/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/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 00:55:59,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 00:55:59,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 00:55:59,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 00:55:59,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 00:55:59,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 00:55:59,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 00:55:59,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 00:55:59,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 00:55:59,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 00:55:59,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 00:55:59,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 00:55:59,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 00:55:59,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 00:55:59,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 00:55:59,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 00:55:59,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 00:55:59,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 00:55:59,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 00:55:59,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 00:55:59,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 00:55:59,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 00:55:59,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 00:55:59,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 00:55:59,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 00:55:59,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 00:55:59,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 00:55:59,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 00:55:59,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 00:55:59,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 00:55:59,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 00:55:59,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 00:55:59,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 00:55:59,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 00:55:59,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 00:55:59,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 00:55:59,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 00:55:59,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 00:55:59,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 00:55:59,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 00:55:59,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 00:55:59,968 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 00:56:00,004 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 00:56:00,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 00:56:00,005 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 00:56:00,005 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 00:56:00,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 00:56:00,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 00:56:00,008 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 00:56:00,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 00:56:00,008 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 00:56:00,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 00:56:00,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 00:56:00,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 00:56:00,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 00:56:00,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 00:56:00,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 00:56:00,010 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 00:56:00,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 00:56:00,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 00:56:00,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 00:56:00,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 00:56:00,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 00:56:00,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 00:56:00,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 00:56:00,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 00:56:00,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 00:56:00,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 00:56:00,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 00:56:00,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 00:56:00,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 00:56:00,012 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 00:56:00,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 00:56:00,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 00:56:00,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 00:56:00,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 00:56:00,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 00:56:00,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 00:56:00,366 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 00:56:00,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-06-05 00:56:00,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27721b45a/f684a46105ce4eeeb7e7d1149017fe17/FLAGbc9295ba2 [2021-06-05 00:56:01,266 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 00:56:01,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-06-05 00:56:01,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27721b45a/f684a46105ce4eeeb7e7d1149017fe17/FLAGbc9295ba2 [2021-06-05 00:56:01,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27721b45a/f684a46105ce4eeeb7e7d1149017fe17 [2021-06-05 00:56:01,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 00:56:01,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 00:56:01,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 00:56:01,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 00:56:01,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 00:56:01,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:01" (1/1) ... [2021-06-05 00:56:01,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9e5da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:01, skipping insertion in model container [2021-06-05 00:56:01,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:56:01" (1/1) ... [2021-06-05 00:56:01,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 00:56:01,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 00:56:01,992 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-06-05 00:56:02,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:56:02,281 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 00:56:02,289 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-06-05 00:56:02,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:56:02,453 INFO L208 MainTranslator]: Completed translation [2021-06-05 00:56:02,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02 WrapperNode [2021-06-05 00:56:02,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 00:56:02,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 00:56:02,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 00:56:02,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 00:56:02,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 00:56:02,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 00:56:02,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 00:56:02,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 00:56:02,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (1/1) ... [2021-06-05 00:56:02,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 00:56:02,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 00:56:02,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 00:56:02,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 00:56:02,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (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 00:56:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 00:56:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 00:56:02,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 00:56:02,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2021-06-05 00:56:02,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2021-06-05 00:56:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 00:56:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 00:56:02,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 00:56:02,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 00:56:02,625 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 00:56:03,074 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 00:56:03,074 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 00:56:03,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:03 BoogieIcfgContainer [2021-06-05 00:56:03,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 00:56:03,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 00:56:03,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 00:56:03,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 00:56:03,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:56:01" (1/3) ... [2021-06-05 00:56:03,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bc06d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:03, skipping insertion in model container [2021-06-05 00:56:03,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:56:02" (2/3) ... [2021-06-05 00:56:03,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36bc06d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:56:03, skipping insertion in model container [2021-06-05 00:56:03,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:56:03" (3/3) ... [2021-06-05 00:56:03,085 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2021-06-05 00:56:03,090 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 00:56:03,090 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 00:56:03,090 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 00:56:03,091 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 00:56:03,119 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,120 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,120 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,120 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,120 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,120 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,121 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,121 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,121 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,121 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,121 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,144 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,144 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,144 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,145 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,145 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,145 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,145 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,145 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,146 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,146 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,146 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,146 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,146 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,146 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,147 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,147 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,147 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,147 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,147 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,147 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,147 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,148 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,149 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,149 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,150 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,151 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,151 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,151 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,151 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,151 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,151 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,151 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:56:03,157 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 00:56:03,171 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 00:56:03,187 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 00:56:03,187 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 00:56:03,187 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 00:56:03,187 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 00:56:03,187 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 00:56:03,187 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 00:56:03,188 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 00:56:03,188 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 00:56:03,196 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 94 transitions, 196 flow [2021-06-05 00:56:03,216 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 00:56:03,232 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:03,232 INFO L521 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] [2021-06-05 00:56:03,233 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:03,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1922949937, now seen corresponding path program 1 times [2021-06-05 00:56:03,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:03,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989310158] [2021-06-05 00:56:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:03,462 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 00:56:03,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:03,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989310158] [2021-06-05 00:56:03,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989310158] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:56:03,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:56:03,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 00:56:03,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116650636] [2021-06-05 