: Start difference. First operand 3713 states and 9752 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:40,590 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 20:02:40,728 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 20:02:40,876 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:41,159 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:02:41,342 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:02:41,544 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:41,803 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:02:42,043 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:02:42,229 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:02:42,475 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-06-05 20:02:43,058 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:02:43,322 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:02:43,459 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:43,587 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 20:02:43,905 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:02:44,199 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:02:44,338 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:02:44,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:44,461 INFO L93 Difference]: Finished difference Result 6978 states and 17564 transitions. [2021-06-05 20:02:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 20:02:44,461 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:44,468 INFO L225 Difference]: With dead ends: 6978 [2021-06-05 20:02:44,468 INFO L226 Difference]: Without dead ends: 6978 [2021-06-05 20:02:44,470 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 4811.0ms TimeCoverageRelationStatistics Valid=831, Invalid=2361, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 20:02:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2021-06-05 20:02:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 3587. [2021-06-05 20:02:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3587 states, 3585 states have (on average 2.6304044630404464) internal successors, (9430), 3586 states have internal predecessors, (9430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3587 states to 3587 states and 9430 transitions. [2021-06-05 20:02:44,532 INFO L78 Accepts]: Start accepts. Automaton has 3587 states and 9430 transitions. Word has length 94 [2021-06-05 20:02:44,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:44,532 INFO L482 AbstractCegarLoop]: Abstraction has 3587 states and 9430 transitions. [2021-06-05 20:02:44,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:44,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3587 states and 9430 transitions. [2021-06-05 20:02:44,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:44,537 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:44,542 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:44,542 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 20:02:44,542 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:44,542 INFO L82 PathProgramCache]: Analyzing trace with hash 689241785, now seen corresponding path program 2 times [2021-06-05 20:02:44,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:44,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868408721] [2021-06-05 20:02:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:45,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:45,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868408721] [2021-06-05 20:02:45,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868408721] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:45,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:45,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-06-05 20:02:45,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838919842] [2021-06-05 20:02:45,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 20:02:45,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:45,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 20:02:45,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-06-05 20:02:45,478 INFO L87 Difference]: Start difference. First operand 3587 states and 9430 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:49,448 INFO L93 Difference]: Finished difference Result 6087 states and 15808 transitions. [2021-06-05 20:02:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 20:02:49,448 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:49,458 INFO L225 Difference]: With dead ends: 6087 [2021-06-05 20:02:49,459 INFO L226 Difference]: Without dead ends: 6014 [2021-06-05 20:02:49,460 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 2940.2ms TimeCoverageRelationStatistics Valid=1048, Invalid=4064, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 20:02:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2021-06-05 20:02:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 4435. [2021-06-05 20:02:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4435 states, 4433 states have (on average 2.656665914730431) internal successors, (11777), 4434 states have internal predecessors, (11777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:49,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4435 states to 4435 states and 11777 transitions. [2021-06-05 20:02:49,526 INFO L78 Accepts]: Start accepts. Automaton has 4435 states and 11777 transitions. Word has length 94 [2021-06-05 20:02:49,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:49,526 INFO L482 AbstractCegarLoop]: Abstraction has 4435 states and 11777 transitions. [2021-06-05 20:02:49,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4435 states and 11777 transitions. [2021-06-05 20:02:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:49,533 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:49,533 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:49,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 20:02:49,533 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash -76295461, now seen corresponding path program 19 times [2021-06-05 20:02:49,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:49,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790323230] [2021-06-05 20:02:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:49,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:49,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790323230] [2021-06-05 20:02:49,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790323230] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:49,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:49,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:02:49,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694293389] [2021-06-05 20:02:49,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:02:49,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:49,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:02:49,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:02:49,885 INFO L87 Difference]: Start difference. First operand 4435 states and 11777 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:50,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:50,977 INFO L93 Difference]: Finished difference Result 5233 states and 13352 transitions. [2021-06-05 20:02:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:02:50,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:50,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:50,985 INFO L225 Difference]: With dead ends: 5233 [2021-06-05 20:02:50,985 INFO L226 Difference]: Without dead ends: 5233 [2021-06-05 20:02:50,985 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 967.1ms TimeCoverageRelationStatistics Valid=325, Invalid=865, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:02:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2021-06-05 20:02:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 4456. [2021-06-05 20:02:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4454 states have (on average 2.6553659631791646) internal successors, (11827), 4455 states have internal predecessors, (11827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:51,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 11827 transitions. [2021-06-05 20:02:51,070 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 11827 transitions. Word has length 94 [2021-06-05 20:02:51,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:51,070 INFO L482 AbstractCegarLoop]: Abstraction has 4456 states and 11827 transitions. [2021-06-05 20:02:51,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:51,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 11827 transitions. [2021-06-05 20:02:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:51,075 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:51,075 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:51,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 20:02:51,076 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:51,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1290428557, now seen corresponding path program 20 times [2021-06-05 20:02:51,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:51,076 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200248252] [2021-06-05 20:02:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:51,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:51,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200248252] [2021-06-05 20:02:51,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200248252] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:51,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:51,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:02:51,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912193890] [2021-06-05 20:02:51,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:02:51,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:51,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:02:51,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:02:51,586 INFO L87 Difference]: Start difference. First operand 4456 states and 11827 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:52,492 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:02:52,709 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:02:52,894 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:02:53,289 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:02:53,499 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:02:53,713 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:02:54,012 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:02:54,243 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:02:54,450 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:02:54,643 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:02:54,808 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:02:54,995 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:02:55,183 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:02:55,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:55,196 INFO L93 Difference]: Finished difference Result 6769 states and 17319 transitions. [2021-06-05 20:02:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:02:55,196 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:55,203 INFO L225 Difference]: With dead ends: 6769 [2021-06-05 20:02:55,203 INFO L226 Difference]: Without dead ends: 6769 [2021-06-05 20:02:55,204 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3246.5ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:02:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6769 states. [2021-06-05 20:02:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6769 to 4564. [2021-06-05 20:02:55,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4562 states have (on average 2.662209557211749) internal successors, (12145), 4563 states have internal predecessors, (12145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:55,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 12145 transitions. [2021-06-05 20:02:55,301 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 12145 transitions. Word has length 94 [2021-06-05 20:02:55,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:02:55,301 INFO L482 AbstractCegarLoop]: Abstraction has 4564 states and 12145 transitions. [2021-06-05 20:02:55,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:55,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 12145 transitions. [2021-06-05 20:02:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:02:55,306 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:02:55,306 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:02:55,306 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 20:02:55,306 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:02:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:02:55,306 INFO L82 PathProgramCache]: Analyzing trace with hash -223903799, now seen corresponding path program 3 times [2021-06-05 20:02:55,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:02:55,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648524543] [2021-06-05 20:02:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:02:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:02:55,722 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-06-05 20:02:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:02:56,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:02:56,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648524543] [2021-06-05 20:02:56,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648524543] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:02:56,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:02:56,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-06-05 20:02:56,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529881589] [2021-06-05 20:02:56,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 20:02:56,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:02:56,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 20:02:56,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-06-05 20:02:56,285 INFO L87 Difference]: Start difference. First operand 4564 states and 12145 transitions. Second operand has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:02:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:02:59,932 INFO L93 Difference]: Finished difference Result 6578 states and 17122 transitions. [2021-06-05 20:02:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 20:02:59,932 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:02:59,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:02:59,945 INFO L225 Difference]: With dead ends: 6578 [2021-06-05 20:02:59,945 INFO L226 Difference]: Without dead ends: 6524 [2021-06-05 20:02:59,946 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 2754.4ms TimeCoverageRelationStatistics Valid=827, Invalid=3333, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 20:02:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6524 states. [2021-06-05 20:03:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6524 to 4924. [2021-06-05 20:03:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 4922 states have (on average 2.6625355546525804) internal successors, (13105), 4923 states have internal predecessors, (13105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 13105 transitions. [2021-06-05 20:03:00,014 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 13105 transitions. Word has length 94 [2021-06-05 20:03:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:00,014 INFO L482 AbstractCegarLoop]: Abstraction has 4924 states and 13105 transitions. [2021-06-05 20:03:00,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:00,014 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 13105 transitions. [2021-06-05 20:03:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:00,019 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:00,019 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:00,019 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 20:03:00,019 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1000323179, now seen corresponding path program 21 times [2021-06-05 20:03:00,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:00,020 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941061942] [2021-06-05 20:03:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:00,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:00,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:00,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941061942] [2021-06-05 20:03:00,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941061942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:00,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:00,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:00,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360699508] [2021-06-05 20:03:00,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:00,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:00,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:00,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:00,520 INFO L87 Difference]: Start difference. First operand 4924 states and 13105 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:01,387 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:03:01,574 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:03:01,756 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:03:01,957 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:03:02,206 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:03:02,581 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:03:02,785 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:03:03,108 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:03:03,315 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:03:03,517 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:03:03,715 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:03:03,913 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:03:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:03,920 INFO L93 Difference]: Finished difference Result 8125 states and 20883 transitions. [2021-06-05 20:03:03,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:03:03,920 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:03,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:03,929 INFO L225 Difference]: With dead ends: 8125 [2021-06-05 20:03:03,929 INFO L226 Difference]: Without dead ends: 8125 [2021-06-05 20:03:03,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3078.6ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:03:03,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8125 states. [2021-06-05 20:03:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8125 to 4564. [2021-06-05 20:03:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4562 states have (on average 2.662209557211749) internal successors, (12145), 4563 states have internal predecessors, (12145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 12145 transitions. [2021-06-05 20:03:04,032 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 12145 transitions. Word has length 94 [2021-06-05 20:03:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:04,032 INFO L482 AbstractCegarLoop]: Abstraction has 4564 states and 12145 transitions. [2021-06-05 20:03:04,032 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 12145 transitions. [2021-06-05 20:03:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:04,036 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:04,037 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:04,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 20:03:04,037 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:04,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:04,037 INFO L82 PathProgramCache]: Analyzing trace with hash -672432475, now seen corresponding path program 22 times [2021-06-05 20:03:04,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:04,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205085608] [2021-06-05 20:03:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:04,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:04,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:04,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:04,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205085608] [2021-06-05 20:03:04,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205085608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:04,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:04,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:04,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364872118] [2021-06-05 20:03:04,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:04,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:04,500 INFO L87 Difference]: Start difference. First operand 4564 states and 12145 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:05,490 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:03:05,812 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:05,969 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:03:06,189 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:03:06,397 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:03:06,672 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:03:06,877 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:03:07,063 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:03:07,255 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:03:07,406 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:07,584 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:07,762 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:03:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:07,771 INFO L93 Difference]: Finished difference Result 7289 states and 18432 transitions. [2021-06-05 20:03:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:03:07,771 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:07,777 INFO L225 Difference]: With dead ends: 7289 [2021-06-05 20:03:07,777 INFO L226 Difference]: Without dead ends: 7289 [2021-06-05 20:03:07,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2960.9ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:03:07,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7289 states. [2021-06-05 20:03:07,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7289 to 4568. [2021-06-05 20:03:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.662067455102935) internal successors, (12155), 4567 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:07,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12155 transitions. [2021-06-05 20:03:07,872 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12155 transitions. Word has length 94 [2021-06-05 20:03:07,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:07,872 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12155 transitions. [2021-06-05 20:03:07,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12155 transitions. [2021-06-05 20:03:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:07,890 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:07,890 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:07,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 20:03:07,890 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:07,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:07,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1096103279, now seen corresponding path program 23 times [2021-06-05 20:03:07,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:07,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760277234] [2021-06-05 20:03:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:08,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:08,450 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760277234] [2021-06-05 20:03:08,450 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760277234] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:08,450 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:08,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:08,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547344835] [2021-06-05 20:03:08,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:08,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:08,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:08,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:08,450 INFO L87 Difference]: Start difference. First operand 4568 states and 12155 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:09,439 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:03:09,786 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:09,953 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:10,141 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:03:10,311 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:10,509 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:03:10,807 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:03:10,961 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:03:11,114 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:03:11,277 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:03:11,426 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:11,592 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:11,750 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:03:11,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:11,758 INFO L93 Difference]: Finished difference Result 7159 states and 18131 transitions. [2021-06-05 20:03:11,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:03:11,758 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:11,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:11,764 INFO L225 Difference]: With dead ends: 7159 [2021-06-05 20:03:11,764 INFO L226 Difference]: Without dead ends: 7159 [2021-06-05 20:03:11,764 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3018.3ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:03:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7159 states. [2021-06-05 20:03:11,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7159 to 4568. [2021-06-05 20:03:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.662067455102935) internal successors, (12155), 4567 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12155 transitions. [2021-06-05 20:03:11,830 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12155 transitions. Word has length 94 [2021-06-05 20:03:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:11,830 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12155 transitions. [2021-06-05 20:03:11,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12155 transitions. [2021-06-05 20:03:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:11,834 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:11,834 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:11,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 20:03:11,834 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:11,835 INFO L82 PathProgramCache]: Analyzing trace with hash 547063309, now seen corresponding path program 4 times [2021-06-05 20:03:11,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:11,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106214822] [2021-06-05 20:03:11,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:12,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:12,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106214822] [2021-06-05 20:03:12,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106214822] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:12,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:12,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-06-05 20:03:12,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406439207] [2021-06-05 20:03:12,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 20:03:12,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:12,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 20:03:12,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-06-05 20:03:12,404 INFO L87 Difference]: Start difference. First operand 4568 states and 12155 transitions. Second operand has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:16,247 INFO L93 Difference]: Finished difference Result 6579 states and 17100 transitions. [2021-06-05 20:03:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 20:03:16,248 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:16,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:16,284 INFO L225 Difference]: With dead ends: 6579 [2021-06-05 20:03:16,284 INFO L226 Difference]: Without dead ends: 6525 [2021-06-05 20:03:16,285 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 2341.0ms TimeCoverageRelationStatistics Valid=939, Invalid=3753, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 20:03:16,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2021-06-05 20:03:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 4964. [2021-06-05 20:03:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4964 states, 4962 states have (on average 2.664852881902459) internal successors, (13223), 4963 states have internal predecessors, (13223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 13223 transitions. [2021-06-05 20:03:16,356 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 13223 transitions. Word has length 94 [2021-06-05 20:03:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:16,356 INFO L482 AbstractCegarLoop]: Abstraction has 4964 states and 13223 transitions. [2021-06-05 20:03:16,356 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 13223 transitions. [2021-06-05 20:03:16,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:16,376 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:16,376 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:16,376 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 20:03:16,376 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:16,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1771290287, now seen corresponding path program 24 times [2021-06-05 20:03:16,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:16,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774175484] [2021-06-05 20:03:16,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:17,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:17,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774175484] [2021-06-05 20:03:17,438 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774175484] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:17,438 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:17,438 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:17,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152260440] [2021-06-05 20:03:17,438 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:17,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:17,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:17,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:17,438 INFO L87 Difference]: Start difference. First operand 4964 states and 13223 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:18,451 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:03:18,651 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:03:18,852 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:03:19,088 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:03:19,312 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:03:19,531 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:03:19,951 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:03:20,123 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:20,320 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:03:20,695 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:03:20,888 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:03:21,066 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:03:21,279 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:03:21,466 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:03:21,671 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:03:21,856 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:03:22,054 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:03:22,238 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:22,427 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:03:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:22,437 INFO L93 Difference]: Finished difference Result 10227 states and 25999 transitions. [2021-06-05 20:03:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 20:03:22,437 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:22,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:22,445 INFO L225 Difference]: With dead ends: 10227 [2021-06-05 20:03:22,445 INFO L226 Difference]: Without dead ends: 10227 [2021-06-05 20:03:22,446 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4838.3ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 20:03:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10227 states. [2021-06-05 20:03:22,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10227 to 4592. [2021-06-05 20:03:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4590 states have (on average 2.6638344226579522) internal successors, (12227), 4591 states have internal predecessors, (12227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:22,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 12227 transitions. [2021-06-05 20:03:22,517 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 12227 transitions. Word has length 94 [2021-06-05 20:03:22,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:22,517 INFO L482 AbstractCegarLoop]: Abstraction has 4592 states and 12227 transitions. [2021-06-05 20:03:22,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:22,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 12227 transitions. [2021-06-05 20:03:22,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:22,521 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:22,521 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:22,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 20:03:22,521 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:22,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:22,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1485857111, now seen corresponding path program 25 times [2021-06-05 20:03:22,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:22,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927010928] [2021-06-05 20:03:22,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:23,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:23,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927010928] [2021-06-05 20:03:23,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927010928] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:23,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:23,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:23,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919697039] [2021-06-05 20:03:23,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:23,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:23,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:23,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:23,057 INFO L87 Difference]: Start difference. First operand 4592 states and 12227 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:24,052 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:03:24,229 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:03:24,432 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:03:24,796 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:24,986 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:03:25,163 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:25,368 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:03:25,736 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:03:25,914 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:03:26,113 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:03:26,300 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:26,537 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:03:26,733 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:26,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:26,740 INFO L93 Difference]: Finished difference Result 8626 states and 21949 transitions. [2021-06-05 20:03:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:03:26,741 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:26,748 INFO L225 Difference]: With dead ends: 8626 [2021-06-05 20:03:26,748 INFO L226 Difference]: Without dead ends: 8626 [2021-06-05 20:03:26,749 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3270.6ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:03:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8626 states. [2021-06-05 20:03:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8626 to 4568. [2021-06-05 20:03:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.662067455102935) internal successors, (12155), 4567 states have internal predecessors, (12155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12155 transitions. [2021-06-05 20:03:26,827 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12155 transitions. Word has length 94 [2021-06-05 20:03:26,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:26,828 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12155 transitions. [2021-06-05 20:03:26,828 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12155 transitions. [2021-06-05 20:03:26,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:26,833 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:26,833 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:26,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 20:03:26,833 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:26,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1831152755, now seen corresponding path program 26 times [2021-06-05 20:03:26,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:26,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062020436] [2021-06-05 20:03:26,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:27,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:27,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:27,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062020436] [2021-06-05 20:03:27,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062020436] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:27,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:27,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:27,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094750285] [2021-06-05 20:03:27,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:27,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:27,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:27,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:27,546 INFO L87 Difference]: Start difference. First operand 4568 states and 12155 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:28,467 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:03:28,838 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:03:29,001 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:29,192 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:03:29,444 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:03:29,669 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:03:29,937 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:03:30,088 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:03:30,250 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:03:30,403 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:03:30,528 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:03:30,671 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:03:30,826 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:03:30,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:30,834 INFO L93 Difference]: Finished difference Result 7442 states and 18798 transitions. [2021-06-05 20:03:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:03:30,834 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:30,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:30,842 INFO L225 Difference]: With dead ends: 7442 [2021-06-05 20:03:30,842 INFO L226 Difference]: Without dead ends: 7442 [2021-06-05 20:03:30,843 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3064.6ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:03:30,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7442 states. [2021-06-05 20:03:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7442 to 4580. [2021-06-05 20:03:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.661642638706859) internal successors, (12185), 4579 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12185 transitions. [2021-06-05 20:03:30,918 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12185 transitions. Word has length 94 [2021-06-05 20:03:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:30,926 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12185 transitions. [2021-06-05 20:03:30,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:30,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12185 transitions. [2021-06-05 20:03:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:30,931 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:30,931 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:30,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 20:03:30,931 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:30,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:30,932 INFO L82 PathProgramCache]: Analyzing trace with hash -62617001, now seen corresponding path program 27 times [2021-06-05 20:03:30,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:30,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902256745] [2021-06-05 20:03:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:31,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:31,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:31,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902256745] [2021-06-05 20:03:31,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902256745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:31,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:31,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:31,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283369818] [2021-06-05 20:03:31,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:31,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:31,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:31,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:31,503 INFO L87 Difference]: Start difference. First operand 4580 states and 12185 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:32,351 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:03:32,679 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:03:32,845 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:33,032 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:33,237 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:03:33,419 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:33,635 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:03:33,954 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:03:34,107 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:03:34,251 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:03:34,422 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:03:34,563 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:03:34,707 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:03:34,853 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:03:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:34,860 INFO L93 Difference]: Finished difference Result 7785 states and 19498 transitions. [2021-06-05 20:03:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:03:34,861 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:34,866 INFO L225 Difference]: With dead ends: 7785 [2021-06-05 20:03:34,867 INFO L226 Difference]: Without dead ends: 7785 [2021-06-05 20:03:34,867 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3074.0ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:03:34,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2021-06-05 20:03:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 4576. [2021-06-05 20:03:34,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.661783996501968) internal successors, (12175), 4575 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:34,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12175 transitions. [2021-06-05 20:03:34,927 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12175 transitions. Word has length 94 [2021-06-05 20:03:34,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:34,927 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12175 transitions. [2021-06-05 20:03:34,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:34,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12175 transitions. [2021-06-05 20:03:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:34,931 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:34,931 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:34,931 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 20:03:34,931 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:34,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:34,932 INFO L82 PathProgramCache]: Analyzing trace with hash -597869171, now seen corresponding path program 28 times [2021-06-05 20:03:34,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:34,932 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381922497] [2021-06-05 20:03:34,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:35,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:35,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381922497] [2021-06-05 20:03:35,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381922497] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:35,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:35,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:35,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812807891] [2021-06-05 20:03:35,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:35,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:35,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:35,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:35,412 INFO L87 Difference]: Start difference. First operand 4576 states and 12175 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:36,231 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:03:36,593 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:03:36,752 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:03:36,917 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:37,108 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:37,322 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:03:37,497 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:37,710 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:03:38,019 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:03:38,176 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:03:38,329 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:03:38,488 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:03:38,620 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:03:38,773 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:03:38,926 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:03:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:38,933 INFO L93 Difference]: Finished difference Result 7340 states and 18556 transitions. [2021-06-05 20:03:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:03:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:38,939 INFO L225 Difference]: With dead ends: 7340 [2021-06-05 20:03:38,939 INFO L226 Difference]: Without dead ends: 7340 [2021-06-05 20:03:38,940 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3178.3ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:03:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7340 states. [2021-06-05 20:03:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7340 to 4576. [2021-06-05 20:03:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.661783996501968) internal successors, (12175), 4575 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12175 transitions. [2021-06-05 20:03:39,000 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12175 transitions. Word has length 94 [2021-06-05 20:03:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:39,000 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12175 transitions. [2021-06-05 20:03:39,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12175 transitions. [2021-06-05 20:03:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:39,004 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:39,004 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:39,004 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 20:03:39,004 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:39,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:39,004 INFO L82 PathProgramCache]: Analyzing trace with hash -25428535, now seen corresponding path program 5 times [2021-06-05 20:03:39,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:39,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224746843] [2021-06-05 20:03:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:39,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:39,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224746843] [2021-06-05 20:03:39,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224746843] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:39,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:39,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-06-05 20:03:39,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691012499] [2021-06-05 20:03:39,756 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-05 20:03:39,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:39,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-05 20:03:39,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2021-06-05 20:03:39,757 INFO L87 Difference]: Start difference. First operand 4576 states and 12175 transitions. Second operand has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:42,960 INFO L93 Difference]: Finished difference Result 6716 states and 17584 transitions. [2021-06-05 20:03:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 20:03:42,961 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:42,967 INFO L225 Difference]: With dead ends: 6716 [2021-06-05 20:03:42,968 INFO L226 Difference]: Without dead ends: 6662 [2021-06-05 20:03:42,968 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 2477.2ms TimeCoverageRelationStatistics Valid=879, Invalid=3543, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 20:03:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6662 states. [2021-06-05 20:03:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6662 to 5044. [2021-06-05 20:03:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5044 states, 5042 states have (on average 2.6693772312574375) internal successors, (13459), 5043 states have internal predecessors, (13459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:43,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5044 states to 5044 states and 13459 transitions. [2021-06-05 20:03:43,031 INFO L78 Accepts]: Start accepts. Automaton has 5044 states and 13459 transitions. Word has length 94 [2021-06-05 20:03:43,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:43,031 INFO L482 AbstractCegarLoop]: Abstraction has 5044 states and 13459 transitions. [2021-06-05 20:03:43,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 27 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:43,031 INFO L276 IsEmpty]: Start isEmpty. Operand 5044 states and 13459 transitions. [2021-06-05 20:03:43,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:43,036 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:43,036 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:43,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 20:03:43,036 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:43,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1198798443, now seen corresponding path program 29 times [2021-06-05 20:03:43,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:43,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125115464] [2021-06-05 20:03:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:43,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:43,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125115464] [2021-06-05 20:03:43,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125115464] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:43,554 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:43,554 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:43,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320145952] [2021-06-05 20:03:43,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:43,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:43,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:43,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:43,556 INFO L87 Difference]: Start difference. First operand 5044 states and 13459 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:44,560 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:45,460 WARN L205 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:03:45,652 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:03:45,867 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:03:46,043 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:03:46,275 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:03:46,673 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:46,879 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:03:47,094 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:47,330 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:03:47,740 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:03:47,943 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:03:48,118 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:03:48,329 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:03:48,512 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:03:48,732 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:03:48,917 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:03:49,130 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:03:49,348 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:49,553 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:03:49,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:49,563 INFO L93 Difference]: Finished difference Result 10865 states and 27705 transitions. [2021-06-05 20:03:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:03:49,564 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:49,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:49,572 INFO L225 Difference]: With dead ends: 10865 [2021-06-05 20:03:49,572 INFO L226 Difference]: Without dead ends: 10865 [2021-06-05 20:03:49,573 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 5411.3ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:03:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10865 states. [2021-06-05 20:03:49,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10865 to 4648. [2021-06-05 20:03:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4646 states have (on average 2.667025398191993) internal successors, (12391), 4647 states have internal predecessors, (12391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 12391 transitions. [2021-06-05 20:03:49,653 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 12391 transitions. Word has length 94 [2021-06-05 20:03:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:49,653 INFO L482 AbstractCegarLoop]: Abstraction has 4648 states and 12391 transitions. [2021-06-05 20:03:49,653 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:49,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 12391 transitions. [2021-06-05 20:03:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:49,657 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:49,657 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:49,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 20:03:49,658 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:49,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:49,658 INFO L82 PathProgramCache]: Analyzing trace with hash -2058348955, now seen corresponding path program 30 times [2021-06-05 20:03:49,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:49,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60553062] [2021-06-05 20:03:49,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:50,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:50,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60553062] [2021-06-05 20:03:50,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60553062] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:50,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:50,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:50,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458180226] [2021-06-05 20:03:50,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:50,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:50,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:50,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:50,295 INFO L87 Difference]: Start difference. First operand 4648 states and 12391 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:51,175 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:03:51,351 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:51,548 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:03:51,735 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:03:51,946 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:03:52,346 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:52,519 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:52,728 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:03:52,914 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:53,147 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:03:53,585 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:03:53,771 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:03:53,945 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:03:54,140 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:03:54,323 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:03:54,526 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:03:54,740 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:55,123 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:03:55,335 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:03:55,514 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:55,719 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:55,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:03:55,730 INFO L93 Difference]: Finished difference Result 11152 states and 28199 transitions. [2021-06-05 20:03:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:03:55,731 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:03:55,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:03:55,740 INFO L225 Difference]: With dead ends: 11152 [2021-06-05 20:03:55,740 INFO L226 Difference]: Without dead ends: 11152 [2021-06-05 20:03:55,740 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4900.9ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:03:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11152 states. [2021-06-05 20:03:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11152 to 4624. [2021-06-05 20:03:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 4622 states have (on average 2.665296408481177) internal successors, (12319), 4623 states have internal predecessors, (12319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 12319 transitions. [2021-06-05 20:03:55,826 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 12319 transitions. Word has length 94 [2021-06-05 20:03:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:03:55,826 INFO L482 AbstractCegarLoop]: Abstraction has 4624 states and 12319 transitions. [2021-06-05 20:03:55,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 12319 transitions. [2021-06-05 20:03:55,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:03:55,830 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:03:55,830 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:03:55,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 20:03:55,830 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:03:55,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:03:55,831 INFO L82 PathProgramCache]: Analyzing trace with hash 271589039, now seen corresponding path program 31 times [2021-06-05 20:03:55,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:03:55,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118253418] [2021-06-05 20:03:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:03:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:03:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:03:56,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:03:56,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118253418] [2021-06-05 20:03:56,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118253418] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:03:56,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:03:56,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:03:56,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168122146] [2021-06-05 20:03:56,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:03:56,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:03:56,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:03:56,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:03:56,454 INFO L87 Difference]: Start difference. First operand 4624 states and 12319 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:03:57,314 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:03:57,499 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:03:57,698 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:03:58,098 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:03:58,273 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:03:58,457 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:03:58,679 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:03:58,866 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:03:59,090 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:03:59,441 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:03:59,642 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:03:59,900 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:04:00,063 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:00,235 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:04:00,409 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:00,416 INFO L93 Difference]: Finished difference Result 9107 states and 23220 transitions. [2021-06-05 20:04:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:04:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:00,425 INFO L225 Difference]: With dead ends: 9107 [2021-06-05 20:04:00,425 INFO L226 Difference]: Without dead ends: 9107 [2021-06-05 20:04:00,425 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3621.8ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:04:00,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2021-06-05 20:04:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 4576. [2021-06-05 20:04:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.661783996501968) internal successors, (12175), 4575 states have internal predecessors, (12175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12175 transitions. [2021-06-05 20:04:00,499 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12175 transitions. Word has length 94 [2021-06-05 20:04:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:00,499 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12175 transitions. [2021-06-05 20:04:00,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:00,499 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12175 transitions. [2021-06-05 20:04:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:00,503 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:00,503 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:00,503 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 20:04:00,503 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:00,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1720847629, now seen corresponding path program 32 times [2021-06-05 20:04:00,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:00,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420461312] [2021-06-05 20:04:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:01,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:01,090 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:01,090 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420461312] [2021-06-05 20:04:01,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420461312] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:01,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:01,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:01,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148120226] [2021-06-05 20:04:01,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:01,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:01,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:01,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:01,091 INFO L87 Difference]: Start difference. First operand 4576 states and 12175 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:02,253 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:02,432 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:04:02,613 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:04:02,853 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:04:03,077 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:04:03,484 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:04:03,613 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:04:03,753 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:04:04,001 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:04:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:04,141 INFO L93 Difference]: Finished difference Result 7589 states and 19149 transitions. [2021-06-05 20:04:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:04:04,142 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:04,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:04,148 INFO L225 Difference]: With dead ends: 7589 [2021-06-05 20:04:04,148 INFO L226 Difference]: Without dead ends: 7589 [2021-06-05 20:04:04,148 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2770.5ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:04:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7589 states. [2021-06-05 20:04:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7589 to 4592. [2021-06-05 20:04:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 4590 states have (on average 2.661220043572985) internal successors, (12215), 4591 states have internal predecessors, (12215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 12215 transitions. [2021-06-05 20:04:04,214 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 12215 transitions. Word has length 94 [2021-06-05 20:04:04,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:04,215 INFO L482 AbstractCegarLoop]: Abstraction has 4592 states and 12215 transitions. [2021-06-05 20:04:04,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:04,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 12215 transitions. [2021-06-05 20:04:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:04,219 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:04,219 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:04,219 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 20:04:04,219 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:04,219 INFO L82 PathProgramCache]: Analyzing trace with hash -805583913, now seen corresponding path program 33 times [2021-06-05 20:04:04,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:04,219 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066440353] [2021-06-05 20:04:04,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:04,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:04,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066440353] [2021-06-05 20:04:04,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066440353] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:04,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:04,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:04,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332288444] [2021-06-05 20:04:04,696 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:04,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:04,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:04,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:04,697 INFO L87 Difference]: Start difference. First operand 4592 states and 12215 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:05,695 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:04:05,834 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:06,001 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:04:06,177 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:06,372 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:06,543 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:06,743 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:07,078 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:04:07,248 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:04:07,376 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:04:07,509 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:04:07,754 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:04:07,890 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:04:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:07,898 INFO L93 Difference]: Finished difference Result 7932 states and 19849 transitions. [2021-06-05 20:04:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:04:07,898 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:07,906 INFO L225 Difference]: With dead ends: 7932 [2021-06-05 20:04:07,907 INFO L226 Difference]: Without dead ends: 7932 [2021-06-05 20:04:07,907 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2859.7ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:04:07,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7932 states. [2021-06-05 20:04:07,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7932 to 4588. [2021-06-05 20:04:07,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4588 states, 4586 states have (on average 2.6613606628870476) internal successors, (12205), 4587 states have internal predecessors, (12205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:07,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 12205 transitions. [2021-06-05 20:04:07,977 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 12205 transitions. Word has length 94 [2021-06-05 20:04:07,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:07,977 INFO L482 AbstractCegarLoop]: Abstraction has 4588 states and 12205 transitions. [2021-06-05 20:04:07,977 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 12205 transitions. [2021-06-05 20:04:07,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:07,981 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:07,981 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:07,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 20:04:07,981 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:07,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:07,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1340836083, now seen corresponding path program 34 times [2021-06-05 20:04:07,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:07,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100950879] [2021-06-05 20:04:07,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:08,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:08,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:08,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100950879] [2021-06-05 20:04:08,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100950879] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:08,514 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:08,514 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:08,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825476943] [2021-06-05 20:04:08,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:08,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:08,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:08,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:08,514 INFO L87 Difference]: Start difference. First operand 4588 states and 12205 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:09,595 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:09,756 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:09,927 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:10,100 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:10,301 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:10,473 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:10,687 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:11,239 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:04:11,388 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:04:11,632 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:04:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:11,771 INFO L93 Difference]: Finished difference Result 8019 states and 20050 transitions. [2021-06-05 20:04:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:04:11,772 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:11,778 INFO L225 Difference]: With dead ends: 8019 [2021-06-05 20:04:11,778 INFO L226 Difference]: Without dead ends: 8019 [2021-06-05 20:04:11,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2964.7ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:04:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8019 states. [2021-06-05 20:04:11,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8019 to 4580. [2021-06-05 20:04:11,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.661642638706859) internal successors, (12185), 4579 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12185 transitions. [2021-06-05 20:04:11,846 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12185 transitions. Word has length 94 [2021-06-05 20:04:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:11,847 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12185 transitions. [2021-06-05 20:04:11,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12185 transitions. [2021-06-05 20:04:11,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:11,851 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:11,851 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:11,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 20:04:11,851 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:11,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1764516877, now seen corresponding path program 35 times [2021-06-05 20:04:11,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:11,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675485930] [2021-06-05 20:04:11,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:12,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:12,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675485930] [2021-06-05 20:04:12,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675485930] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:12,351 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:12,351 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:12,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207858590] [2021-06-05 20:04:12,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:12,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:12,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:12,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:12,352 INFO L87 Difference]: Start difference. First operand 4580 states and 12185 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:13,481 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:04:13,633 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:13,776 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:13,962 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:14,149 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:14,357 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:14,530 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:14,744 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:15,279 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:04:15,414 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:04:15,653 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:04:15,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:15,795 INFO L93 Difference]: Finished difference Result 7474 states and 18869 transitions. [2021-06-05 20:04:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:04:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:15,802 INFO L225 Difference]: With dead ends: 7474 [2021-06-05 20:04:15,802 INFO L226 Difference]: Without dead ends: 7474 [2021-06-05 20:04:15,802 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3112.8ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:04:15,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-06-05 20:04:15,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 4580. [2021-06-05 20:04:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.661642638706859) internal successors, (12185), 4579 states have internal predecessors, (12185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:15,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12185 transitions. [2021-06-05 20:04:15,863 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12185 transitions. Word has length 94 [2021-06-05 20:04:15,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:15,863 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12185 transitions. [2021-06-05 20:04:15,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:15,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12185 transitions. [2021-06-05 20:04:15,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:15,867 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:15,867 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:15,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 20:04:15,867 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:15,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:15,867 INFO L82 PathProgramCache]: Analyzing trace with hash 949628105, now seen corresponding path program 6 times [2021-06-05 20:04:15,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:15,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951937116] [2021-06-05 20:04:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:16,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:16,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951937116] [2021-06-05 20:04:16,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951937116] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:16,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:16,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:04:16,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755929305] [2021-06-05 20:04:16,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:04:16,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:16,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:04:16,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:04:16,158 INFO L87 Difference]: Start difference. First operand 4580 states and 12185 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:17,387 INFO L93 Difference]: Finished difference Result 4752 states and 12505 transitions. [2021-06-05 20:04:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 20:04:17,387 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:17,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:17,391 INFO L225 Difference]: With dead ends: 4752 [2021-06-05 20:04:17,392 INFO L226 Difference]: Without dead ends: 4752 [2021-06-05 20:04:17,392 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 969.9ms TimeCoverageRelationStatistics Valid=534, Invalid=1536, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:04:17,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-06-05 20:04:17,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4232. [2021-06-05 20:04:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4230 states have (on average 2.661465721040189) internal successors, (11258), 4231 states have internal predecessors, (11258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 11258 transitions. [2021-06-05 20:04:17,433 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 11258 transitions. Word has length 94 [2021-06-05 20:04:17,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:17,434 INFO L482 AbstractCegarLoop]: Abstraction has 4232 states and 11258 transitions. [2021-06-05 20:04:17,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 11258 transitions. [2021-06-05 20:04:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:17,437 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:17,437 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:17,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 20:04:17,437 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:17,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2121112213, now seen corresponding path program 36 times [2021-06-05 20:04:17,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:17,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645269208] [2021-06-05 20:04:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:17,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:17,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645269208] [2021-06-05 20:04:17,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645269208] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:17,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:17,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:17,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623826574] [2021-06-05 20:04:17,961 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:17,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:17,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:17,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:17,962 INFO L87 Difference]: Start difference. First operand 4232 states and 11258 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:18,800 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:18,962 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:04:19,101 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:04:19,274 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:04:19,480 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:04:19,685 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:04:19,854 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:04:20,076 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:04:20,412 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:20,585 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:20,831 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:04:21,001 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:21,214 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:04:21,562 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:04:21,760 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:04:21,915 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:04:22,134 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:04:22,287 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:04:22,503 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:04:22,650 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:04:22,845 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:04:22,995 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:23,184 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:04:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:23,193 INFO L93 Difference]: Finished difference Result 10053 states and 25578 transitions. [2021-06-05 20:04:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:04:23,194 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:23,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:23,200 INFO L225 Difference]: With dead ends: 10053 [2021-06-05 20:04:23,200 INFO L226 Difference]: Without dead ends: 10053 [2021-06-05 20:04:23,201 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4669.8ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:04:23,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10053 states. [2021-06-05 20:04:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10053 to 4280. [2021-06-05 20:04:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4280 states, 4278 states have (on average 2.665264142122487) internal successors, (11402), 4279 states have internal predecessors, (11402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4280 states to 4280 states and 11402 transitions. [2021-06-05 20:04:23,263 INFO L78 Accepts]: Start accepts. Automaton has 4280 states and 11402 transitions. Word has length 94 [2021-06-05 20:04:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:23,263 INFO L482 AbstractCegarLoop]: Abstraction has 4280 states and 11402 transitions. [2021-06-05 20:04:23,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:23,263 INFO L276 IsEmpty]: Start isEmpty. Operand 4280 states and 11402 transitions. [2021-06-05 20:04:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:23,266 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:23,267 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:23,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 20:04:23,267 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1083292315, now seen corresponding path program 37 times [2021-06-05 20:04:23,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:23,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954479747] [2021-06-05 20:04:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:23,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:23,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954479747] [2021-06-05 20:04:23,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954479747] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:23,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:23,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:23,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238444668] [2021-06-05 20:04:23,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:23,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:23,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:23,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:23,790 INFO L87 Difference]: Start difference. First operand 4280 states and 11402 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:24,663 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:24,832 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:04:24,967 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:04:25,151 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:04:25,333 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:04:25,535 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:04:25,899 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:26,068 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:26,253 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:26,469 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:26,671 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:26,905 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:27,310 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:04:27,497 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:04:27,649 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:04:27,857 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:04:28,132 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:04:28,332 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:04:28,509 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:28,660 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:04:28,852 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:04:29,017 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:29,206 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:29,216 INFO L93 Difference]: Finished difference Result 10337 states and 26075 transitions. [2021-06-05 20:04:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:04:29,217 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:29,225 INFO L225 Difference]: With dead ends: 10337 [2021-06-05 20:04:29,226 INFO L226 Difference]: Without dead ends: 10337 [2021-06-05 20:04:29,226 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4775.5ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:04:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10337 states. [2021-06-05 20:04:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10337 to 4268. [2021-06-05 20:04:29,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 4266 states have (on average 2.6643225503985) internal successors, (11366), 4267 states have internal predecessors, (11366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 11366 transitions. [2021-06-05 20:04:29,304 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 11366 transitions. Word has length 94 [2021-06-05 20:04:29,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:29,305 INFO L482 AbstractCegarLoop]: Abstraction has 4268 states and 11366 transitions. [2021-06-05 20:04:29,305 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 11366 transitions. [2021-06-05 20:04:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:29,309 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:29,309 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:29,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 20:04:29,309 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:29,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1246645679, now seen corresponding path program 38 times [2021-06-05 20:04:29,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:29,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776852632] [2021-06-05 20:04:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:30,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:30,138 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776852632] [2021-06-05 20:04:30,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776852632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:30,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:30,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:30,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697543822] [2021-06-05 20:04:30,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:30,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:30,139 INFO L87 Difference]: Start difference. First operand 4268 states and 11366 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:30,991 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:31,192 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:04:31,336 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:04:31,519 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:04:31,948 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:32,098 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:32,278 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:32,472 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:32,672 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:32,991 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:33,204 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:33,575 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:04:33,733 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:04:33,923 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:04:34,103 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:04:34,267 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:04:34,462 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:04:34,672 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:34,827 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:04:34,999 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:04:35,162 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:35,329 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:35,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:35,339 INFO L93 Difference]: Finished difference Result 10381 states and 26173 transitions. [2021-06-05 20:04:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 20:04:35,339 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:35,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:35,349 INFO L225 Difference]: With dead ends: 10381 [2021-06-05 20:04:35,349 INFO L226 Difference]: Without dead ends: 10381 [2021-06-05 20:04:35,350 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4894.2ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 20:04:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10381 states. [2021-06-05 20:04:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10381 to 4244. [2021-06-05 20:04:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 4242 states have (on average 2.6624233851956625) internal successors, (11294), 4243 states have internal predecessors, (11294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 11294 transitions. [2021-06-05 20:04:35,428 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 11294 transitions. Word has length 94 [2021-06-05 20:04:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:35,428 INFO L482 AbstractCegarLoop]: Abstraction has 4244 states and 11294 transitions. [2021-06-05 20:04:35,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 11294 transitions. [2021-06-05 20:04:35,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:35,432 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:35,432 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:35,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 20:04:35,432 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:35,432 INFO L82 PathProgramCache]: Analyzing trace with hash -855319471, now seen corresponding path program 39 times [2021-06-05 20:04:35,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:35,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2531205] [2021-06-05 20:04:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:36,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:36,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:36,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2531205] [2021-06-05 20:04:36,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2531205] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:36,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:36,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:36,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961961453] [2021-06-05 20:04:36,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:36,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:36,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:36,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:36,004 INFO L87 Difference]: Start difference. First operand 4244 states and 11294 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:36,891 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:37,089 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:04:37,472 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:04:37,659 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:37,814 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:37,995 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:38,182 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:38,395 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:38,580 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:38,817 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:39,162 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:04:39,322 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:04:39,491 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:04:39,639 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:04:39,797 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:04:39,963 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:39,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:39,970 INFO L93 Difference]: Finished difference Result 8856 states and 22528 transitions. [2021-06-05 20:04:39,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:04:39,971 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:39,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:39,980 INFO L225 Difference]: With dead ends: 8856 [2021-06-05 20:04:39,980 INFO L226 Difference]: Without dead ends: 8856 [2021-06-05 20:04:39,980 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3550.6ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:04:39,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8856 states. [2021-06-05 20:04:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8856 to 4232. [2021-06-05 20:04:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4232 states, 4230 states have (on average 2.661465721040189) internal successors, (11258), 4231 states have internal predecessors, (11258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4232 states to 4232 states and 11258 transitions. [2021-06-05 20:04:40,057 INFO L78 Accepts]: Start accepts. Automaton has 4232 states and 11258 transitions. Word has length 94 [2021-06-05 20:04:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:40,057 INFO L482 AbstractCegarLoop]: Abstraction has 4232 states and 11258 transitions. [2021-06-05 20:04:40,058 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:40,058 INFO L276 IsEmpty]: Start isEmpty. Operand 4232 states and 11258 transitions. [2021-06-05 20:04:40,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:40,061 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:40,062 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:40,062 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 20:04:40,062 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:40,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1394406491, now seen corresponding path program 40 times [2021-06-05 20:04:40,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:40,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207844043] [2021-06-05 20:04:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:40,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:40,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207844043] [2021-06-05 20:04:40,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207844043] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:40,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:40,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:40,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420115035] [2021-06-05 20:04:40,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:40,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:40,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:40,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:40,673 INFO L87 Difference]: Start difference. First operand 4232 states and 11258 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:41,935 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:42,114 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:04:42,282 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:04:42,496 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:04:42,709 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:04:43,426 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-06-05 20:04:43,562 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-06-05 20:04:43,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:43,698 INFO L93 Difference]: Finished difference Result 6640 states and 16873 transitions. [2021-06-05 20:04:43,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:04:43,698 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:43,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:43,703 INFO L225 Difference]: With dead ends: 6640 [2021-06-05 20:04:43,703 INFO L226 Difference]: Without dead ends: 6640 [2021-06-05 20:04:43,704 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2755.6ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:04:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2021-06-05 20:04:43,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 4239. [2021-06-05 20:04:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4239 states, 4237 states have (on average 2.660844937455747) internal successors, (11274), 4238 states have internal predecessors, (11274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:43,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4239 states to 4239 states and 11274 transitions. [2021-06-05 20:04:43,766 INFO L78 Accepts]: Start accepts. Automaton has 4239 states and 11274 transitions. Word has length 94 [2021-06-05 20:04:43,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:43,766 INFO L482 AbstractCegarLoop]: Abstraction has 4239 states and 11274 transitions. [2021-06-05 20:04:43,766 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:43,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4239 states and 11274 transitions. [2021-06-05 20:04:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:43,770 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:43,771 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:43,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 20:04:43,771 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:43,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:43,774 INFO L82 PathProgramCache]: Analyzing trace with hash 374129263, now seen corresponding path program 41 times [2021-06-05 20:04:43,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:43,774 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247549903] [2021-06-05 20:04:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:44,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:44,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247549903] [2021-06-05 20:04:44,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247549903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:44,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:44,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:44,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899291308] [2021-06-05 20:04:44,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:44,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:44,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:44,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:44,294 INFO L87 Difference]: Start difference. First operand 4239 states and 11274 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:45,355 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:45,528 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:04:45,708 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:45,907 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:46,089 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:46,312 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:47,279 INFO L93 Difference]: Finished difference Result 6971 states and 17550 transitions. [2021-06-05 20:04:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:04:47,279 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:47,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:47,285 INFO L225 Difference]: With dead ends: 6971 [2021-06-05 20:04:47,286 INFO L226 Difference]: Without dead ends: 6971 [2021-06-05 20:04:47,286 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2720.1ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:04:47,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6971 states. [2021-06-05 20:04:47,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6971 to 4236. [2021-06-05 20:04:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4236 states, 4234 states have (on average 2.660840812470477) internal successors, (11266), 4235 states have internal predecessors, (11266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 11266 transitions. [2021-06-05 20:04:47,345 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 11266 transitions. Word has length 94 [2021-06-05 20:04:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:47,345 INFO L482 AbstractCegarLoop]: Abstraction has 4236 states and 11266 transitions. [2021-06-05 20:04:47,345 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 11266 transitions. [2021-06-05 20:04:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:47,348 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:47,348 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:47,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 20:04:47,349 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:47,349 INFO L82 PathProgramCache]: Analyzing trace with hash -161122907, now seen corresponding path program 42 times [2021-06-05 20:04:47,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:47,349 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590787658] [2021-06-05 20:04:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:47,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:47,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590787658] [2021-06-05 20:04:47,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590787658] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:47,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:47,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:47,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373800209] [2021-06-05 20:04:47,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:47,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:47,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:47,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:47,844 INFO L87 Difference]: Start difference. First operand 4236 states and 11266 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:48,934 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:04:49,097 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:49,269 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:49,440 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:49,641 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:49,814 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:50,026 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:50,543 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 20:04:51,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:51,021 INFO L93 Difference]: Finished difference Result 7055 states and 17745 transitions. [2021-06-05 20:04:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:04:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:51,027 INFO L225 Difference]: With dead ends: 7055 [2021-06-05 20:04:51,027 INFO L226 Difference]: Without dead ends: 7055 [2021-06-05 20:04:51,028 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2862.2ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:04:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2021-06-05 20:04:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 4230. [2021-06-05 20:04:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4228 states have (on average 2.660832544938505) internal successors, (11250), 4229 states have internal predecessors, (11250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 11250 transitions. [2021-06-05 20:04:51,092 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 11250 transitions. Word has length 94 [2021-06-05 20:04:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:51,093 INFO L482 AbstractCegarLoop]: Abstraction has 4230 states and 11250 transitions. [2021-06-05 20:04:51,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 11250 transitions. [2021-06-05 20:04:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:51,096 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:51,097 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:51,097 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 20:04:51,097 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:51,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:51,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1350737243, now seen corresponding path program 43 times [2021-06-05 20:04:51,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:51,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951548089] [2021-06-05 20:04:51,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:51,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:51,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951548089] [2021-06-05 20:04:51,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951548089] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:51,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:51,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:51,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019968272] [2021-06-05 20:04:51,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:51,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:51,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:51,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:51,620 INFO L87 Difference]: Start difference. First operand 4230 states and 11250 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:52,740 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:04:52,898 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:53,038 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:53,221 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:53,403 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:53,608 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:53,780 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:53,998 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:54,534 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 20:04:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:55,009 INFO L93 Difference]: Finished difference Result 7139 states and 17940 transitions. [2021-06-05 20:04:55,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:04:55,009 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:55,015 INFO L225 Difference]: With dead ends: 7139 [2021-06-05 20:04:55,015 INFO L226 Difference]: Without dead ends: 7139 [2021-06-05 20:04:55,015 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3015.4ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:04:55,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7139 states. [2021-06-05 20:04:55,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7139 to 4227. [2021-06-05 20:04:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4227 states, 4225 states have (on average 2.660828402366864) internal successors, (11242), 4226 states have internal predecessors, (11242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4227 states to 4227 states and 11242 transitions. [2021-06-05 20:04:55,075 INFO L78 Accepts]: Start accepts. Automaton has 4227 states and 11242 transitions. Word has length 94 [2021-06-05 20:04:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:55,075 INFO L482 AbstractCegarLoop]: Abstraction has 4227 states and 11242 transitions. [2021-06-05 20:04:55,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:55,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4227 states and 11242 transitions. [2021-06-05 20:04:55,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:55,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:55,079 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:55,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 20:04:55,079 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:55,079 INFO L82 PathProgramCache]: Analyzing trace with hash 682289263, now seen corresponding path program 44 times [2021-06-05 20:04:55,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:55,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830169632] [2021-06-05 20:04:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:55,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:55,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830169632] [2021-06-05 20:04:55,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830169632] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:55,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:55,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:55,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468588185] [2021-06-05 20:04:55,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:55,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:55,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:55,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:55,592 INFO L87 Difference]: Start difference. First operand 4227 states and 11242 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:56,653 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:04:56,781 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:04:56,941 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:04:57,096 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:04:57,308 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:04:57,492 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:04:57,690 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:04:57,862 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:04:58,081 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:04:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:04:59,070 INFO L93 Difference]: Finished difference Result 6588 states and 16730 transitions. [2021-06-05 20:04:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 20:04:59,070 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:04:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:04:59,076 INFO L225 Difference]: With dead ends: 6588 [2021-06-05 20:04:59,076 INFO L226 Difference]: Without dead ends: 6588 [2021-06-05 20:04:59,076 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3172.1ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 20:04:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6588 states. [2021-06-05 20:04:59,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6588 to 4182. [2021-06-05 20:04:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4180 states have (on average 2.659569377990431) internal successors, (11117), 4181 states have internal predecessors, (11117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 11117 transitions. [2021-06-05 20:04:59,139 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 11117 transitions. Word has length 94 [2021-06-05 20:04:59,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:04:59,139 INFO L482 AbstractCegarLoop]: Abstraction has 4182 states and 11117 transitions. [2021-06-05 20:04:59,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:04:59,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 11117 transitions. [2021-06-05 20:04:59,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:04:59,143 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:04:59,143 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:04:59,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 20:04:59,143 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:04:59,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:04:59,144 INFO L82 PathProgramCache]: Analyzing trace with hash 52912303, now seen corresponding path program 45 times [2021-06-05 20:04:59,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:04:59,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068930529] [2021-06-05 20:04:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:04:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:04:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:04:59,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:04:59,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068930529] [2021-06-05 20:04:59,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068930529] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:04:59,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:04:59,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:04:59,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827749968] [2021-06-05 20:04:59,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:04:59,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:04:59,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:04:59,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:04:59,678 INFO L87 Difference]: Start difference. First operand 4182 states and 11117 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:00,522 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:05:00,798 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:05:00,932 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:05:01,110 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:05:01,292 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:05:01,498 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:05:01,666 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:05:01,925 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:05:02,255 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:02,425 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:05:02,627 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:05:02,878 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:05:03,097 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:03,327 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:05:03,681 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:05:03,904 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:05:04,050 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:05:04,262 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:05:04,416 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:05:04,647 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:05:04,787 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:05:04,992 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:05:05,204 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:05,412 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:05:05,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:05,422 INFO L93 Difference]: Finished difference Result 9258 states and 23595 transitions. [2021-06-05 20:05:05,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 20:05:05,423 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:05,431 INFO L225 Difference]: With dead ends: 9258 [2021-06-05 20:05:05,432 INFO L226 Difference]: Without dead ends: 9258 [2021-06-05 20:05:05,432 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 5093.5ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 20:05:05,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9258 states. [2021-06-05 20:05:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9258 to 4242. [2021-06-05 20:05:05,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4242 states, 4240 states have (on average 2.6643867924528304) internal successors, (11297), 4241 states have internal predecessors, (11297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:05,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 11297 transitions. [2021-06-05 20:05:05,534 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 11297 transitions. Word has length 94 [2021-06-05 20:05:05,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:05,534 INFO L482 AbstractCegarLoop]: Abstraction has 4242 states and 11297 transitions. [2021-06-05 20:05:05,534 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:05,535 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 11297 transitions. [2021-06-05 20:05:05,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:05,538 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:05,538 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:05,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 20:05:05,538 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:05,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:05,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1090732201, now seen corresponding path program 46 times [2021-06-05 20:05:05,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:05,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886743296] [2021-06-05 20:05:05,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:06,072 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-06-05 20:05:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:06,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:06,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886743296] [2021-06-05 20:05:06,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886743296] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:06,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:06,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:06,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514900429] [2021-06-05 20:05:06,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:06,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:06,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:06,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:06,365 INFO L87 Difference]: Start difference. First operand 4242 states and 11297 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:07,201 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:05:07,333 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:05:07,490 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:05:07,638 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:05:07,847 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:05:08,057 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:05:08,277 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:05:08,626 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:08,812 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:05:09,002 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:05:09,218 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:05:09,439 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:05:09,647 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:09,930 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:05:10,344 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:05:10,530 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:05:10,668 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:05:10,855 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:05:11,001 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:05:11,203 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:05:11,407 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:05:11,547 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:05:11,801 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:05:12,041 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:12,247 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:12,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:12,257 INFO L93 Difference]: Finished difference Result 9542 states and 24092 transitions. [2021-06-05 20:05:12,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 20:05:12,257 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:12,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:12,265 INFO L225 Difference]: With dead ends: 9542 [2021-06-05 20:05:12,265 INFO L226 Difference]: Without dead ends: 9542 [2021-06-05 20:05:12,265 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5404.3ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 20:05:12,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9542 states. [2021-06-05 20:05:12,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9542 to 4230. [2021-06-05 20:05:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4228 states have (on average 2.6634342478713338) internal successors, (11261), 4229 states have internal predecessors, (11261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 11261 transitions. [2021-06-05 20:05:12,350 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 11261 transitions. Word has length 94 [2021-06-05 20:05:12,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:12,351 INFO L482 AbstractCegarLoop]: Abstraction has 4230 states and 11261 transitions. [2021-06-05 20:05:12,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 11261 transitions. [2021-06-05 20:05:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:12,354 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:12,355 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:12,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 20:05:12,355 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:12,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:12,355 INFO L82 PathProgramCache]: Analyzing trace with hash -874297101, now seen corresponding path program 47 times [2021-06-05 20:05:12,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:12,355 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114052201] [2021-06-05 20:05:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:12,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:12,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114052201] [2021-06-05 20:05:12,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114052201] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:12,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:12,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:12,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218895525] [2021-06-05 20:05:12,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:12,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:12,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:12,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:12,899 INFO L87 Difference]: Start difference. First operand 4230 states and 11261 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:13,652 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:05:13,859 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:05:14,003 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:05:14,163 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:05:14,301 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:05:14,482 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:05:14,950 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:15,114 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:05:15,270 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:05:15,493 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:05:15,699 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:05:15,900 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:05:16,077 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:16,292 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:05:16,669 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:05:16,842 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:05:16,978 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:05:17,143 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:05:17,285 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:05:17,468 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:05:17,624 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:05:17,762 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:05:17,937 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:05:18,073 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:18,246 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:05:18,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:18,256 INFO L93 Difference]: Finished difference Result 9586 states and 24190 transitions. [2021-06-05 20:05:18,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 20:05:18,256 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:18,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:18,263 INFO L225 Difference]: With dead ends: 9586 [2021-06-05 20:05:18,264 INFO L226 Difference]: Without dead ends: 9586 [2021-06-05 20:05:18,264 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4701.6ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 20:05:18,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9586 states. [2021-06-05 20:05:18,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9586 to 4206. [2021-06-05 20:05:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4206 states, 4204 states have (on average 2.66151284490961) internal successors, (11189), 4205 states have internal predecessors, (11189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4206 states to 4206 states and 11189 transitions. [2021-06-05 20:05:18,339 INFO L78 Accepts]: Start accepts. Automaton has 4206 states and 11189 transitions. Word has length 94 [2021-06-05 20:05:18,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:18,339 INFO L482 AbstractCegarLoop]: Abstraction has 4206 states and 11189 transitions. [2021-06-05 20:05:18,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4206 states and 11189 transitions. [2021-06-05 20:05:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:18,343 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:18,343 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:18,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 20:05:18,343 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:18,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:18,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1318705045, now seen corresponding path program 48 times [2021-06-05 20:05:18,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:18,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220311708] [2021-06-05 20:05:18,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:18,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:18,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220311708] [2021-06-05 20:05:18,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220311708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:18,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:18,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:18,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393644207] [2021-06-05 20:05:18,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:18,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:18,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:18,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:18,896 INFO L87 Difference]: Start difference. First operand 4206 states and 11189 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:19,704 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:05:19,852 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:05:20,142 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:05:20,575 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:05:20,813 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:20,984 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:05:21,136 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:05:21,346 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:05:21,540 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:05:21,744 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:05:21,934 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:22,187 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:05:22,564 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:05:22,713 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:05:22,859 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:05:23,011 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:05:23,162 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:05:23,319 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:05:23,458 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:05:23,588 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:05:23,741 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:05:23,883 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:24,027 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:05:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:24,042 INFO L93 Difference]: Finished difference Result 9641 states and 24311 transitions. [2021-06-05 20:05:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:05:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:24,050 INFO L225 Difference]: With dead ends: 9641 [2021-06-05 20:05:24,050 INFO L226 Difference]: Without dead ends: 9641 [2021-06-05 20:05:24,050 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4508.9ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:05:24,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9641 states. [2021-06-05 20:05:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9641 to 4194. [2021-06-05 20:05:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4194 states, 4192 states have (on average 2.660543893129771) internal successors, (11153), 4193 states have internal predecessors, (11153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4194 states to 4194 states and 11153 transitions. [2021-06-05 20:05:24,132 INFO L78 Accepts]: Start accepts. Automaton has 4194 states and 11153 transitions. Word has length 94 [2021-06-05 20:05:24,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:24,133 INFO L482 AbstractCegarLoop]: Abstraction has 4194 states and 11153 transitions. [2021-06-05 20:05:24,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:24,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4194 states and 11153 transitions. [2021-06-05 20:05:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:24,136 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:24,136 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:24,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 20:05:24,136 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:24,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1722381467, now seen corresponding path program 49 times [2021-06-05 20:05:24,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:24,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640439478] [2021-06-05 20:05:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:24,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:24,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640439478] [2021-06-05 20:05:24,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640439478] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:24,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:24,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:24,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930320668] [2021-06-05 20:05:24,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:24,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:24,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:24,668 INFO L87 Difference]: Start difference. First operand 4194 states and 11153 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:25,513 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:05:25,993 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:05:26,141 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:26,300 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:05:26,454 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:05:26,635 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:05:26,819 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:05:27,036 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:05:27,214 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:27,441 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:05:27,780 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:05:27,920 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:05:28,064 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:05:28,193 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:05:28,328 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:05:28,490 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:05:28,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:28,497 INFO L93 Difference]: Finished difference Result 8002 states and 20385 transitions. [2021-06-05 20:05:28,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 20:05:28,497 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:28,503 INFO L225 Difference]: With dead ends: 8002 [2021-06-05 20:05:28,503 INFO L226 Difference]: Without dead ends: 8002 [2021-06-05 20:05:28,504 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3420.3ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 20:05:28,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8002 states. [2021-06-05 20:05:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8002 to 4182. [2021-06-05 20:05:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 4180 states have (on average 2.659569377990431) internal successors, (11117), 4181 states have internal predecessors, (11117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 11117 transitions. [2021-06-05 20:05:28,566 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 11117 transitions. Word has length 94 [2021-06-05 20:05:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:28,566 INFO L482 AbstractCegarLoop]: Abstraction has 4182 states and 11117 transitions. [2021-06-05 20:05:28,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 11117 transitions. [2021-06-05 20:05:28,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:28,569 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:28,569 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:28,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 20:05:28,569 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:28,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:28,570 INFO L82 PathProgramCache]: Analyzing trace with hash 780592243, now seen corresponding path program 50 times [2021-06-05 20:05:28,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:28,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702553241] [2021-06-05 20:05:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:28,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:28,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702553241] [2021-06-05 20:05:28,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702553241] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:28,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:28,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:05:28,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564473876] [2021-06-05 20:05:28,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:05:28,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:28,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:05:28,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:05:28,843 INFO L87 Difference]: Start difference. First operand 4182 states and 11117 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:29,361 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-06-05 20:05:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:29,925 INFO L93 Difference]: Finished difference Result 5073 states and 12857 transitions. [2021-06-05 20:05:29,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:05:29,925 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:29,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:29,929 INFO L225 Difference]: With dead ends: 5073 [2021-06-05 20:05:29,929 INFO L226 Difference]: Without dead ends: 5073 [2021-06-05 20:05:29,929 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 958.4ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:05:29,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5073 states. [2021-06-05 20:05:29,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5073 to 4226. [2021-06-05 20:05:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4226 states, 4224 states have (on average 2.656960227272727) internal successors, (11223), 4225 states have internal predecessors, (11223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:29,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4226 states to 4226 states and 11223 transitions. [2021-06-05 20:05:29,980 INFO L78 Accepts]: Start accepts. Automaton has 4226 states and 11223 transitions. Word has length 94 [2021-06-05 20:05:29,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:29,980 INFO L482 AbstractCegarLoop]: Abstraction has 4226 states and 11223 transitions. [2021-06-05 20:05:29,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:29,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4226 states and 11223 transitions. [2021-06-05 20:05:29,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:29,984 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:29,984 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:29,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 20:05:29,984 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:29,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1117322871, now seen corresponding path program 51 times [2021-06-05 20:05:29,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:29,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628018699] [2021-06-05 20:05:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:30,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:30,454 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628018699] [2021-06-05 20:05:30,454 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628018699] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:30,454 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:30,454 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:30,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748110720] [2021-06-05 20:05:30,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:30,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:30,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:30,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:30,455 INFO L87 Difference]: Start difference. First operand 4226 states and 11223 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:31,323 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:31,473 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:05:31,860 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:05:32,043 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:05:32,250 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:05:32,468 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:05:32,800 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:05:32,973 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:05:33,130 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:05:33,295 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:05:33,435 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:05:33,596 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:05:33,764 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:05:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:33,772 INFO L93 Difference]: Finished difference Result 6870 states and 17596 transitions. [2021-06-05 20:05:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:05:33,772 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:33,778 INFO L225 Difference]: With dead ends: 6870 [2021-06-05 20:05:33,778 INFO L226 Difference]: Without dead ends: 6870 [2021-06-05 20:05:33,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2902.4ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:05:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2021-06-05 20:05:33,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 4430. [2021-06-05 20:05:33,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4428 states have (on average 2.671409214092141) internal successors, (11829), 4429 states have internal predecessors, (11829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 11829 transitions. [2021-06-05 20:05:33,843 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 11829 transitions. Word has length 94 [2021-06-05 20:05:33,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:33,844 INFO L482 AbstractCegarLoop]: Abstraction has 4430 states and 11829 transitions. [2021-06-05 20:05:33,844 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:33,844 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 11829 transitions. [2021-06-05 20:05:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:33,848 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:33,848 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:33,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 20:05:33,848 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:33,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:33,849 INFO L82 PathProgramCache]: Analyzing trace with hash 982503065, now seen corresponding path program 52 times [2021-06-05 20:05:33,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:33,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993879266] [2021-06-05 20:05:33,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:34,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:34,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993879266] [2021-06-05 20:05:34,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993879266] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:34,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:34,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:34,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447089975] [2021-06-05 20:05:34,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:34,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:34,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:34,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:34,366 INFO L87 Difference]: Start difference. First operand 4430 states and 11829 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:35,203 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:35,360 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:05:35,598 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:05:35,976 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:05:36,192 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:05:36,409 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:05:36,703 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:05:36,880 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:05:37,078 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:37,284 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:05:37,468 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:05:37,668 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:05:37,867 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:05:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:37,875 INFO L93 Difference]: Finished difference Result 7818 states and 19912 transitions. [2021-06-05 20:05:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:05:37,875 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:37,909 INFO L225 Difference]: With dead ends: 7818 [2021-06-05 20:05:37,909 INFO L226 Difference]: Without dead ends: 7818 [2021-06-05 20:05:37,910 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3209.7ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:05:37,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2021-06-05 20:05:37,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 4466. [2021-06-05 20:05:37,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.674059139784946) internal successors, (11937), 4465 states have internal predecessors, (11937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11937 transitions. [2021-06-05 20:05:37,989 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11937 transitions. Word has length 94 [2021-06-05 20:05:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:37,990 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11937 transitions. [2021-06-05 20:05:37,990 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:37,990 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11937 transitions. [2021-06-05 20:05:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:37,993 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:37,994 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:37,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 20:05:37,994 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash 692397687, now seen corresponding path program 53 times [2021-06-05 20:05:37,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:37,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125036873] [2021-06-05 20:05:37,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:38,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:38,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125036873] [2021-06-05 20:05:38,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125036873] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:38,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:38,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:38,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043253952] [2021-06-05 20:05:38,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:38,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:38,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:38,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:38,663 INFO L87 Difference]: Start difference. First operand 4466 states and 11937 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:39,537 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:39,693 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:05:39,916 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:05:40,135 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:05:40,371 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:05:40,763 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:05:40,999 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:05:41,348 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:05:41,553 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:05:41,766 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:05:41,999 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:05:42,221 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:05:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:42,228 INFO L93 Difference]: Finished difference Result 7506 states and 19328 transitions. [2021-06-05 20:05:42,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:05:42,229 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:42,233 INFO L225 Difference]: With dead ends: 7506 [2021-06-05 20:05:42,233 INFO L226 Difference]: Without dead ends: 7506 [2021-06-05 20:05:42,234 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3236.3ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:05:42,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7506 states. [2021-06-05 20:05:42,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7506 to 4430. [2021-06-05 20:05:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4430 states, 4428 states have (on average 2.671409214092141) internal successors, (11829), 4429 states have internal predecessors, (11829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:42,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4430 states to 4430 states and 11829 transitions. [2021-06-05 20:05:42,295 INFO L78 Accepts]: Start accepts. Automaton has 4430 states and 11829 transitions. Word has length 94 [2021-06-05 20:05:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:42,295 INFO L482 AbstractCegarLoop]: Abstraction has 4430 states and 11829 transitions. [2021-06-05 20:05:42,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 4430 states and 11829 transitions. [2021-06-05 20:05:42,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:42,299 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:42,299 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:42,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 20:05:42,300 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:42,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:42,300 INFO L82 PathProgramCache]: Analyzing trace with hash 398173023, now seen corresponding path program 54 times [2021-06-05 20:05:42,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:42,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012223797] [2021-06-05 20:05:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:42,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:42,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012223797] [2021-06-05 20:05:42,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012223797] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:42,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:42,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:42,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662572264] [2021-06-05 20:05:42,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:42,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:42,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:42,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:42,790 INFO L87 Difference]: Start difference. First operand 4430 states and 11829 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:43,674 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:44,020 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:05:44,272 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:05:44,466 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:05:44,672 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:05:44,928 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:05:45,180 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:05:45,321 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:05:45,463 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:05:45,613 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:05:45,740 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:05:45,888 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:05:46,034 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:05:46,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:46,042 INFO L93 Difference]: Finished difference Result 7339 states and 18591 transitions. [2021-06-05 20:05:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:05:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:46,048 INFO L225 Difference]: With dead ends: 7339 [2021-06-05 20:05:46,048 INFO L226 Difference]: Without dead ends: 7339 [2021-06-05 20:05:46,050 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2948.