00:56:03,467 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 00:56:03,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:03,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 00:56:03,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 00:56:03,482 INFO L87 Difference]: Start difference. First operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 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 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:03,504 INFO L93 Difference]: Finished difference Result 345 states and 645 transitions. [2021-06-05 00:56:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 00:56:03,505 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-06-05 00:56:03,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:03,516 INFO L225 Difference]: With dead ends: 345 [2021-06-05 00:56:03,516 INFO L226 Difference]: Without dead ends: 297 [2021-06-05 00:56:03,517 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 00:56:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-06-05 00:56:03,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-06-05 00:56:03,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.864864864864865) internal successors, (552), 296 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 552 transitions. [2021-06-05 00:56:03,567 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 552 transitions. Word has length 61 [2021-06-05 00:56:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:03,567 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 552 transitions. [2021-06-05 00:56:03,568 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 552 transitions. [2021-06-05 00:56:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 00:56:03,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:03,571 INFO L521 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] [2021-06-05 00:56:03,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 00:56:03,571 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:03,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:03,572 INFO L82 PathProgramCache]: Analyzing trace with hash 69507375, now seen corresponding path program 1 times [2021-06-05 00:56:03,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:03,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697405370] [2021-06-05 00:56:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:03,679 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 00:56:03,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:03,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697405370] [2021-06-05 00:56:03,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697405370] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:56:03,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:56:03,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 00:56:03,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595918749] [2021-06-05 00:56:03,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 00:56:03,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:03,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 00:56:03,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 00:56:03,682 INFO L87 Difference]: Start difference. First operand 297 states and 552 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:03,715 INFO L93 Difference]: Finished difference Result 357 states and 672 transitions. [2021-06-05 00:56:03,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 00:56:03,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-06-05 00:56:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:03,718 INFO L225 Difference]: With dead ends: 357 [2021-06-05 00:56:03,718 INFO L226 Difference]: Without dead ends: 357 [2021-06-05 00:56:03,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 00:56:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-06-05 00:56:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 312. [2021-06-05 00:56:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.8713826366559485) internal successors, (582), 311 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 582 transitions. [2021-06-05 00:56:03,747 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 582 transitions. Word has length 61 [2021-06-05 00:56:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:03,747 INFO L482 AbstractCegarLoop]: Abstraction has 312 states and 582 transitions. [2021-06-05 00:56:03,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 582 transitions. [2021-06-05 00:56:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-06-05 00:56:03,754 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:03,754 INFO L521 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 00:56:03,754 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 00:56:03,754 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:03,755 INFO L82 PathProgramCache]: Analyzing trace with hash 518804448, now seen corresponding path program 1 times [2021-06-05 00:56:03,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:03,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968363375] [2021-06-05 00:56:03,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:56:03,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:03,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968363375] [2021-06-05 00:56:03,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968363375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:03,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053218829] [2021-06-05 00:56:03,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:03,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-05 00:56:03,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:04,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 00:56:04,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053218829] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:56:04,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 00:56:04,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 00:56:04,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744912067] [2021-06-05 00:56:04,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 00:56:04,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:04,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 00:56:04,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:56:04,128 INFO L87 Difference]: Start difference. First operand 312 states and 582 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:56:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:04,145 INFO L93 Difference]: Finished difference Result 438 states and 834 transitions. [2021-06-05 00:56:04,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 00:56:04,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:56:04,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:04,148 INFO L225 Difference]: With dead ends: 438 [2021-06-05 00:56:04,148 INFO L226 Difference]: Without dead ends: 438 [2021-06-05 00:56:04,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:56:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-06-05 00:56:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 330. [2021-06-05 00:56:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.878419452887538) internal successors, (618), 329 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:04,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 618 transitions. [2021-06-05 00:56:04,166 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 618 transitions. Word has length 66 [2021-06-05 00:56:04,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:04,167 INFO L482 AbstractCegarLoop]: Abstraction has 330 states and 618 transitions. [2021-06-05 00:56:04,167 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 00:56:04,168 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 618 transitions. [2021-06-05 00:56:04,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-06-05 00:56:04,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:04,170 INFO L521 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] [2021-06-05 00:56:04,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-05 00:56:04,383 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:04,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:04,383 INFO L82 PathProgramCache]: Analyzing trace with hash -393434949, now seen corresponding path program 1 times [2021-06-05 00:56:04,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:04,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77817113] [2021-06-05 00:56:04,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 00:56:04,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:04,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77817113] [2021-06-05 00:56:04,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77817113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:04,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219684846] [2021-06-05 00:56:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:04,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 00:56:04,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 00:56:04,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219684846] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:04,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:04,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 00:56:04,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873580372] [2021-06-05 00:56:04,804 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:56:04,805 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:04,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:56:04,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:56:04,806 INFO L87 Difference]: Start difference. First operand 330 states and 618 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:04,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:04,873 INFO L93 Difference]: Finished difference Result 458 states and 874 transitions. [2021-06-05 00:56:04,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 00:56:04,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 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 74 [2021-06-05 00:56:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:04,881 INFO L225 Difference]: With dead ends: 458 [2021-06-05 00:56:04,882 INFO L226 Difference]: Without dead ends: 458 [2021-06-05 00:56:04,883 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 00:56:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-06-05 00:56:04,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 410. [2021-06-05 00:56:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.902200488997555) internal successors, (778), 409 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 778 transitions. [2021-06-05 00:56:04,903 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 778 transitions. Word has length 74 [2021-06-05 00:56:04,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:04,904 INFO L482 AbstractCegarLoop]: Abstraction has 410 states and 778 transitions. [2021-06-05 00:56:04,904 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:04,904 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 778 transitions. [2021-06-05 00:56:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-06-05 00:56:04,909 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:04,910 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:05,110 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:05,111 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:05,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:05,111 INFO L82 PathProgramCache]: Analyzing trace with hash 402363818, now seen corresponding path program 2 times [2021-06-05 00:56:05,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:05,111 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265456923] [2021-06-05 00:56:05,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 00:56:05,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:05,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265456923] [2021-06-05 00:56:05,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265456923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:05,230 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422344966] [2021-06-05 00:56:05,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:05,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 00:56:05,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:05,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 00:56:05,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 00:56:05,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422344966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:05,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:05,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 00:56:05,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714728858] [2021-06-05 00:56:05,540 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:56:05,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:05,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:56:05,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:56:05,541 INFO L87 Difference]: Start difference. First operand 410 states and 778 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:05,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:05,584 INFO L93 Difference]: Finished difference Result 732 states and 1422 transitions. [2021-06-05 00:56:05,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 00:56:05,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 79 [2021-06-05 00:56:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:05,588 INFO L225 Difference]: With dead ends: 732 [2021-06-05 00:56:05,588 INFO L226 Difference]: Without dead ends: 732 [2021-06-05 00:56:05,589 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 00:56:05,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-06-05 00:56:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 594. [2021-06-05 00:56:05,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.9325463743676223) internal successors, (1146), 593 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1146 transitions. [2021-06-05 00:56:05,605 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1146 transitions. Word has length 79 [2021-06-05 00:56:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:05,606 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1146 transitions. [2021-06-05 