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:05:46,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7339 states. [2021-06-05 20:05:46,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7339 to 4434. [2021-06-05 20:05:46,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4432 states have (on average 2.6712545126353793) internal successors, (11839), 4433 states have internal predecessors, (11839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 11839 transitions. [2021-06-05 20:05:46,117 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 11839 transitions. Word has length 94 [2021-06-05 20:05:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:46,117 INFO L482 AbstractCegarLoop]: Abstraction has 4434 states and 11839 transitions. [2021-06-05 20:05:46,117 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 11839 transitions. [2021-06-05 20:05:46,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:46,121 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:46,122 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:46,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 20:05:46,123 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:46,123 INFO L82 PathProgramCache]: Analyzing trace with hash 338504439, now seen corresponding path program 55 times [2021-06-05 20:05:46,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:46,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249160492] [2021-06-05 20:05:46,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:46,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:46,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249160492] [2021-06-05 20:05:46,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249160492] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:46,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:46,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:46,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859372881] [2021-06-05 20:05:46,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:46,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:46,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:46,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:46,735 INFO L87 Difference]: Start difference. First operand 4434 states and 11839 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:47,697 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:48,042 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:05:48,199 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:05:48,372 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:05:48,583 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:05:48,800 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:05:49,075 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:05:49,215 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:05:49,428 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:05:49,579 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:05:49,705 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:05:49,850 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:05:50,000 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:05:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:50,008 INFO L93 Difference]: Finished difference Result 7397 states and 18649 transitions. [2021-06-05 20:05:50,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:05:50,008 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:50,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:50,015 INFO L225 Difference]: With dead ends: 7397 [2021-06-05 20:05:50,015 INFO L226 Difference]: Without dead ends: 7397 [2021-06-05 20:05:50,016 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2925.8ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:05:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7397 states. [2021-06-05 20:05:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7397 to 4436. [2021-06-05 20:05:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4436 states, 4434 states have (on average 2.671177266576455) internal successors, (11844), 4435 states have internal predecessors, (11844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4436 states to 4436 states and 11844 transitions. [2021-06-05 20:05:50,087 INFO L78 Accepts]: Start accepts. Automaton has 4436 states and 11844 transitions. Word has length 94 [2021-06-05 20:05:50,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:50,087 INFO L482 AbstractCegarLoop]: Abstraction has 4436 states and 11844 transitions. [2021-06-05 20:05:50,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4436 states and 11844 transitions. [2021-06-05 20:05:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:50,091 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:50,091 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:50,091 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 20:05:50,092 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:50,092 INFO L82 PathProgramCache]: Analyzing trace with hash 2019518185, now seen corresponding path program 56 times [2021-06-05 20:05:50,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:50,092 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335483854] [2021-06-05 20:05:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:50,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:50,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335483854] [2021-06-05 20:05:50,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335483854] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:50,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:50,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:50,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884505424] [2021-06-05 20:05:50,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:50,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:50,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:50,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:50,605 INFO L87 Difference]: Start difference. First operand 4436 states and 11844 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:51,149 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-06-05 20:05:51,555 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:51,870 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:05:52,027 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:05:52,221 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:05:52,422 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:05:52,603 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:05:52,828 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:05:53,173 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:05:53,323 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:05:53,467 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:05:53,618 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:05:53,745 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:05:53,910 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:05:54,102 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:05:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:54,111 INFO L93 Difference]: Finished difference Result 7195 states and 18245 transitions. [2021-06-05 20:05:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:05:54,111 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:54,116 INFO L225 Difference]: With dead ends: 7195 [2021-06-05 20:05:54,116 INFO L226 Difference]: Without dead ends: 7195 [2021-06-05 20:05:54,116 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3137.9ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:05:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7195 states. [2021-06-05 20:05:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7195 to 4434. [2021-06-05 20:05:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4432 states have (on average 2.6712545126353793) internal successors, (11839), 4433 states have internal predecessors, (11839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 11839 transitions. [2021-06-05 20:05:54,188 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 11839 transitions. Word has length 94 [2021-06-05 20:05:54,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:54,189 INFO L482 AbstractCegarLoop]: Abstraction has 4434 states and 11839 transitions. [2021-06-05 20:05:54,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 11839 transitions. [2021-06-05 20:05:54,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:54,193 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:54,193 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:54,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 20:05:54,193 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:54,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1815885175, now seen corresponding path program 57 times [2021-06-05 20:05:54,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:54,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499670866] [2021-06-05 20:05:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:54,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:54,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:54,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499670866] [2021-06-05 20:05:54,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499670866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:54,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:54,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:54,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242825418] [2021-06-05 20:05:54,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:54,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:54,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:54,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:54,686 INFO L87 Difference]: Start difference. First operand 4434 states and 11839 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:55,553 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:55,737 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:05:55,922 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:05:56,337 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:05:56,548 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:05:56,750 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:05:57,102 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:05:57,279 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:05:57,459 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:05:57,648 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:05:57,815 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:05:58,011 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:05:58,192 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:05:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:05:58,198 INFO L93 Difference]: Finished difference Result 8764 states and 22230 transitions. [2021-06-05 20:05:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:05:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:05:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:05:58,204 INFO L225 Difference]: With dead ends: 8764 [2021-06-05 20:05:58,204 INFO L226 Difference]: Without dead ends: 8764 [2021-06-05 20:05:58,205 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3129.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:05:58,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2021-06-05 20:05:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 4482. [2021-06-05 20:05:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.6747767857142857) internal successors, (11983), 4481 states have internal predecessors, (11983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11983 transitions. [2021-06-05 20:05:58,274 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11983 transitions. Word has length 94 [2021-06-05 20:05:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:05:58,274 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11983 transitions. [2021-06-05 20:05:58,275 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11983 transitions. [2021-06-05 20:05:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:05:58,278 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:05:58,279 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:05:58,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 20:05:58,279 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:05:58,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:05:58,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1525779797, now seen corresponding path program 58 times [2021-06-05 20:05:58,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:05:58,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922453081] [2021-06-05 20:05:58,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:05:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:05:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:05:58,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:05:58,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922453081] [2021-06-05 20:05:58,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922453081] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:05:58,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:05:58,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:05:58,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452087876] [2021-06-05 20:05:58,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:05:58,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:05:58,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:05:58,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:05:58,908 INFO L87 Difference]: Start difference. First operand 4482 states and 11983 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:05:59,764 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:05:59,985 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:00,166 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:06:00,388 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:06:00,650 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:06:01,043 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:06:01,251 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:06:01,577 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:06:01,781 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:06:01,993 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:06:02,207 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:06:02,410 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:06:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:02,417 INFO L93 Difference]: Finished difference Result 9438 states and 24026 transitions. [2021-06-05 20:06:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:06:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:02,426 INFO L225 Difference]: With dead ends: 9438 [2021-06-05 20:06:02,426 INFO L226 Difference]: Without dead ends: 9438 [2021-06-05 20:06:02,426 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3160.3ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:06:02,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-06-05 20:06:02,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 4446. [2021-06-05 20:06:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.672142214221422) internal successors, (11875), 4445 states have internal predecessors, (11875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11875 transitions. [2021-06-05 20:06:02,508 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11875 transitions. Word has length 94 [2021-06-05 20:06:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:02,508 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11875 transitions. [2021-06-05 20:06:02,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11875 transitions. [2021-06-05 20:06:02,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:02,512 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:02,512 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:02,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 20:06:02,512 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:02,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:02,512 INFO L82 PathProgramCache]: Analyzing trace with hash -371436355, now seen corresponding path program 59 times [2021-06-05 20:06:02,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:02,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594321357] [2021-06-05 20:06:02,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:03,099 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:03,099 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594321357] [2021-06-05 20:06:03,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594321357] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:03,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:03,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:03,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055539850] [2021-06-05 20:06:03,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:03,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:03,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:03,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:03,100 INFO L87 Difference]: Start difference. First operand 4446 states and 11875 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:03,947 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:06:04,137 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:04,522 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:04,701 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:06:04,930 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:06:05,142 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:06:05,460 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:06:05,633 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:06:05,832 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:06:06,007 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:06:06,184 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:06,367 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:06:06,537 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:06:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:06,547 INFO L93 Difference]: Finished difference Result 8388 states and 21238 transitions. [2021-06-05 20:06:06,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:06:06,547 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:06,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:06,553 INFO L225 Difference]: With dead ends: 8388 [2021-06-05 20:06:06,553 INFO L226 Difference]: Without dead ends: 8388 [2021-06-05 20:06:06,553 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3133.0ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:06:06,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8388 states. [2021-06-05 20:06:06,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8388 to 4448. [2021-06-05 20:06:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.672064777327935) internal successors, (11880), 4447 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11880 transitions. [2021-06-05 20:06:06,626 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11880 transitions. Word has length 94 [2021-06-05 20:06:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:06,626 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11880 transitions. [2021-06-05 20:06:06,626 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11880 transitions. [2021-06-05 20:06:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:06,630 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:06,630 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:06,630 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 20:06:06,630 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:06,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:06,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1397099399, now seen corresponding path program 60 times [2021-06-05 20:06:06,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:06,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934348474] [2021-06-05 20:06:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:07,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:07,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:07,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934348474] [2021-06-05 20:06:07,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934348474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:07,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:07,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:07,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537995358] [2021-06-05 20:06:07,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:07,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:07,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:07,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:07,152 INFO L87 Difference]: Start difference. First operand 4448 states and 11880 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:08,005 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:06:08,197 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:08,564 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:08,779 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:06:09,017 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:06:09,210 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:06:09,436 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:06:09,787 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:06:09,953 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:06:10,143 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:06:10,316 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:06:10,466 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:10,629 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:06:10,847 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:06:10,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:10,853 INFO L93 Difference]: Finished difference Result 8370 states and 21200 transitions. [2021-06-05 20:06:10,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:06:10,854 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:10,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:10,861 INFO L225 Difference]: With dead ends: 8370 [2021-06-05 20:06:10,861 INFO L226 Difference]: Without dead ends: 8370 [2021-06-05 20:06:10,861 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3352.1ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:06:10,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-06-05 20:06:10,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 4446. [2021-06-05 20:06:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.672142214221422) internal successors, (11875), 4445 states have internal predecessors, (11875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11875 transitions. [2021-06-05 20:06:10,935 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11875 transitions. Word has length 94 [2021-06-05 20:06:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:10,935 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11875 transitions. [2021-06-05 20:06:10,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11875 transitions. [2021-06-05 20:06:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:10,939 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:10,939 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:10,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 20:06:10,940 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:10,940 INFO L82 PathProgramCache]: Analyzing trace with hash 2072286407, now seen corresponding path program 61 times [2021-06-05 20:06:10,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:10,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937689881] [2021-06-05 20:06:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:11,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:11,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:11,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937689881] [2021-06-05 20:06:11,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937689881] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:11,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:11,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:11,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983042555] [2021-06-05 20:06:11,488 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:11,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:11,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:11,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:11,489 INFO L87 Difference]: Start difference. First operand 4446 states and 11875 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:12,424 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:06:12,637 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:12,832 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 20:06:13,045 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-06-05 20:06:13,217 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:06:13,440 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 20:06:13,891 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-06-05 20:06:14,098 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:06:14,318 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:06:14,727 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 20:06:14,925 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-06-05 20:06:15,159 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:06:15,381 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-06-05 20:06:15,607 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:06:15,847 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-06-05 20:06:16,040 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-06-05 20:06:16,265 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:06:16,463 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:06:16,670 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:06:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:16,680 INFO L93 Difference]: Finished difference Result 8743 states and 22229 transitions. [2021-06-05 20:06:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 20:06:16,680 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:16,686 INFO L225 Difference]: With dead ends: 8743 [2021-06-05 20:06:16,686 INFO L226 Difference]: Without dead ends: 8743 [2021-06-05 20:06:16,687 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4598.7ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 20:06:16,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2021-06-05 20:06:16,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 4458. [2021-06-05 20:06:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6730251346499103) internal successors, (11911), 4457 states have internal predecessors, (11911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11911 transitions. [2021-06-05 20:06:16,758 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11911 transitions. Word has length 94 [2021-06-05 20:06:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:16,758 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11911 transitions. [2021-06-05 20:06:16,758 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11911 transitions. [2021-06-05 20:06:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:16,762 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:16,762 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:16,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 20:06:16,763 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:16,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:16,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1184860991, now seen corresponding path program 62 times [2021-06-05 20:06:16,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:16,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358241518] [2021-06-05 20:06:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:17,319 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:17,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358241518] [2021-06-05 20:06:17,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358241518] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:17,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:17,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:17,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307370216] [2021-06-05 20:06:17,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:17,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:17,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:17,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:17,320 INFO L87 Difference]: Start difference. First operand 4458 states and 11911 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:18,043 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-06-05 20:06:18,212 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:06:18,410 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:18,603 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 20:06:18,814 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:06:19,210 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:06:19,407 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:06:19,589 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:06:19,810 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:06:20,186 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 20:06:20,386 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:06:20,589 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:06:20,763 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:06:20,972 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-06-05 20:06:21,199 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:06:21,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:21,206 INFO L93 Difference]: Finished difference Result 7912 states and 20148 transitions. [2021-06-05 20:06:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:06:21,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:21,212 INFO L225 Difference]: With dead ends: 7912 [2021-06-05 20:06:21,213 INFO L226 Difference]: Without dead ends: 7912 [2021-06-05 20:06:21,213 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3440.0ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:06:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7912 states. [2021-06-05 20:06:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7912 to 4434. [2021-06-05 20:06:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4432 states have (on average 2.6712545126353793) internal successors, (11839), 4433 states have internal predecessors, (11839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 11839 transitions. [2021-06-05 20:06:21,278 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 11839 transitions. Word has length 94 [2021-06-05 20:06:21,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:21,278 INFO L482 AbstractCegarLoop]: Abstraction has 4434 states and 11839 transitions. [2021-06-05 20:06:21,278 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:21,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 11839 transitions. [2021-06-05 20:06:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:21,282 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:21,282 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:21,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 20:06:21,282 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:21,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:21,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1162417289, now seen corresponding path program 63 times [2021-06-05 20:06:21,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:21,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705760124] [2021-06-05 20:06:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:21,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:21,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:21,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705760124] [2021-06-05 20:06:21,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705760124] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:21,805 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:21,805 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:21,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759302929] [2021-06-05 20:06:21,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:21,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:21,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:21,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:21,806 INFO L87 Difference]: Start difference. First operand 4434 states and 11839 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:22,300 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-06-05 20:06:23,350 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:06:23,501 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:06:23,695 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:06:23,910 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:06:24,147 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:06:24,935 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:06:25,069 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-06-05 20:06:25,312 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:06:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:25,453 INFO L93 Difference]: Finished difference Result 7486 states and 18942 transitions. [2021-06-05 20:06:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:06:25,453 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:25,459 INFO L225 Difference]: With dead ends: 7486 [2021-06-05 20:06:25,459 INFO L226 Difference]: Without dead ends: 7486 [2021-06-05 20:06:25,459 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2736.1ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:06:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7486 states. [2021-06-05 20:06:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7486 to 4446. [2021-06-05 20:06:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-06-05 20:06:25,523 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-06-05 20:06:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:25,523 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-06-05 20:06:25,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-06-05 20:06:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:25,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:25,528 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:25,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 20:06:25,528 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:25,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1222085873, now seen corresponding path program 64 times [2021-06-05 20:06:25,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:25,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303686203] [2021-06-05 20:06:25,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:26,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:26,027 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303686203] [2021-06-05 20:06:26,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303686203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:26,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:26,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:26,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625932360] [2021-06-05 20:06:26,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:26,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:26,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:26,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:26,027 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:27,203 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:06:27,364 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:27,624 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:06:27,859 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:06:28,088 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:06:28,531 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:06:28,659 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:06:28,796 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-06-05 20:06:29,039 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:06:29,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:29,180 INFO L93 Difference]: Finished difference Result 7964 states and 19878 transitions. [2021-06-05 20:06:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:06:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:29,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:29,187 INFO L225 Difference]: With dead ends: 7964 [2021-06-05 20:06:29,188 INFO L226 Difference]: Without dead ends: 7964 [2021-06-05 20:06:29,188 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2695.3ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:06:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7964 states. [2021-06-05 20:06:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7964 to 4448. [2021-06-05 20:06:29,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.670715249662618) internal successors, (11874), 4447 states have internal predecessors, (11874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11874 transitions. [2021-06-05 20:06:29,262 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11874 transitions. Word has length 94 [2021-06-05 20:06:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:29,262 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11874 transitions. [2021-06-05 20:06:29,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11874 transitions. [2021-06-05 20:06:29,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:29,266 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:29,266 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:29,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 20:06:29,266 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:29,266 INFO L82 PathProgramCache]: Analyzing trace with hash 458927873, now seen corresponding path program 65 times [2021-06-05 20:06:29,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:29,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301063397] [2021-06-05 20:06:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:29,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:29,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301063397] [2021-06-05 20:06:29,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301063397] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:29,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:29,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:29,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740350331] [2021-06-05 20:06:29,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:29,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:29,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:29,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:29,836 INFO L87 Difference]: Start difference. First operand 4448 states and 11874 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:30,540 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-06-05 20:06:31,003 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:06:31,248 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:31,437 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:06:31,649 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:06:31,854 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:06:32,075 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:06:32,512 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:06:32,641 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:06:32,778 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-06-05 20:06:33,020 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:06:33,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:33,159 INFO L93 Difference]: Finished difference Result 7762 states and 19474 transitions. [2021-06-05 20:06:33,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:06:33,160 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:33,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:33,167 INFO L225 Difference]: With dead ends: 7762 [2021-06-05 20:06:33,167 INFO L226 Difference]: Without dead ends: 7762 [2021-06-05 20:06:33,168 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2919.8ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:06:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2021-06-05 20:06:33,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 4442. [2021-06-05 20:06:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4440 states have (on average 2.670945945945946) internal successors, (11859), 4441 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:33,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 11859 transitions. [2021-06-05 20:06:33,243 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 11859 transitions. Word has length 94 [2021-06-05 20:06:33,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:33,243 INFO L482 AbstractCegarLoop]: Abstraction has 4442 states and 11859 transitions. [2021-06-05 20:06:33,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 11859 transitions. [2021-06-05 20:06:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:33,247 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:33,247 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:33,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 20:06:33,247 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:33,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:33,248 INFO L82 PathProgramCache]: Analyzing trace with hash -974517769, now seen corresponding path program 66 times [2021-06-05 20:06:33,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:33,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711724628] [2021-06-05 20:06:33,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:33,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:33,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:33,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711724628] [2021-06-05 20:06:33,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711724628] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:33,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:33,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:33,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152094622] [2021-06-05 20:06:33,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:33,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:33,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:33,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:33,754 INFO L87 Difference]: Start difference. First operand 4442 states and 11859 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:34,882 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:06:35,053 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:35,233 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:06:35,447 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:06:35,667 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:06:36,194 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:06:36,329 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-06-05 20:06:36,464 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-06-05 20:06:36,624 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:06:36,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:36,768 INFO L93 Difference]: Finished difference Result 7567 states and 19042 transitions. [2021-06-05 20:06:36,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:06:36,768 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:36,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:36,774 INFO L225 Difference]: With dead ends: 7567 [2021-06-05 20:06:36,774 INFO L226 Difference]: Without dead ends: 7567 [2021-06-05 20:06:36,774 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2731.5ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:06:36,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7567 states. [2021-06-05 20:06:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7567 to 4448. [2021-06-05 20:06:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.670715249662618) internal successors, (11874), 4447 states have internal predecessors, (11874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11874 transitions. [2021-06-05 20:06:36,839 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11874 transitions. Word has length 94 [2021-06-05 20:06:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:36,839 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11874 transitions. [2021-06-05 20:06:36,839 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:36,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11874 transitions. [2021-06-05 20:06:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:36,843 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:36,843 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:36,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 20:06:36,843 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:36,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:36,844 INFO L82 PathProgramCache]: Analyzing trace with hash 706495977, now seen corresponding path program 67 times [2021-06-05 20:06:36,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:36,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168904309] [2021-06-05 20:06:36,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:37,424 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:37,424 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168904309] [2021-06-05 20:06:37,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168904309] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:37,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:37,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:37,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126087619] [2021-06-05 20:06:37,425 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:37,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:37,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:37,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:37,425 INFO L87 Difference]: Start difference. First operand 4448 states and 11874 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:38,584 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:06:38,768 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:38,972 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:06:39,203 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:06:39,394 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:06:39,648 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:06:40,095 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:06:40,225 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:06:40,362 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-06-05 20:06:40,608 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:06:40,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:40,748 INFO L93 Difference]: Finished difference Result 7841 states and 19569 transitions. [2021-06-05 20:06:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:06:40,748 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:40,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:40,754 INFO L225 Difference]: With dead ends: 7841 [2021-06-05 20:06:40,754 INFO L226 Difference]: Without dead ends: 7841 [2021-06-05 20:06:40,754 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3034.8ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:06:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7841 states. [2021-06-05 20:06:40,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7841 to 4446. [2021-06-05 20:06:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-06-05 20:06:40,822 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-06-05 20:06:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:40,822 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-06-05 20:06:40,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-06-05 20:06:40,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:40,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:40,827 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:40,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 20:06:40,827 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:40,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:40,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1796789299, now seen corresponding path program 68 times [2021-06-05 20:06:40,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:40,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415446271] [2021-06-05 20:06:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:41,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:41,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415446271] [2021-06-05 20:06:41,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415446271] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:41,521 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:41,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:41,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105259746] [2021-06-05 20:06:41,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:41,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:41,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:41,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:41,522 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:42,695 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:06:42,861 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:06:43,038 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:06:43,215 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:06:43,427 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:06:43,607 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:06:43,834 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:06:44,364 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:06:44,499 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-06-05 20:06:44,742 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:06:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:44,881 INFO L93 Difference]: Finished difference Result 7363 states and 18633 transitions. [2021-06-05 20:06:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:06:44,882 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:44,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:44,888 INFO L225 Difference]: With dead ends: 7363 [2021-06-05 20:06:44,888 INFO L226 Difference]: Without dead ends: 7363 [2021-06-05 20:06:44,888 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3225.1ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:06:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2021-06-05 20:06:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 4442. [2021-06-05 20:06:44,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4440 states have (on average 2.670945945945946) internal successors, (11859), 4441 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 11859 transitions. [2021-06-05 20:06:44,949 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 11859 transitions. Word has length 94 [2021-06-05 20:06:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:44,949 INFO L482 AbstractCegarLoop]: Abstraction has 4442 states and 11859 transitions. [2021-06-05 20:06:44,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 11859 transitions. [2021-06-05 20:06:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:44,962 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:44,962 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:44,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 20:06:44,962 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:44,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:44,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1422080281, now seen corresponding path program 69 times [2021-06-05 20:06:44,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:44,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718280091] [2021-06-05 20:06:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:45,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:45,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:45,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718280091] [2021-06-05 20:06:45,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718280091] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:45,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:45,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:45,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131454901] [2021-06-05 20:06:45,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:45,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:45,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:45,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:45,518 INFO L87 Difference]: Start difference. First operand 4442 states and 11859 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:46,351 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:06:46,545 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:46,727 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:06:47,109 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:06:47,310 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:06:47,537 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:06:47,887 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:06:48,202 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:06:48,383 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:06:48,572 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:06:48,808 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:06:48,984 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:06:49,164 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:06:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:49,170 INFO L93 Difference]: Finished difference Result 9126 states and 23201 transitions. [2021-06-05 20:06:49,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:06:49,171 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:49,179 INFO L225 Difference]: With dead ends: 9126 [2021-06-05 20:06:49,179 INFO L226 Difference]: Without dead ends: 9126 [2021-06-05 20:06:49,180 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3317.3ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:06:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9126 states. [2021-06-05 20:06:49,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9126 to 4514. [2021-06-05 20:06:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 4512 states have (on average 2.6761968085106385) internal successors, (12075), 4513 states have internal predecessors, (12075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:49,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 12075 transitions. [2021-06-05 20:06:49,251 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 12075 transitions. Word has length 94 [2021-06-05 20:06:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:49,251 INFO L482 AbstractCegarLoop]: Abstraction has 4514 states and 12075 transitions. [2021-06-05 20:06:49,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:49,252 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 12075 transitions. [2021-06-05 20:06:49,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:49,255 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:49,257 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:49,257 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 20:06:49,257 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:49,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:49,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1131974903, now seen corresponding path program 70 times [2021-06-05 20:06:49,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:49,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614778449] [2021-06-05 20:06:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:49,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:49,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614778449] [2021-06-05 20:06:49,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614778449] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:49,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:49,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:49,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517521201] [2021-06-05 20:06:49,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:49,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:49,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:49,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:49,752 INFO L87 Difference]: Start difference. First operand 4514 states and 12075 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:50,686 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:06:50,877 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:51,055 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:06:51,271 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:06:51,513 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:06:51,898 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:06:52,116 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:06:52,476 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:06:52,696 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:06:52,924 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:06:53,143 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:06:53,353 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:06:53,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:53,360 INFO L93 Difference]: Finished difference Result 9800 states and 24997 transitions. [2021-06-05 20:06:53,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:06:53,361 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:53,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:53,370 INFO L225 Difference]: With dead ends: 9800 [2021-06-05 20:06:53,370 INFO L226 Difference]: Without dead ends: 9800 [2021-06-05 20:06:53,370 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3193.4ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:06:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2021-06-05 20:06:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 4478. [2021-06-05 20:06:53,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.673592493297587) internal successors, (11967), 4477 states have internal predecessors, (11967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:53,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11967 transitions. [2021-06-05 20:06:53,458 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11967 transitions. Word has length 94 [2021-06-05 20:06:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:53,458 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11967 transitions. [2021-06-05 20:06:53,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11967 transitions. [2021-06-05 20:06:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:53,462 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:53,462 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:53,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 20:06:53,462 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:53,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:53,463 INFO L82 PathProgramCache]: Analyzing trace with hash -765241249, now seen corresponding path program 71 times [2021-06-05 20:06:53,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:53,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101313219] [2021-06-05 20:06:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:53,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:53,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101313219] [2021-06-05 20:06:53,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101313219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:53,995 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:53,995 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:53,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337865001] [2021-06-05 20:06:53,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:53,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:53,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:53,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:53,996 INFO L87 Difference]: Start difference. First operand 4478 states and 11967 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:54,857 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:06:55,050 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:55,439 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:55,609 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:06:55,831 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:06:56,045 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:06:56,364 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:06:56,535 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:06:56,701 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:06:56,873 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:06:57,017 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:57,183 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:06:57,351 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:06:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:06:57,361 INFO L93 Difference]: Finished difference Result 9574 states and 24200 transitions. [2021-06-05 20:06:57,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:06:57,362 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:06:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:06:57,370 INFO L225 Difference]: With dead ends: 9574 [2021-06-05 20:06:57,370 INFO L226 Difference]: Without dead ends: 9574 [2021-06-05 20:06:57,371 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2984.3ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:06:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9574 states. [2021-06-05 20:06:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9574 to 4480. [2021-06-05 20:06:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4478 states have (on average 2.6735149620366236) internal successors, (11972), 4479 states have internal predecessors, (11972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 11972 transitions. [2021-06-05 20:06:57,458 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 11972 transitions. Word has length 94 [2021-06-05 20:06:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:06:57,458 INFO L482 AbstractCegarLoop]: Abstraction has 4480 states and 11972 transitions. [2021-06-05 20:06:57,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:57,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 11972 transitions. [2021-06-05 20:06:57,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:06:57,461 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:06:57,461 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:06:57,462 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 20:06:57,462 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:06:57,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:06:57,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1003294505, now seen corresponding path program 72 times [2021-06-05 20:06:57,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:06:57,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751540196] [2021-06-05 20:06:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:06:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:06:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:06:58,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:06:58,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751540196] [2021-06-05 20:06:58,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751540196] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:06:58,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:06:58,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:06:58,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993046704] [2021-06-05 20:06:58,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:06:58,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:06:58,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:06:58,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:06:58,003 INFO L87 Difference]: Start difference. First operand 4480 states and 11972 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:06:58,870 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:06:59,068 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:06:59,454 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:06:59,637 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:06:59,834 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:00,016 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:00,232 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:00,623 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:07:00,789 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:07:00,954 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:07:01,128 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:07:01,280 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:01,447 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:01,614 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:07:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:01,621 INFO L93 Difference]: Finished difference Result 9556 states and 24162 transitions. [2021-06-05 20:07:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:07:01,621 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:01,628 INFO L225 Difference]: With dead ends: 9556 [2021-06-05 20:07:01,628 INFO L226 Difference]: Without dead ends: 9556 [2021-06-05 20:07:01,628 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3152.5ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:07:01,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9556 states. [2021-06-05 20:07:01,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9556 to 4478. [2021-06-05 20:07:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4476 states have (on average 2.673592493297587) internal successors, (11967), 4477 states have internal predecessors, (11967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:01,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 11967 transitions. [2021-06-05 20:07:01,702 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 11967 transitions. Word has length 94 [2021-06-05 20:07:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:01,702 INFO L482 AbstractCegarLoop]: Abstraction has 4478 states and 11967 transitions. [2021-06-05 20:07:01,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 11967 transitions. [2021-06-05 20:07:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:01,706 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:01,706 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:01,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 20:07:01,706 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1678481513, now seen corresponding path program 73 times [2021-06-05 20:07:01,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:01,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794269453] [2021-06-05 20:07:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:02,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:02,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794269453] [2021-06-05 20:07:02,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794269453] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:02,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:02,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:02,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080302919] [2021-06-05 20:07:02,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:02,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:02,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:02,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:02,236 INFO L87 Difference]: Start difference. First operand 4478 states and 11967 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:03,253 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:07:03,433 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:07:03,627 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:07:03,792 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:07:04,015 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:07:04,398 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:07:04,567 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:04,760 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:07:05,092 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:07:05,283 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:07:05,481 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:07:05,685 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:07:05,871 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:07:06,089 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:07:06,268 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:07:06,476 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:07:06,654 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:06,860 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:07:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:06,871 INFO L93 Difference]: Finished difference Result 11017 states and 27842 transitions. [2021-06-05 20:07:06,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 20:07:06,871 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:06,879 INFO L225 Difference]: With dead ends: 11017 [2021-06-05 20:07:06,879 INFO L226 Difference]: Without dead ends: 11017 [2021-06-05 20:07:06,879 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4246.3ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 20:07:06,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11017 states. [2021-06-05 20:07:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11017 to 4490. [2021-06-05 20:07:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.674465240641711) internal successors, (12003), 4489 states have internal predecessors, (12003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12003 transitions. [2021-06-05 20:07:06,958 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12003 transitions. Word has length 94 [2021-06-05 20:07:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:06,958 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12003 transitions. [2021-06-05 20:07:06,958 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12003 transitions. [2021-06-05 20:07:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:06,962 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:06,962 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:06,962 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 20:07:06,962 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:06,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1578665885, now seen corresponding path program 74 times [2021-06-05 20:07:06,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:06,962 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027643416] [2021-06-05 20:07:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:07,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:07,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027643416] [2021-06-05 20:07:07,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027643416] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:07,490 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:07,490 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:07,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652836062] [2021-06-05 20:07:07,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:07,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:07,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:07,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:07,491 INFO L87 Difference]: Start difference. First operand 4490 states and 12003 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:08,493 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:07:08,683 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:07:08,872 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:07:09,214 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:09,400 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:09,576 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:09,787 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:10,133 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:07:10,319 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:07:10,515 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:07:10,687 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:10,872 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:07:11,067 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:11,074 INFO L93 Difference]: Finished difference Result 10186 states and 25761 transitions. [2021-06-05 20:07:11,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:07:11,074 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:11,084 INFO L225 Difference]: With dead ends: 10186 [2021-06-05 20:07:11,084 INFO L226 Difference]: Without dead ends: 10186 [2021-06-05 20:07:11,084 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3281.3ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:07:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2021-06-05 20:07:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 4466. [2021-06-05 20:07:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.672715053763441) internal successors, (11931), 4465 states have internal predecessors, (11931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11931 transitions. [2021-06-05 20:07:11,162 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11931 transitions. Word has length 94 [2021-06-05 20:07:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:11,163 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11931 transitions. [2021-06-05 20:07:11,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11931 transitions. [2021-06-05 20:07:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:11,166 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:11,166 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:11,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 20:07:11,166 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:11,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1551607467, now seen corresponding path program 75 times [2021-06-05 20:07:11,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:11,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862660731] [2021-06-05 20:07:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:11,651 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:11,651 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862660731] [2021-06-05 20:07:11,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862660731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:11,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:11,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:11,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113062633] [2021-06-05 20:07:11,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:11,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:11,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:11,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:11,652 INFO L87 Difference]: Start difference. First operand 4466 states and 11931 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:12,448 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:07:12,780 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:12,933 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:13,095 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:07:13,299 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:07:13,516 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:07:13,822 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:07:13,969 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:07:14,116 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:07:14,294 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:07:14,417 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:14,562 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:07:14,709 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:07:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:14,718 INFO L93 Difference]: Finished difference Result 8748 states and 22178 transitions. [2021-06-05 20:07:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:07:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:14,725 INFO L225 Difference]: With dead ends: 8748 [2021-06-05 20:07:14,725 INFO L226 Difference]: Without dead ends: 8748 [2021-06-05 20:07:14,725 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2737.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:07:14,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8748 states. [2021-06-05 20:07:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8748 to 4472. [2021-06-05 20:07:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4470 states have (on average 2.67248322147651) internal successors, (11946), 4471 states have internal predecessors, (11946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 11946 transitions. [2021-06-05 20:07:14,788 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 11946 transitions. Word has length 94 [2021-06-05 20:07:14,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:14,788 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 11946 transitions. [2021-06-05 20:07:14,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 11946 transitions. [2021-06-05 20:07:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:14,791 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:14,791 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:14,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 20:07:14,791 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:14,792 INFO L82 PathProgramCache]: Analyzing trace with hash 216928287, now seen corresponding path program 76 times [2021-06-05 20:07:14,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:14,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268506455] [2021-06-05 20:07:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:15,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:15,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:15,254 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268506455] [2021-06-05 20:07:15,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268506455] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:15,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:15,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:15,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270118759] [2021-06-05 20:07:15,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:15,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:15,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:15,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:15,254 INFO L87 Difference]: Start difference. First operand 4472 states and 11946 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:16,483 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:16,636 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:16,810 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:17,015 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:17,198 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:17,412 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:17,757 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:07:17,907 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:07:18,050 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:07:18,216 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:07:18,343 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:18,487 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:07:18,639 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:07:18,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:18,648 INFO L93 Difference]: Finished difference Result 9022 states and 22705 transitions. [2021-06-05 20:07:18,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:07:18,649 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:18,657 INFO L225 Difference]: With dead ends: 9022 [2021-06-05 20:07:18,657 INFO L226 Difference]: Without dead ends: 9022 [2021-06-05 20:07:18,657 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2909.1ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:07:18,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9022 states. [2021-06-05 20:07:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9022 to 4470. [2021-06-05 20:07:18,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 4468 states have (on average 2.6725604297224708) internal successors, (11941), 4469 states have internal predecessors, (11941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:18,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 11941 transitions. [2021-06-05 20:07:18,728 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 11941 transitions. Word has length 94 [2021-06-05 20:07:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:18,728 INFO L482 AbstractCegarLoop]: Abstraction has 4470 states and 11941 transitions. [2021-06-05 20:07:18,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 11941 transitions. [2021-06-05 20:07:18,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:18,732 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:18,732 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:18,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 20:07:18,732 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:18,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:18,732 INFO L82 PathProgramCache]: Analyzing trace with hash -318323883, now seen corresponding path program 77 times [2021-06-05 20:07:18,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:18,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29547329] [2021-06-05 20:07:18,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:19,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:19,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29547329] [2021-06-05 20:07:19,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29547329] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:19,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:19,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:19,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233555656] [2021-06-05 20:07:19,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:19,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:19,208 INFO L87 Difference]: Start difference. First operand 4470 states and 11941 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:20,318 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:20,475 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:07:20,644 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:20,808 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:21,003 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:21,181 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:21,391 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:21,682 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:07:21,843 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:07:21,995 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:07:22,146 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:07:22,286 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:22,423 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:07:22,578 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:07:22,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:22,584 INFO L93 Difference]: Finished difference Result 8772 states and 22231 transitions. [2021-06-05 20:07:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:07:22,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:22,590 INFO L225 Difference]: With dead ends: 8772 [2021-06-05 20:07:22,590 INFO L226 Difference]: Without dead ends: 8772 [2021-06-05 20:07:22,590 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3070.7ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:07:22,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8772 states. [2021-06-05 20:07:22,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8772 to 4466. [2021-06-05 20:07:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.672715053763441) internal successors, (11931), 4465 states have internal predecessors, (11931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:22,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11931 transitions. [2021-06-05 20:07:22,651 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11931 transitions. Word has length 94 [2021-06-05 20:07:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:22,651 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11931 transitions. [2021-06-05 20:07:22,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11931 transitions. [2021-06-05 20:07:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:22,654 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:22,654 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:22,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 20:07:22,655 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:22,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:22,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1478343731, now seen corresponding path program 78 times [2021-06-05 20:07:22,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:22,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829810236] [2021-06-05 20:07:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:23,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:23,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829810236] [2021-06-05 20:07:23,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829810236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:23,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:23,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:23,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898776410] [2021-06-05 20:07:23,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:23,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:23,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:23,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:23,148 INFO L87 Difference]: Start difference. First operand 4466 states and 11931 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:24,156 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:24,336 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:07:24,513 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:07:24,717 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:07:24,881 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:07:25,113 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:07:25,490 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:25,692 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:07:25,860 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:26,072 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:07:26,458 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:07:26,643 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:07:26,801 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:07:26,993 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:07:27,159 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:07:27,366 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:07:27,536 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:07:27,773 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:07:27,953 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:28,168 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:07:28,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:28,178 INFO L93 Difference]: Finished difference Result 9134 states and 23253 transitions. [2021-06-05 20:07:28,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:07:28,178 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:28,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:28,184 INFO L225 Difference]: With dead ends: 9134 [2021-06-05 20:07:28,184 INFO L226 Difference]: Without dead ends: 9134 [2021-06-05 20:07:28,184 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4413.3ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:07:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9134 states. [2021-06-05 20:07:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9134 to 4502. [2021-06-05 20:07:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4500 states have (on average 2.675333333333333) internal successors, (12039), 4501 states have internal predecessors, (12039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:28,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 12039 transitions. [2021-06-05 20:07:28,262 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 12039 transitions. Word has length 94 [2021-06-05 20:07:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:28,262 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 12039 transitions. [2021-06-05 20:07:28,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 12039 transitions. [2021-06-05 20:07:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:28,267 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:28,267 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:28,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 20:07:28,267 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:28,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:28,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1778803667, now seen corresponding path program 79 times [2021-06-05 20:07:28,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:28,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55150468] [2021-06-05 20:07:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:28,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:28,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55150468] [2021-06-05 20:07:28,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55150468] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:28,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:28,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:28,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405725540] [2021-06-05 20:07:28,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:28,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:28,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:28,756 INFO L87 Difference]: Start difference. First operand 4502 states and 12039 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:29,705 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:29,881 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:07:30,061 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:07:30,258 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:07:30,654 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:30,811 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:31,009 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:31,178 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:31,393 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:31,760 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:07:31,928 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:07:32,087 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:07:32,280 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:07:32,450 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:07:32,630 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:07:32,791 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:32,946 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:07:33,118 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:07:33,288 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:33,494 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:33,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:33,504 INFO L93 Difference]: Finished difference Result 9403 states and 23713 transitions. [2021-06-05 20:07:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:07:33,504 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:33,511 INFO L225 Difference]: With dead ends: 9403 [2021-06-05 20:07:33,511 INFO L226 Difference]: Without dead ends: 9403 [2021-06-05 20:07:33,511 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4239.2ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:07:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9403 states. [2021-06-05 20:07:33,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9403 to 4490. [2021-06-05 20:07:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4488 states have (on average 2.674465240641711) internal successors, (12003), 4489 states have internal predecessors, (12003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12003 transitions. [2021-06-05 20:07:33,576 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12003 transitions. Word has length 94 [2021-06-05 20:07:33,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:33,576 INFO L482 AbstractCegarLoop]: Abstraction has 4490 states and 12003 transitions. [2021-06-05 20:07:33,576 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12003 transitions. [2021-06-05 20:07:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:33,579 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:33,580 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:33,580 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 20:07:33,580 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:33,580 INFO L82 PathProgramCache]: Analyzing trace with hash 551134327, now seen corresponding path program 80 times [2021-06-05 20:07:33,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:33,580 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579005247] [2021-06-05 20:07:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:34,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:34,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579005247] [2021-06-05 20:07:34,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579005247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:34,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:34,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:34,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214507672] [2021-06-05 20:07:34,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:34,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:34,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:34,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:34,103 INFO L87 Difference]: Start difference. First operand 4490 states and 12003 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:34,951 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:07:35,122 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:35,309 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:07:35,703 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:07:35,886 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:36,076 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:36,319 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:36,501 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:36,724 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:37,095 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:07:37,288 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:07:37,468 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:07:37,627 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:07:37,800 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:07:37,973 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:37,980 INFO L93 Difference]: Finished difference Result 8230 states and 20966 transitions. [2021-06-05 20:07:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:07:37,980 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:37,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:37,987 INFO L225 Difference]: With dead ends: 8230 [2021-06-05 20:07:37,987 INFO L226 Difference]: Without dead ends: 8230 [2021-06-05 20:07:37,987 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3465.0ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:07:37,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8230 states. [2021-06-05 20:07:38,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8230 to 4442. [2021-06-05 20:07:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4442 states, 4440 states have (on average 2.670945945945946) internal successors, (11859), 4441 states have internal predecessors, (11859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4442 states to 4442 states and 11859 transitions. [2021-06-05 20:07:38,052 INFO L78 Accepts]: Start accepts. Automaton has 4442 states and 11859 transitions. Word has length 94 [2021-06-05 20:07:38,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:38,052 INFO L482 AbstractCegarLoop]: Abstraction has 4442 states and 11859 transitions. [2021-06-05 20:07:38,052 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4442 states and 11859 transitions. [2021-06-05 20:07:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:38,056 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:38,056 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:38,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 20:07:38,056 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:38,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1575412215, now seen corresponding path program 81 times [2021-06-05 20:07:38,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:38,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77004228] [2021-06-05 20:07:38,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:38,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:38,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77004228] [2021-06-05 20:07:38,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77004228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:38,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:38,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:38,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132635467] [2021-06-05 20:07:38,512 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:38,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:38,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:38,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:38,513 INFO L87 Difference]: Start difference. First operand 4442 states and 11859 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:39,742 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:07:39,944 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:07:40,165 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:07:40,387 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:07:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:41,334 INFO L93 Difference]: Finished difference Result 7633 states and 19293 transitions. [2021-06-05 20:07:41,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:07:41,334 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:41,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:41,341 INFO L225 Difference]: With dead ends: 7633 [2021-06-05 20:07:41,342 INFO L226 Difference]: Without dead ends: 7633 [2021-06-05 20:07:41,342 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2535.0ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:07:41,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7633 states. [2021-06-05 20:07:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7633 to 4458. [2021-06-05 20:07:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6703321364452424) internal successors, (11899), 4457 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11899 transitions. [2021-06-05 20:07:41,465 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11899 transitions. Word has length 94 [2021-06-05 20:07:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:41,465 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11899 transitions. [2021-06-05 20:07:41,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11899 transitions. [2021-06-05 20:07:41,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:41,468 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:41,468 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:41,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 20:07:41,468 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1515743631, now seen corresponding path program 82 times [2021-06-05 20:07:41,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:41,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595902936] [2021-06-05 20:07:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:42,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:42,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:42,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595902936] [2021-06-05 20:07:42,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595902936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:42,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:42,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:42,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843189320] [2021-06-05 20:07:42,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:42,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:42,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:42,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:42,002 INFO L87 Difference]: Start difference. First operand 4458 states and 11899 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:43,098 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:07:43,269 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:43,453 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:07:43,675 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:07:43,891 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:07:44,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:44,828 INFO L93 Difference]: Finished difference Result 8111 states and 20229 transitions. [2021-06-05 20:07:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:07:44,829 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:44,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:44,836 INFO L225 Difference]: With dead ends: 8111 [2021-06-05 20:07:44,836 INFO L226 Difference]: Without dead ends: 8111 [2021-06-05 20:07:44,837 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2533.5ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:07:44,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8111 states. [2021-06-05 20:07:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8111 to 4460. [2021-06-05 20:07:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-06-05 20:07:44,917 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-06-05 20:07:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:44,917 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-06-05 20:07:44,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-06-05 20:07:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:44,921 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:44,921 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:44,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 20:07:44,921 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:44,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:44,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1098209919, now seen corresponding path program 83 times [2021-06-05 20:07:44,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:44,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662641232] [2021-06-05 20:07:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:45,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:45,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662641232] [2021-06-05 20:07:45,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662641232] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:45,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:45,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:45,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492053020] [2021-06-05 20:07:45,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:45,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:45,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:45,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:45,391 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:46,619 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:46,801 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:07:46,995 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:07:47,163 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:07:47,372 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:48,371 INFO L93 Difference]: Finished difference Result 7909 states and 19825 transitions. [2021-06-05 20:07:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:07:48,371 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:48,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:48,377 INFO L225 Difference]: With dead ends: 7909 [2021-06-05 20:07:48,377 INFO L226 Difference]: Without dead ends: 7909 [2021-06-05 20:07:48,377 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2578.3ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:07:48,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2021-06-05 20:07:48,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 4454. [2021-06-05 20:07:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-06-05 20:07:48,438 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-06-05 20:07:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:48,438 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-06-05 20:07:48,438 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-06-05 20:07:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:48,442 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:48,442 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:48,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 20:07:48,442 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:48,442 INFO L82 PathProgramCache]: Analyzing trace with hash 1763311735, now seen corresponding path program 84 times [2021-06-05 20:07:48,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:48,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293937350] [2021-06-05 20:07:48,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:48,885 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:48,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293937350] [2021-06-05 20:07:48,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293937350] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:48,885 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:48,885 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:48,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327857415] [2021-06-05 20:07:48,885 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:48,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:48,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:48,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:48,886 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:49,920 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:50,091 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:50,280 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:07:50,485 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:07:50,699 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:07:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:51,609 INFO L93 Difference]: Finished difference Result 8183 states and 20388 transitions. [2021-06-05 20:07:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:07:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:51,616 INFO L225 Difference]: With dead ends: 8183 [2021-06-05 20:07:51,616 INFO L226 Difference]: Without dead ends: 8183 [2021-06-05 20:07:51,616 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2387.2ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:07:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8183 states. [2021-06-05 20:07:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8183 to 4460. [2021-06-05 20:07:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:51,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-06-05 20:07:51,681 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-06-05 20:07:51,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:51,681 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-06-05 20:07:51,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:51,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-06-05 20:07:51,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:51,684 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:51,684 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:51,684 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 20:07:51,684 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:51,684 INFO L82 PathProgramCache]: Analyzing trace with hash -850641815, now seen corresponding path program 85 times [2021-06-05 20:07:51,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:51,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777158011] [2021-06-05 20:07:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:52,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:52,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777158011] [2021-06-05 20:07:52,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777158011] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:52,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:52,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:52,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928235021] [2021-06-05 20:07:52,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:52,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:52,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:52,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:52,161 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:53,204 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:53,376 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:07:53,557 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:53,754 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:53,922 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:54,133 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:55,091 INFO L93 Difference]: Finished difference Result 8457 states and 20915 transitions. [2021-06-05 20:07:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:07:55,092 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:55,099 INFO L225 Difference]: With dead ends: 8457 [2021-06-05 20:07:55,100 INFO L226 Difference]: Without dead ends: 8457 [2021-06-05 20:07:55,100 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2567.3ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:07:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8457 states. [2021-06-05 20:07:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8457 to 4458. [2021-06-05 20:07:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6703321364452424) internal successors, (11899), 4457 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11899 transitions. [2021-06-05 20:07:55,177 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11899 transitions. Word has length 94 [2021-06-05 20:07:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:55,177 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11899 transitions. [2021-06-05 20:07:55,177 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:55,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11899 transitions. [2021-06-05 20:07:55,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:55,181 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:55,181 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:55,181 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 20:07:55,181 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:55,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:55,181 INFO L82 PathProgramCache]: Analyzing trace with hash 239651507, now seen corresponding path program 86 times [2021-06-05 20:07:55,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:55,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124986321] [2021-06-05 20:07:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:55,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:55,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124986321] [2021-06-05 20:07:55,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124986321] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:55,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:55,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:55,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139644599] [2021-06-05 20:07:55,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:55,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:55,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:55,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:55,673 INFO L87 Difference]: Start difference. First operand 4458 states and 11899 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:56,696 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:07:56,856 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:07:57,027 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:07:57,202 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:07:57,425 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:07:57,594 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:07:57,805 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:07:58,431 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-06-05 20:07:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:07:58,756 INFO L93 Difference]: Finished difference Result 7979 states and 19979 transitions. [2021-06-05 20:07:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:07:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:07:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:07:58,761 INFO L225 Difference]: With dead ends: 7979 [2021-06-05 20:07:58,761 INFO L226 Difference]: Without dead ends: 7979 [2021-06-05 20:07:58,761 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2786.7ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:07:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2021-06-05 20:07:58,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 4446. [2021-06-05 20:07:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-06-05 20:07:58,820 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-06-05 20:07:58,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:07:58,820 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-06-05 20:07:58,820 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:07:58,820 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-06-05 20:07:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:07:58,823 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:07:58,823 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:07:58,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 20:07:58,823 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:07:58,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:07:58,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1779482551, now seen corresponding path program 87 times [2021-06-05 20:07:58,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:07:58,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428593890] [2021-06-05 20:07:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:07:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:07:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:07:59,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:07:59,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428593890] [2021-06-05 20:07:59,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428593890] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:07:59,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:07:59,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:07:59,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378115020] [2021-06-05 20:07:59,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:07:59,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:07:59,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:07:59,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:07:59,265 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:00,349 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:00,521 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:00,693 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:08:00,896 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:08:01,127 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:08:02,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:02,057 INFO L93 Difference]: Finished difference Result 7688 states and 19318 transitions. [2021-06-05 20:08:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:08:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:02,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:02,063 INFO L225 Difference]: With dead ends: 7688 [2021-06-05 20:08:02,063 INFO L226 Difference]: Without dead ends: 7688 [2021-06-05 20:08:02,063 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2448.1ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:08:02,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7688 states. [2021-06-05 20:08:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7688 to 4454. [2021-06-05 20:08:02,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-06-05 20:08:02,117 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-06-05 20:08:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:02,118 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-06-05 20:08:02,118 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-06-05 20:08:02,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:02,121 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:02,121 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:02,121 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 20:08:02,121 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:02,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:02,122 INFO L82 PathProgramCache]: Analyzing trace with hash -834470999, now seen corresponding path program 88 times [2021-06-05 20:08:02,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:02,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005660128] [2021-06-05 20:08:02,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:02,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:02,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005660128] [2021-06-05 20:08:02,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005660128] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:02,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:02,584 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:02,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466039093] [2021-06-05 20:08:02,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:02,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:02,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:02,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:02,585 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:03,667 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:03,891 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:04,084 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:04,290 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:08:04,474 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:04,742 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:08:05,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:05,746 INFO L93 Difference]: Finished difference Result 7962 states and 19845 transitions. [2021-06-05 20:08:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:08:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:05,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:05,753 INFO L225 Difference]: With dead ends: 7962 [2021-06-05 20:08:05,753 INFO L226 Difference]: Without dead ends: 7962 [2021-06-05 20:08:05,754 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2797.1ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:08:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7962 states. [2021-06-05 20:08:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7962 to 4452. [2021-06-05 20:08:05,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4450 states have (on average 2.670561797752809) internal successors, (11884), 4451 states have internal predecessors, (11884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 11884 transitions. [2021-06-05 20:08:05,830 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 11884 transitions. Word has length 94 [2021-06-05 20:08:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:05,830 INFO L482 AbstractCegarLoop]: Abstraction has 4452 states and 11884 transitions. [2021-06-05 20:08:05,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 11884 transitions. [2021-06-05 20:08:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:05,834 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:05,834 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:05,834 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 20:08:05,834 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:05,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:05,834 INFO L82 PathProgramCache]: Analyzing trace with hash 255822323, now seen corresponding path program 89 times [2021-06-05 20:08:05,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:05,835 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309270830] [2021-06-05 20:08:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:06,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:06,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309270830] [2021-06-05 20:08:06,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309270830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:06,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:06,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:06,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221326774] [2021-06-05 20:08:06,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:06,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:06,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:06,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:06,413 INFO L87 Difference]: Start difference. First operand 4452 states and 11884 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:08,022 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:08,210 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:08:08,393 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:08:08,580 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:08,795 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:08:09,028 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:09,261 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:08:09,968 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-06-05 20:08:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:10,332 INFO L93 Difference]: Finished difference Result 8028 states and 19989 transitions. [2021-06-05 20:08:10,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:08:10,333 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:10,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:10,340 INFO L225 Difference]: With dead ends: 8028 [2021-06-05 20:08:10,340 INFO L226 Difference]: Without dead ends: 8028 [2021-06-05 20:08:10,341 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3148.5ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:08:10,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8028 states. [2021-06-05 20:08:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8028 to 4448. [2021-06-05 20:08:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 2.670715249662618) internal successors, (11874), 4447 states have internal predecessors, (11874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 11874 transitions. [2021-06-05 20:08:10,427 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 11874 transitions. Word has length 94 [2021-06-05 20:08:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:10,427 INFO L482 AbstractCegarLoop]: Abstraction has 4448 states and 11874 transitions. [2021-06-05 20:08:10,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 11874 transitions. [2021-06-05 20:08:10,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:10,430 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:10,430 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:10,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 20:08:10,431 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:10,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:10,431 INFO L82 PathProgramCache]: Analyzing trace with hash -592317295, now seen corresponding path program 90 times [2021-06-05 20:08:10,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:10,431 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716079895] [2021-06-05 20:08:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:10,949 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:10,949 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716079895] [2021-06-05 20:08:10,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716079895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:10,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:10,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:10,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789972912] [2021-06-05 20:08:10,950 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:10,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:10,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:10,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:10,950 INFO L87 Difference]: Start difference. First operand 4448 states and 11874 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:11,946 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-06-05 20:08:12,435 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:08:12,602 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:08:12,753 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:08:12,934 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:08:13,138 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:13,359 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:08:13,597 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:13,826 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:08:14,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:14,827 INFO L93 Difference]: Finished difference Result 7480 states and 18899 transitions. [2021-06-05 20:08:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:08:14,827 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:14,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:14,834 INFO L225 Difference]: With dead ends: 7480 [2021-06-05 20:08:14,834 INFO L226 Difference]: Without dead ends: 7480 [2021-06-05 20:08:14,834 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3362.1ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:08:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2021-06-05 20:08:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 4446. [2021-06-05 20:08:14,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-06-05 20:08:14,896 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-06-05 20:08:14,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:14,896 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-06-05 20:08:14,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-06-05 20:08:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:14,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:14,900 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:14,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 20:08:14,901 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:14,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1969874521, now seen corresponding path program 91 times [2021-06-05 20:08:14,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:14,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896960979] [2021-06-05 20:08:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:15,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:15,384 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:15,384 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896960979] [2021-06-05 20:08:15,384 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896960979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:15,384 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:15,384 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:15,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141193432] [2021-06-05 20:08:15,384 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:15,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:15,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:15,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:15,385 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:17,479 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:08:17,715 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:17,936 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:08:18,116 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:08:18,475 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:08:18,670 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:08:18,875 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:08:19,178 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:19,357 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:08:19,538 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:19,730 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:08:19,896 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:08:20,077 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:08:20,262 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:08:20,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:20,269 INFO L93 Difference]: Finished difference Result 9484 states and 24162 transitions. [2021-06-05 20:08:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:08:20,269 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:20,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:20,279 INFO L225 Difference]: With dead ends: 9484 [2021-06-05 20:08:20,280 INFO L226 Difference]: Without dead ends: 9484 [2021-06-05 20:08:20,280 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 4176.7ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:08:20,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9484 states. [2021-06-05 20:08:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9484 to 4530. [2021-06-05 20:08:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4530 states, 4528 states have (on average 2.676899293286219) internal successors, (12121), 4529 states have internal predecessors, (12121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4530 states to 4530 states and 12121 transitions. [2021-06-05 20:08:20,372 INFO L78 Accepts]: Start accepts. Automaton has 4530 states and 12121 transitions. Word has length 94 [2021-06-05 20:08:20,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:20,372 INFO L482 AbstractCegarLoop]: Abstraction has 4530 states and 12121 transitions. [2021-06-05 20:08:20,372 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:20,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4530 states and 12121 transitions. [2021-06-05 20:08:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:20,376 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:20,377 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:20,378 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 20:08:20,378 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1679769143, now seen corresponding path program 92 times [2021-06-05 20:08:20,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:20,378 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982478729] [2021-06-05 20:08:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:20,945 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:20,945 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982478729] [2021-06-05 20:08:20,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982478729] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:20,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:20,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:20,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017011015] [2021-06-05 20:08:20,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:20,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:20,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:20,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:20,946 INFO L87 Difference]: Start difference. First operand 4530 states and 12121 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:21,820 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:22,012 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:08:22,191 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:08:22,491 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:08:23,266 WARN L205 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:08:23,682 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:08:23,887 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:08:24,199 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:08:24,428 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:08:24,645 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:08:24,873 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:08:25,079 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:08:25,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:25,087 INFO L93 Difference]: Finished difference Result 10158 states and 25958 transitions. [2021-06-05 20:08:25,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:08:25,087 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:25,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:25,096 INFO L225 Difference]: With dead ends: 10158 [2021-06-05 20:08:25,096 INFO L226 Difference]: Without dead ends: 10158 [2021-06-05 20:08:25,096 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3823.4ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:08:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2021-06-05 20:08:25,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 4494. [2021-06-05 20:08:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4492 states have (on average 2.6743098842386464) internal successors, (12013), 4493 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 12013 transitions. [2021-06-05 20:08:25,176 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 12013 transitions. Word has length 94 [2021-06-05 20:08:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:25,176 INFO L482 AbstractCegarLoop]: Abstraction has 4494 states and 12013 transitions. [2021-06-05 20:08:25,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:25,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 12013 transitions. [2021-06-05 20:08:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:25,180 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:25,180 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:25,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 20:08:25,180 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:25,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:25,181 INFO L82 PathProgramCache]: Analyzing trace with hash -217447009, now seen corresponding path program 93 times [2021-06-05 20:08:25,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:25,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679308838] [2021-06-05 20:08:25,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:25,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:25,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679308838] [2021-06-05 20:08:25,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679308838] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:25,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:25,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:25,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770873665] [2021-06-05 20:08:25,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:25,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:25,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:25,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:25,718 INFO L87 Difference]: Start difference. First operand 4494 states and 12013 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:26,555 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:08:26,706 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:26,914 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:08:27,316 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:27,520 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:08:27,741 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:08:27,969 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:08:28,317 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:08:28,501 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:08:28,665 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:08:28,839 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:08:28,984 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:29,153 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:08:29,332 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:08:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:29,342 INFO L93 Difference]: Finished difference Result 9932 states and 25161 transitions. [2021-06-05 20:08:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:08:29,342 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:29,351 INFO L225 Difference]: With dead ends: 9932 [2021-06-05 20:08:29,351 INFO L226 Difference]: Without dead ends: 9932 [2021-06-05 20:08:29,351 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3155.0ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:08:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9932 states. [2021-06-05 20:08:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9932 to 4496. [2021-06-05 20:08:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4496 states, 4494 states have (on average 2.6742323097463285) internal successors, (12018), 4495 states have internal predecessors, (12018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4496 states to 4496 states and 12018 transitions. [2021-06-05 20:08:29,434 INFO L78 Accepts]: Start accepts. Automaton has 4496 states and 12018 transitions. Word has length 94 [2021-06-05 20:08:29,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:29,434 INFO L482 AbstractCegarLoop]: Abstraction has 4496 states and 12018 transitions. [2021-06-05 20:08:29,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4496 states and 12018 transitions. [2021-06-05 20:08:29,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:29,438 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:29,438 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:29,438 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 20:08:29,438 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:29,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:29,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1551088745, now seen corresponding path program 94 times [2021-06-05 20:08:29,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:29,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634932153] [2021-06-05 20:08:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:29,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:29,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634932153] [2021-06-05 20:08:29,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634932153] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:29,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:29,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:29,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022067078] [2021-06-05 20:08:29,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:29,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:29,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:29,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:29,977 INFO L87 Difference]: Start difference. First operand 4496 states and 12018 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:30,715 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-06-05 20:08:30,992 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:08:31,140 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:31,348 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:08:31,752 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:31,942 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:32,146 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:08:32,339 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:32,589 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:08:32,974 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:08:33,150 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:08:33,326 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:08:33,509 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:08:33,669 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:33,870 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:08:34,043 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:08:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:34,050 INFO L93 Difference]: Finished difference Result 9914 states and 25123 transitions. [2021-06-05 20:08:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:08:34,051 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:34,058 INFO L225 Difference]: With dead ends: 9914 [2021-06-05 20:08:34,058 INFO L226 Difference]: Without dead ends: 9914 [2021-06-05 20:08:34,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3517.2ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:08:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9914 states. [2021-06-05 20:08:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9914 to 4494. [2021-06-05 20:08:34,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4492 states have (on average 2.6743098842386464) internal successors, (12013), 4493 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:34,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 12013 transitions. [2021-06-05 20:08:34,139 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 12013 transitions. Word has length 94 [2021-06-05 20:08:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:34,139 INFO L482 AbstractCegarLoop]: Abstraction has 4494 states and 12013 transitions. [2021-06-05 20:08:34,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:34,139 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 12013 transitions. [2021-06-05 20:08:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:34,145 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:34,145 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:34,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 20:08:34,145 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:34,145 INFO L82 PathProgramCache]: Analyzing trace with hash -2068691543, now seen corresponding path program 95 times [2021-06-05 20:08:34,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:34,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622274295] [2021-06-05 20:08:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:34,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:34,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622274295] [2021-06-05 20:08:34,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622274295] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:34,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:34,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:34,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526946049] [2021-06-05 20:08:34,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:34,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:34,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:34,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:34,769 INFO L87 Difference]: Start difference. First operand 4494 states and 12013 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:35,529 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:08:35,686 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:35,909 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:08:36,107 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:08:36,396 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:08:36,571 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:08:36,830 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:08:37,257 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:08:37,455 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:37,692 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:08:38,118 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:08:38,334 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:08:38,529 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:08:38,740 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:08:38,946 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:08:39,184 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:08:39,396 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:08:39,630 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:08:39,835 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:40,073 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:08:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:40,085 INFO L93 Difference]: Finished difference Result 11375 states and 28803 transitions. [2021-06-05 20:08:40,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 20:08:40,085 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:40,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:40,094 INFO L225 Difference]: With dead ends: 11375 [2021-06-05 20:08:40,094 INFO L226 Difference]: Without dead ends: 11375 [2021-06-05 20:08:40,095 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4771.7ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 20:08:40,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11375 states. [2021-06-05 20:08:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11375 to 4506. [2021-06-05 20:08:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 2.6751776198934283) internal successors, (12049), 4505 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12049 transitions. [2021-06-05 20:08:40,183 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12049 transitions. Word has length 94 [2021-06-05 20:08:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:40,183 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 12049 transitions. [2021-06-05 20:08:40,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12049 transitions. [2021-06-05 20:08:40,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:40,187 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:40,187 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:40,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 20:08:40,188 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:40,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:40,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1030871645, now seen corresponding path program 96 times [2021-06-05 20:08:40,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:40,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970582669] [2021-06-05 20:08:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:40,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:40,707 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970582669] [2021-06-05 20:08:40,707 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970582669] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:40,707 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:40,707 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:40,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687280748] [2021-06-05 20:08:40,707 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:40,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:40,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:40,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:40,708 INFO L87 Difference]: Start difference. First operand 4506 states and 12049 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:41,452 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:08:41,601 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:41,799 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:08:42,035 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:08:42,267 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:08:42,674 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:42,869 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:08:43,284 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:43,524 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:08:43,878 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:08:44,068 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:08:44,273 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:08:44,448 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:44,636 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:08:44,841 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:44,848 INFO L93 Difference]: Finished difference Result 10544 states and 26722 transitions. [2021-06-05 20:08:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:08:44,848 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:44,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:44,857 INFO L225 Difference]: With dead ends: 10544 [2021-06-05 20:08:44,858 INFO L226 Difference]: Without dead ends: 10544 [2021-06-05 20:08:44,858 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3724.2ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:08:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10544 states. [2021-06-05 20:08:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10544 to 4482. [2021-06-05 20:08:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.6734375) internal successors, (11977), 4481 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11977 transitions. [2021-06-05 20:08:44,948 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11977 transitions. Word has length 94 [2021-06-05 20:08:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:44,948 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11977 transitions. [2021-06-05 20:08:44,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11977 transitions. [2021-06-05 20:08:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:44,952 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:44,952 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:44,952 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 20:08:44,952 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:44,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1003813227, now seen corresponding path program 97 times [2021-06-05 20:08:44,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:44,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971582942] [2021-06-05 20:08:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:45,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:45,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971582942] [2021-06-05 20:08:45,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971582942] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:45,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:45,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:45,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007245949] [2021-06-05 20:08:45,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:45,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:45,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:45,424 INFO L87 Difference]: Start difference. First operand 4482 states and 11977 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:46,018 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-06-05 20:08:46,419 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:08:46,566 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:46,953 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:47,120 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:47,300 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:08:47,525 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:08:47,753 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:08:48,112 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:08:48,268 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:08:48,423 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:08:48,752 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:08:48,885 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:49,062 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:08:49,220 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:08:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:49,229 INFO L93 Difference]: Finished difference Result 10048 states and 25447 transitions. [2021-06-05 20:08:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:08:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:49,239 INFO L225 Difference]: With dead ends: 10048 [2021-06-05 20:08:49,239 INFO L226 Difference]: Without dead ends: 10048 [2021-06-05 20:08:49,240 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 3367.9ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:08:49,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10048 states. [2021-06-05 20:08:49,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10048 to 4488. [2021-06-05 20:08:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4486 states have (on average 2.673205528310299) internal successors, (11992), 4487 states have internal predecessors, (11992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:49,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 11992 transitions. [2021-06-05 20:08:49,327 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 11992 transitions. Word has length 94 [2021-06-05 20:08:49,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:49,327 INFO L482 AbstractCegarLoop]: Abstraction has 4488 states and 11992 transitions. [2021-06-05 20:08:49,327 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 11992 transitions. [2021-06-05 20:08:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:49,331 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:49,331 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:49,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 20:08:49,331 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:49,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:49,331 INFO L82 PathProgramCache]: Analyzing trace with hash 764722527, now seen corresponding path program 98 times [2021-06-05 20:08:49,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:49,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285987908] [2021-06-05 20:08:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:49,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:49,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285987908] [2021-06-05 20:08:49,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285987908] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:49,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:49,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:49,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050921354] [2021-06-05 20:08:49,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:49,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:49,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:49,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:49,868 INFO L87 Difference]: Start difference. First operand 4488 states and 11992 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:50,747 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:51,118 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:51,283 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:08:51,474 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:51,679 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:08:51,893 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:52,115 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:08:52,544 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:08:52,746 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:08:52,896 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:08:53,055 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:08:53,187 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:53,913 WARN L205 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:08:54,282 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:08:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:54,292 INFO L93 Difference]: Finished difference Result 10322 states and 25974 transitions. [2021-06-05 20:08:54,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:08:54,292 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:54,299 INFO L225 Difference]: With dead ends: 10322 [2021-06-05 20:08:54,300 INFO L226 Difference]: Without dead ends: 10322 [2021-06-05 20:08:54,300 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3670.2ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:08:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10322 states. [2021-06-05 20:08:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10322 to 4486. [2021-06-05 20:08:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4484 states have (on average 2.6732827832292596) internal successors, (11987), 4485 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 11987 transitions. [2021-06-05 20:08:54,376 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 11987 transitions. Word has length 94 [2021-06-05 20:08:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:54,376 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 11987 transitions. [2021-06-05 20:08:54,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 11987 transitions. [2021-06-05 20:08:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:54,380 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:54,380 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:54,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 20:08:54,380 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash 229470357, now seen corresponding path program 99 times [2021-06-05 20:08:54,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:54,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962023225] [2021-06-05 20:08:54,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:54,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:54,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962023225] [2021-06-05 20:08:54,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962023225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:54,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:54,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:54,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835094615] [2021-06-05 20:08:54,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:54,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:54,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:54,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:54,904 INFO L87 Difference]: Start difference. First operand 4486 states and 11987 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:55,753 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:08:56,111 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:56,396 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:08:56,563 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:08:56,852 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:08:57,061 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:08:57,243 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:08:57,474 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:08:57,816 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:08:57,972 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:08:58,125 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:08:58,283 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:08:58,419 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:08:58,568 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:08:58,724 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:08:58,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:08:58,730 INFO L93 Difference]: Finished difference Result 10072 states and 25500 transitions. [2021-06-05 20:08:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:08:58,731 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:08:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:08:58,739 INFO L225 Difference]: With dead ends: 10072 [2021-06-05 20:08:58,739 INFO L226 Difference]: Without dead ends: 10072 [2021-06-05 20:08:58,740 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3427.1ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:08:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2021-06-05 20:08:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 4482. [2021-06-05 20:08:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.6734375) internal successors, (11977), 4481 states have internal predecessors, (11977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11977 transitions. [2021-06-05 20:08:58,816 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11977 transitions. Word has length 94 [2021-06-05 20:08:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:08:58,816 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11977 