00:56:05,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1146 transitions. [2021-06-05 00:56:05,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-06-05 00:56:05,608 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:05,608 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:05,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:05,825 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:05,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:05,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1060470651, now seen corresponding path program 3 times [2021-06-05 00:56:05,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:05,826 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704456877] [2021-06-05 00:56:05,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-05 00:56:05,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:05,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704456877] [2021-06-05 00:56:05,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704456877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:05,910 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659456845] [2021-06-05 00:56:05,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:06,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 00:56:06,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:06,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-05 00:56:06,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-05 00:56:06,254 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659456845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:06,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:06,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 00:56:06,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729500198] [2021-06-05 00:56:06,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 00:56:06,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:06,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 00:56:06,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-06-05 00:56:06,256 INFO L87 Difference]: Start difference. First operand 594 states and 1146 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:07,119 INFO L93 Difference]: Finished difference Result 1220 states and 2398 transitions. [2021-06-05 00:56:07,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 00:56:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 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 87 [2021-06-05 00:56:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:07,124 INFO L225 Difference]: With dead ends: 1220 [2021-06-05 00:56:07,124 INFO L226 Difference]: Without dead ends: 1220 [2021-06-05 00:56:07,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 692.5ms TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 00:56:07,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-06-05 00:56:07,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 938. [2021-06-05 00:56:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.9573105656350054) internal successors, (1834), 937 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:07,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1834 transitions. [2021-06-05 00:56:07,147 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1834 transitions. Word has length 87 [2021-06-05 00:56:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:07,147 INFO L482 AbstractCegarLoop]: Abstraction has 938 states and 1834 transitions. [2021-06-05 00:56:07,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 12 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1834 transitions. [2021-06-05 00:56:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-05 00:56:07,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:07,153 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:07,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:07,365 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:07,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:07,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1607478993, now seen corresponding path program 4 times [2021-06-05 00:56:07,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:07,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083632375] [2021-06-05 00:56:07,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 00:56:07,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:07,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083632375] [2021-06-05 00:56:07,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083632375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:07,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190259000] [2021-06-05 00:56:07,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:07,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 00:56:07,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:07,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 00:56:07,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 00:56:07,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190259000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:07,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:07,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 00:56:07,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137824259] [2021-06-05 00:56:07,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 00:56:07,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:07,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 00:56:07,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:56:07,783 INFO L87 Difference]: Start difference. First operand 938 states and 1834 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:07,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:07,866 INFO L93 Difference]: Finished difference Result 1194 states and 2346 transitions. [2021-06-05 00:56:07,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 00:56:07,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 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 100 [2021-06-05 00:56:07,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:07,871 INFO L225 Difference]: With dead ends: 1194 [2021-06-05 00:56:07,872 INFO L226 Difference]: Without dead ends: 1194 [2021-06-05 00:56:07,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-05 00:56:07,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-06-05 00:56:07,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1098. [2021-06-05 00:56:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.9635369188696445) internal successors, (2154), 1097 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 2154 transitions. [2021-06-05 00:56:07,892 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 2154 transitions. Word has length 100 [2021-06-05 00:56:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:07,893 INFO L482 AbstractCegarLoop]: Abstraction has 1098 states and 2154 transitions. [2021-06-05 00:56:07,893 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 2154 transitions. [2021-06-05 00:56:07,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-06-05 00:56:07,895 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:07,895 INFO L521 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:08,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-05 00:56:08,120 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:08,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1071562496, now seen corresponding path program 5 times [2021-06-05 00:56:08,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:08,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796038989] [2021-06-05 00:56:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 00:56:08,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:08,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796038989] [2021-06-05 00:56:08,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796038989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:08,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965738462] [2021-06-05 00:56:08,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:08,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 00:56:08,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:08,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 00:56:08,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 00:56:08,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965738462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:08,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:08,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-05 00:56:08,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409559779] [2021-06-05 00:56:08,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 00:56:08,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:08,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 00:56:08,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-05 00:56:08,487 INFO L87 Difference]: Start difference. First operand 1098 states and 2154 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:08,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:08,586 INFO L93 Difference]: Finished difference Result 1354 states and 2666 transitions. [2021-06-05 00:56:08,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 00:56:08,587 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 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 105 [2021-06-05 00:56:08,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:08,591 INFO L225 Difference]: With dead ends: 1354 [2021-06-05 00:56:08,591 INFO L226 Difference]: Without dead ends: 1354 [2021-06-05 00:56:08,592 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-06-05 00:56:08,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-06-05 00:56:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1258. [2021-06-05 00:56:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1258 states, 1257 states have (on average 1.9681782020684169) internal successors, (2474), 1257 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 2474 transitions. [2021-06-05 00:56:08,615 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 2474 transitions. Word has length 105 [2021-06-05 00:56:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:08,616 INFO L482 AbstractCegarLoop]: Abstraction has 1258 states and 2474 transitions. [2021-06-05 00:56:08,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 2474 transitions. [2021-06-05 00:56:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-06-05 00:56:08,618 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:08,618 INFO L521 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:08,841 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:08,841 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:08,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1117647921, now seen corresponding path program 6 times [2021-06-05 00:56:08,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:08,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887384300] [2021-06-05 00:56:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-05 00:56:08,956 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:08,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887384300] [2021-06-05 00:56:08,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887384300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:08,956 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145322361] [2021-06-05 00:56:08,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:09,085 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 00:56:09,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:09,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 00:56:09,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-05 00:56:09,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145322361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:09,309 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:09,309 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2021-06-05 00:56:09,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402989985] [2021-06-05 00:56:09,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 00:56:09,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:09,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 00:56:09,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 00:56:09,312 INFO L87 Difference]: Start difference. First operand 1258 states and 2474 transitions. Second operand has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:13,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:13,199 INFO L93 Difference]: Finished difference Result 2158 states and 4274 transitions. [2021-06-05 00:56:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2021-06-05 00:56:13,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 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 110 [2021-06-05 00:56:13,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:13,207 INFO L225 Difference]: With dead ends: 2158 [2021-06-05 00:56:13,207 INFO L226 Difference]: Without dead ends: 2158 [2021-06-05 00:56:13,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16756 ImplicationChecksByTransitivity, 3525.4ms TimeCoverageRelationStatistics Valid=7859, Invalid=30361, Unknown=0, NotChecked=0, Total=38220 [2021-06-05 00:56:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-06-05 00:56:13,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1762. [2021-06-05 00:56:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1761 states have (on average 1.9772856331629756) internal successors, (3482), 1761 states have internal predecessors, (3482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:13,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 3482 transitions. [2021-06-05 00:56:13,250 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 3482 transitions. Word has length 110 [2021-06-05 00:56:13,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:13,250 INFO L482 AbstractCegarLoop]: Abstraction has 1762 states and 3482 transitions. [2021-06-05 00:56:13,251 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 6.4) internal successors, (128), 20 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:13,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 3482 transitions. [2021-06-05 00:56:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-06-05 00:56:13,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:13,254 INFO L521 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:13,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:13,473 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:13,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1276635771, now seen corresponding path program 7 times [2021-06-05 00:56:13,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:13,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186703426] [2021-06-05 00:56:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 00:56:13,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:13,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186703426] [2021-06-05 00:56:13,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186703426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:13,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743899450] [2021-06-05 00:56:13,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:13,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 00:56:13,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 00:56:13,939 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743899450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:13,939 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:13,939 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-05 00:56:13,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643108577] [2021-06-05 00:56:13,939 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 00:56:13,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:13,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 00:56:13,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-06-05 00:56:13,940 INFO L87 Difference]: Start difference. First operand 1762 states and 3482 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:14,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:14,140 INFO L93 Difference]: Finished difference Result 2082 states and 4122 transitions. [2021-06-05 00:56:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 00:56:14,141 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 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 123 [2021-06-05 00:56:14,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:14,148 INFO L225 Difference]: With dead ends: 2082 [2021-06-05 00:56:14,148 INFO L226 Difference]: Without dead ends: 2082 [2021-06-05 00:56:14,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 220.2ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-06-05 00:56:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-06-05 00:56:14,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1962. [2021-06-05 00:56:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.979602243753187) internal successors, (3882), 1961 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 3882 transitions. [2021-06-05 00:56:14,190 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 3882 transitions. Word has length 123 [2021-06-05 00:56:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:14,191 INFO L482 AbstractCegarLoop]: Abstraction has 1962 states and 3882 transitions. [2021-06-05 00:56:14,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 3882 transitions. [2021-06-05 00:56:14,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-06-05 00:56:14,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:14,196 INFO L521 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:14,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-05 00:56:14,413 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:14,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:14,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1626379628, now seen corresponding path program 8 times [2021-06-05 00:56:14,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:14,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998563245] [2021-06-05 00:56:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 00:56:14,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:14,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998563245] [2021-06-05 00:56:14,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998563245] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:14,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865776470] [2021-06-05 00:56:14,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:14,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 00:56:14,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:14,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 00:56:14,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 00:56:14,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865776470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:14,876 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:14,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-06-05 00:56:14,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135309582] [2021-06-05 00:56:14,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 00:56:14,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:14,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 00:56:14,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-06-05 00:56:14,877 INFO L87 Difference]: Start difference. First operand 1962 states and 3882 transitions. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:15,088 INFO L93 Difference]: Finished difference Result 2282 states and 4522 transitions. [2021-06-05 00:56:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 00:56:15,089 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 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 128 [2021-06-05 00:56:15,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:15,096 INFO L225 Difference]: With dead ends: 2282 [2021-06-05 00:56:15,096 INFO L226 Difference]: Without dead ends: 2282 [2021-06-05 00:56:15,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 242.1ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 00:56:15,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2021-06-05 00:56:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2162. [2021-06-05 00:56:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2161 states have (on average 1.98149005090236) internal successors, (4282), 2161 states have internal predecessors, (4282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:15,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 4282 transitions. [2021-06-05 00:56:15,133 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 4282 transitions. Word has length 128 [2021-06-05 00:56:15,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:15,133 INFO L482 AbstractCegarLoop]: Abstraction has 2162 states and 4282 transitions. [2021-06-05 00:56:15,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:15,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 4282 transitions. [2021-06-05 00:56:15,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-06-05 00:56:15,138 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:15,138 INFO L521 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:15,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:15,361 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:15,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:15,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1177688347, now seen corresponding path program 9 times [2021-06-05 00:56:15,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:15,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723324058] [2021-06-05 00:56:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-05 00:56:15,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:15,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723324058] [2021-06-05 00:56:15,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723324058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:15,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959989783] [2021-06-05 00:56:15,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:15,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 00:56:15,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:15,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 00:56:15,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-05 00:56:15,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959989783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:15,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:15,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-06-05 00:56:15,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478337123] [2021-06-05 00:56:15,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-05 00:56:15,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:15,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-05 00:56:15,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-06-05 00:56:15,983 INFO L87 Difference]: Start difference. First operand 2162 states and 4282 transitions. Second operand has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:25,901 INFO L93 Difference]: Finished difference Result 3336 states and 6630 transitions. [2021-06-05 00:56:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-06-05 00:56:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 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 133 [2021-06-05 00:56:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:25,910 INFO L225 Difference]: With dead ends: 3336 [2021-06-05 00:56:25,911 INFO L226 Difference]: Without dead ends: 3336 [2021-06-05 00:56:25,926 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66570 ImplicationChecksByTransitivity, 9342.1ms TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-06-05 00:56:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2021-06-05 00:56:25,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2826. [2021-06-05 00:56:25,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2825 states have (on average 1.9858407079646017) internal successors, (5610), 2825 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 5610 transitions. [2021-06-05 00:56:25,978 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 5610 transitions. Word has length 133 [2021-06-05 00:56:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:25,978 INFO L482 AbstractCegarLoop]: Abstraction has 2826 states and 5610 transitions. [2021-06-05 00:56:25,978 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 5.392857142857143) internal successors, (151), 28 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 5610 transitions. [2021-06-05 00:56:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-06-05 00:56:25,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:25,984 INFO L521 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:26,208 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:26,208 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:26,209 INFO L82 PathProgramCache]: Analyzing trace with hash 556479399, now seen corresponding path program 10 times [2021-06-05 00:56:26,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:26,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538175464] [2021-06-05 00:56:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-06-05 00:56:26,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:26,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538175464] [2021-06-05 00:56:26,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538175464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:26,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902733225] [2021-06-05 00:56:26,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:26,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 00:56:26,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:26,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 00:56:26,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-06-05 00:56:26,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902733225] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:26,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:26,749 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-05 00:56:26,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838100294] [2021-06-05 00:56:26,750 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 00:56:26,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:26,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 00:56:26,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-05 00:56:26,751 INFO L87 Difference]: Start difference. First operand 2826 states and 5610 transitions. Second operand has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:27,063 INFO L93 Difference]: Finished difference Result 3210 states and 6378 transitions. [2021-06-05 00:56:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 00:56:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 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 146 [2021-06-05 00:56:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:27,074 INFO L225 Difference]: With dead ends: 3210 [2021-06-05 00:56:27,074 INFO L226 Difference]: Without dead ends: 3210 [2021-06-05 00:56:27,074 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 349.3ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 00:56:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2021-06-05 00:56:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3066. [2021-06-05 00:56:27,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 3065 states have (on average 1.9869494290375205) internal successors, (6090), 3065 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 6090 transitions. [2021-06-05 00:56:27,125 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 6090 transitions. Word has length 146 [2021-06-05 00:56:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:27,125 INFO L482 AbstractCegarLoop]: Abstraction has 3066 states and 6090 transitions. [2021-06-05 00:56:27,126 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.173913043478261) internal successors, (119), 23 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 6090 transitions. [2021-06-05 00:56:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-06-05 00:56:27,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:27,132 INFO L521 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:27,355 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-05 00:56:27,355 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:27,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1605028246, now seen corresponding path program 11 times [2021-06-05 