transitions. [2021-06-05 20:08:58,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:08:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11977 transitions. [2021-06-05 20:08:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:08:58,820 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:08:58,820 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:08:58,820 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 20:08:58,820 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:08:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:08:58,820 INFO L82 PathProgramCache]: Analyzing trace with hash 2026137971, now seen corresponding path program 100 times [2021-06-05 20:08:58,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:08:58,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851406338] [2021-06-05 20:08:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:08:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:08:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:08:59,387 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:08:59,387 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851406338] [2021-06-05 20:08:59,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851406338] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:08:59,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:08:59,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:08:59,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958890815] [2021-06-05 20:08:59,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:08:59,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:08:59,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:08:59,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:08:59,387 INFO L87 Difference]: Start difference. First operand 4482 states and 11977 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:00,262 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:09:00,456 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:00,645 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:09:00,851 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:09:01,074 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:09:01,250 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:09:01,486 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:09:01,889 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:02,129 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:09:02,336 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:02,569 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:09:03,027 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:09:03,247 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:09:03,418 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:09:03,625 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:09:03,806 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:09:04,023 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:09:04,208 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:09:04,443 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:09:04,620 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:04,848 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:09:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:04,858 INFO L93 Difference]: Finished difference Result 11726 states and 29715 transitions. [2021-06-05 20:09:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:09:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:04,869 INFO L225 Difference]: With dead ends: 11726 [2021-06-05 20:09:04,869 INFO L226 Difference]: Without dead ends: 11726 [2021-06-05 20:09:04,869 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4883.4ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:09:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11726 states. [2021-06-05 20:09:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11726 to 4518. [2021-06-05 20:09:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4518 states, 4516 states have (on average 2.676040744021258) internal successors, (12085), 4517 states have internal predecessors, (12085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:04,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4518 states to 4518 states and 12085 transitions. [2021-06-05 20:09:04,961 INFO L78 Accepts]: Start accepts. Automaton has 4518 states and 12085 transitions. Word has length 94 [2021-06-05 20:09:04,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:04,961 INFO L482 AbstractCegarLoop]: Abstraction has 4518 states and 12085 transitions. [2021-06-05 20:09:04,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4518 states and 12085 transitions. [2021-06-05 20:09:04,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:04,965 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:04,965 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:04,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 20:09:04,965 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:04,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1231009427, now seen corresponding path program 101 times [2021-06-05 20:09:04,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:04,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364931678] [2021-06-05 20:09:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:05,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:05,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364931678] [2021-06-05 20:09:05,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364931678] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:05,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:05,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:05,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247135242] [2021-06-05 20:09:05,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:05,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:05,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:05,532 INFO L87 Difference]: Start difference. First operand 4518 states and 12085 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:06,429 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:09:06,604 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:06,793 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:09:06,991 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:09:07,212 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:09:07,626 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:07,806 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:08,013 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:08,196 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:08,456 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:08,845 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:09:09,045 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:09:09,224 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:09:09,414 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:09:09,595 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:09:09,793 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:09:10,009 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:10,178 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:09:10,364 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:09:10,536 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:10,719 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:10,729 INFO L93 Difference]: Finished difference Result 11995 states and 30175 transitions. [2021-06-05 20:09:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:09:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:10,739 INFO L225 Difference]: With dead ends: 11995 [2021-06-05 20:09:10,739 INFO L226 Difference]: Without dead ends: 11995 [2021-06-05 20:09:10,739 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4642.3ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:09:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11995 states. [2021-06-05 20:09:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11995 to 4506. [2021-06-05 20:09:10,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 2.6751776198934283) internal successors, (12049), 4505 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12049 transitions. [2021-06-05 20:09:10,823 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12049 transitions. Word has length 94 [2021-06-05 20:09:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:10,823 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 12049 transitions. [2021-06-05 20:09:10,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12049 transitions. [2021-06-05 20:09:10,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:10,827 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:10,827 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:10,827 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 20:09:10,827 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1098928567, now seen corresponding path program 102 times [2021-06-05 20:09:10,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:10,827 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072653765] [2021-06-05 20:09:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:11,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:11,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072653765] [2021-06-05 20:09:11,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072653765] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:11,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:11,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:11,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161750375] [2021-06-05 20:09:11,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:11,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:11,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:11,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:11,403 INFO L87 Difference]: Start difference. First operand 4506 states and 12049 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:12,307 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:09:12,486 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:12,742 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:09:13,184 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:09:13,358 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:13,559 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:13,794 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:13,969 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:14,247 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:14,628 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:09:14,799 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:09:14,978 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:09:15,136 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:09:15,304 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:09:15,483 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:15,490 INFO L93 Difference]: Finished difference Result 10822 states and 27428 transitions. [2021-06-05 20:09:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:09:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:15,499 INFO L225 Difference]: With dead ends: 10822 [2021-06-05 20:09:15,499 INFO L226 Difference]: Without dead ends: 10822 [2021-06-05 20:09:15,499 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3512.4ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:09:15,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10822 states. [2021-06-05 20:09:15,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10822 to 4458. [2021-06-05 20:09:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6716786355475763) internal successors, (11905), 4457 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11905 transitions. [2021-06-05 20:09:15,587 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11905 transitions. Word has length 94 [2021-06-05 20:09:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:15,587 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11905 transitions. [2021-06-05 20:09:15,587 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11905 transitions. [2021-06-05 20:09:15,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:15,591 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:15,591 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:15,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 20:09:15,591 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:15,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1740223437, now seen corresponding path program 103 times [2021-06-05 20:09:15,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:15,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662972387] [2021-06-05 20:09:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:16,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:16,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662972387] [2021-06-05 20:09:16,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662972387] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:16,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:16,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:16,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874163840] [2021-06-05 20:09:16,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:16,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:16,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:16,108 INFO L87 Difference]: Start difference. First operand 4458 states and 11905 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:17,164 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:09:17,322 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:09:17,500 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:17,683 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:09:17,895 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:09:18,114 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:09:18,490 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:09:18,630 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:09:18,764 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:09:18,905 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:09:19,162 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:09:19,308 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:09:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:19,317 INFO L93 Difference]: Finished difference Result 9030 states and 22918 transitions. [2021-06-05 20:09:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:09:19,318 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:19,325 INFO L225 Difference]: With dead ends: 9030 [2021-06-05 20:09:19,325 INFO L226 Difference]: Without dead ends: 9030 [2021-06-05 20:09:19,325 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2805.1ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:09:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9030 states. [2021-06-05 20:09:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9030 to 4466. [2021-06-05 20:09:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.6713709677419355) internal successors, (11925), 4465 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11925 transitions. [2021-06-05 20:09:19,398 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11925 transitions. Word has length 94 [2021-06-05 20:09:19,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:19,398 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11925 transitions. [2021-06-05 20:09:19,398 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11925 transitions. [2021-06-05 20:09:19,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:19,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:19,401 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:19,402 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 20:09:19,402 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:19,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:19,402 INFO L82 PathProgramCache]: Analyzing trace with hash 28312317, now seen corresponding path program 104 times [2021-06-05 20:09:19,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:19,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209946407] [2021-06-05 20:09:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:19,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:19,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209946407] [2021-06-05 20:09:19,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209946407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:19,883 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:19,883 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:19,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488196936] [2021-06-05 20:09:19,883 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:19,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:19,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:19,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:19,884 INFO L87 Difference]: Start difference. First operand 4466 states and 11925 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:20,293 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-05 20:09:21,021 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:09:21,228 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:09:21,400 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:21,597 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:21,802 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:21,984 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:22,200 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:22,569 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:09:22,719 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:09:22,859 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:09:23,001 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:09:23,253 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:09:23,428 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:09:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:23,438 INFO L93 Difference]: Finished difference Result 9304 states and 23445 transitions. [2021-06-05 20:09:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:09:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:23,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:23,445 INFO L225 Difference]: With dead ends: 9304 [2021-06-05 20:09:23,445 INFO L226 Difference]: Without dead ends: 9304 [2021-06-05 20:09:23,445 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 3074.9ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:09:23,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2021-06-05 20:09:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 4464. [2021-06-05 20:09:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4462 states have (on average 2.6714477812640074) internal successors, (11920), 4463 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:23,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 11920 transitions. [2021-06-05 20:09:23,517 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 11920 transitions. Word has length 94 [2021-06-05 20:09:23,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:23,517 INFO L482 AbstractCegarLoop]: Abstraction has 4464 states and 11920 transitions. [2021-06-05 20:09:23,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:23,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 11920 transitions. [2021-06-05 20:09:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:23,520 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:23,521 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:23,521 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 20:09:23,521 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:23,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:23,527 INFO L82 PathProgramCache]: Analyzing trace with hash -506939853, now seen corresponding path program 105 times [2021-06-05 20:09:23,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:23,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841884018] [2021-06-05 20:09:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:24,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:24,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841884018] [2021-06-05 20:09:24,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841884018] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:24,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:24,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:24,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711904050] [2021-06-05 20:09:24,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:24,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:24,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:24,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:24,048 INFO L87 Difference]: Start difference. First operand 4464 states and 11920 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:25,237 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:09:25,404 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:09:25,582 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:25,763 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:25,978 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:26,203 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:26,466 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:27,153 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:09:27,286 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:09:27,427 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:09:27,670 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:09:27,839 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:09:27,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:27,849 INFO L93 Difference]: Finished difference Result 9370 states and 23589 transitions. [2021-06-05 20:09:27,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:09:27,849 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:27,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:27,858 INFO L225 Difference]: With dead ends: 9370 [2021-06-05 20:09:27,858 INFO L226 Difference]: Without dead ends: 9370 [2021-06-05 20:09:27,858 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3363.2ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:09:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9370 states. [2021-06-05 20:09:27,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9370 to 4460. [2021-06-05 20:09:27,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.671601615074024) internal successors, (11910), 4459 states have internal predecessors, (11910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11910 transitions. [2021-06-05 20:09:27,938 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11910 transitions. Word has length 94 [2021-06-05 20:09:27,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:27,952 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11910 transitions. [2021-06-05 20:09:27,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11910 transitions. [2021-06-05 20:09:27,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:27,957 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:27,957 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:27,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 20:09:27,957 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:27,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:27,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1696554189, now seen corresponding path program 106 times [2021-06-05 20:09:27,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:27,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980010225] [2021-06-05 20:09:27,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:28,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:28,519 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:28,519 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980010225] [2021-06-05 20:09:28,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980010225] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:28,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:28,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:28,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490170696] [2021-06-05 20:09:28,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:28,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:28,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:28,520 INFO L87 Difference]: Start difference. First operand 4460 states and 11910 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:29,147 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2021-06-05 20:09:29,326 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:09:29,644 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:09:29,796 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:09:29,957 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:09:30,108 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:30,289 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:30,485 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:30,717 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:30,901 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:31,124 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:31,490 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:09:31,755 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:09:31,920 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:09:32,046 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:09:32,180 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:09:32,321 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:09:32,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:32,328 INFO L93 Difference]: Finished difference Result 9072 states and 23009 transitions. [2021-06-05 20:09:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:09:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:32,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:32,337 INFO L225 Difference]: With dead ends: 9072 [2021-06-05 20:09:32,337 INFO L226 Difference]: Without dead ends: 9072 [2021-06-05 20:09:32,337 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3398.1ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:09:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9072 states. [2021-06-05 20:09:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9072 to 4458. [2021-06-05 20:09:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6716786355475763) internal successors, (11905), 4457 states have internal predecessors, (11905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:32,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11905 transitions. [2021-06-05 20:09:32,438 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11905 transitions. Word has length 94 [2021-06-05 20:09:32,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:32,439 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11905 transitions. [2021-06-05 20:09:32,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11905 transitions. [2021-06-05 20:09:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:32,443 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:32,443 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:32,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 20:09:32,443 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:32,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1287215983, now seen corresponding path program 107 times [2021-06-05 20:09:32,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:32,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605169189] [2021-06-05 20:09:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:32,986 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:32,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605169189] [2021-06-05 20:09:32,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605169189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:32,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:32,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:32,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756398002] [2021-06-05 20:09:32,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:32,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:32,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:32,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:32,987 INFO L87 Difference]: Start difference. First operand 4458 states and 11905 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:33,972 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:09:34,142 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:34,287 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:09:34,531 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:09:34,726 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:09:34,981 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:09:35,170 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:09:35,403 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:09:35,802 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:35,988 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:36,248 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:09:36,447 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:36,670 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:09:37,039 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:09:37,300 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:09:37,461 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:09:37,668 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:09:37,832 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:09:38,053 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:09:38,220 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:09:38,425 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:09:38,578 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:38,782 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:09:38,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:38,791 INFO L93 Difference]: Finished difference Result 9505 states and 24221 transitions. [2021-06-05 20:09:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:09:38,792 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:38,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:38,798 INFO L225 Difference]: With dead ends: 9505 [2021-06-05 20:09:38,798 INFO L226 Difference]: Without dead ends: 9505 [2021-06-05 20:09:38,798 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 5160.3ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:09:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9505 states. [2021-06-05 20:09:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9505 to 4506. [2021-06-05 20:09:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4506 states, 4504 states have (on average 2.6751776198934283) internal successors, (12049), 4505 states have internal predecessors, (12049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:38,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4506 states to 4506 states and 12049 transitions. [2021-06-05 20:09:38,861 INFO L78 Accepts]: Start accepts. Automaton has 4506 states and 12049 transitions. Word has length 94 [2021-06-05 20:09:38,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:38,861 INFO L482 AbstractCegarLoop]: Abstraction has 4506 states and 12049 transitions. [2021-06-05 20:09:38,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 4506 states and 12049 transitions. [2021-06-05 20:09:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:38,865 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:38,865 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:38,865 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 20:09:38,865 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:38,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:38,865 INFO L82 PathProgramCache]: Analyzing trace with hash -249396085, now seen corresponding path program 108 times [2021-06-05 20:09:38,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:38,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718607246] [2021-06-05 20:09:38,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:39,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:39,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:39,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718607246] [2021-06-05 20:09:39,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718607246] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:39,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:39,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:39,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158584833] [2021-06-05 20:09:39,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:39,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:39,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:39,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:39,367 INFO L87 Difference]: Start difference. First operand 4506 states and 12049 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:40,179 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:09:40,337 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:40,475 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:09:40,645 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:09:40,826 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:09:41,025 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:09:41,413 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:41,582 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:41,763 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:41,957 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:42,133 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:42,353 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:42,736 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:09:42,906 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:09:43,051 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:09:43,228 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:09:43,383 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:09:43,569 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:09:43,736 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:43,879 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:09:44,069 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:09:44,217 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:44,389 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:44,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:44,399 INFO L93 Difference]: Finished difference Result 9774 states and 24681 transitions. [2021-06-05 20:09:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:09:44,399 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:44,405 INFO L225 Difference]: With dead ends: 9774 [2021-06-05 20:09:44,406 INFO L226 Difference]: Without dead ends: 9774 [2021-06-05 20:09:44,406 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4476.0ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:09:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9774 states. [2021-06-05 20:09:44,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9774 to 4494. [2021-06-05 20:09:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4492 states have (on average 2.6743098842386464) internal successors, (12013), 4493 states have internal predecessors, (12013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 12013 transitions. [2021-06-05 20:09:44,479 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 12013 transitions. Word has length 94 [2021-06-05 20:09:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:44,479 INFO L482 AbstractCegarLoop]: Abstraction has 4494 states and 12013 transitions. [2021-06-05 20:09:44,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 12013 transitions. [2021-06-05 20:09:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:44,483 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:44,483 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:44,483 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 20:09:44,483 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:44,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:44,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2080541909, now seen corresponding path program 109 times [2021-06-05 20:09:44,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:44,484 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994485574] [2021-06-05 20:09:44,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:45,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:45,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:45,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994485574] [2021-06-05 20:09:45,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994485574] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:45,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:45,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:45,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931907146] [2021-06-05 20:09:45,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:45,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:45,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:45,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:45,024 INFO L87 Difference]: Start difference. First operand 4494 states and 12013 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:45,825 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:09:45,981 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:46,115 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:09:46,285 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:09:46,733 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:09:46,873 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:47,040 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:47,225 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:47,437 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:47,612 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:47,829 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:48,197 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:09:48,353 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:09:48,500 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:09:48,663 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:09:48,818 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:09:48,987 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:09:49,138 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:09:49,282 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:09:49,448 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:09:49,614 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:49,769 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:49,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:49,778 INFO L93 Difference]: Finished difference Result 9818 states and 24779 transitions. [2021-06-05 20:09:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 20:09:49,779 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:49,786 INFO L225 Difference]: With dead ends: 9818 [2021-06-05 20:09:49,786 INFO L226 Difference]: Without dead ends: 9818 [2021-06-05 20:09:49,786 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4250.1ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 20:09:49,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2021-06-05 20:09:49,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 4470. [2021-06-05 20:09:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 4468 states have (on average 2.6725604297224708) internal successors, (11941), 4469 states have internal predecessors, (11941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 11941 transitions. [2021-06-05 20:09:49,852 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 11941 transitions. Word has length 94 [2021-06-05 20:09:49,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:49,852 INFO L482 AbstractCegarLoop]: Abstraction has 4470 states and 11941 transitions. [2021-06-05 20:09:49,852 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 11941 transitions. [2021-06-05 20:09:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:49,856 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:49,856 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:49,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 20:09:49,856 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash -21423241, now seen corresponding path program 110 times [2021-06-05 20:09:49,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:49,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024544156] [2021-06-05 20:09:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:50,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:50,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:50,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024544156] [2021-06-05 20:09:50,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024544156] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:50,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:50,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:50,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772683749] [2021-06-05 20:09:50,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:50,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:50,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:50,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:50,366 INFO L87 Difference]: Start difference. First operand 4470 states and 11941 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:51,202 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:09:51,360 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:09:51,700 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:09:51,851 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:09:52,016 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:52,201 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:09:52,374 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:09:52,569 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:09:52,740 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:09:52,945 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:09:53,262 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:09:53,407 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:09:53,559 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:09:53,692 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:09:53,848 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:09:53,997 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:09:54,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:54,003 INFO L93 Difference]: Finished difference Result 8422 states and 21447 transitions. [2021-06-05 20:09:54,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:09:54,004 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:54,010 INFO L225 Difference]: With dead ends: 8422 [2021-06-05 20:09:54,010 INFO L226 Difference]: Without dead ends: 8422 [2021-06-05 20:09:54,010 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3271.5ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:09:54,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8422 states. [2021-06-05 20:09:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8422 to 4446. [2021-06-05 20:09:54,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4444 states have (on average 2.6707920792079207) internal successors, (11869), 4445 states have internal predecessors, (11869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 11869 transitions. [2021-06-05 20:09:54,074 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 11869 transitions. Word has length 94 [2021-06-05 20:09:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:54,075 INFO L482 AbstractCegarLoop]: Abstraction has 4446 states and 11869 transitions. [2021-06-05 20:09:54,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:54,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 11869 transitions. [2021-06-05 20:09:54,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:54,078 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:54,078 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:54,078 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 20:09:54,079 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:54,079 INFO L82 PathProgramCache]: Analyzing trace with hash -508184993, now seen corresponding path program 111 times [2021-06-05 20:09:54,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:54,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946127281] [2021-06-05 20:09:54,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:54,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:54,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946127281] [2021-06-05 20:09:54,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946127281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:54,524 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:54,524 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:54,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633534216] [2021-06-05 20:09:54,524 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:54,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:54,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:54,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:54,525 INFO L87 Difference]: Start difference. First operand 4446 states and 11869 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:55,690 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:09:55,879 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:09:56,076 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:09:56,279 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:09:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:09:57,105 INFO L93 Difference]: Finished difference Result 7068 states and 18066 transitions. [2021-06-05 20:09:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:09:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:09:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:09:57,112 INFO L225 Difference]: With dead ends: 7068 [2021-06-05 20:09:57,112 INFO L226 Difference]: Without dead ends: 7068 [2021-06-05 20:09:57,112 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2296.8ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:09:57,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7068 states. [2021-06-05 20:09:57,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7068 to 4466. [2021-06-05 20:09:57,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.67002688172043) internal successors, (11919), 4465 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11919 transitions. [2021-06-05 20:09:57,174 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11919 transitions. Word has length 94 [2021-06-05 20:09:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:09:57,174 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11919 transitions. [2021-06-05 20:09:57,174 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11919 transitions. [2021-06-05 20:09:57,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:09:57,178 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:09:57,178 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:09:57,178 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 20:09:57,178 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:09:57,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:09:57,178 INFO L82 PathProgramCache]: Analyzing trace with hash -567853577, now seen corresponding path program 112 times [2021-06-05 20:09:57,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:09:57,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475524483] [2021-06-05 20:09:57,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:09:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:09:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:09:57,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:09:57,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475524483] [2021-06-05 20:09:57,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475524483] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:09:57,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:09:57,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:09:57,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813904725] [2021-06-05 20:09:57,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:09:57,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:09:57,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:09:57,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:09:57,653 INFO L87 Difference]: Start difference. First operand 4466 states and 11919 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:09:58,817 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:09:58,985 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:09:59,202 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:09:59,407 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:10:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:00,268 INFO L93 Difference]: Finished difference Result 7546 states and 19002 transitions. [2021-06-05 20:10:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:10:00,268 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:00,275 INFO L225 Difference]: With dead ends: 7546 [2021-06-05 20:10:00,275 INFO L226 Difference]: Without dead ends: 7546 [2021-06-05 20:10:00,276 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2346.9ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:10:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7546 states. [2021-06-05 20:10:00,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7546 to 4468. [2021-06-05 20:10:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4466 states have (on average 2.6699507389162562) internal successors, (11924), 4467 states have internal predecessors, (11924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 11924 transitions. [2021-06-05 20:10:00,351 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 11924 transitions. Word has length 94 [2021-06-05 20:10:00,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:00,351 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 11924 transitions. [2021-06-05 20:10:00,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 11924 transitions. [2021-06-05 20:10:00,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:00,355 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:00,355 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:00,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 20:10:00,355 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:00,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:00,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1113160169, now seen corresponding path program 113 times [2021-06-05 20:10:00,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:00,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338863314] [2021-06-05 20:10:00,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:00,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:00,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338863314] [2021-06-05 20:10:00,819 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338863314] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:00,819 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:00,819 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:00,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690694621] [2021-06-05 20:10:00,819 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:00,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:00,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:00,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:00,819 INFO L87 Difference]: Start difference. First operand 4468 states and 11924 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:01,825 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:10:02,031 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:10:02,217 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:10:02,409 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:10:02,578 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:10:02,780 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:03,756 INFO L93 Difference]: Finished difference Result 7344 states and 18598 transitions. [2021-06-05 20:10:03,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:10:03,756 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:03,761 INFO L225 Difference]: With dead ends: 7344 [2021-06-05 20:10:03,761 INFO L226 Difference]: Without dead ends: 7344 [2021-06-05 20:10:03,761 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2549.1ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:10:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7344 states. [2021-06-05 20:10:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7344 to 4462. [2021-06-05 20:10:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.6701793721973095) internal successors, (11909), 4461 states have internal predecessors, (11909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11909 transitions. [2021-06-05 20:10:03,821 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11909 transitions. Word has length 94 [2021-06-05 20:10:03,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:03,822 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11909 transitions. [2021-06-05 20:10:03,822 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11909 transitions. [2021-06-05 20:10:03,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:03,826 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:03,826 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:03,826 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 20:10:03,826 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:03,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:03,826 INFO L82 PathProgramCache]: Analyzing trace with hash -320285473, now seen corresponding path program 114 times [2021-06-05 20:10:03,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:03,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167137425] [2021-06-05 20:10:03,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:04,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:04,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167137425] [2021-06-05 20:10:04,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167137425] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:04,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:04,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:04,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893335103] [2021-06-05 20:10:04,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:04,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:04,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:04,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:04,324 INFO L87 Difference]: Start difference. First operand 4462 states and 11909 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:05,240 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-06-05 20:10:05,526 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:05,710 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:10:05,884 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:10:06,108 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:10:06,331 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:10:07,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:07,318 INFO L93 Difference]: Finished difference Result 7618 states and 19161 transitions. [2021-06-05 20:10:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:10:07,319 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:07,324 INFO L225 Difference]: With dead ends: 7618 [2021-06-05 20:10:07,324 INFO L226 Difference]: Without dead ends: 7618 [2021-06-05 20:10:07,325 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2618.1ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:10:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2021-06-05 20:10:07,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 4468. [2021-06-05 20:10:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4466 states have (on average 2.6699507389162562) internal successors, (11924), 4467 states have internal predecessors, (11924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 11924 transitions. [2021-06-05 20:10:07,396 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 11924 transitions. Word has length 94 [2021-06-05 20:10:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:07,396 INFO L482 AbstractCegarLoop]: Abstraction has 4468 states and 11924 transitions. [2021-06-05 20:10:07,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 11924 transitions. [2021-06-05 20:10:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:07,401 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:07,401 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:07,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-06-05 20:10:07,401 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:07,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1360728273, now seen corresponding path program 115 times [2021-06-05 20:10:07,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:07,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215299104] [2021-06-05 20:10:07,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:07,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:07,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215299104] [2021-06-05 20:10:07,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215299104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:07,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:07,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:07,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086099093] [2021-06-05 20:10:07,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:07,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:07,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:07,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:07,994 INFO L87 Difference]: Start difference. First operand 4468 states and 11924 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:09,077 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:09,281 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:10:09,470 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:09,692 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:09,905 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:10,145 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:11,066 INFO L93 Difference]: Finished difference Result 7892 states and 19688 transitions. [2021-06-05 20:10:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:10:11,067 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:11,073 INFO L225 Difference]: With dead ends: 7892 [2021-06-05 20:10:11,073 INFO L226 Difference]: Without dead ends: 7892 [2021-06-05 20:10:11,073 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2757.1ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:10:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7892 states. [2021-06-05 20:10:11,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7892 to 4466. [2021-06-05 20:10:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.67002688172043) internal successors, (11919), 4465 states have internal predecessors, (11919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11919 transitions. [2021-06-05 20:10:11,140 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11919 transitions. Word has length 94 [2021-06-05 20:10:11,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:11,140 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11919 transitions. [2021-06-05 20:10:11,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:11,140 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11919 transitions. [2021-06-05 20:10:11,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:11,143 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:11,143 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:11,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-06-05 20:10:11,144 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1843945701, now seen corresponding path program 116 times [2021-06-05 20:10:11,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:11,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884390090] [2021-06-05 20:10:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:11,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:11,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:11,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884390090] [2021-06-05 20:10:11,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884390090] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:11,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:11,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:11,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113168181] [2021-06-05 20:10:11,677 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:11,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:11,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:11,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:11,678 INFO L87 Difference]: Start difference. First operand 4466 states and 11919 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:12,760 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:12,923 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:10:13,111 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:10:13,292 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:13,510 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:13,684 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:13,928 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:14,794 INFO L93 Difference]: Finished difference Result 7414 states and 18752 transitions. [2021-06-05 20:10:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:10:14,795 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:14,802 INFO L225 Difference]: With dead ends: 7414 [2021-06-05 20:10:14,802 INFO L226 Difference]: Without dead ends: 7414 [2021-06-05 20:10:14,802 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2828.0ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:10:14,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7414 states. [2021-06-05 20:10:14,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7414 to 4454. [2021-06-05 20:10:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-06-05 20:10:14,870 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-06-05 20:10:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:14,870 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-06-05 20:10:14,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-06-05 20:10:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:14,874 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:14,874 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:14,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-06-05 20:10:14,874 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:14,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:14,874 INFO L82 PathProgramCache]: Analyzing trace with hash -304114657, now seen corresponding path program 117 times [2021-06-05 20:10:14,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:14,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602370] [2021-06-05 20:10:14,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:15,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:15,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602370] [2021-06-05 20:10:15,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602370] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:15,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:15,364 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:15,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083970388] [2021-06-05 20:10:15,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:15,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:15,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:15,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:15,364 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:16,532 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:16,727 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:10:16,914 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:10:17,136 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:10:17,370 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:10:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:18,344 INFO L93 Difference]: Finished difference Result 7690 states and 19320 transitions. [2021-06-05 20:10:18,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:10:18,345 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:18,351 INFO L225 Difference]: With dead ends: 7690 [2021-06-05 20:10:18,351 INFO L226 Difference]: Without dead ends: 7690 [2021-06-05 20:10:18,351 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2552.7ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:10:18,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7690 states. [2021-06-05 20:10:18,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7690 to 4462. [2021-06-05 20:10:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.6701793721973095) internal successors, (11909), 4461 states have internal predecessors, (11909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11909 transitions. [2021-06-05 20:10:18,418 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11909 transitions. Word has length 94 [2021-06-05 20:10:18,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:18,419 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11909 transitions. [2021-06-05 20:10:18,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:18,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11909 transitions. [2021-06-05 20:10:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:18,423 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:18,423 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:18,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-06-05 20:10:18,423 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:18,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:18,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1376899089, now seen corresponding path program 118 times [2021-06-05 20:10:18,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:18,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501326501] [2021-06-05 20:10:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:18,927 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:18,927 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501326501] [2021-06-05 20:10:18,927 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501326501] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:18,927 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:18,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:18,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014278308] [2021-06-05 20:10:18,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:18,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:18,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:18,928 INFO L87 Difference]: Start difference. First operand 4462 states and 11909 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:19,976 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:20,175 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:10:20,363 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:20,561 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:20,748 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:20,970 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:22,014 INFO L93 Difference]: Finished difference Result 7964 states and 19847 transitions. [2021-06-05 20:10:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:10:22,014 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:22,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:22,021 INFO L225 Difference]: With dead ends: 7964 [2021-06-05 20:10:22,021 INFO L226 Difference]: Without dead ends: 7964 [2021-06-05 20:10:22,021 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2722.9ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:10:22,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7964 states. [2021-06-05 20:10:22,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7964 to 4460. [2021-06-05 20:10:22,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:22,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-06-05 20:10:22,087 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-06-05 20:10:22,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:22,087 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-06-05 20:10:22,087 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:22,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-06-05 20:10:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:22,091 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:22,091 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:22,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-06-05 20:10:22,092 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1827774885, now seen corresponding path program 119 times [2021-06-05 20:10:22,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:22,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424708467] [2021-06-05 20:10:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:22,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:22,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424708467] [2021-06-05 20:10:22,667 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424708467] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:22,667 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:22,667 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:22,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992740129] [2021-06-05 20:10:22,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:22,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:22,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:22,668 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:23,735 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:23,992 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:10:24,183 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:10:24,374 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:24,589 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:24,770 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:25,026 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:25,949 INFO L93 Difference]: Finished difference Result 8030 states and 19991 transitions. [2021-06-05 20:10:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:10:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:25,956 INFO L225 Difference]: With dead ends: 8030 [2021-06-05 20:10:25,957 INFO L226 Difference]: Without dead ends: 8030 [2021-06-05 20:10:25,957 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2934.3ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:10:25,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8030 states. [2021-06-05 20:10:26,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8030 to 4456. [2021-06-05 20:10:26,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 4454 states have (on average 2.670408621463853) internal successors, (11894), 4455 states have internal predecessors, (11894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 11894 transitions. [2021-06-05 20:10:26,027 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 11894 transitions. Word has length 94 [2021-06-05 20:10:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:26,027 INFO L482 AbstractCegarLoop]: Abstraction has 4456 states and 11894 transitions. [2021-06-05 20:10:26,027 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 11894 transitions. [2021-06-05 20:10:26,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:26,031 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:26,031 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:26,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-06-05 20:10:26,035 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:26,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:26,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1619052793, now seen corresponding path program 120 times [2021-06-05 20:10:26,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:26,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418569393] [2021-06-05 20:10:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:26,613 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:26,613 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418569393] [2021-06-05 20:10:26,613 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418569393] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:26,613 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:26,613 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:26,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585025855] [2021-06-05 20:10:26,613 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:26,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:26,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:26,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:26,614 INFO L87 Difference]: Start difference. First operand 4456 states and 11894 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:27,649 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:10:27,816 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:10:28,000 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:10:28,175 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:10:28,368 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:10:28,590 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:28,863 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:29,049 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:29,285 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:30,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:30,273 INFO L93 Difference]: Finished difference Result 7482 states and 18901 transitions. [2021-06-05 20:10:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:10:30,273 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:30,279 INFO L225 Difference]: With dead ends: 7482 [2021-06-05 20:10:30,279 INFO L226 Difference]: Without dead ends: 7482 [2021-06-05 20:10:30,280 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3212.5ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:10:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7482 states. [2021-06-05 20:10:30,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7482 to 4450. [2021-06-05 20:10:30,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4448 states have (on average 2.670638489208633) internal successors, (11879), 4449 states have internal predecessors, (11879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:30,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 11879 transitions. [2021-06-05 20:10:30,357 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 11879 transitions. Word has length 94 [2021-06-05 20:10:30,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:30,358 INFO L482 AbstractCegarLoop]: Abstraction has 4450 states and 11879 transitions. [2021-06-05 20:10:30,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:30,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 11879 transitions. [2021-06-05 20:10:30,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:30,362 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:30,362 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:30,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-06-05 20:10:30,362 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:30,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:30,362 INFO L82 PathProgramCache]: Analyzing trace with hash -619004041, now seen corresponding path program 121 times [2021-06-05 20:10:30,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:30,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850088343] [2021-06-05 20:10:30,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:30,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:30,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:30,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850088343] [2021-06-05 20:10:30,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850088343] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:30,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:30,918 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:30,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934190648] [2021-06-05 20:10:30,918 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:30,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:30,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:30,919 INFO L87 Difference]: Start difference. First operand 4450 states and 11879 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:31,772 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-06-05 20:10:32,080 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:32,279 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:10:32,469 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:10:32,719 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:10:32,949 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:10:33,285 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-06-05 20:10:33,580 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-06-05 20:10:34,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:34,037 INFO L93 Difference]: Finished difference Result 7122 states and 18080 transitions. [2021-06-05 20:10:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:10:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:34,043 INFO L225 Difference]: With dead ends: 7122 [2021-06-05 20:10:34,043 INFO L226 Difference]: Without dead ends: 7122 [2021-06-05 20:10:34,044 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2806.0ms TimeCoverageRelationStatistics Valid=479, Invalid=1591, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:10:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7122 states. [2021-06-05 20:10:34,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7122 to 4460. [2021-06-05 20:10:34,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4458 states have (on average 2.6702557200538357) internal successors, (11904), 4459 states have internal predecessors, (11904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 11904 transitions. [2021-06-05 20:10:34,109 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 11904 transitions. Word has length 94 [2021-06-05 20:10:34,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:34,109 INFO L482 AbstractCegarLoop]: Abstraction has 4460 states and 11904 transitions. [2021-06-05 20:10:34,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:34,109 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 11904 transitions. [2021-06-05 