00:56:27,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:27,356 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495165791] [2021-06-05 00:56:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-06-05 00:56:27,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:27,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495165791] [2021-06-05 00:56:27,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495165791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:27,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502863469] [2021-06-05 00:56:27,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:27,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-05 00:56:27,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:27,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-05 00:56:27,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-06-05 00:56:28,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502863469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:28,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:28,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13] total 34 [2021-06-05 00:56:28,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767827123] [2021-06-05 00:56:28,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-06-05 00:56:28,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-06-05 00:56:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 00:56:28,092 INFO L87 Difference]: Start difference. First operand 3066 states and 6090 transitions. Second operand has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:56:46,957 INFO L93 Difference]: Finished difference Result 4444 states and 8846 transitions. [2021-06-05 00:56:46,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 545 states. [2021-06-05 00:56:46,957 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 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 151 [2021-06-05 00:56:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:56:46,969 INFO L225 Difference]: With dead ends: 4444 [2021-06-05 00:56:46,969 INFO L226 Difference]: Without dead ends: 4444 [2021-06-05 00:56:46,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1225 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151458 ImplicationChecksByTransitivity, 18070.0ms TimeCoverageRelationStatistics Valid=57699, Invalid=255341, Unknown=0, NotChecked=0, Total=313040 [2021-06-05 00:56:46,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2021-06-05 00:56:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3850. [2021-06-05 00:56:47,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3850 states, 3849 states have (on average 1.9896076903091713) internal successors, (7658), 3849 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3850 states to 3850 states and 7658 transitions. [2021-06-05 00:56:47,037 INFO L78 Accepts]: Start accepts. Automaton has 3850 states and 7658 transitions. Word has length 151 [2021-06-05 00:56:47,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:56:47,037 INFO L482 AbstractCegarLoop]: Abstraction has 3850 states and 7658 transitions. [2021-06-05 00:56:47,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 4.970588235294118) internal successors, (169), 34 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:56:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3850 states and 7658 transitions. [2021-06-05 00:56:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-06-05 00:56:47,045 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:56:47,045 INFO L521 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:47,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 00:56:47,261 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:56:47,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:56:47,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1225339166, now seen corresponding path program 12 times [2021-06-05 00:56:47,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:56:47,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303131565] [2021-06-05 00:56:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:56:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:56:47,500 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 286 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-06-05 00:56:47,500 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:56:47,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303131565] [2021-06-05 00:56:47,500 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303131565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:47,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319933353] [2021-06-05 00:56:47,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:56:47,615 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-05 00:56:47,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:56:47,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-05 00:56:47,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:56:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2021-06-05 00:56:48,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319933353] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:56:48,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:56:48,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 38 [2021-06-05 00:56:48,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191599339] [2021-06-05 00:56:48,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-06-05 00:56:48,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:56:48,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-06-05 00:56:48,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 00:56:48,003 INFO L87 Difference]: Start difference. First operand 3850 states and 7658 transitions. Second operand has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:57:17,973 INFO L93 Difference]: Finished difference Result 5362 states and 10682 transitions. [2021-06-05 00:57:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 701 states. [2021-06-05 00:57:17,973 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 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 164 [2021-06-05 00:57:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:57:17,980 INFO L225 Difference]: With dead ends: 5362 [2021-06-05 00:57:17,980 INFO L226 Difference]: Without dead ends: 5362 [2021-06-05 00:57:17,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253004 ImplicationChecksByTransitivity, 28825.1ms TimeCoverageRelationStatistics Valid=92780, Invalid=422026, Unknown=0, NotChecked=0, Total=514806 [2021-06-05 00:57:18,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2021-06-05 00:57:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 4714. [2021-06-05 00:57:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4714 states, 4713 states have (on average 1.991512836834288) internal successors, (9386), 4713 states have internal predecessors, (9386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4714 states to 4714 states and 9386 transitions. [2021-06-05 00:57:18,061 INFO L78 Accepts]: Start accepts. Automaton has 4714 states and 9386 transitions. Word has length 164 [2021-06-05 00:57:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:57:18,061 INFO L482 AbstractCegarLoop]: Abstraction has 4714 states and 9386 transitions. [2021-06-05 00:57:18,061 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.7894736842105265) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4714 states and 9386 transitions. [2021-06-05 00:57:18,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-06-05 00:57:18,070 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:57:18,070 INFO L521 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:18,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-05 00:57:18,294 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:57:18,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:57:18,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1616708884, now seen corresponding path program 13 times [2021-06-05 00:57:18,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:57:18,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929119738] [2021-06-05 00:57:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:57:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:57:18,560 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 00:57:18,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:57:18,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929119738] [2021-06-05 00:57:18,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929119738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:57:18,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585302848] [2021-06-05 00:57:18,561 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:57:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:57:18,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 00:57:18,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:57:18,886 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 00:57:18,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585302848] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:57:18,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:57:18,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-05 00:57:18,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273132536] [2021-06-05 00:57:18,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-05 00:57:18,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:57:18,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-05 00:57:18,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-06-05 00:57:18,889 INFO L87 Difference]: Start difference. First operand 4714 states and 9386 transitions. Second operand has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:57:19,303 INFO L93 Difference]: Finished difference Result 5226 states and 10410 transitions. [2021-06-05 00:57:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 00:57:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 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 177 [2021-06-05 00:57:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:57:19,311 INFO L225 Difference]: With dead ends: 5226 [2021-06-05 00:57:19,312 INFO L226 Difference]: Without dead ends: 5226 [2021-06-05 00:57:19,312 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 502.2ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 00:57:19,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5226 states. [2021-06-05 00:57:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5226 to 5034. [2021-06-05 00:57:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5034 states, 5033 states have (on average 1.9920524538048878) internal successors, (10026), 5033 states have internal predecessors, (10026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:19,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5034 states to 5034 states and 10026 transitions. [2021-06-05 00:57:19,388 INFO L78 Accepts]: Start accepts. Automaton has 5034 states and 10026 transitions. Word has length 177 [2021-06-05 00:57:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:57:19,389 INFO L482 AbstractCegarLoop]: Abstraction has 5034 states and 10026 transitions. [2021-06-05 00:57:19,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.620689655172414) internal successors, (134), 29 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 5034 states and 10026 transitions. [2021-06-05 00:57:19,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-06-05 00:57:19,398 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:57:19,398 INFO L521 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:19,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:57:19,621 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:57:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:57:19,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1954781411, now seen corresponding path program 14 times [2021-06-05 00:57:19,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:57:19,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078086304] [2021-06-05 00:57:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:57:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:57:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 00:57:19,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:57:19,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078086304] [2021-06-05 00:57:19,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078086304] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:57:19,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442058164] [2021-06-05 00:57:19,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:57:20,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 00:57:20,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:57:20,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 00:57:20,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:57:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 0 proven. 403 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 00:57:20,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442058164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:57:20,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:57:20,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-05 00:57:20,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116202059] [2021-06-05 00:57:20,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-05 00:57:20,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:57:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-05 00:57:20,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-06-05 00:57:20,291 INFO L87 Difference]: Start difference. First operand 5034 states and 10026 transitions. Second operand has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:57:20,814 INFO L93 Difference]: Finished difference Result 5546 states and 11050 transitions. [2021-06-05 00:57:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 00:57:20,814 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 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 182 [2021-06-05 00:57:20,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:57:20,821 INFO L225 Difference]: With dead ends: 5546 [2021-06-05 00:57:20,821 INFO L226 Difference]: Without dead ends: 5546 [2021-06-05 00:57:20,822 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 585.6ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 00:57:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5546 states. [2021-06-05 00:57:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5546 to 5354. [2021-06-05 00:57:20,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 1.9925275546422567) internal successors, (10666), 5353 states have internal predecessors, (10666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 10666 transitions. [2021-06-05 00:57:20,907 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 10666 transitions. Word has length 182 [2021-06-05 00:57:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:57:20,907 INFO L482 AbstractCegarLoop]: Abstraction has 5354 states and 10666 transitions. [2021-06-05 00:57:20,907 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 10666 transitions. [2021-06-05 00:57:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-06-05 00:57:20,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:57:20,920 INFO L521 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:57:21,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-05 00:57:21,144 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:57:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:57:21,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1102843508, now seen corresponding path program 15 times [2021-06-05 00:57:21,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:57:21,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666826557] [2021-06-05 00:57:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:57:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:57:21,492 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-06-05 00:57:21,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:57:21,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666826557] [2021-06-05 00:57:21,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666826557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:57:21,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105901898] [2021-06-05 00:57:21,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:57:21,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-06-05 00:57:21,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:57:21,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 00:57:21,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:57:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-06-05 00:57:22,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105901898] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:57:22,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:57:22,080 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 46 [2021-06-05 00:57:22,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081008991] [2021-06-05 00:57:22,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-06-05 00:57:22,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:57:22,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-06-05 00:57:22,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1736, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 00:57:22,081 INFO L87 Difference]: Start difference. First operand 5354 states and 10666 transitions. Second operand has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:57:43,320 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-06-05 00:58:21,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:58:21,346 INFO L93 Difference]: Finished difference Result 7140 states and 14238 transitions. [2021-06-05 00:58:21,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2021-06-05 00:58:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 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 187 [2021-06-05 00:58:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:58:21,355 INFO L225 Difference]: With dead ends: 7140 [2021-06-05 00:58:21,355 INFO L226 Difference]: Without dead ends: 7140 [2021-06-05 00:58:21,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2193 GetRequests, 1161 SyntacticMatches, 0 SemanticMatches, 1032 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534325 ImplicationChecksByTransitivity, 56781.3ms TimeCoverageRelationStatistics Valid=187686, Invalid=880436, Unknown=0, NotChecked=0, Total=1068122 [2021-06-05 00:58:21,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-06-05 00:58:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6378. [2021-06-05 00:58:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6377 states have (on average 1.9937274580523758) internal successors, (12714), 6377 states have internal predecessors, (12714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:58:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 12714 transitions. [2021-06-05 00:58:21,483 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 12714 transitions. Word has length 187 [2021-06-05 00:58:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:58:21,483 INFO L482 AbstractCegarLoop]: Abstraction has 6378 states and 12714 transitions. [2021-06-05 00:58:21,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 4.456521739130435) internal successors, (205), 46 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:58:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 12714 transitions. [2021-06-05 00:58:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-06-05 00:58:21,494 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:58:21,494 INFO L521 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:21,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-05 00:58:21,709 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:58:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:58:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash 493157464, now seen corresponding path program 16 times [2021-06-05 00:58:21,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:58:21,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005601727] [2021-06-05 00:58:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:58:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:58:22,110 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-05 00:58:22,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:58:22,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005601727] [2021-06-05 00:58:22,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005601727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:58:22,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270371470] [2021-06-05 00:58:22,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:58:22,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 00:58:22,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:58:22,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 00:58:22,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:58:22,486 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-05 00:58:22,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270371470] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:58:22,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:58:22,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-06-05 00:58:22,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130651271] [2021-06-05 00:58:22,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-05 00:58:22,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:58:22,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-05 00:58:22,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 00:58:22,488 INFO L87 Difference]: Start difference. First operand 6378 states and 12714 transitions. Second operand has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:58:23,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:58:23,050 INFO L93 Difference]: Finished difference Result 6954 states and 13866 transitions. [2021-06-05 00:58:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 00:58:23,050 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 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 200 [2021-06-05 00:58:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:58:23,056 INFO L225 Difference]: With dead ends: 6954 [2021-06-05 00:58:23,057 INFO L226 Difference]: Without dead ends: 6954 [2021-06-05 00:58:23,057 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 745.3ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 00:58:23,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6954 states. [2021-06-05 00:58:23,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6954 to 6738. [2021-06-05 00:58:23,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.9940626391568947) internal successors, (13434), 6737 states have internal predecessors, (13434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:58:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 13434 transitions. [2021-06-05 00:58:23,147 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 13434 transitions. Word has length 200 [2021-06-05 00:58:23,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:58:23,147 INFO L482 AbstractCegarLoop]: Abstraction has 6738 states and 13434 transitions. [2021-06-05 00:58:23,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:58:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 13434 transitions. [2021-06-05 00:58:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-06-05 00:58:23,159 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:58:23,159 INFO L521 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:58:23,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:58:23,385 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:58:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:58:23,385 INFO L82 PathProgramCache]: Analyzing trace with hash -771856121, now seen corresponding path program 17 times [2021-06-05 00:58:23,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:58:23,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989954127] [2021-06-05 00:58:23,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:58:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:58:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-05 00:58:23,801 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:58:23,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989954127] [2021-06-05 00:58:23,801 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989954127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:58:23,801 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135361455] [2021-06-05 00:58:23,802 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:58:23,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-05 00:58:23,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 00:58:23,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 00:58:23,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 00:58:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2021-06-05 00:58:24,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135361455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 00:58:24,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 00:58:24,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 19] total 52 [2021-06-05 00:58:24,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482536] [2021-06-05 00:58:24,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-05 00:58:24,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:58:24,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-05 00:58:24,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=2231, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 00:58:24,433 INFO L87 Difference]: Start difference. First operand 6738 states and 13434 transitions. Second operand has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:59:59,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:59:59,519 INFO L93 Difference]: Finished difference Result 8728 states and 17414 transitions. [2021-06-05 00:59:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1301 states. [2021-06-05 00:59:59,520 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 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 205 [2021-06-05 00:59:59,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:59:59,526 INFO L225 Difference]: With dead ends: 8728 [2021-06-05 00:59:59,526 INFO L226 Difference]: Without dead ends: 8728 [2021-06-05 00:59:59,585 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2785 GetRequests, 1462 SyntacticMatches, 0 SemanticMatches, 1323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886582 ImplicationChecksByTransitivity, 91201.0ms TimeCoverageRelationStatistics Valid=303321, Invalid=1450979, Unknown=0, NotChecked=0, Total=1754300 [2021-06-05 00:59:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2021-06-05 00:59:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 7882. [2021-06-05 00:59:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7882 states, 7881 states have (on average 1.9949245019667554) internal successors, (15722), 7881 states have internal predecessors, (15722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:59:59,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7882 states to 7882 states and 15722 transitions. [2021-06-05 00:59:59,675 INFO L78 Accepts]: Start accepts. Automaton has 7882 states and 15722 transitions. Word has length 205 [2021-06-05 00:59:59,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:59:59,676 INFO L482 AbstractCegarLoop]: Abstraction has 7882 states and 15722 transitions. [2021-06-05 00:59:59,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 4.288461538461538) internal successors, (223), 52 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:59:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 7882 states and 15722 transitions. [2021-06-05 00:59:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-06-05 00:59:59,689 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:59:59,689 INFO L521 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:59,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 00:59:59,905 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:59:59,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:59:59,905 INFO L82 PathProgramCache]: Analyzing trace with hash -522613101, now seen corresponding path program 18 times [2021-06-05 00:59:59,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:59:59,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930853377] [2021-06-05 00:59:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:59:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:00:00,157 