20:10:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:34,113 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:34,113 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:34,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-06-05 20:10:34,113 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:34,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1062009705, now seen corresponding path program 122 times [2021-06-05 20:10:34,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:34,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764542665] [2021-06-05 20:10:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:34,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:34,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764542665] [2021-06-05 20:10:34,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764542665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:34,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:34,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:34,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057516234] [2021-06-05 20:10:34,633 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:34,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:34,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:34,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:34,634 INFO L87 Difference]: Start difference. First operand 4460 states and 11904 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:35,695 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:10:35,860 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:36,060 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:10:36,299 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:36,515 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:36,697 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:36,924 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:37,597 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-06-05 20:10:37,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:37,938 INFO L93 Difference]: Finished difference Result 7396 states and 18607 transitions. [2021-06-05 20:10:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:10:37,939 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:37,944 INFO L225 Difference]: With dead ends: 7396 [2021-06-05 20:10:37,944 INFO L226 Difference]: Without dead ends: 7396 [2021-06-05 20:10:37,945 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2830.6ms TimeCoverageRelationStatistics Valid=512, Invalid=1650, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:10:37,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7396 states. [2021-06-05 20:10:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7396 to 4458. [2021-06-05 20:10:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4456 states have (on average 2.6703321364452424) internal successors, (11899), 4457 states have internal predecessors, (11899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 11899 transitions. [2021-06-05 20:10:38,012 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 11899 transitions. Word has length 94 [2021-06-05 20:10:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:38,012 INFO L482 AbstractCegarLoop]: Abstraction has 4458 states and 11899 transitions. [2021-06-05 20:10:38,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:38,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 11899 transitions. [2021-06-05 20:10:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:38,016 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:38,016 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:38,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-06-05 20:10:38,016 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:38,017 INFO L82 PathProgramCache]: Analyzing trace with hash -2142664269, now seen corresponding path program 123 times [2021-06-05 20:10:38,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:38,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595383652] [2021-06-05 20:10:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:38,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:38,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595383652] [2021-06-05 20:10:38,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595383652] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:38,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:38,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:38,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24560716] [2021-06-05 20:10:38,602 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:38,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:38,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:38,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:38,602 INFO L87 Difference]: Start difference. First operand 4458 states and 11899 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:39,697 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:10:39,848 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:10:40,026 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:10:40,215 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:10:40,405 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:40,622 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:40,811 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:41,038 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:42,026 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-06-05 20:10:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:42,033 INFO L93 Difference]: Finished difference Result 7462 states and 18751 transitions. [2021-06-05 20:10:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:10:42,033 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:42,040 INFO L225 Difference]: With dead ends: 7462 [2021-06-05 20:10:42,041 INFO L226 Difference]: Without dead ends: 7462 [2021-06-05 20:10:42,041 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 3030.8ms TimeCoverageRelationStatistics Valid=544, Invalid=1712, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:10:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7462 states. [2021-06-05 20:10:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7462 to 4454. [2021-06-05 20:10:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4452 states have (on average 2.670485175202156) internal successors, (11889), 4453 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 11889 transitions. [2021-06-05 20:10:42,114 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 11889 transitions. Word has length 94 [2021-06-05 20:10:42,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:42,115 INFO L482 AbstractCegarLoop]: Abstraction has 4454 states and 11889 transitions. [2021-06-05 20:10:42,115 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:42,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 11889 transitions. [2021-06-05 20:10:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:42,119 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:42,119 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:42,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-06-05 20:10:42,119 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:42,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1304163409, now seen corresponding path program 124 times [2021-06-05 20:10:42,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:42,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852736252] [2021-06-05 20:10:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:42,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:42,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:42,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852736252] [2021-06-05 20:10:42,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852736252] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:42,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:42,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:42,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082906816] [2021-06-05 20:10:42,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:42,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:42,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:42,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:42,686 INFO L87 Difference]: Start difference. First operand 4454 states and 11889 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:43,813 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:10:43,985 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:10:44,136 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:10:44,323 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:10:44,524 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:44,745 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:44,940 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:45,171 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:45,503 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-06-05 20:10:45,847 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2021-06-05 20:10:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:46,170 INFO L93 Difference]: Finished difference Result 7528 states and 18895 transitions. [2021-06-05 20:10:46,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:10:46,171 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:46,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:46,176 INFO L225 Difference]: With dead ends: 7528 [2021-06-05 20:10:46,176 INFO L226 Difference]: Without dead ends: 7528 [2021-06-05 20:10:46,177 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3148.7ms TimeCoverageRelationStatistics Valid=575, Invalid=1777, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:10:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7528 states. [2021-06-05 20:10:46,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7528 to 4452. [2021-06-05 20:10:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4452 states, 4450 states have (on average 2.670561797752809) internal successors, (11884), 4451 states have internal predecessors, (11884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4452 states to 4452 states and 11884 transitions. [2021-06-05 20:10:46,244 INFO L78 Accepts]: Start accepts. Automaton has 4452 states and 11884 transitions. Word has length 94 [2021-06-05 20:10:46,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:46,244 INFO L482 AbstractCegarLoop]: Abstraction has 4452 states and 11884 transitions. [2021-06-05 20:10:46,244 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4452 states and 11884 transitions. [2021-06-05 20:10:46,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:46,248 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:46,248 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:46,248 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-06-05 20:10:46,248 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:46,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1125859795, now seen corresponding path program 125 times [2021-06-05 20:10:46,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:46,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890614895] [2021-06-05 20:10:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:46,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:46,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:46,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890614895] [2021-06-05 20:10:46,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890614895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:46,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:46,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:46,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621143516] [2021-06-05 20:10:46,785 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:46,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:46,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:46,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:46,785 INFO L87 Difference]: Start difference. First operand 4452 states and 11884 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:47,797 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-06-05 20:10:47,941 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:10:48,140 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:10:48,294 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:10:48,479 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:10:48,726 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:10:48,946 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:10:49,170 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:49,398 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:10:49,593 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:49,828 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:10:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:50,800 INFO L93 Difference]: Finished difference Result 6912 states and 17656 transitions. [2021-06-05 20:10:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 20:10:50,800 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:50,806 INFO L225 Difference]: With dead ends: 6912 [2021-06-05 20:10:50,806 INFO L226 Difference]: Without dead ends: 6912 [2021-06-05 20:10:50,806 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3483.5ms TimeCoverageRelationStatistics Valid=605, Invalid=1845, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 20:10:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2021-06-05 20:10:50,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 4450. [2021-06-05 20:10:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4448 states have (on average 2.670638489208633) internal successors, (11879), 4449 states have internal predecessors, (11879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:50,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 11879 transitions. [2021-06-05 20:10:50,869 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 11879 transitions. Word has length 94 [2021-06-05 20:10:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:50,870 INFO L482 AbstractCegarLoop]: Abstraction has 4450 states and 11879 transitions. [2021-06-05 20:10:50,870 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:50,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 11879 transitions. [2021-06-05 20:10:50,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:50,874 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:50,874 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:50,874 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-06-05 20:10:50,874 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:50,874 INFO L82 PathProgramCache]: Analyzing trace with hash 420338423, now seen corresponding path program 126 times [2021-06-05 20:10:50,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:50,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536618367] [2021-06-05 20:10:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:51,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:51,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:51,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536618367] [2021-06-05 20:10:51,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536618367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:51,403 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:51,403 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:51,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010831010] [2021-06-05 20:10:51,403 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:51,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:51,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:51,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:51,404 INFO L87 Difference]: Start difference. First operand 4450 states and 11879 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:52,162 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:10:52,312 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:10:52,508 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:10:52,693 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:10:53,078 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:10:53,280 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:10:53,511 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:10:53,860 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:10:54,052 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:10:54,234 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:10:54,448 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:10:54,617 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:10:54,827 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:10:55,016 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:10:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:55,023 INFO L93 Difference]: Finished difference Result 8672 states and 22142 transitions. [2021-06-05 20:10:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:10:55,023 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:55,030 INFO L225 Difference]: With dead ends: 8672 [2021-06-05 20:10:55,030 INFO L226 Difference]: Without dead ends: 8672 [2021-06-05 20:10:55,030 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3275.1ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:10:55,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8672 states. [2021-06-05 20:10:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8672 to 4546. [2021-06-05 20:10:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4546 states, 4544 states have (on average 2.6775968309859155) internal successors, (12167), 4545 states have internal predecessors, (12167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:55,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4546 states to 4546 states and 12167 transitions. [2021-06-05 20:10:55,103 INFO L78 Accepts]: Start accepts. Automaton has 4546 states and 12167 transitions. Word has length 94 [2021-06-05 20:10:55,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:55,103 INFO L482 AbstractCegarLoop]: Abstraction has 4546 states and 12167 transitions. [2021-06-05 20:10:55,103 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:55,103 INFO L276 IsEmpty]: Start isEmpty. Operand 4546 states and 12167 transitions. [2021-06-05 20:10:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:55,107 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:55,107 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:55,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-06-05 20:10:55,108 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:55,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:55,108 INFO L82 PathProgramCache]: Analyzing trace with hash 130233045, now seen corresponding path program 127 times [2021-06-05 20:10:55,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:55,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004544539] [2021-06-05 20:10:55,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:55,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:55,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004544539] [2021-06-05 20:10:55,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004544539] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:55,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:55,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:55,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297920364] [2021-06-05 20:10:55,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:55,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:55,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:55,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:55,661 INFO L87 Difference]: Start difference. First operand 4546 states and 12167 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:56,511 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:10:56,713 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:10:56,895 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:10:57,096 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:10:57,315 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:10:57,733 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:10:57,942 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:10:58,245 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:10:58,445 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:10:58,660 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:10:58,852 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:10:59,044 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:10:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:10:59,050 INFO L93 Difference]: Finished difference Result 9346 states and 23938 transitions. [2021-06-05 20:10:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:10:59,051 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:10:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:10:59,058 INFO L225 Difference]: With dead ends: 9346 [2021-06-05 20:10:59,058 INFO L226 Difference]: Without dead ends: 9346 [2021-06-05 20:10:59,058 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3100.2ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:10:59,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2021-06-05 20:10:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 4510. [2021-06-05 20:10:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-06-05 20:10:59,134 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-06-05 20:10:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:10:59,134 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-06-05 20:10:59,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:10:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-06-05 20:10:59,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:10:59,138 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:10:59,139 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:10:59,139 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-06-05 20:10:59,139 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:10:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:10:59,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1766983107, now seen corresponding path program 128 times [2021-06-05 20:10:59,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:10:59,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75670430] [2021-06-05 20:10:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:10:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:10:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:10:59,619 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:10:59,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75670430] [2021-06-05 20:10:59,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75670430] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:10:59,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:10:59,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:10:59,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858606958] [2021-06-05 20:10:59,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:10:59,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:10:59,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:10:59,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:10:59,620 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:00,490 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:11:00,674 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:11:01,021 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:01,179 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:11:01,375 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:11:01,578 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:11:01,889 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:11:02,072 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:11:02,227 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:11:02,395 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:11:02,535 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:02,693 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:02,858 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:11:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:02,868 INFO L93 Difference]: Finished difference Result 9120 states and 23141 transitions. [2021-06-05 20:11:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:11:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:02,876 INFO L225 Difference]: With dead ends: 9120 [2021-06-05 20:11:02,876 INFO L226 Difference]: Without dead ends: 9120 [2021-06-05 20:11:02,877 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2861.2ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:11:02,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2021-06-05 20:11:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 4512. [2021-06-05 20:11:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4512 states, 4510 states have (on average 2.6749445676274943) internal successors, (12064), 4511 states have internal predecessors, (12064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4512 states to 4512 states and 12064 transitions. [2021-06-05 20:11:02,953 INFO L78 Accepts]: Start accepts. Automaton has 4512 states and 12064 transitions. Word has length 94 [2021-06-05 20:11:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:02,953 INFO L482 AbstractCegarLoop]: Abstraction has 4512 states and 12064 transitions. [2021-06-05 20:11:02,953 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:02,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4512 states and 12064 transitions. [2021-06-05 20:11:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:02,956 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:02,956 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:02,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-06-05 20:11:02,956 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1552647, now seen corresponding path program 129 times [2021-06-05 20:11:02,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:02,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144315036] [2021-06-05 20:11:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:03,432 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:03,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144315036] [2021-06-05 20:11:03,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144315036] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:03,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:03,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:03,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779450621] [2021-06-05 20:11:03,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:03,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:03,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:03,432 INFO L87 Difference]: Start difference. First operand 4512 states and 12064 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:04,254 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:11:04,439 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:11:04,765 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:04,932 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:05,117 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:05,284 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:05,483 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:05,801 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:11:05,952 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:11:06,120 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:11:06,281 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:11:06,421 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:06,576 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:06,731 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:11:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:06,737 INFO L93 Difference]: Finished difference Result 9102 states and 23103 transitions. [2021-06-05 20:11:06,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:11:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:06,743 INFO L225 Difference]: With dead ends: 9102 [2021-06-05 20:11:06,743 INFO L226 Difference]: Without dead ends: 9102 [2021-06-05 20:11:06,744 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2986.2ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:11:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2021-06-05 20:11:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 4510. [2021-06-05 20:11:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-06-05 20:11:06,810 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-06-05 20:11:06,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:06,810 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-06-05 20:11:06,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-06-05 20:11:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:06,814 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:06,814 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:06,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-06-05 20:11:06,814 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash 676739655, now seen corresponding path program 130 times [2021-06-05 20:11:06,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:06,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097961915] [2021-06-05 20:11:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:07,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:07,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:07,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097961915] [2021-06-05 20:11:07,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097961915] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:07,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:07,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:07,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003954391] [2021-06-05 20:11:07,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:07,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:07,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:07,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:07,316 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:08,318 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:11:08,504 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:11:08,717 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:11:08,879 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:11:09,088 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:11:09,484 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:11:09,656 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:09,853 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:11:10,195 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:11:10,380 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:11:10,553 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:11:10,744 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:11:10,925 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:11:11,122 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:11:11,305 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:11:11,513 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:11:11,689 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:11,887 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:11:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:11,897 INFO L93 Difference]: Finished difference Result 10563 states and 26783 transitions. [2021-06-05 20:11:11,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 20:11:11,897 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:11,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:11,904 INFO L225 Difference]: With dead ends: 10563 [2021-06-05 20:11:11,904 INFO L226 Difference]: Without dead ends: 10563 [2021-06-05 20:11:11,905 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 4152.5ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 20:11:11,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10563 states. [2021-06-05 20:11:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10563 to 4522. [2021-06-05 20:11:11,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-06-05 20:11:11,981 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-06-05 20:11:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:11,981 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-06-05 20:11:11,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-06-05 20:11:11,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:11,985 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:11,985 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:11,985 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-06-05 20:11:11,985 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:11,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1714559553, now seen corresponding path program 131 times [2021-06-05 20:11:11,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:11,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387765274] [2021-06-05 20:11:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:12,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:12,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387765274] [2021-06-05 20:11:12,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387765274] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:12,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:12,457 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:12,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468300774] [2021-06-05 20:11:12,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:12,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:12,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:12,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:12,457 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:13,443 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:11:13,627 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:11:13,823 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:11:14,214 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:14,395 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:14,570 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:14,774 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:15,113 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:11:15,287 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:11:15,470 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:11:15,631 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:15,807 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:11:15,984 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:15,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:15,991 INFO L93 Difference]: Finished difference Result 9732 states and 24702 transitions. [2021-06-05 20:11:15,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:11:15,991 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:15,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:15,999 INFO L225 Difference]: With dead ends: 9732 [2021-06-05 20:11:15,999 INFO L226 Difference]: Without dead ends: 9732 [2021-06-05 20:11:15,999 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3102.9ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:11:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2021-06-05 20:11:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 4498. [2021-06-05 20:11:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4496 states have (on average 2.674154804270463) internal successors, (12023), 4497 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:16,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 12023 transitions. [2021-06-05 20:11:16,075 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 12023 transitions. Word has length 94 [2021-06-05 20:11:16,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:16,075 INFO L482 AbstractCegarLoop]: Abstraction has 4498 states and 12023 transitions. [2021-06-05 20:11:16,075 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:16,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 12023 transitions. [2021-06-05 20:11:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:16,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:16,079 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:16,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-06-05 20:11:16,079 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:16,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1741617971, now seen corresponding path program 132 times [2021-06-05 20:11:16,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:16,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403121872] [2021-06-05 20:11:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:16,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:16,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403121872] [2021-06-05 20:11:16,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403121872] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:16,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:16,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:16,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221724514] [2021-06-05 20:11:16,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:16,533 INFO L87 Difference]: Start difference. First operand 4498 states and 12023 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:17,708 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:17,869 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:18,041 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:11:18,243 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:11:18,449 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:11:18,772 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:11:18,914 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:11:19,055 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:11:19,203 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:11:19,326 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:19,485 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:11:19,635 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:11:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:19,644 INFO L93 Difference]: Finished difference Result 9236 states and 23427 transitions. [2021-06-05 20:11:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:11:19,644 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:19,651 INFO L225 Difference]: With dead ends: 9236 [2021-06-05 20:11:19,651 INFO L226 Difference]: Without dead ends: 9236 [2021-06-05 20:11:19,651 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2679.1ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:11:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9236 states. [2021-06-05 20:11:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9236 to 4504. [2021-06-05 20:11:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4504 states, 4502 states have (on average 2.6739227010217683) internal successors, (12038), 4503 states have internal predecessors, (12038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4504 states to 4504 states and 12038 transitions. [2021-06-05 20:11:19,712 INFO L78 Accepts]: Start accepts. Automaton has 4504 states and 12038 transitions. Word has length 94 [2021-06-05 20:11:19,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:19,712 INFO L482 AbstractCegarLoop]: Abstraction has 4504 states and 12038 transitions. [2021-06-05 20:11:19,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:19,712 INFO L276 IsEmpty]: Start isEmpty. Operand 4504 states and 12038 transitions. [2021-06-05 20:11:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:19,715 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:19,715 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:19,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-06-05 20:11:19,715 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:19,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:19,716 INFO L82 PathProgramCache]: Analyzing trace with hash -784813571, now seen corresponding path program 133 times [2021-06-05 20:11:19,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:19,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254627140] [2021-06-05 20:11:19,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:20,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:20,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254627140] [2021-06-05 20:11:20,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254627140] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:20,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:20,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:20,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679335202] [2021-06-05 20:11:20,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:20,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:20,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:20,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:20,167 INFO L87 Difference]: Start difference. First operand 4504 states and 12038 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:21,040 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:11:21,406 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:21,568 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:21,752 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:21,976 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:22,188 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:22,430 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:22,786 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:11:22,948 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:11:23,099 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:11:23,259 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:11:23,391 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:23,543 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:11:23,702 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:11:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:23,711 INFO L93 Difference]: Finished difference Result 9510 states and 23954 transitions. [2021-06-05 20:11:23,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:11:23,712 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:23,719 INFO L225 Difference]: With dead ends: 9510 [2021-06-05 20:11:23,719 INFO L226 Difference]: Without dead ends: 9510 [2021-06-05 20:11:23,720 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3053.4ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:11:23,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9510 states. [2021-06-05 20:11:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9510 to 4502. [2021-06-05 20:11:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4500 states have (on average 2.674) internal successors, (12033), 4501 states have internal predecessors, (12033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 12033 transitions. [2021-06-05 20:11:23,801 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 12033 transitions. Word has length 94 [2021-06-05 20:11:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:23,801 INFO L482 AbstractCegarLoop]: Abstraction has 4502 states and 12033 transitions. [2021-06-05 20:11:23,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 12033 transitions. [2021-06-05 20:11:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:23,805 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:23,805 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:23,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-06-05 20:11:23,805 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:23,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:23,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1320065741, now seen corresponding path program 134 times [2021-06-05 20:11:23,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:23,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940036138] [2021-06-05 20:11:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:24,277 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-06-05 20:11:24,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:24,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:24,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940036138] [2021-06-05 20:11:24,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940036138] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:24,500 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:24,500 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:24,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945463786] [2021-06-05 20:11:24,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:24,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:24,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:24,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:24,501 INFO L87 Difference]: Start difference. First operand 4502 states and 12033 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:25,235 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:11:25,383 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:11:25,756 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:25,918 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:11:26,092 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:26,281 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:26,490 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:26,673 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:26,898 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:27,229 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2021-06-05 20:11:27,381 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:11:27,548 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:11:27,732 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:11:27,872 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:28,033 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:11:28,188 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:11:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:28,195 INFO L93 Difference]: Finished difference Result 9260 states and 23480 transitions. [2021-06-05 20:11:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:11:28,195 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:28,204 INFO L225 Difference]: With dead ends: 9260 [2021-06-05 20:11:28,204 INFO L226 Difference]: Without dead ends: 9260 [2021-06-05 20:11:28,204 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 3505.8ms TimeCoverageRelationStatistics Valid=589, Invalid=1667, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:11:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9260 states. [2021-06-05 20:11:28,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9260 to 4498. [2021-06-05 20:11:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4498 states, 4496 states have (on average 2.674154804270463) internal successors, (12023), 4497 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 12023 transitions. [2021-06-05 20:11:28,314 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 12023 transitions. Word has length 94 [2021-06-05 20:11:28,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:28,314 INFO L482 AbstractCegarLoop]: Abstraction has 4498 states and 12023 transitions. [2021-06-05 20:11:28,314 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 12023 transitions. [2021-06-05 20:11:28,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:28,318 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:28,318 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:28,318 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-06-05 20:11:28,318 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:28,319 INFO L82 PathProgramCache]: Analyzing trace with hash 476601873, now seen corresponding path program 135 times [2021-06-05 20:11:28,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:28,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034361961] [2021-06-05 20:11:28,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:28,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:28,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:28,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034361961] [2021-06-05 20:11:28,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034361961] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:28,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:28,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:28,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117439979] [2021-06-05 20:11:28,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:28,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:28,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:28,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:28,858 INFO L87 Difference]: Start difference. First operand 4498 states and 12023 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:29,724 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:11:29,900 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:30,092 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:11:30,299 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:11:30,518 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:11:30,692 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:11:30,928 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:11:31,343 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:31,566 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:11:31,748 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:31,974 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:11:32,433 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:11:32,634 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:11:32,806 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:11:33,029 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:11:33,227 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:11:33,447 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:11:33,628 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:11:33,833 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:11:34,013 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:34,215 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:11:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:34,226 INFO L93 Difference]: Finished difference Result 10914 states and 27695 transitions. [2021-06-05 20:11:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:11:34,226 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:34,236 INFO L225 Difference]: With dead ends: 10914 [2021-06-05 20:11:34,236 INFO L226 Difference]: Without dead ends: 10914 [2021-06-05 20:11:34,236 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 4733.6ms TimeCoverageRelationStatistics Valid=828, Invalid=2034, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:11:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10914 states. [2021-06-05 20:11:34,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10914 to 4534. [2021-06-05 20:11:34,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4532 states have (on average 2.6767431597528684) internal successors, (12131), 4533 states have internal predecessors, (12131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 12131 transitions. [2021-06-05 20:11:34,361 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 12131 transitions. Word has length 94 [2021-06-05 20:11:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:34,361 INFO L482 AbstractCegarLoop]: Abstraction has 4534 states and 12131 transitions. [2021-06-05 20:11:34,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 12131 transitions. [2021-06-05 20:11:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:34,365 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:34,365 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:34,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-06-05 20:11:34,365 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1514421771, now seen corresponding path program 136 times [2021-06-05 20:11:34,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:34,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380238904] [2021-06-05 20:11:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:34,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:34,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380238904] [2021-06-05 20:11:34,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380238904] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:34,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:34,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:34,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411513487] [2021-06-05 20:11:34,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:34,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:34,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:34,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:34,887 INFO L87 Difference]: Start difference. First operand 4534 states and 12131 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:35,755 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 20:11:35,926 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:36,120 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:11:36,329 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:11:36,543 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:11:36,958 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:37,174 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:37,421 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:37,648 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:37,876 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:38,290 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:11:38,473 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:11:38,647 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:11:38,838 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:11:39,020 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:11:39,223 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:11:39,403 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:39,575 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:11:39,772 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:11:39,957 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:40,132 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:40,142 INFO L93 Difference]: Finished difference Result 11183 states and 28155 transitions. [2021-06-05 20:11:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 20:11:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:40,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:40,152 INFO L225 Difference]: With dead ends: 11183 [2021-06-05 20:11:40,152 INFO L226 Difference]: Without dead ends: 11183 [2021-06-05 20:11:40,152 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 4664.3ms TimeCoverageRelationStatistics Valid=812, Invalid=2050, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 20:11:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11183 states. [2021-06-05 20:11:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11183 to 4522. [2021-06-05 20:11:40,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-06-05 20:11:40,272 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-06-05 20:11:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:40,273 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-06-05 20:11:40,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-06-05 20:11:40,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:40,277 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:40,277 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:40,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-06-05 20:11:40,277 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:40,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:40,277 INFO L82 PathProgramCache]: Analyzing trace with hash -450607531, now seen corresponding path program 137 times [2021-06-05 20:11:40,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:40,277 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894614099] [2021-06-05 20:11:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:40,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:40,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894614099] [2021-06-05 20:11:40,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894614099] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:40,804 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:40,804 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:40,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692294995] [2021-06-05 20:11:40,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:40,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:40,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:40,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:40,805 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:41,514 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:11:41,836 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:42,098 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:11:42,494 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:11:42,688 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:42,872 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:43,076 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:43,292 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:43,526 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:43,883 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:11:44,054 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:11:44,234 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:11:44,411 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:11:44,585 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:11:44,762 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:44,768 INFO L93 Difference]: Finished difference Result 10010 states and 25408 transitions. [2021-06-05 20:11:44,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:11:44,769 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:44,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:44,778 INFO L225 Difference]: With dead ends: 10010 [2021-06-05 20:11:44,778 INFO L226 Difference]: Without dead ends: 10010 [2021-06-05 20:11:44,778 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 3568.3ms TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:11:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10010 states. [2021-06-05 20:11:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10010 to 4474. [2021-06-05 20:11:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 2.672406082289803) internal successors, (11951), 4473 states have internal predecessors, (11951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:44,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 11951 transitions. [2021-06-05 20:11:44,859 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 11951 transitions. Word has length 94 [2021-06-05 20:11:44,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:44,860 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 11951 transitions. [2021-06-05 20:11:44,860 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 11951 transitions. [2021-06-05 20:11:44,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:44,864 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:44,864 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:44,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-06-05 20:11:44,864 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:44,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1005207761, now seen corresponding path program 138 times [2021-06-05 20:11:44,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:44,864 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621462171] [2021-06-05 20:11:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:45,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:45,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621462171] [2021-06-05 20:11:45,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621462171] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:45,353 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:45,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:45,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104565059] [2021-06-05 20:11:45,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:45,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:45,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:45,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:45,354 INFO L87 Difference]: Start difference. First operand 4474 states and 11951 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:46,092 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 20:11:46,569 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:46,744 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:46,920 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:11:47,137 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:11:47,375 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:11:47,715 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:11:47,858 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:11:48,017 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:11:48,159 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:11:48,416 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:11:48,560 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:11:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:48,569 INFO L93 Difference]: Finished difference Result 9396 states and 23840 transitions. [2021-06-05 20:11:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:11:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:48,579 INFO L225 Difference]: With dead ends: 9396 [2021-06-05 20:11:48,579 INFO L226 Difference]: Without dead ends: 9396 [2021-06-05 20:11:48,579 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2827.1ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:11:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9396 states. [2021-06-05 20:11:48,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9396 to 4482. [2021-06-05 20:11:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4482 states, 4480 states have (on average 2.672098214285714) internal successors, (11971), 4481 states have internal predecessors, (11971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4482 states to 4482 states and 11971 transitions. [2021-06-05 20:11:48,670 INFO L78 Accepts]: Start accepts. Automaton has 4482 states and 11971 transitions. Word has length 94 [2021-06-05 20:11:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:48,670 INFO L482 AbstractCegarLoop]: Abstraction has 4482 states and 11971 transitions. [2021-06-05 20:11:48,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:48,670 INFO L276 IsEmpty]: Start isEmpty. Operand 4482 states and 11971 transitions. [2021-06-05 20:11:48,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:48,674 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:48,674 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:48,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-06-05 20:11:48,674 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:48,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:48,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1521223781, now seen corresponding path program 139 times [2021-06-05 20:11:48,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:48,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198917538] [2021-06-05 20:11:48,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:49,241 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:49,241 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198917538] [2021-06-05 20:11:49,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198917538] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:49,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:49,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:49,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990960532] [2021-06-05 20:11:49,241 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:49,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:49,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:49,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:49,242 INFO L87 Difference]: Start difference. First operand 4482 states and 11971 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:50,326 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:11:50,470 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:50,647 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:11:50,836 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:51,030 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:51,202 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:51,409 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:51,816 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:11:51,961 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:11:52,110 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:11:52,245 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:11:52,484 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:11:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:52,630 INFO L93 Difference]: Finished difference Result 9670 states and 24367 transitions. [2021-06-05 20:11:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:11:52,630 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:52,637 INFO L225 Difference]: With dead ends: 9670 [2021-06-05 20:11:52,637 INFO L226 Difference]: Without dead ends: 9670 [2021-06-05 20:11:52,637 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2983.7ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:11:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9670 states. [2021-06-05 20:11:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9670 to 4480. [2021-06-05 20:11:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4480 states, 4478 states have (on average 2.672175078159893) internal successors, (11966), 4479 states have internal predecessors, (11966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 11966 transitions. [2021-06-05 20:11:52,703 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 11966 transitions. Word has length 94 [2021-06-05 20:11:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:52,703 INFO L482 AbstractCegarLoop]: Abstraction has 4480 states and 11966 transitions. [2021-06-05 20:11:52,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 11966 transitions. [2021-06-05 20:11:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:52,707 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:52,707 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:52,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-06-05 20:11:52,707 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:52,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2056475951, now seen corresponding path program 140 times [2021-06-05 20:11:52,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:52,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920204837] [2021-06-05 20:11:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:53,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:53,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920204837] [2021-06-05 20:11:53,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920204837] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:53,174 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:53,174 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:53,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534125809] [2021-06-05 20:11:53,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:53,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:53,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:53,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:53,175 INFO L87 Difference]: Start difference. First operand 4480 states and 11966 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:54,254 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:11:54,410 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:11:54,581 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:54,770 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:54,970 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:55,141 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:55,353 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:55,793 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 20:11:55,918 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:11:56,052 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:11:56,310 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:11:56,461 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:11:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:11:56,470 INFO L93 Difference]: Finished difference Result 9736 states and 24511 transitions. [2021-06-05 20:11:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:11:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:11:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:11:56,478 INFO L225 Difference]: With dead ends: 9736 [2021-06-05 20:11:56,478 INFO L226 Difference]: Without dead ends: 9736 [2021-06-05 20:11:56,478 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 2933.4ms TimeCoverageRelationStatistics Valid=574, Invalid=1682, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:11:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2021-06-05 20:11:56,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 4476. [2021-06-05 20:11:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4476 states, 4474 states have (on average 2.6723290120697363) internal successors, (11956), 4475 states have internal predecessors, (11956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4476 states to 4476 states and 11956 transitions. [2021-06-05 20:11:56,548 INFO L78 Accepts]: Start accepts. Automaton has 4476 states and 11956 transitions. Word has length 94 [2021-06-05 20:11:56,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:11:56,548 INFO L482 AbstractCegarLoop]: Abstraction has 4476 states and 11956 transitions. [2021-06-05 20:11:56,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:56,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4476 states and 11956 transitions. [2021-06-05 20:11:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:11:56,552 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:11:56,552 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:11:56,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-06-05 20:11:56,552 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:11:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:11:56,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1048877009, now seen corresponding path program 141 times [2021-06-05 20:11:56,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:11:56,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11464791] [2021-06-05 20:11:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:11:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:11:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:11:57,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:11:57,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11464791] [2021-06-05 20:11:57,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11464791] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:11:57,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:11:57,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:11:57,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208297621] [2021-06-05 20:11:57,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:11:57,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:11:57,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:11:57,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:11:57,031 INFO L87 Difference]: Start difference. First operand 4476 states and 11956 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:11:58,150 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:11:58,298 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:11:58,475 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:11:58,646 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:11:58,828 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:11:59,037 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:11:59,211 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:11:59,420 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:11:59,982 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:12:00,116 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:12:00,244 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:12:00,367 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:12:00,505 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:12:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:00,511 INFO L93 Difference]: Finished difference Result 9438 states and 23931 transitions. [2021-06-05 20:12:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:12:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:00,518 INFO L225 Difference]: With dead ends: 9438 [2021-06-05 20:12:00,518 INFO L226 Difference]: Without dead ends: 9438 [2021-06-05 20:12:00,518 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3131.0ms TimeCoverageRelationStatistics Valid=605, Invalid=1747, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:12:00,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9438 states. [2021-06-05 20:12:00,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9438 to 4474. [2021-06-05 20:12:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 2.672406082289803) internal successors, (11951), 4473 states have internal predecessors, (11951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:00,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 11951 transitions. [2021-06-05 20:12:00,587 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 11951 transitions. Word has length 94 [2021-06-05 20:12:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:00,587 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 11951 transitions. [2021-06-05 20:12:00,588 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 11951 transitions. [2021-06-05 20:12:00,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:00,591 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:00,591 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:00,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-06-05 20:12:00,591 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:00,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:00,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1458215215, now seen corresponding path program 142 times [2021-06-05 20:12:00,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:00,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365534590] [2021-06-05 20:12:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:01,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:01,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365534590] [2021-06-05 20:12:01,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365534590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:01,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:01,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:01,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200470108] [2021-06-05 20:12:01,089 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:01,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:01,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:01,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:01,089 INFO L87 Difference]: Start difference. First operand 4474 states and 11951 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:01,887 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:02,045 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:02,177 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:12:02,350 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:12:02,534 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:12:02,744 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:12:02,919 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:12:03,131 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:12:03,453 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:03,621 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:03,848 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:12:04,018 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:04,225 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:12:04,552 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:12:04,737 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:12:04,883 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:12:05,079 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:12:05,236 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:12:05,437 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:12:05,628 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:12:05,907 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:12:06,063 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:06,260 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:12:06,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:06,271 INFO L93 Difference]: Finished difference Result 11265 states and 28607 transitions. [2021-06-05 20:12:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:12:06,271 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:06,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:06,279 INFO L225 Difference]: With dead ends: 11265 [2021-06-05 20:12:06,279 INFO L226 Difference]: Without dead ends: 11265 [2021-06-05 20:12:06,279 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 4671.1ms TimeCoverageRelationStatistics Valid=882, Invalid=2198, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:12:06,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11265 states. [2021-06-05 20:12:06,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11265 to 4522. [2021-06-05 20:12:06,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:06,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-06-05 20:12:06,357 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-06-05 20:12:06,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:06,357 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-06-05 20:12:06,357 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-06-05 20:12:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:06,361 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:06,361 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:06,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-06-05 20:12:06,361 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:06,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1798932183, now seen corresponding path program 143 times [2021-06-05 20:12:06,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:06,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869233702] [2021-06-05 20:12:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:06,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:06,906 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869233702] [2021-06-05 20:12:06,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869233702] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:06,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:06,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:06,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345838987] [2021-06-05 20:12:06,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:06,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:06,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:06,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:06,906 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:07,817 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:08,004 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:08,140 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:12:08,337 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:12:08,573 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:12:08,826 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:12:09,441 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:09,622 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:09,819 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:10,055 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:10,247 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:10,533 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:10,937 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:12:11,141 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:12:11,300 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:12:11,492 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:12:11,763 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:12:11,961 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:12:12,174 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:12,317 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:12:12,642 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:12:12,807 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:12,991 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:13,001 INFO L93 Difference]: Finished difference Result 11534 states and 29067 transitions. [2021-06-05 20:12:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:12:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:13,010 INFO L225 Difference]: With dead ends: 11534 [2021-06-05 20:12:13,011 INFO L226 Difference]: Without dead ends: 11534 [2021-06-05 20:12:13,011 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 5212.0ms TimeCoverageRelationStatistics Valid=865, Invalid=2215, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:12:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11534 states. [2021-06-05 20:12:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11534 to 4510. [2021-06-05 20:12:13,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-06-05 20:12:13,098 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-06-05 20:12:13,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:13,098 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-06-05 20:12:13,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:13,098 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-06-05 20:12:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:13,102 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:13,102 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:13,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-06-05 20:12:13,102 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:13,102 INFO L82 PathProgramCache]: Analyzing trace with hash 531005811, now seen corresponding path program 144 times [2021-06-05 20:12:13,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:13,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042537044] [2021-06-05 20:12:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:13,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:13,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042537044] [2021-06-05 20:12:13,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042537044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:13,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:13,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:13,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386267342] [2021-06-05 20:12:13,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:13,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:13,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:13,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:13,745 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:14,632 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:14,801 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:14,945 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:12:15,155 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:12:15,633 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:12:15,783 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:15,960 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:16,156 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:16,370 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:16,556 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:16,811 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:17,246 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:12:17,413 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:12:17,575 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:12:17,754 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:12:17,922 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:12:18,120 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:12:18,320 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:12:18,474 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:12:18,645 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:12:18,809 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:18,973 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:18,983 INFO L93 Difference]: Finished difference Result 11578 states and 29165 transitions. [2021-06-05 20:12:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 20:12:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:18,991 INFO L225 Difference]: With dead ends: 11578 [2021-06-05 20:12:18,991 INFO L226 Difference]: Without dead ends: 11578 [2021-06-05 20:12:18,991 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4641.4ms TimeCoverageRelationStatistics Valid=817, Invalid=2153, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 20:12:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11578 states. [2021-06-05 20:12:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11578 to 4486. [2021-06-05 20:12:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4484 states have (on average 2.6732827832292596) internal successors, (11987), 4485 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 11987 transitions. [2021-06-05 20:12:19,073 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 11987 transitions. Word has length 94 [2021-06-05 20:12:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:19,073 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 11987 transitions. [2021-06-05 20:12:19,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 11987 transitions. [2021-06-05 20:12:19,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:19,077 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:19,077 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:19,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-06-05 20:12:19,077 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:19,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:19,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1570959339, now seen corresponding path program 145 times [2021-06-05 20:12:19,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:19,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013319132] [2021-06-05 20:12:19,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:19,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:19,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:19,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013319132] [2021-06-05 20:12:19,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013319132] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:19,612 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:19,612 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:19,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270507807] [2021-06-05 20:12:19,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:19,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:19,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:19,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:19,613 INFO L87 Difference]: Start difference. First operand 4486 states and 11987 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:20,490 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:20,649 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:12:21,019 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:12:21,165 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:12:21,309 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:21,478 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:21,653 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:21,852 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:22,039 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:22,254 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:22,594 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:12:22,738 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:12:22,891 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:12:23,023 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:12:23,166 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:12:23,315 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:23,322 INFO L93 Difference]: Finished difference Result 10182 states and 25833 transitions. [2021-06-05 20:12:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:12:23,322 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:23,330 INFO L225 Difference]: With dead ends: 10182 [2021-06-05 20:12:23,330 INFO L226 Difference]: Without dead ends: 10182 [2021-06-05 20:12:23,331 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 3294.7ms TimeCoverageRelationStatistics Valid=620, Invalid=1732, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:12:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2021-06-05 20:12:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 4462. [2021-06-05 20:12:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.67152466367713) internal successors, (11915), 4461 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11915 transitions. [2021-06-05 20:12:23,414 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11915 transitions. Word has length 94 [2021-06-05 20:12:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:23,414 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11915 transitions. [2021-06-05 20:12:23,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:23,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11915 transitions. [2021-06-05 20:12:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:23,417 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:23,418 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:23,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-06-05 20:12:23,418 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:23,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:23,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1220806401, now seen corresponding path program 146 times [2021-06-05 20:12:23,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:23,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275417219] [2021-06-05 20:12:23,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:23,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:23,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275417219] [2021-06-05 20:12:23,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275417219] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:23,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:23,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:23,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163601800] [2021-06-05 20:12:23,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:23,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:23,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:23,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:23,878 INFO L87 Difference]: Start difference. First operand 4462 states and 11915 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:24,953 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:25,123 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:25,298 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:12:25,502 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:12:25,706 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:12:26,458 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2021-06-05 20:12:26,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:26,719 INFO L93 Difference]: Finished difference Result 8182 states and 20790 transitions. [2021-06-05 20:12:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:12:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:26,725 INFO L225 Difference]: With dead ends: 8182 [2021-06-05 20:12:26,725 INFO L226 Difference]: Without dead ends: 8182 [2021-06-05 20:12:26,725 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 2481.2ms TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:12:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8182 states. [2021-06-05 20:12:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8182 to 4472. [2021-06-05 20:12:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4470 states have (on average 2.6711409395973154) internal successors, (11940), 4471 states have internal predecessors, (11940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 11940 transitions. [2021-06-05 20:12:26,786 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 11940 transitions. Word has length 94 [2021-06-05 20:12:26,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:26,786 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 11940 transitions. [2021-06-05 20:12:26,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 11940 transitions. [2021-06-05 20:12:26,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:26,789 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:26,789 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:26,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-06-05 20:12:26,789 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:26,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1305625141, now seen corresponding path program 147 times [2021-06-05 20:12:26,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:26,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540356783] [2021-06-05 20:12:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:27,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:27,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540356783] [2021-06-05 20:12:27,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540356783] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:27,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:27,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:27,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275402148] [2021-06-05 20:12:27,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:27,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:27,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:27,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:27,257 INFO L87 Difference]: Start difference. First operand 4472 states and 11940 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:28,308 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:28,504 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:28,709 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:28,924 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:29,108 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:29,367 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:30,085 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 20:12:30,603 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-05 20:12:30,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:30,613 INFO L93 Difference]: Finished difference Result 8456 states and 21317 transitions. [2021-06-05 20:12:30,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:12:30,613 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:30,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:30,620 INFO L225 Difference]: With dead ends: 8456 [2021-06-05 20:12:30,620 INFO L226 Difference]: Without dead ends: 8456 [2021-06-05 20:12:30,621 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 2934.3ms TimeCoverageRelationStatistics Valid=527, Invalid=1635, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:12:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8456 states. [2021-06-05 20:12:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8456 to 4470. [2021-06-05 20:12:30,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 4468 states have (on average 2.671217547000895) internal successors, (11935), 4469 states have internal predecessors, (11935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:30,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 11935 transitions. [2021-06-05 20:12:30,691 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 11935 transitions. Word has length 94 [2021-06-05 20:12:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:30,691 INFO L482 AbstractCegarLoop]: Abstraction has 4470 states and 11935 transitions. [2021-06-05 20:12:30,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 11935 transitions. [2021-06-05 20:12:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:30,695 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:30,695 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:30,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-06-05 20:12:30,695 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:30,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1840877311, now seen corresponding path program 148 times [2021-06-05 20:12:30,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:30,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929080328] [2021-06-05 20:12:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:31,087 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2021-06-05 20:12:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:31,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:31,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929080328] [2021-06-05 20:12:31,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929080328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:31,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:31,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:31,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815690327] [2021-06-05 20:12:31,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:31,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:31,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:31,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:31,287 INFO L87 Difference]: Start difference. First operand 4470 states and 11935 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:32,436 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:32,607 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:12:32,792 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:32,971 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:33,217 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:33,388 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:33,605 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:34,574 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-06-05 20:12:34,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:34,714 INFO L93 Difference]: Finished difference Result 8522 states and 21461 transitions. [2021-06-05 20:12:34,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 20:12:34,715 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:34,722 INFO L225 Difference]: With dead ends: 8522 [2021-06-05 20:12:34,723 INFO L226 Difference]: Without dead ends: 8522 [2021-06-05 20:12:34,723 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 3106.0ms TimeCoverageRelationStatistics Valid=559, Invalid=1697, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 20:12:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8522 states. [2021-06-05 20:12:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8522 to 4466. [2021-06-05 20:12:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4464 states have (on average 2.6713709677419355) internal successors, (11925), 4465 states have internal predecessors, (11925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 11925 transitions. [2021-06-05 20:12:34,797 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 11925 transitions. Word has length 94 [2021-06-05 20:12:34,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:34,797 INFO L482 AbstractCegarLoop]: Abstraction has 4466 states and 11925 transitions. [2021-06-05 20:12:34,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 11925 transitions. [2021-06-05 20:12:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:34,800 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:34,800 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:34,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-06-05 20:12:34,801 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:34,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:34,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1264475649, now seen corresponding path program 149 times [2021-06-05 20:12:34,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:34,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251341479] [2021-06-05 20:12:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:35,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:35,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:35,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251341479] [2021-06-05 20:12:35,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251341479] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:35,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:35,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:35,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449410258] [2021-06-05 20:12:35,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:35,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:35,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:35,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:35,346 INFO L87 Difference]: Start difference. First operand 4466 states and 11925 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:36,366 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:12:36,521 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:12:36,699 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:12:36,853 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:37,051 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:37,267 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:37,491 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:37,675 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:37,903 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:38,650 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 20:12:39,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:39,014 INFO L93 Difference]: Finished difference Result 8588 states and 21605 transitions. [2021-06-05 20:12:39,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 20:12:39,015 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:39,021 INFO L225 Difference]: With dead ends: 8588 [2021-06-05 20:12:39,021 INFO L226 Difference]: Without dead ends: 8588 [2021-06-05 20:12:39,021 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3219.3ms TimeCoverageRelationStatistics Valid=590, Invalid=1762, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 20:12:39,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8588 states. [2021-06-05 20:12:39,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8588 to 4464. [2021-06-05 20:12:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4464 states, 4462 states have (on average 2.6714477812640074) internal successors, (11920), 4463 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:39,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4464 states to 4464 states and 11920 transitions. [2021-06-05 20:12:39,089 INFO L78 Accepts]: Start accepts. Automaton has 4464 states and 11920 transitions. Word has length 94 [2021-06-05 20:12:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:39,089 INFO L482 AbstractCegarLoop]: Abstraction has 4464 states and 11920 transitions. [2021-06-05 20:12:39,089 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4464 states and 11920 transitions. [2021-06-05 20:12:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:39,093 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:39,093 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:39,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-06-05 20:12:39,093 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash -997465141, now seen corresponding path program 150 times [2021-06-05 20:12:39,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:39,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127461668] [2021-06-05 20:12:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:39,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:39,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127461668] [2021-06-05 20:12:39,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127461668] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:39,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:39,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:39,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900821212] [2021-06-05 20:12:39,643 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:39,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:39,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:39,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:39,643 INFO L87 Difference]: Start difference. First operand 4464 states and 11920 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:40,032 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-05 20:12:40,719 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:12:40,863 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:12:41,011 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:12:41,206 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:12:41,358 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:41,543 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:41,756 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:41,962 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:42,130 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:42,336 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:43,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:43,307 INFO L93 Difference]: Finished difference Result 8244 states and 20924 transitions. [2021-06-05 20:12:43,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 20:12:43,307 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:43,313 INFO L225 Difference]: With dead ends: 8244 [2021-06-05 20:12:43,313 INFO L226 Difference]: Without dead ends: 8244 [2021-06-05 20:12:43,314 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 3343.1ms TimeCoverageRelationStatistics Valid=620, Invalid=1830, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 20:12:43,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2021-06-05 20:12:43,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 4462. [2021-06-05 20:12:43,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4460 states have (on average 2.67152466367713) internal successors, (11915), 4461 states have internal predecessors, (11915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:43,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 11915 transitions. [2021-06-05 20:12:43,376 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 11915 transitions. Word has length 94 [2021-06-05 20:12:43,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:43,376 INFO L482 AbstractCegarLoop]: Abstraction has 4462 states and 11915 transitions. [2021-06-05 20:12:43,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 11915 transitions. [2021-06-05 20:12:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:43,380 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:43,380 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:43,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-06-05 20:12:43,380 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:43,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1626842101, now seen corresponding path program 151 times [2021-06-05 20:12:43,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:43,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484201830] [2021-06-05 20:12:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:43,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:43,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:43,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484201830] [2021-06-05 20:12:43,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484201830] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:43,922 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:43,922 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:43,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202364178] [2021-06-05 20:12:43,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:43,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:43,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:43,923 INFO L87 Difference]: Start difference. First operand 4462 states and 11915 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:44,766 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:44,894 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:12:45,058 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:45,200 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:12:45,390 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:12:45,588 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:12:45,796 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:12:45,961 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:12:46,177 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:12:46,489 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:12:46,706 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:46,923 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:47,172 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:12:47,357 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:47,590 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:12:47,972 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:12:48,170 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:12:48,314 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:12:48,521 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2021-06-05 20:12:48,668 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:12:48,883 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2021-06-05 20:12:49,027 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:12:49,232 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 20:12:49,376 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:12:49,576 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:12:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:49,586 INFO L93 Difference]: Finished difference Result 8705 states and 22216 transitions. [2021-06-05 20:12:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 20:12:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:49,594 INFO L225 Difference]: With dead ends: 8705 [2021-06-05 20:12:49,594 INFO L226 Difference]: Without dead ends: 8705 [2021-06-05 20:12:49,595 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 5058.6ms TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 20:12:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2021-06-05 20:12:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 4522. [2021-06-05 20:12:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4522 states, 4520 states have (on average 2.6758849557522124) internal successors, (12095), 4521 states have internal predecessors, (12095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4522 states to 4522 states and 12095 transitions. [2021-06-05 20:12:49,703 INFO L78 Accepts]: Start accepts. Automaton has 4522 states and 12095 transitions. Word has length 94 [2021-06-05 20:12:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:49,703 INFO L482 AbstractCegarLoop]: Abstraction has 4522 states and 12095 transitions. [2021-06-05 20:12:49,703 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:49,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4522 states and 12095 transitions. [2021-06-05 20:12:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:49,706 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:49,707 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:49,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-06-05 20:12:49,707 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash -589022203, now seen corresponding path program 152 times [2021-06-05 20:12:49,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:49,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375077473] [2021-06-05 20:12:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:50,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:50,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:50,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375077473] [2021-06-05 20:12:50,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375077473] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:50,254 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:50,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:50,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296767823] [2021-06-05 20:12:50,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:50,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:50,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:50,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:50,254 INFO L87 Difference]: Start difference. First operand 4522 states and 12095 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:51,204 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:51,334 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:12:51,499 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:51,643 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:12:51,833 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:12:52,042 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 20:12:52,253 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:12:52,606 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:12:52,805 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:52,999 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:53,201 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:53,411 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:53,597 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:53,829 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:12:54,244 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:12:54,422 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2021-06-05 20:12:54,560 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:12:54,766 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 20:12:54,918 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:12:55,113 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2021-06-05 20:12:55,289 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:55,426 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:12:55,611 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:12:55,785 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:12:55,964 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:12:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:12:55,974 INFO L93 Difference]: Finished difference Result 8974 states and 22676 transitions. [2021-06-05 20:12:55,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 20:12:55,974 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:12:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:12:55,980 INFO L225 Difference]: With dead ends: 8974 [2021-06-05 20:12:55,980 INFO L226 Difference]: Without dead ends: 8974 [2021-06-05 20:12:55,981 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 5033.5ms TimeCoverageRelationStatistics Valid=917, Invalid=2389, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 20:12:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8974 states. [2021-06-05 20:12:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8974 to 4510. [2021-06-05 20:12:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4510 states, 4508 states have (on average 2.675022182786158) internal successors, (12059), 4509 states have internal predecessors, (12059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 12059 transitions. [2021-06-05 20:12:56,050 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 12059 transitions. Word has length 94 [2021-06-05 20:12:56,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:12:56,050 INFO L482 AbstractCegarLoop]: Abstraction has 4510 states and 12059 transitions. [2021-06-05 20:12:56,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 12059 transitions. [2021-06-05 20:12:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:12:56,054 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:12:56,054 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:12:56,054 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-06-05 20:12:56,054 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:12:56,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:12:56,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1740915791, now seen corresponding path program 153 times [2021-06-05 20:12:56,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:12:56,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199268475] [2021-06-05 20:12:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:12:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:12:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:12:56,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:12:56,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199268475] [2021-06-05 20:12:56,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199268475] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:12:56,611 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:12:56,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:12:56,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193351803] [2021-06-05 20:12:56,612 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:12:56,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:12:56,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:12:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:12:56,612 INFO L87 Difference]: Start difference. First operand 4510 states and 12059 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:12:57,490 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:12:57,618 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:12:57,783 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:12:57,925 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:12:58,112 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:12:58,622 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:12:58,786 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:12:58,938 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:12:59,125 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:12:59,354 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:12:59,578 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:12:59,790 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:13:00,004 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:13:00,379 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:13:00,535 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:13:00,667 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:13:00,831 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:13:00,970 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:13:01,152 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 20:13:01,303 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:13:01,430 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:13:01,600 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 20:13:01,890 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:13:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:01,900 INFO L93 Difference]: Finished difference Result 9018 states and 22774 transitions. [2021-06-05 20:13:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 20:13:01,900 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:01,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:01,905 INFO L225 Difference]: With dead ends: 9018 [2021-06-05 20:13:01,906 INFO L226 Difference]: Without dead ends: 9018 [2021-06-05 20:13:01,906 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 4600.6ms TimeCoverageRelationStatistics Valid=868, Invalid=2324, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 20:13:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9018 states. [2021-06-05 20:13:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9018 to 4486. [2021-06-05 20:13:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4486 states, 4484 states have (on average 2.6732827832292596) internal successors, (11987), 4485 states have internal predecessors, (11987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 11987 transitions. [2021-06-05 20:13:01,966 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 11987 transitions. Word has length 94 [2021-06-05 20:13:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:01,967 INFO L482 AbstractCegarLoop]: Abstraction has 4486 states and 11987 transitions. [2021-06-05 20:13:01,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 11987 transitions. [2021-06-05 20:13:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:01,970 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:01,970 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:01,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-06-05 20:13:01,970 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:01,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:01,970 INFO L82 PathProgramCache]: Analyzing trace with hash -361049359, now seen corresponding path program 154 times [2021-06-05 20:13:01,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:01,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140153083] [2021-06-05 20:13:01,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:02,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:02,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140153083] [2021-06-05 20:13:02,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140153083] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:02,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:02,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:02,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815645353] [2021-06-05 20:13:02,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:02,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:02,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:02,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:02,474 INFO L87 Difference]: Start difference. First operand 4486 states and 11987 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:03,293 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-06-05 20:13:03,567 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 20:13:03,960 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:13:04,100 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:13:04,248 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:13:04,390 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:13:04,573 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:13:04,778 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:13:04,987 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:13:05,203 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:13:05,445 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:13:05,889 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:13:06,029 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:13:06,162 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:13:06,326 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 20:13:06,480 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:13:06,643 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 20:13:06,788 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:13:06,924 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:13:07,105 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 20:13:07,284 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:13:07,434 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:13:07,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:07,444 INFO L93 Difference]: Finished difference Result 9073 states and 22895 transitions. [2021-06-05 20:13:07,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 20:13:07,445 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:07,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:07,452 INFO L225 Difference]: With dead ends: 9073 [2021-06-05 20:13:07,452 INFO L226 Difference]: Without dead ends: 9073 [2021-06-05 20:13:07,452 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 4347.8ms TimeCoverageRelationStatistics Valid=821, Invalid=2259, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 20:13:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9073 states. [2021-06-05 20:13:07,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9073 to 4474. [2021-06-05 20:13:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4474 states, 4472 states have (on average 2.672406082289803) internal successors, (11951), 4473 states have internal predecessors, (11951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4474 states to 4474 states and 11951 transitions. [2021-06-05 20:13:07,524 INFO L78 Accepts]: Start accepts. Automaton has 4474 states and 11951 transitions. Word has length 94 [2021-06-05 20:13:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:07,524 INFO L482 AbstractCegarLoop]: Abstraction has 4474 states and 11951 transitions. [2021-06-05 20:13:07,524 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4474 states and 11951 transitions. [2021-06-05 20:13:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:07,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:07,528 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:07,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-06-05 20:13:07,528 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:07,529 INFO L82 PathProgramCache]: Analyzing trace with hash 892831425, now seen corresponding path program 155 times [2021-06-05 20:13:07,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:07,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711779676] [2021-06-05 20:13:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:08,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:08,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711779676] [2021-06-05 20:13:08,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711779676] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:08,120 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:08,120 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:08,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448291494] [2021-06-05 20:13:08,120 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:08,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:08,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:08,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:08,121 INFO L87 Difference]: Start difference. First operand 4474 states and 11951 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:09,000 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:13:09,337 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:13:09,478 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:13:09,614 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:13:09,779 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 20:13:09,933 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 20:13:10,147 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:13:10,336 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:13:10,545 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 20:13:10,727 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:13:10,950 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:13:11,284 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 20:13:11,427 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2021-06-05 20:13:11,575 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 20:13:11,702 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:13:11,838 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 20:13:11,983 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:13:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:11,990 INFO L93 Difference]: Finished difference Result 7530 states and 19192 transitions. [2021-06-05 20:13:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 20:13:11,990 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:11,997 INFO L225 Difference]: With dead ends: 7530 [2021-06-05 20:13:11,997 INFO L226 Difference]: Without dead ends: 7530 [2021-06-05 20:13:11,997 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3509.1ms TimeCoverageRelationStatistics Valid=635, Invalid=1815, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 20:13:12,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7530 states. [2021-06-05 20:13:12,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7530 to 4450. [2021-06-05 20:13:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4448 states have (on average 2.670638489208633) internal successors, (11879), 4449 states have internal predecessors, (11879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 11879 transitions. [2021-06-05 20:13:12,074 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 11879 transitions. Word has length 94 [2021-06-05 20:13:12,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:12,074 INFO L482 AbstractCegarLoop]: Abstraction has 4450 states and 11879 transitions. [2021-06-05 20:13:12,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 11879 transitions. [2021-06-05 20:13:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:12,079 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:12,079 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:12,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-06-05 20:13:12,079 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:12,079 INFO L82 PathProgramCache]: Analyzing trace with hash -657056875, now seen corresponding path program 156 times [2021-06-05 20:13:12,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:12,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40144813] [2021-06-05 20:13:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:12,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:12,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:12,409 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40144813] [2021-06-05 20:13:12,409 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40144813] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:12,409 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:12,409 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-06-05 20:13:12,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771746207] [2021-06-05 20:13:12,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 20:13:12,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:12,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 20:13:12,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-06-05 20:13:12,410 INFO L87 Difference]: Start difference. First operand 4450 states and 11879 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:12,891 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-06-05 20:13:13,011 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-06-05 20:13:13,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:13,415 INFO L93 Difference]: Finished difference Result 5363 states and 13672 transitions. [2021-06-05 20:13:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 20:13:13,415 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:13,420 INFO L225 Difference]: With dead ends: 5363 [2021-06-05 20:13:13,420 INFO L226 Difference]: Without dead ends: 5363 [2021-06-05 20:13:13,420 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 907.5ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 20:13:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2021-06-05 20:13:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 4472. [2021-06-05 20:13:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4472 states, 4470 states have (on average 2.6693512304250557) internal successors, (11932), 4471 states have internal predecessors, (11932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:13,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 11932 transitions. [2021-06-05 20:13:13,474 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 11932 transitions. Word has length 94 [2021-06-05 20:13:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:13,474 INFO L482 AbstractCegarLoop]: Abstraction has 4472 states and 11932 transitions. [2021-06-05 20:13:13,474 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 11932 transitions. [2021-06-05 20:13:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:13,477 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:13,477 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:13,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-06-05 20:13:13,478 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:13,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:13,478 INFO L82 PathProgramCache]: Analyzing trace with hash 764494319, now seen corresponding path program 157 times [2021-06-05 20:13:13,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:13,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132888165] [2021-06-05 20:13:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:13,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:13,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132888165] [2021-06-05 20:13:13,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132888165] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:13,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:13,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:13,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282291309] [2021-06-05 20:13:13,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:13,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:13,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:13,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:13,988 INFO L87 Difference]: Start difference. First operand 4472 states and 11932 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:14,964 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:15,357 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:13:15,535 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:15,727 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:15,992 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:16,260 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:13:16,414 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:13:16,574 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:13:16,742 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:13:16,890 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:13:17,041 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:13:17,229 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:13:17,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:17,236 INFO L93 Difference]: Finished difference Result 8380 states and 21504 transitions. [2021-06-05 20:13:17,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:17,236 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:17,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:17,243 INFO L225 Difference]: With dead ends: 8380 [2021-06-05 20:13:17,243 INFO L226 Difference]: Without dead ends: 8380 [2021-06-05 20:13:17,243 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2944.6ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2021-06-05 20:13:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 4640. [2021-06-05 20:13:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4640 states, 4638 states have (on average 2.68132815868909) internal successors, (12436), 4639 states have internal predecessors, (12436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4640 states to 4640 states and 12436 transitions. [2021-06-05 20:13:17,314 INFO L78 Accepts]: Start accepts. Automaton has 4640 states and 12436 transitions. Word has length 94 [2021-06-05 20:13:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:17,315 INFO L482 AbstractCegarLoop]: Abstraction has 4640 states and 12436 transitions. [2021-06-05 20:13:17,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4640 states and 12436 transitions. [2021-06-05 20:13:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:17,318 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:17,319 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:17,319 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-06-05 20:13:17,319 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:17,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:17,319 INFO L82 PathProgramCache]: Analyzing trace with hash 479175151, now seen corresponding path program 158 times [2021-06-05 20:13:17,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:17,319 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570047563] [2021-06-05 20:13:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:17,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:17,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570047563] [2021-06-05 20:13:17,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570047563] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:17,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:17,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:17,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713699782] [2021-06-05 20:13:17,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:17,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:17,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:17,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:17,788 INFO L87 Difference]: Start difference. First operand 4640 states and 12436 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:18,581 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:13:18,733 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:18,934 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:13:19,279 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:19,464 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:19,656 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:19,935 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:13:20,105 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:13:20,280 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:13:20,459 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:13:20,656 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:20,849 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:13:21,151 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:13:21,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:21,158 INFO L93 Difference]: Finished difference Result 8386 states and 21522 transitions. [2021-06-05 20:13:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:21,158 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:21,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:21,166 INFO L225 Difference]: With dead ends: 8386 [2021-06-05 20:13:21,166 INFO L226 Difference]: Without dead ends: 8386 [2021-06-05 20:13:21,166 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3055.9ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8386 states. [2021-06-05 20:13:21,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8386 to 4676. [2021-06-05 20:13:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4676 states, 4674 states have (on average 2.683782627299957) internal successors, (12544), 4675 states have internal predecessors, (12544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 12544 transitions. [2021-06-05 20:13:21,239 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 12544 transitions. Word has length 94 [2021-06-05 20:13:21,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:21,239 INFO L482 AbstractCegarLoop]: Abstraction has 4676 states and 12544 transitions. [2021-06-05 20:13:21,239 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 12544 transitions. [2021-06-05 20:13:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:21,243 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:21,243 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:21,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-06-05 20:13:21,243 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash 189069773, now seen corresponding path program 159 times [2021-06-05 20:13:21,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:21,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562565000] [2021-06-05 20:13:21,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:21,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:21,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:21,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562565000] [2021-06-05 20:13:21,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562565000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:21,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:21,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:21,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546044406] [2021-06-05 20:13:21,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:21,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:21,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:21,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:21,786 INFO L87 Difference]: Start difference. First operand 4676 states and 12544 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:22,744 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:22,965 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:13:23,177 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:13:23,414 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:13:23,796 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:24,005 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:24,358 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:13:24,588 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:13:24,798 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:13:25,002 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:13:25,207 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:25,214 INFO L93 Difference]: Finished difference Result 8074 states and 20938 transitions. [2021-06-05 20:13:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:13:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:25,222 INFO L225 Difference]: With dead ends: 8074 [2021-06-05 20:13:25,222 INFO L226 Difference]: Without dead ends: 8074 [2021-06-05 20:13:25,222 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3054.8ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:13:25,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2021-06-05 20:13:25,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 4568. [2021-06-05 20:13:25,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4568 states, 4566 states have (on average 2.676303109943057) internal successors, (12220), 4567 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 12220 transitions. [2021-06-05 20:13:25,287 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 12220 transitions. Word has length 94 [2021-06-05 20:13:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:25,288 INFO L482 AbstractCegarLoop]: Abstraction has 4568 states and 12220 transitions. [2021-06-05 20:13:25,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:25,288 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 12220 transitions. [2021-06-05 20:13:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:25,292 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:25,292 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:25,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-06-05 20:13:25,292 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:25,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:25,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1276778039, now seen corresponding path program 160 times [2021-06-05 20:13:25,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:25,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833552144] [2021-06-05 20:13:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:25,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:25,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833552144] [2021-06-05 20:13:25,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833552144] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:25,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:25,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:25,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659363566] [2021-06-05 20:13:25,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:25,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:25,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:25,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:25,758 INFO L87 Difference]: Start difference. First operand 4568 states and 12220 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:26,905 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:27,056 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:13:27,245 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:27,487 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:27,714 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:27,954 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:13:28,091 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:13:28,227 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:13:28,371 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:13:28,490 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:28,629 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:13:28,769 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:13:28,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:28,776 INFO L93 Difference]: Finished difference Result 7318 states and 18856 transitions. [2021-06-05 20:13:28,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:28,777 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:28,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:28,783 INFO L225 Difference]: With dead ends: 7318 [2021-06-05 20:13:28,783 INFO L226 Difference]: Without dead ends: 7318 [2021-06-05 20:13:28,784 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2717.5ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:28,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7318 states. [2021-06-05 20:13:28,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7318 to 4574. [2021-06-05 20:13:28,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4572 states have (on average 2.676071741032371) internal successors, (12235), 4573 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12235 transitions. [2021-06-05 20:13:28,848 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12235 transitions. Word has length 94 [2021-06-05 20:13:28,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:28,849 INFO L482 AbstractCegarLoop]: Abstraction has 4574 states and 12235 transitions. [2021-06-05 20:13:28,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12235 transitions. [2021-06-05 20:13:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:28,853 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:28,853 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:28,853 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-06-05 20:13:28,853 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:28,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:28,853 INFO L82 PathProgramCache]: Analyzing trace with hash -329113785, now seen corresponding path program 161 times [2021-06-05 20:13:28,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:28,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530136716] [2021-06-05 20:13:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:29,341 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:29,341 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530136716] [2021-06-05 20:13:29,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530136716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:29,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:29,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:29,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219037972] [2021-06-05 20:13:29,341 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:29,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:29,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:29,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:29,342 INFO L87 Difference]: Start difference. First operand 4574 states and 12235 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:30,197 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:13:30,351 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:30,821 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:13:31,000 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:31,200 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:31,406 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:31,703 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:13:31,863 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:13:32,019 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:13:32,184 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:13:32,344 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:13:32,500 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:13:32,692 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:13:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:32,699 INFO L93 Difference]: Finished difference Result 9526 states and 24379 transitions. [2021-06-05 20:13:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:32,699 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:32,709 INFO L225 Difference]: With dead ends: 9526 [2021-06-05 20:13:32,709 INFO L226 Difference]: Without dead ends: 9526 [2021-06-05 20:13:32,709 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2872.3ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9526 states. [2021-06-05 20:13:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9526 to 4670. [2021-06-05 20:13:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4670 states, 4668 states have (on average 2.6827335047129393) internal successors, (12523), 4669 states have internal predecessors, (12523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 12523 transitions. [2021-06-05 20:13:32,801 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 12523 transitions. Word has length 94 [2021-06-05 20:13:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:32,801 INFO L482 AbstractCegarLoop]: Abstraction has 4670 states and 12523 transitions. [2021-06-05 20:13:32,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 12523 transitions. [2021-06-05 20:13:32,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:32,806 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:32,806 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:32,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-06-05 20:13:32,806 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:32,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:32,806 INFO L82 PathProgramCache]: Analyzing trace with hash -614432953, now seen corresponding path program 162 times [2021-06-05 20:13:32,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:32,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647752889] [2021-06-05 20:13:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:33,308 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:33,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647752889] [2021-06-05 20:13:33,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647752889] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:33,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:33,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:33,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984746672] [2021-06-05 20:13:33,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:33,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:33,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:33,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:33,309 INFO L87 Difference]: Start difference. First operand 4670 states and 12523 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:34,314 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:34,541 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:13:34,917 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:35,115 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:35,318 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:35,742 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:13:35,926 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:13:36,111 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:13:36,350 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:13:36,600 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:36,779 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:13:37,005 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:13:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:37,012 INFO L93 Difference]: Finished difference Result 10578 states and 26952 transitions. [2021-06-05 20:13:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:37,013 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:37,020 INFO L225 Difference]: With dead ends: 10578 [2021-06-05 20:13:37,021 INFO L226 Difference]: Without dead ends: 10578 [2021-06-05 20:13:37,021 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3312.3ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:37,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2021-06-05 20:13:37,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 4706. [2021-06-05 20:13:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4706 states, 4704 states have (on average 2.6851615646258504) internal successors, (12631), 4705 states have internal predecessors, (12631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4706 states to 4706 states and 12631 transitions. [2021-06-05 20:13:37,105 INFO L78 Accepts]: Start accepts. Automaton has 4706 states and 12631 transitions. Word has length 94 [2021-06-05 20:13:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:37,105 INFO L482 AbstractCegarLoop]: Abstraction has 4706 states and 12631 transitions. [2021-06-05 20:13:37,105 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:37,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4706 states and 12631 transitions. [2021-06-05 20:13:37,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:37,109 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:37,110 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:37,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-06-05 20:13:37,110 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:37,110 INFO L82 PathProgramCache]: Analyzing trace with hash -904538331, now seen corresponding path program 163 times [2021-06-05 20:13:37,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:37,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675672363] [2021-06-05 20:13:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:37,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:37,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675672363] [2021-06-05 20:13:37,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675672363] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:37,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:37,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:37,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584955883] [2021-06-05 20:13:37,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:37,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:37,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:37,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:37,595 INFO L87 Difference]: Start difference. First operand 4706 states and 12631 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:38,458 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:13:38,613 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:38,862 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:13:39,075 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:13:39,321 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:13:39,713 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:39,930 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:40,265 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:13:40,469 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:13:40,681 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:13:40,884 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:13:41,088 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:41,095 INFO L93 Difference]: Finished difference Result 10266 states and 26368 transitions. [2021-06-05 20:13:41,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:13:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:41,105 INFO L225 Difference]: With dead ends: 10266 [2021-06-05 20:13:41,105 INFO L226 Difference]: Without dead ends: 10266 [2021-06-05 20:13:41,106 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3139.1ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:13:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10266 states. [2021-06-05 20:13:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10266 to 4598. [2021-06-05 20:13:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4598 states, 4596 states have (on average 2.677763272410792) internal successors, (12307), 4597 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 12307 transitions. [2021-06-05 20:13:41,196 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 12307 transitions. Word has length 94 [2021-06-05 20:13:41,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:41,197 INFO L482 AbstractCegarLoop]: Abstraction has 4598 states and 12307 transitions. [2021-06-05 20:13:41,197 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:41,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 12307 transitions. [2021-06-05 20:13:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:41,201 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:41,201 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:41,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-06-05 20:13:41,201 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:41,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1633214571, now seen corresponding path program 164 times [2021-06-05 20:13:41,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:41,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132582753] [2021-06-05 20:13:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:41,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:41,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132582753] [2021-06-05 20:13:41,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132582753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:41,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:41,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:41,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832163531] [2021-06-05 20:13:41,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:41,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:41,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:41,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:41,670 INFO L87 Difference]: Start difference. First operand 4598 states and 12307 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:42,518 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:13:42,858 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:43,002 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:13:43,203 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:13:43,419 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:13:43,630 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:13:43,923 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:13:44,102 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:13:44,250 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:13:44,401 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:13:44,524 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:44,668 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:13:44,831 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:13:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:44,841 INFO L93 Difference]: Finished difference Result 9082 states and 23184 transitions. [2021-06-05 20:13:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:44,841 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:44,851 INFO L225 Difference]: With dead ends: 9082 [2021-06-05 20:13:44,851 INFO L226 Difference]: Without dead ends: 9082 [2021-06-05 20:13:44,851 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2774.4ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2021-06-05 20:13:44,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 4602. [2021-06-05 20:13:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4602 states, 4600 states have (on average 2.677608695652174) internal successors, (12317), 4601 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4602 states to 4602 states and 12317 transitions. [2021-06-05 20:13:44,964 INFO L78 Accepts]: Start accepts. Automaton has 4602 states and 12317 transitions. Word has length 94 [2021-06-05 20:13:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:44,965 INFO L482 AbstractCegarLoop]: Abstraction has 4602 states and 12317 transitions. [2021-06-05 20:13:44,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4602 states and 12317 transitions. [2021-06-05 20:13:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:44,969 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:44,969 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:44,969 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-06-05 20:13:44,969 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:44,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash 700068449, now seen corresponding path program 165 times [2021-06-05 20:13:44,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:44,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310573655] [2021-06-05 20:13:44,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:45,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:45,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:45,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310573655] [2021-06-05 20:13:45,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310573655] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:45,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:45,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:45,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055647176] [2021-06-05 20:13:45,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:45,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:45,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:45,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:45,460 INFO L87 Difference]: Start difference. First operand 4602 states and 12317 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:46,578 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:46,739 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:13:46,925 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:13:47,143 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:13:47,360 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:13:47,639 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:13:47,783 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:13:47,982 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:13:48,130 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:13:48,254 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:48,401 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:13:48,556 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:13:48,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:48,565 INFO L93 Difference]: Finished difference Result 9244 states and 23499 transitions. [2021-06-05 20:13:48,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:48,566 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:48,574 INFO L225 Difference]: With dead ends: 9244 [2021-06-05 20:13:48,574 INFO L226 Difference]: Without dead ends: 9244 [2021-06-05 20:13:48,574 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2796.