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-06-05 01:00:00,603 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 697 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-06-05 01:00:00,603 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:00:00,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930853377] [2021-06-05 01:00:00,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930853377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:00:00,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794112435] [2021-06-05 01:00:00,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:00:00,777 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-06-05 01:00:00,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 01:00:00,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-05 01:00:00,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:00:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-06-05 01:00:01,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794112435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:00:01,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:00:01,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 21] total 56 [2021-06-05 01:00:01,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496904918] [2021-06-05 01:00:01,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-06-05 01:00:01,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:00:01,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-06-05 01:00:01,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2601, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 01:00:01,420 INFO L87 Difference]: Start difference. First operand 7882 states and 15722 transitions. Second operand has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:00:02,895 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-05 01:00:13,010 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-06-05 01:00:27,636 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2021-06-05 01:01:17,379 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-05 01:02:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:02:17,442 INFO L93 Difference]: Finished difference Result 10006 states and 19970 transitions. [2021-06-05 01:02:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1538 states. [2021-06-05 01:02:17,442 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 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 218 [2021-06-05 01:02:17,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:02:17,449 INFO L225 Difference]: With dead ends: 10006 [2021-06-05 01:02:17,449 INFO L226 Difference]: Without dead ends: 10006 [2021-06-05 01:02:17,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3270 GetRequests, 1708 SyntacticMatches, 0 SemanticMatches, 1562 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243135 ImplicationChecksByTransitivity, 131140.7ms TimeCoverageRelationStatistics Valid=418136, Invalid=2026396, Unknown=0, NotChecked=0, Total=2444532 [2021-06-05 01:02:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10006 states. [2021-06-05 01:02:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10006 to 9106. [2021-06-05 01:02:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9106 states, 9105 states have (on average 1.9956068094453596) internal successors, (18170), 9105 states have internal predecessors, (18170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:17,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9106 states to 9106 states and 18170 transitions. [2021-06-05 01:02:17,644 INFO L78 Accepts]: Start accepts. Automaton has 9106 states and 18170 transitions. Word has length 218 [2021-06-05 01:02:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:02:17,645 INFO L482 AbstractCegarLoop]: Abstraction has 9106 states and 18170 transitions. [2021-06-05 01:02:17,645 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 4.214285714285714) internal successors, (236), 56 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9106 states and 18170 transitions. [2021-06-05 01:02:17,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-06-05 01:02:17,658 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:02:17,658 INFO L521 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:17,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:02:17,881 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:02:17,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:02:17,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1286709155, now seen corresponding path program 19 times [2021-06-05 01:02:17,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:02:17,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394772186] [2021-06-05 01:02:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:02:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:02:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 01:02:18,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:02:18,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394772186] [2021-06-05 01:02:18,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394772186] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:02:18,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560276017] [2021-06-05 01:02:18,508 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:02:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:02:18,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-05 01:02:18,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:02:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1153 backedges. 0 proven. 783 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 01:02:18,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560276017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:02:18,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:02:18,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-06-05 01:02:18,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816419986] [2021-06-05 01:02:18,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-05 01:02:18,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:02:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-05 01:02:18,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 01:02:18,909 INFO L87 Difference]: Start difference. First operand 9106 states and 18170 transitions. Second operand has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:02:19,692 INFO L93 Difference]: Finished difference Result 9810 states and 19578 transitions. [2021-06-05 01:02:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 01:02:19,693 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 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 231 [2021-06-05 01:02:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:02:19,701 INFO L225 Difference]: With dead ends: 9810 [2021-06-05 01:02:19,701 INFO L226 Difference]: Without dead ends: 9810 [2021-06-05 01:02:19,702 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 1017.5ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 01:02:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9810 states. [2021-06-05 01:02:19,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9810 to 9546. [2021-06-05 01:02:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9546 states, 9545 states have (on average 1.995809324253536) internal successors, (19050), 9545 states have internal predecessors, (19050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9546 states to 9546 states and 19050 transitions. [2021-06-05 01:02:19,816 INFO L78 Accepts]: Start accepts. Automaton has 9546 states and 19050 transitions. Word has length 231 [2021-06-05 01:02:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:02:19,816 INFO L482 AbstractCegarLoop]: Abstraction has 9546 states and 19050 transitions. [2021-06-05 01:02:19,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 4.0) internal successors, (164), 41 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9546 states and 19050 transitions. [2021-06-05 01:02:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-06-05 01:02:19,827 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:02:19,828 INFO L521 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:20,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-05 01:02:20,051 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:02:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:02:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash 528686542, now seen corresponding path program 20 times [2021-06-05 01:02:20,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:02:20,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663934659] [2021-06-05 01:02:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:02:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:02:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 01:02:20,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:02:20,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663934659] [2021-06-05 01:02:20,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663934659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:02:20,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042561707] [2021-06-05 01:02:20,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:02:20,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 01:02:20,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 01:02:20,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-05 01:02:20,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:02:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1244 backedges. 0 proven. 874 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-06-05 01:02:21,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042561707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:02:21,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:02:21,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-06-05 01:02:21,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086794173] [2021-06-05 01:02:21,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-06-05 01:02:21,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:02:21,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-06-05 01:02:21,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 01:02:21,011 INFO L87 Difference]: Start difference. First operand 9546 states and 19050 transitions. Second operand has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:21,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:02:21,896 INFO L93 Difference]: Finished difference Result 9986 states and 19930 transitions. [2021-06-05 01:02:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 01:02:21,897 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 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 236 [2021-06-05 01:02:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:02:21,904 INFO L225 Difference]: With dead ends: 9986 [2021-06-05 01:02:21,904 INFO L226 Difference]: Without dead ends: 9986 [2021-06-05 01:02:21,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1149.7ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-06-05 01:02:21,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2021-06-05 01:02:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9986. [2021-06-05 01:02:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9986 states, 9985 states have (on average 1.9959939909864797) internal successors, (19930), 9985 states have internal predecessors, (19930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9986 states to 9986 states and 19930 transitions. [2021-06-05 01:02:22,127 INFO L78 Accepts]: Start accepts. Automaton has 9986 states and 19930 transitions. Word has length 236 [2021-06-05 01:02:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:02:22,127 INFO L482 AbstractCegarLoop]: Abstraction has 9986 states and 19930 transitions. [2021-06-05 01:02:22,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 9986 states and 19930 transitions. [2021-06-05 01:02:22,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-06-05 01:02:22,137 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:02:22,138 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:02:22,338 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-05 01:02:22,338 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:02:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:02:22,339 INFO L82 PathProgramCache]: Analyzing trace with hash 2022711037, now seen corresponding path program 21 times [2021-06-05 01:02:22,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:02:22,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966465989] [2021-06-05 01:02:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:02:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:02:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 1340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 01:02:23,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:02:23,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966465989] [2021-06-05 01:02:23,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966465989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:02:23,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104577247] [2021-06-05 01:02:23,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:02:23,257 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-05 01:02:23,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 01:02:23,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-05 01:02:23,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:02:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-06-05 01:02:24,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104577247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:02:24,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:02:24,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 23] total 67 [2021-06-05 01:02:24,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373363061] [2021-06-05 01:02:24,060 INFO L462 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-06-05 01:02:24,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:02:24,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-06-05 01:02:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=3671, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 01:02:24,061 INFO L87 Difference]: Start difference. First operand 9986 states and 19930 transitions. Second operand has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:02:46,614 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-05 01:03:24,494 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-05 01:03:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:03:33,044 INFO L93 Difference]: Finished difference Result 170472 states and 340902 transitions. [2021-06-05 01:03:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1102 states. [2021-06-05 01:03:33,045 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 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 241 [2021-06-05 01:03:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:03:33,242 INFO L225 Difference]: With dead ends: 170472 [2021-06-05 01:03:33,242 INFO L226 Difference]: Without dead ends: 170472 [2021-06-05 01:03:33,286 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2400 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 1123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635937 ImplicationChecksByTransitivity, 60635.7ms TimeCoverageRelationStatistics Valid=255553, Invalid=1008947, Unknown=0, NotChecked=0, Total=1264500 [2021-06-05 01:03:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170472 states. [2021-06-05 01:03:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170472 to 10890. [2021-06-05 01:03:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10890 states, 10889 states have (on average 1.9963265680962439) internal successors, (21738), 10889 states have internal predecessors, (21738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:03:34,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10890 states to 10890 states and 21738 transitions. [2021-06-05 01:03:34,004 INFO L78 Accepts]: Start accepts. Automaton has 10890 states and 21738 transitions. Word has length 241 [2021-06-05 01:03:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:03:34,005 INFO L482 AbstractCegarLoop]: Abstraction has 10890 states and 21738 transitions. [2021-06-05 01:03:34,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 5.507462686567164) internal successors, (369), 67 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:03:34,005 INFO L276 IsEmpty]: Start isEmpty. Operand 10890 states and 21738 transitions. [2021-06-05 01:03:34,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-06-05 01:03:34,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:03:34,014 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:03:34,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:03:34,214 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:03:34,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:03:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash -17430824, now seen corresponding path program 22 times [2021-06-05 01:03:34,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:03:34,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024062008] [2021-06-05 01:03:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:03:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:03:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 1421 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 01:03:35,197 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:03:35,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024062008] [2021-06-05 01:03:35,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024062008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:03:35,197 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980314417] [2021-06-05 01:03:35,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:03:35,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 01:03:35,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 01:03:35,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 01:03:35,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:03:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-06-05 01:03:36,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980314417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:03:36,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:03:36,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 25] total 71 [2021-06-05 01:03:36,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556269617] [2021-06-05 01:03:36,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-05 01:03:36,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:03:36,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-05 01:03:36,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=4148, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 01:03:36,180 INFO L87 Difference]: Start difference. First operand 10890 states and 21738 transitions. Second operand has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:05:19,634 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-06-05 01:05:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:05:20,755 INFO L93 Difference]: Finished difference Result 211585 states and 423128 transitions. [2021-06-05 01:05:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1363 states. [2021-06-05 01:05:20,756 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 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 249 [2021-06-05 01:05:20,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:05:20,971 INFO L225 Difference]: With dead ends: 211585 [2021-06-05 01:05:20,972 INFO L226 Difference]: Without dead ends: 211585 [2021-06-05 01:05:21,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 2928 GetRequests, 1542 SyntacticMatches, 0 SemanticMatches, 1386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983344 ImplicationChecksByTransitivity, 90485.7ms TimeCoverageRelationStatistics Valid=390931, Invalid=1534225, Unknown=0, NotChecked=0, Total=1925156 [2021-06-05 01:05:21,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211585 states. [2021-06-05 01:05:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211585 to 11794. [2021-06-05 01:05:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11794 states, 11793 states have (on average 1.9966081573814976) internal successors, (23546), 11793 states have internal predecessors, (23546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:05:22,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11794 states to 11794 states and 23546 transitions. [2021-06-05 01:05:22,082 INFO L78 Accepts]: Start accepts. Automaton has 11794 states and 23546 transitions. Word has length 249 [2021-06-05 01:05:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:05:22,082 INFO L482 AbstractCegarLoop]: Abstraction has 11794 states and 23546 transitions. [2021-06-05 01:05:22,083 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 5.422535211267606) internal successors, (385), 71 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:05:22,083 INFO L276 IsEmpty]: Start isEmpty. Operand 11794 states and 23546 transitions. [2021-06-05 01:05:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-06-05 01:05:22,095 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:05:22,096 INFO L521 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:05:22,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-06-05 01:05:22,305 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:05:22,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:05:22,305 INFO L82 PathProgramCache]: Analyzing trace with hash -418389069, now seen corresponding path program 23 times [2021-06-05 01:05:22,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:05:22,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283113108] [2021-06-05 01:05:22,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:05:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:05:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 1510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 01:05:23,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:05:23,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283113108] [2021-06-05 01:05:23,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283113108] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:05:23,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143219091] [2021-06-05 01:05:23,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:05:23,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2021-06-05 01:05:23,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 01:05:23,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 01:05:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:05:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1510 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-06-05 01:05:24,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143219091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:05:24,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:05:24,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 27] total 75 [2021-06-05 01:05:24,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237444040] [2021-06-05 01:05:24,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-06-05 01:05:24,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:05:24,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-06-05 01:05:24,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=4653, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 01:05:24,359 INFO L87 Difference]: Start difference. First operand 11794 states and 23546 transitions. Second operand has 75 states, 75 states have (on average 5.346666666666667) internal successors, (401), 75 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-06-05 01:07:42,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1363 states. [2021-06-05 01:07:42,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:07:42,305 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 01:07:42,306 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 01:07:42,307 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 01:07:42,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 01:07:42 BasicIcfg [2021-06-05 01:07:42,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 01:07:42,308 INFO L168 Benchmark]: Toolchain (without parser) took 700533.16 ms. Allocated memory was 390.1 MB in the beginning and 4.9 GB in the end (delta: 4.5 GB). Free memory was 350.9 MB in the beginning and 3.6 GB in the end (delta: -3.3 GB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. [2021-06-05 01:07:42,308 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 390.1 MB. Free memory is still 370.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 01:07:42,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.17 ms. Allocated memory is still 390.1 MB. Free memory was 350.8 MB in the beginning and 302.2 MB in the end (delta: 48.6 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.0 GB. [2021-06-05 01:07:42,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.09 ms. Allocated memory is still 390.1 MB. Free memory was 302.2 MB in the beginning and 300.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 01:07:42,308 INFO L168 Benchmark]: Boogie Preprocessor took 30.95 ms. Allocated memory is still 390.1 MB. Free memory was 300.2 MB in the beginning and 298.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 01:07:42,308 INFO L168 Benchmark]: RCFGBuilder took 522.49 ms. Allocated memory is still 390.1 MB. Free memory was 298.1 MB in the beginning and 270.8 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-05 01:07:42,308 INFO L168 Benchmark]: TraceAbstraction took 699230.51 ms. Allocated memory was 390.1 MB in the beginning and 4.9 GB in the end (delta: 4.5 GB). Free memory was 270.8 MB in the beginning and 3.6 GB in the end (delta: -3.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. [2021-06-05 01:07:42,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 390.1 MB. Free memory is still 370.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 677.17 ms. Allocated memory is still 390.1 MB. Free memory was 350.8 MB in the beginning and 302.2 MB in the end (delta: 48.6 MB). Peak memory consumption was 47.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 62.09 ms. Allocated memory is still 390.1 MB. Free memory was 302.2 MB in the beginning and 300.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.95 ms. Allocated memory is still 390.1 MB. Free memory was 300.2 MB in the beginning and 298.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 522.49 ms. Allocated memory is still 390.1 MB. Free memory was 298.1 MB in the beginning and 270.8 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 699230.51 ms. Allocated memory was 390.1 MB in the beginning and 4.9 GB in the end (delta: 4.5 GB). Free memory was 270.8 MB in the beginning and 3.6 GB in the end (delta: -3.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1336]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (11794states) and FLOYD_HOARE automaton (currently 1363 states, 75 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1405 known predicates. - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (11794states) and FLOYD_HOARE automaton (currently 1363 states, 75 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1405 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 699120.2ms, OverallIterations: 26, TraceHistogramMax: 20, EmptinessCheckTime: 195.4ms, AutomataDifference: 670060.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2758 SDtfs, 166328 SDslu, 44202 SDs, 0 SdLazy, 8116 SolverSat, 29577 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13478.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23372 GetRequests, 13159 SyntacticMatches, 0 SemanticMatches, 10212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5818900 ImplicationChecksByTransitivity, 618964.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=11794occurred in iteration=25, InterpolantAutomatonStates: 8549, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2950.3ms AutomataMinimizationTime, 25 MinimizatonAttempts, 366090 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 692.9ms SsaConstructionTime, 1681.9ms SatisfiabilityAnalysisTime, 16346.9ms InterpolantComputationTime, 7820 NumberOfCodeBlocks, 7715 NumberOfCodeBlocksAsserted, 164 NumberOfCheckSat, 7770 ConstructedInterpolants, 0 QuantifiedInterpolants, 13495 SizeOfPredicates, 370 NumberOfNonLiveVariables, 7996 ConjunctsInSsa, 418 ConjunctsInUnsatCore, 50 InterpolantComputations, 3 PerfectInterpolantSequences, 9574/25480 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