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:48,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9244 states. [2021-06-05 20:13:48,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9244 to 4604. [2021-06-05 20:13:48,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4602 states have (on average 2.6775315080399826) internal successors, (12322), 4603 states have internal predecessors, (12322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 12322 transitions. [2021-06-05 20:13:48,652 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 12322 transitions. Word has length 94 [2021-06-05 20:13:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:48,652 INFO L482 AbstractCegarLoop]: Abstraction has 4604 states and 12322 transitions. [2021-06-05 20:13:48,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 12322 transitions. [2021-06-05 20:13:48,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:48,656 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:48,656 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:48,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-06-05 20:13:48,656 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:48,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:48,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1913885101, now seen corresponding path program 166 times [2021-06-05 20:13:48,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:48,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109411647] [2021-06-05 20:13:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:49,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:49,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109411647] [2021-06-05 20:13:49,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109411647] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:49,163 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:49,163 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:49,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94770163] [2021-06-05 20:13:49,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:49,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:49,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:49,164 INFO L87 Difference]: Start difference. First operand 4604 states and 12322 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:50,343 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:50,503 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:13:50,728 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:13:50,937 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:13:51,135 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:13:51,363 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:13:51,673 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:13:51,826 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:13:51,967 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:13:52,128 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:13:52,261 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:13:52,410 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:13:52,562 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:13:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:52,569 INFO L93 Difference]: Finished difference Result 9042 states and 23095 transitions. [2021-06-05 20:13:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:13:52,569 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:52,577 INFO L225 Difference]: With dead ends: 9042 [2021-06-05 20:13:52,577 INFO L226 Difference]: Without dead ends: 9042 [2021-06-05 20:13:52,577 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3046.4ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:13:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9042 states. [2021-06-05 20:13:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9042 to 4598. [2021-06-05 20:13:52,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4598 states, 4596 states have (on average 2.677763272410792) internal successors, (12307), 4597 states have internal predecessors, (12307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:52,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 12307 transitions. [2021-06-05 20:13:52,659 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 12307 transitions. Word has length 94 [2021-06-05 20:13:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:52,659 INFO L482 AbstractCegarLoop]: Abstraction has 4598 states and 12307 transitions. [2021-06-05 20:13:52,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 12307 transitions. [2021-06-05 20:13:52,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:52,663 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:52,663 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:52,663 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-06-05 20:13:52,664 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:52,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1698154429, now seen corresponding path program 167 times [2021-06-05 20:13:52,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:52,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035831909] [2021-06-05 20:13:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:53,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:53,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035831909] [2021-06-05 20:13:53,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035831909] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:53,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:53,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:53,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040279792] [2021-06-05 20:13:53,130 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:53,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:53,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:53,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:53,131 INFO L87 Difference]: Start difference. First operand 4598 states and 12307 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:54,019 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:13:54,210 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:54,388 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:13:54,820 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:55,023 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:55,244 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:13:55,570 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:13:55,830 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:13:56,014 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:13:56,204 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:13:56,372 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:13:56,554 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:13:56,760 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:13:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:13:56,768 INFO L93 Difference]: Finished difference Result 9366 states and 23937 transitions. [2021-06-05 20:13:56,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:13:56,768 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:13:56,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:13:56,778 INFO L225 Difference]: With dead ends: 9366 [2021-06-05 20:13:56,808 INFO L226 Difference]: Without dead ends: 9366 [2021-06-05 20:13:56,809 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3204.6ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:13:56,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9366 states. [2021-06-05 20:13:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9366 to 4646. [2021-06-05 20:13:56,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 4644 states have (on average 2.6810938845822565) internal successors, (12451), 4645 states have internal predecessors, (12451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 12451 transitions. [2021-06-05 20:13:56,895 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 12451 transitions. Word has length 94 [2021-06-05 20:13:56,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:13:56,895 INFO L482 AbstractCegarLoop]: Abstraction has 4646 states and 12451 transitions. [2021-06-05 20:13:56,895 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:56,895 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 12451 transitions. [2021-06-05 20:13:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:13:56,899 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:13:56,900 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:13:56,900 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-06-05 20:13:56,900 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:13:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:13:56,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1988259807, now seen corresponding path program 168 times [2021-06-05 20:13:56,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:13:56,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452170918] [2021-06-05 20:13:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:13:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:13:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:13:57,394 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:13:57,394 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452170918] [2021-06-05 20:13:57,394 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452170918] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:13:57,394 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:13:57,394 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:13:57,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638650140] [2021-06-05 20:13:57,394 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:13:57,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:13:57,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:13:57,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:13:57,395 INFO L87 Difference]: Start difference. First operand 4646 states and 12451 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:13:58,240 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:13:58,451 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:13:58,637 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:13:58,853 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:13:59,073 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:13:59,450 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:13:59,690 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:14:00,016 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:14:00,220 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:14:00,438 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:14:00,643 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:14:00,840 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:14:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:00,846 INFO L93 Difference]: Finished difference Result 10040 states and 25733 transitions. [2021-06-05 20:14:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:14:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:00,855 INFO L225 Difference]: With dead ends: 10040 [2021-06-05 20:14:00,855 INFO L226 Difference]: Without dead ends: 10040 [2021-06-05 20:14:00,856 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3108.0ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:14:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10040 states. [2021-06-05 20:14:00,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10040 to 4610. [2021-06-05 20:14:00,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4608 states have (on average 2.6786024305555554) internal successors, (12343), 4609 states have internal predecessors, (12343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 12343 transitions. [2021-06-05 20:14:00,935 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 12343 transitions. Word has length 94 [2021-06-05 20:14:00,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:00,935 INFO L482 AbstractCegarLoop]: Abstraction has 4610 states and 12343 transitions. [2021-06-05 20:14:00,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 12343 transitions. [2021-06-05 20:14:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:00,939 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:00,939 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:00,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-06-05 20:14:00,939 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:00,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:00,939 INFO L82 PathProgramCache]: Analyzing trace with hash 409491337, now seen corresponding path program 169 times [2021-06-05 20:14:00,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:00,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425975164] [2021-06-05 20:14:00,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:01,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:01,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425975164] [2021-06-05 20:14:01,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425975164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:01,378 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:01,378 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:01,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415693119] [2021-06-05 20:14:01,378 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:01,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:01,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:01,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:01,378 INFO L87 Difference]: Start difference. First operand 4610 states and 12343 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:02,403 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:02,729 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:02,888 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:14:03,082 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:14:03,283 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:14:03,581 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:14:03,737 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:14:03,890 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:14:04,051 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:14:04,187 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:04,344 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:14:04,512 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:14:04,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:04,521 INFO L93 Difference]: Finished difference Result 8990 states and 22945 transitions. [2021-06-05 20:14:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:04,522 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:04,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:04,530 INFO L225 Difference]: With dead ends: 8990 [2021-06-05 20:14:04,530 INFO L226 Difference]: Without dead ends: 8990 [2021-06-05 20:14:04,530 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2715.8ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:04,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8990 states. [2021-06-05 20:14:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8990 to 4612. [2021-06-05 20:14:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 4610 states have (on average 2.6785249457700653) internal successors, (12348), 4611 states have internal predecessors, (12348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 12348 transitions. [2021-06-05 20:14:04,609 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 12348 transitions. Word has length 94 [2021-06-05 20:14:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:04,609 INFO L482 AbstractCegarLoop]: Abstraction has 4612 states and 12348 transitions. [2021-06-05 20:14:04,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:04,609 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 12348 transitions. [2021-06-05 20:14:04,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:04,613 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:04,613 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:04,613 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-06-05 20:14:04,613 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:04,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:04,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2116940205, now seen corresponding path program 170 times [2021-06-05 20:14:04,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:04,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188055426] [2021-06-05 20:14:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:05,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:05,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188055426] [2021-06-05 20:14:05,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188055426] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:05,103 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:05,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:05,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462291776] [2021-06-05 20:14:05,103 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:05,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:05,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:05,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:05,104 INFO L87 Difference]: Start difference. First operand 4612 states and 12348 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:06,074 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:06,394 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:06,565 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:14:06,749 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:14:06,941 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:14:07,139 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:14:07,447 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:14:07,604 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:14:07,851 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:14:08,133 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:14:08,287 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:08,450 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:14:08,616 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:14:08,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:08,622 INFO L93 Difference]: Finished difference Result 8972 states and 22907 transitions. [2021-06-05 20:14:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:14:08,623 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:08,629 INFO L225 Difference]: With dead ends: 8972 [2021-06-05 20:14:08,629 INFO L226 Difference]: Without dead ends: 8972 [2021-06-05 20:14:08,629 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 3238.0ms TimeCoverageRelationStatistics Valid=572, Invalid=1590, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:14:08,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8972 states. [2021-06-05 20:14:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8972 to 4610. [2021-06-05 20:14:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4608 states have (on average 2.6786024305555554) internal successors, (12343), 4609 states have internal predecessors, (12343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:08,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 12343 transitions. [2021-06-05 20:14:08,704 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 12343 transitions. Word has length 94 [2021-06-05 20:14:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:08,704 INFO L482 AbstractCegarLoop]: Abstraction has 4610 states and 12343 transitions. [2021-06-05 20:14:08,704 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:08,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 12343 transitions. [2021-06-05 20:14:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:08,708 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:08,708 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:08,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-06-05 20:14:08,708 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1441753197, now seen corresponding path program 171 times [2021-06-05 20:14:08,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:08,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094959245] [2021-06-05 20:14:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:09,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:09,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094959245] [2021-06-05 20:14:09,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094959245] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:09,223 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:09,223 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:09,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974859682] [2021-06-05 20:14:09,223 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:09,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:09,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:09,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:09,223 INFO L87 Difference]: Start difference. First operand 4610 states and 12343 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:10,052 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:14:10,244 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:10,430 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 20:14:10,635 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-06-05 20:14:10,809 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:14:11,108 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 20:14:11,532 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2021-06-05 20:14:11,710 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:14:11,921 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2021-06-05 20:14:12,330 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 20:14:12,540 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-06-05 20:14:12,750 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:14:12,970 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2021-06-05 20:14:13,187 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:14:13,409 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2021-06-05 20:14:13,625 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-06-05 20:14:14,304 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:14:14,501 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:14:14,864 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:14:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:14,874 INFO L93 Difference]: Finished difference Result 9345 states and 23936 transitions. [2021-06-05 20:14:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 20:14:14,875 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:14,881 INFO L225 Difference]: With dead ends: 9345 [2021-06-05 20:14:14,881 INFO L226 Difference]: Without dead ends: 9345 [2021-06-05 20:14:14,882 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 5174.3ms TimeCoverageRelationStatistics Valid=773, Invalid=1879, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 20:14:14,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9345 states. [2021-06-05 20:14:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9345 to 4622. [2021-06-05 20:14:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 4620 states have (on average 2.6794372294372293) internal successors, (12379), 4621 states have internal predecessors, (12379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 12379 transitions. [2021-06-05 20:14:14,961 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 12379 transitions. Word has length 94 [2021-06-05 20:14:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:14,961 INFO L482 AbstractCegarLoop]: Abstraction has 4622 states and 12379 transitions. [2021-06-05 20:14:14,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:14,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 12379 transitions. [2021-06-05 20:14:14,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:14,965 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:14,965 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:14,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-06-05 20:14:14,965 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:14,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:14,966 INFO L82 PathProgramCache]: Analyzing trace with hash -403933299, now seen corresponding path program 172 times [2021-06-05 20:14:14,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:14,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084888535] [2021-06-05 20:14:14,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:15,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:15,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:15,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084888535] [2021-06-05 20:14:15,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084888535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:15,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:15,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:15,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697684583] [2021-06-05 20:14:15,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:15,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:15,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:15,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:15,512 INFO L87 Difference]: Start difference. First operand 4622 states and 12379 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:16,354 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:14:16,545 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:16,736 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 20:14:16,940 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 20:14:17,308 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:14:17,502 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:14:17,718 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:14:17,937 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:14:18,325 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 20:14:18,504 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2021-06-05 20:14:18,749 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 20:14:18,922 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:14:19,109 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-06-05 20:14:19,295 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:14:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:19,302 INFO L93 Difference]: Finished difference Result 8514 states and 21855 transitions. [2021-06-05 20:14:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:14:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:19,310 INFO L225 Difference]: With dead ends: 8514 [2021-06-05 20:14:19,310 INFO L226 Difference]: Without dead ends: 8514 [2021-06-05 20:14:19,310 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 3392.5ms TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:14:19,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8514 states. [2021-06-05 20:14:19,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8514 to 4574. [2021-06-05 20:14:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4572 states have (on average 2.676071741032371) internal successors, (12235), 4573 states have internal predecessors, (12235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12235 transitions. [2021-06-05 20:14:19,384 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12235 transitions. Word has length 94 [2021-06-05 20:14:19,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:19,384 INFO L482 AbstractCegarLoop]: Abstraction has 4574 states and 12235 transitions. [2021-06-05 20:14:19,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:19,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12235 transitions. [2021-06-05 20:14:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:19,388 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:19,388 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:19,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-06-05 20:14:19,388 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:19,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:19,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1663508767, now seen corresponding path program 173 times [2021-06-05 20:14:19,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:19,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545235742] [2021-06-05 20:14:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:19,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:19,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545235742] [2021-06-05 20:14:19,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545235742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:19,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:19,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:19,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969866860] [2021-06-05 20:14:19,860 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:19,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:19,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:19,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:19,861 INFO L87 Difference]: Start difference. First operand 4574 states and 12235 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:20,436 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-06-05 20:14:20,981 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-05 20:14:21,144 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:14:21,350 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:14:21,558 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:14:21,770 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:14:22,285 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:14:22,435 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:14:22,673 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:14:22,816 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2021-06-05 20:14:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:22,823 INFO L93 Difference]: Finished difference Result 7817 states and 19924 transitions. [2021-06-05 20:14:22,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:22,824 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:22,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:22,832 INFO L225 Difference]: With dead ends: 7817 [2021-06-05 20:14:22,832 INFO L226 Difference]: Without dead ends: 7817 [2021-06-05 20:14:22,832 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2661.0ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:22,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7817 states. [2021-06-05 20:14:22,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 4576. [2021-06-05 20:14:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.675994752951465) internal successors, (12240), 4575 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:22,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12240 transitions. [2021-06-05 20:14:22,916 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12240 transitions. Word has length 94 [2021-06-05 20:14:22,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:22,916 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12240 transitions. [2021-06-05 20:14:22,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:22,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12240 transitions. [2021-06-05 20:14:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:22,920 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:22,920 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:22,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-06-05 20:14:22,920 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1268018171, now seen corresponding path program 174 times [2021-06-05 20:14:22,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:22,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612302983] [2021-06-05 20:14:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:23,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:23,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612302983] [2021-06-05 20:14:23,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612302983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:23,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:23,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:23,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978700728] [2021-06-05 20:14:23,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:23,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:23,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:23,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:23,467 INFO L87 Difference]: Start difference. First operand 4576 states and 12240 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:24,588 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:14:24,739 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:14:25,086 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:14:25,290 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:14:25,608 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:14:26,199 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:14:26,328 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:14:26,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:26,694 INFO L93 Difference]: Finished difference Result 7891 states and 20018 transitions. [2021-06-05 20:14:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:26,694 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:26,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:26,702 INFO L225 Difference]: With dead ends: 7891 [2021-06-05 20:14:26,702 INFO L226 Difference]: Without dead ends: 7891 [2021-06-05 20:14:26,703 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2756.6ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:26,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7891 states. [2021-06-05 20:14:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7891 to 4580. [2021-06-05 20:14:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4580 states, 4578 states have (on average 2.675840978593272) internal successors, (12250), 4579 states have internal predecessors, (12250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:26,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 12250 transitions. [2021-06-05 20:14:26,807 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 12250 transitions. Word has length 94 [2021-06-05 20:14:26,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:26,808 INFO L482 AbstractCegarLoop]: Abstraction has 4580 states and 12250 transitions. [2021-06-05 20:14:26,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:26,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 12250 transitions. [2021-06-05 20:14:26,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:26,812 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:26,812 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:26,812 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-06-05 20:14:26,813 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:26,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:26,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2125568281, now seen corresponding path program 175 times [2021-06-05 20:14:26,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:26,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979470707] [2021-06-05 20:14:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:27,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:27,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979470707] [2021-06-05 20:14:27,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979470707] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:27,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:27,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:27,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211289010] [2021-06-05 20:14:27,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:27,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:27,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:27,281 INFO L87 Difference]: Start difference. First operand 4580 states and 12250 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:28,395 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:14:28,568 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:28,747 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:14:28,963 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:14:29,199 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:14:29,488 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 20:14:29,653 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 20:14:29,904 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:14:30,147 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 20:14:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:30,278 INFO L93 Difference]: Finished difference Result 7855 states and 19934 transitions. [2021-06-05 20:14:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:30,284 INFO L225 Difference]: With dead ends: 7855 [2021-06-05 20:14:30,284 INFO L226 Difference]: Without dead ends: 7855 [2021-06-05 20:14:30,284 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 2662.0ms TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:30,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7855 states. [2021-06-05 20:14:30,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7855 to 4582. [2021-06-05 20:14:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 4580 states have (on average 2.675764192139738) internal successors, (12255), 4581 states have internal predecessors, (12255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:30,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 12255 transitions. [2021-06-05 20:14:30,355 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 12255 transitions. Word has length 94 [2021-06-05 20:14:30,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:30,355 INFO L482 AbstractCegarLoop]: Abstraction has 4582 states and 12255 transitions. [2021-06-05 20:14:30,355 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:30,355 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 12255 transitions. [2021-06-05 20:14:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:30,359 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:30,359 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:30,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-06-05 20:14:30,360 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:30,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:30,360 INFO L82 PathProgramCache]: Analyzing trace with hash -488385269, now seen corresponding path program 176 times [2021-06-05 20:14:30,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:30,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518429731] [2021-06-05 20:14:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:30,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:30,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518429731] [2021-06-05 20:14:30,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518429731] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:30,861 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:30,861 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:30,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640072228] [2021-06-05 20:14:30,862 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:30,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:30,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:30,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:30,862 INFO L87 Difference]: Start difference. First operand 4582 states and 12255 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:31,999 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:14:32,171 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:32,366 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:14:32,611 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:14:32,845 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:14:33,063 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:14:33,604 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 20:14:33,736 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 20:14:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:34,101 INFO L93 Difference]: Finished difference Result 7653 states and 19530 transitions. [2021-06-05 20:14:34,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:14:34,101 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:34,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:34,108 INFO L225 Difference]: With dead ends: 7653 [2021-06-05 20:14:34,108 INFO L226 Difference]: Without dead ends: 7653 [2021-06-05 20:14:34,108 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 2900.5ms TimeCoverageRelationStatistics Valid=542, Invalid=1620, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:14:34,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7653 states. [2021-06-05 20:14:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7653 to 4576. [2021-06-05 20:14:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4576 states, 4574 states have (on average 2.675994752951465) internal successors, (12240), 4575 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 12240 transitions. [2021-06-05 20:14:34,180 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 12240 transitions. Word has length 94 [2021-06-05 20:14:34,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:34,180 INFO L482 AbstractCegarLoop]: Abstraction has 4576 states and 12240 transitions. [2021-06-05 20:14:34,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 12240 transitions. [2021-06-05 20:14:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:34,185 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:34,185 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:34,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-06-05 20:14:34,185 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:34,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:34,185 INFO L82 PathProgramCache]: Analyzing trace with hash -912294741, now seen corresponding path program 177 times [2021-06-05 20:14:34,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:34,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689192345] [2021-06-05 20:14:34,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:34,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:34,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689192345] [2021-06-05 20:14:34,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689192345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:34,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:34,652 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:34,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31333033] [2021-06-05 20:14:34,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:34,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:34,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:34,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:34,652 INFO L87 Difference]: Start difference. First operand 4576 states and 12240 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:35,534 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:14:35,701 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:36,104 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:36,320 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:14:36,553 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:14:36,772 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:14:37,099 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 20:14:37,252 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 20:14:37,411 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 20:14:37,579 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 20:14:37,729 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:37,901 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2021-06-05 20:14:38,062 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 20:14:38,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:38,069 INFO L93 Difference]: Finished difference Result 9950 states and 25543 transitions. [2021-06-05 20:14:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:38,070 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:38,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:38,080 INFO L225 Difference]: With dead ends: 9950 [2021-06-05 20:14:38,080 INFO L226 Difference]: Without dead ends: 9950 [2021-06-05 20:14:38,080 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 2991.8ms TimeCoverageRelationStatistics Valid=539, Invalid=1531, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9950 states. [2021-06-05 20:14:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9950 to 4720. [2021-06-05 20:14:38,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4718 states have (on average 2.685883849088597) internal successors, (12672), 4719 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:38,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 12672 transitions. [2021-06-05 20:14:38,175 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 12672 transitions. Word has length 94 [2021-06-05 20:14:38,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:38,175 INFO L482 AbstractCegarLoop]: Abstraction has 4720 states and 12672 transitions. [2021-06-05 20:14:38,175 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:38,175 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 12672 transitions. [2021-06-05 20:14:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:38,180 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:38,180 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:38,180 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-06-05 20:14:38,180 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:38,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:38,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1197613909, now seen corresponding path program 178 times [2021-06-05 20:14:38,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:38,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560943869] [2021-06-05 20:14:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:38,753 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:38,753 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560943869] [2021-06-05 20:14:38,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560943869] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:38,754 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:38,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:38,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009894964] [2021-06-05 20:14:38,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:38,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:38,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:38,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:38,754 INFO L87 Difference]: Start difference. First operand 4720 states and 12672 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:39,873 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:40,106 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:14:40,463 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:14:40,877 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:14:41,090 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:14:41,401 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:14:41,581 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:14:41,761 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:14:41,989 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 20:14:42,149 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:14:42,322 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 20:14:42,532 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2021-06-05 20:14:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:42,540 INFO L93 Difference]: Finished difference Result 11002 states and 28116 transitions. [2021-06-05 20:14:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:42,541 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:42,550 INFO L225 Difference]: With dead ends: 11002 [2021-06-05 20:14:42,550 INFO L226 Difference]: Without dead ends: 11002 [2021-06-05 20:14:42,550 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3382.0ms TimeCoverageRelationStatistics Valid=554, Invalid=1516, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11002 states. [2021-06-05 20:14:42,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11002 to 4756. [2021-06-05 20:14:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4756 states, 4754 states have (on average 2.6882625157761884) internal successors, (12780), 4755 states have internal predecessors, (12780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4756 states to 4756 states and 12780 transitions. [2021-06-05 20:14:42,641 INFO L78 Accepts]: Start accepts. Automaton has 4756 states and 12780 transitions. Word has length 94 [2021-06-05 20:14:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:42,641 INFO L482 AbstractCegarLoop]: Abstraction has 4756 states and 12780 transitions. [2021-06-05 20:14:42,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4756 states and 12780 transitions. [2021-06-05 20:14:42,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:42,645 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:42,646 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:42,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-06-05 20:14:42,646 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:42,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:42,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1487719287, now seen corresponding path program 179 times [2021-06-05 20:14:42,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:42,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498421688] [2021-06-05 20:14:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:43,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:43,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498421688] [2021-06-05 20:14:43,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498421688] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:43,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:43,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:43,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989986015] [2021-06-05 20:14:43,321 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:43,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:43,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:43,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:43,322 INFO L87 Difference]: Start difference. First operand 4756 states and 12780 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:44,184 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 20:14:44,354 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:44,583 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:14:44,804 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 20:14:45,014 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 20:14:45,405 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:14:45,599 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:14:45,919 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 20:14:46,109 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2021-06-05 20:14:46,306 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 20:14:46,496 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 20:14:46,685 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:14:46,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:46,692 INFO L93 Difference]: Finished difference Result 10690 states and 27532 transitions. [2021-06-05 20:14:46,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 20:14:46,692 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:46,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:46,702 INFO L225 Difference]: With dead ends: 10690 [2021-06-05 20:14:46,702 INFO L226 Difference]: Without dead ends: 10690 [2021-06-05 20:14:46,702 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3029.0ms TimeCoverageRelationStatistics Valid=536, Invalid=1444, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 20:14:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10690 states. [2021-06-05 20:14:46,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10690 to 4648. [2021-06-05 20:14:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4646 states have (on average 2.6810159276797245) internal successors, (12456), 4647 states have internal predecessors, (12456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:46,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 12456 transitions. [2021-06-05 20:14:46,787 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 12456 transitions. Word has length 94 [2021-06-05 20:14:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:46,787 INFO L482 AbstractCegarLoop]: Abstraction has 4648 states and 12456 transitions. [2021-06-05 20:14:46,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 12456 transitions. [2021-06-05 20:14:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:46,791 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:46,791 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:46,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-06-05 20:14:46,791 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:46,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1050033615, now seen corresponding path program 180 times [2021-06-05 20:14:46,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:46,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816822671] [2021-06-05 20:14:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:47,236 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:47,236 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816822671] [2021-06-05 20:14:47,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816822671] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:47,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:47,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:47,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008694645] [2021-06-05 20:14:47,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:47,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:47,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:47,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:47,237 INFO L87 Difference]: Start difference. First operand 4648 states and 12456 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:48,341 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:14:48,479 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2021-06-05 20:14:48,663 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:14:48,858 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:14:49,063 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:14:49,332 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:14:49,469 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:14:49,604 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:14:49,753 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:14:49,878 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:14:50,016 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:14:50,161 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:14:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:50,170 INFO L93 Difference]: Finished difference Result 10468 states and 26731 transitions. [2021-06-05 20:14:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:50,170 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:50,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:50,179 INFO L225 Difference]: With dead ends: 10468 [2021-06-05 20:14:50,179 INFO L226 Difference]: Without dead ends: 10468 [2021-06-05 20:14:50,179 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2621.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:50,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2021-06-05 20:14:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 4652. [2021-06-05 20:14:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4652 states, 4650 states have (on average 2.6808602150537633) internal successors, (12466), 4651 states have internal predecessors, (12466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 12466 transitions. [2021-06-05 20:14:50,273 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 12466 transitions. Word has length 94 [2021-06-05 20:14:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:50,273 INFO L482 AbstractCegarLoop]: Abstraction has 4652 states and 12466 transitions. [2021-06-05 20:14:50,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 12466 transitions. [2021-06-05 20:14:50,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:50,277 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:50,277 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:50,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-06-05 20:14:50,278 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:50,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:50,278 INFO L82 PathProgramCache]: Analyzing trace with hash 116887493, now seen corresponding path program 181 times [2021-06-05 20:14:50,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:50,278 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025986694] [2021-06-05 20:14:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:50,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:50,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025986694] [2021-06-05 20:14:50,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025986694] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:50,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:50,746 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:50,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544111481] [2021-06-05 20:14:50,746 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:50,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:50,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:50,746 INFO L87 Difference]: Start difference. First operand 4652 states and 12466 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:51,966 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:52,123 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2021-06-05 20:14:52,321 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 20:14:52,519 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 20:14:52,936 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:14:53,069 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:14:53,213 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:14:53,468 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:14:53,613 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:14:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:53,622 INFO L93 Difference]: Finished difference Result 10630 states and 27046 transitions. [2021-06-05 20:14:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 20:14:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:53,630 INFO L225 Difference]: With dead ends: 10630 [2021-06-05 20:14:53,630 INFO L226 Difference]: Without dead ends: 10630 [2021-06-05 20:14:53,630 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2599.0ms TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 20:14:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10630 states. [2021-06-05 20:14:53,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10630 to 4654. [2021-06-05 20:14:53,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 4652 states have (on average 2.6807824591573515) internal successors, (12471), 4653 states have internal predecessors, (12471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 12471 transitions. [2021-06-05 20:14:53,707 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 12471 transitions. Word has length 94 [2021-06-05 20:14:53,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:53,707 INFO L482 AbstractCegarLoop]: Abstraction has 4654 states and 12471 transitions. [2021-06-05 20:14:53,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:53,708 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 12471 transitions. [2021-06-05 20:14:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:53,711 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:53,711 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:53,711 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-06-05 20:14:53,712 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:53,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1797901239, now seen corresponding path program 182 times [2021-06-05 20:14:53,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:53,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379026377] [2021-06-05 20:14:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:54,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:54,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379026377] [2021-06-05 20:14:54,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379026377] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:54,173 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:54,173 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:54,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733266714] [2021-06-05 20:14:54,174 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:54,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:54,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:54,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:54,174 INFO L87 Difference]: Start difference. First operand 4654 states and 12471 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:55,288 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2021-06-05 20:14:55,439 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 20:14:55,621 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2021-06-05 20:14:55,807 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2021-06-05 20:14:55,976 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2021-06-05 20:14:56,172 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 20:14:56,491 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 20:14:56,625 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2021-06-05 20:14:56,758 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 20:14:56,897 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2021-06-05 20:14:57,149 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2021-06-05 20:14:57,290 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 20:14:57,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 20:14:57,297 INFO L93 Difference]: Finished difference Result 10428 states and 26642 transitions. [2021-06-05 20:14:57,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 20:14:57,298 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-06-05 20:14:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 20:14:57,307 INFO L225 Difference]: With dead ends: 10428 [2021-06-05 20:14:57,307 INFO L226 Difference]: Without dead ends: 10428 [2021-06-05 20:14:57,307 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 2771.0ms TimeCoverageRelationStatistics Valid=557, Invalid=1605, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 20:14:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10428 states. [2021-06-05 20:14:57,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10428 to 4648. [2021-06-05 20:14:57,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4646 states have (on average 2.6810159276797245) internal successors, (12456), 4647 states have internal predecessors, (12456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:57,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 12456 transitions. [2021-06-05 20:14:57,392 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 12456 transitions. Word has length 94 [2021-06-05 20:14:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 20:14:57,392 INFO L482 AbstractCegarLoop]: Abstraction has 4648 states and 12456 transitions. [2021-06-05 20:14:57,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 12456 transitions. [2021-06-05 20:14:57,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-06-05 20:14:57,396 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 20:14:57,396 INFO L554 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 20:14:57,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-06-05 20:14:57,396 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 20:14:57,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 20:14:57,397 INFO L82 PathProgramCache]: Analyzing trace with hash 2013631911, now seen corresponding path program 183 times [2021-06-05 20:14:57,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 20:14:57,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504467049] [2021-06-05 20:14:57,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 20:14:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 20:14:57,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 20:14:57,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 20:14:57,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504467049] [2021-06-05 20:14:57,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504467049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 20:14:57,853 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 20:14:57,853 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-06-05 20:14:57,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120342012] [2021-06-05 20:14:57,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-05 20:14:57,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 20:14:57,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-05 20:14:57,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2021-06-05 20:14:57,854 INFO L87 Difference]: Start difference. First operand 4648 states and 12456 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 20:14:58,835 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 20:14:59,027 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2021-06-05 20:14:59,405 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2021-06-05 20:14:59,585 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2021-06-05 20:14:59,771 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 20:15:00,080 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 20:15:00,252 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2021-06-05 20:15:00,429 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 20:15:00,604 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 Received shutdown request... [2021-06-05 20:15:00,753 WARN L222 SmtUtils]: Removed 13 from assertion stack [2021-06-05 20:15:00,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 20:15:00,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-06-05 20:15:00,753 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 20:15:00,755 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 20:15:00,756 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 20:15:00,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 08:15:00 BasicIcfg [2021-06-05 20:15:00,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 20:15:00,757 INFO L168 Benchmark]: Toolchain (without parser) took 835333.12 ms. Allocated memory was 316.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 277.0 MB in the beginning and 579.7 MB in the end (delta: -302.7 MB). Peak memory consumption was 765.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:15:00,757 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 316.7 MB. Free memory is still 297.5 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 20:15:00,757 INFO L168 Benchmark]: CACSL2BoogieTranslator took 938.86 ms. Allocated memory is still 316.7 MB. Free memory was 276.8 MB in the beginning and 247.1 MB in the end (delta: 29.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 16.0 GB. [2021-06-05 20:15:00,757 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 316.7 MB. Free memory was 247.1 MB in the beginning and 244.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 20:15:00,757 INFO L168 Benchmark]: Boogie Preprocessor took 56.51 ms. Allocated memory is still 316.7 MB. Free memory was 244.0 MB in the beginning and 241.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 20:15:00,757 INFO L168 Benchmark]: RCFGBuilder took 1060.15 ms. Allocated memory was 316.7 MB in the beginning and 381.7 MB in the end (delta: 65.0 MB). Free memory was 240.8 MB in the beginning and 352.0 MB in the end (delta: -111.2 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.0 GB. [2021-06-05 20:15:00,757 INFO L168 Benchmark]: TraceAbstraction took 833199.14 ms. Allocated memory was 381.7 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 352.0 MB in the beginning and 579.7 MB in the end (delta: -227.7 MB). Peak memory consumption was 773.7 MB. Max. memory is 16.0 GB. [2021-06-05 20:15:00,757 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 316.7 MB. Free memory is still 297.5 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 938.86 ms. Allocated memory is still 316.7 MB. Free memory was 276.8 MB in the beginning and 247.1 MB in the end (delta: 29.7 MB). Peak memory consumption was 60.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 61.41 ms. Allocated memory is still 316.7 MB. Free memory was 247.1 MB in the beginning and 244.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 56.51 ms. Allocated memory is still 316.7 MB. Free memory was 244.0 MB in the beginning and 241.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1060.15 ms. Allocated memory was 316.7 MB in the beginning and 381.7 MB in the end (delta: 65.0 MB). Free memory was 240.8 MB in the beginning and 352.0 MB in the end (delta: -111.2 MB). Peak memory consumption was 43.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 833199.14 ms. Allocated memory was 381.7 MB in the beginning and 1.4 GB in the end (delta: 1.0 GB). Free memory was 352.0 MB in the beginning and 579.7 MB in the end (delta: -227.7 MB). Peak memory consumption was 773.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4648states) and FLOYD_HOARE automaton (currently 23 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 119ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4648states) and FLOYD_HOARE automaton (currently 23 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 119ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4648states) and FLOYD_HOARE automaton (currently 23 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 119ms.. - TimeoutResultAtElement [Line: 1675]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4648states) and FLOYD_HOARE automaton (currently 23 states, 25 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 119ms.. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 4 procedures, 148 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 833029.1ms, OverallIterations: 192, TraceHistogramMax: 1, EmptinessCheckTime: 907.8ms, AutomataDifference: 710663.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 250.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56188 SDtfs, 192842 SDslu, 563198 SDs, 0 SdLazy, 254632 SolverSat, 12739 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125369.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9653 GetRequests, 579 SyntacticMatches, 202 SemanticMatches, 8871 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51839 ImplicationChecksByTransitivity, 629544.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5115occurred in iteration=0, InterpolantAutomatonStates: 5504, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15000.0ms AutomataMinimizationTime, 191 MinimizatonAttempts, 757097 StatesRemovedByMinimization, 190 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 320.0ms SsaConstructionTime, 2530.9ms SatisfiabilityAnalysisTime, 101598.8ms InterpolantComputationTime, 17934 NumberOfCodeBlocks, 17934 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 17742 ConstructedInterpolants, 0 QuantifiedInterpolants, 279726 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 192 InterpolantComputations, 192 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown