/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/goblint-regression/28-race_reach_06-cond_racing1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 01:38:01,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 01:38:01,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 01:38:01,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-05 01:38:01,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-05 01:38:01,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-05 01:38:01,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-05 01:38:01,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-05 01:38:01,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-05 01:38:01,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-05 01:38:01,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-05 01:38:01,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-05 01:38:01,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 01:38:01,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 01:38:01,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 01:38:01,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 01:38:01,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 01:38:01,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 01:38:01,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 01:38:02,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 01:38:02,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 01:38:02,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 01:38:02,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 01:38:02,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 01:38:02,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-05 01:38:02,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-05 01:38:02,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-05 01:38:02,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-05 01:38:02,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-05 01:38:02,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-05 01:38:02,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-05 01:38:02,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-05 01:38:02,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-05 01:38:02,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-05 01:38:02,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-05 01:38:02,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-05 01:38:02,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-05 01:38:02,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-05 01:38:02,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 01:38:02,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 01:38:02,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 01:38:02,015 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 01:38:02,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 01:38:02,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 01:38:02,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 01:38:02,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 01:38:02,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 01:38:02,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 01:38:02,035 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 01:38:02,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 01:38:02,036 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 01:38:02,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 01:38:02,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 01:38:02,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 01:38:02,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 01:38:02,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 01:38:02,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 01:38:02,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 01:38:02,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 01:38:02,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 01:38:02,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 01:38:02,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 01:38:02,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 01:38:02,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 01:38:02,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 01:38:02,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 01:38:02,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 01:38:02,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 01:38:02,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 01:38:02,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 01:38:02,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 01:38:02,040 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 01:38:02,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 01:38:02,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 01:38:02,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 01:38:02,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 01:38:02,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 01:38:02,396 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 01:38:02,401 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 01:38:02,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2021-06-05 01:38:02,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b7b0226f/f5bec8ba8fd94f9482b6c20b657a10ca/FLAG695a392d4 [2021-06-05 01:38:03,019 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 01:38:03,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2021-06-05 01:38:03,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b7b0226f/f5bec8ba8fd94f9482b6c20b657a10ca/FLAG695a392d4 [2021-06-05 01:38:03,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b7b0226f/f5bec8ba8fd94f9482b6c20b657a10ca [2021-06-05 01:38:03,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 01:38:03,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 01:38:03,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 01:38:03,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 01:38:03,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 01:38:03,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f70a6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03, skipping insertion in model container [2021-06-05 01:38:03,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 01:38:03,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 01:38:03,752 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i[41060,41073] [2021-06-05 01:38:03,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 01:38:03,790 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 01:38:03,815 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i[41060,41073] [2021-06-05 01:38:03,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 01:38:03,920 INFO L208 MainTranslator]: Completed translation [2021-06-05 01:38:03,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03 WrapperNode [2021-06-05 01:38:03,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 01:38:03,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 01:38:03,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 01:38:03,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 01:38:03,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 01:38:03,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 01:38:03,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 01:38:03,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 01:38:03,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (1/1) ... [2021-06-05 01:38:03,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 01:38:03,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 01:38:03,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 01:38:03,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 01:38:03,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (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 01:38:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 01:38:04,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 01:38:04,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-05 01:38:04,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 01:38:04,045 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-05 01:38:04,047 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2021-06-05 01:38:04,047 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2021-06-05 01:38:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 01:38:04,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 01:38:04,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 01:38:04,050 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 01:38:04,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 01:38:04,444 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-06-05 01:38:04,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:38:04 BoogieIcfgContainer [2021-06-05 01:38:04,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 01:38:04,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 01:38:04,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 01:38:04,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 01:38:04,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 01:38:03" (1/3) ... [2021-06-05 01:38:04,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bce2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 01:38:04, skipping insertion in model container [2021-06-05 01:38:04,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 01:38:03" (2/3) ... [2021-06-05 01:38:04,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bce2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 01:38:04, skipping insertion in model container [2021-06-05 01:38:04,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:38:04" (3/3) ... [2021-06-05 01:38:04,451 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2021-06-05 01:38:04,456 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 01:38:04,457 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 01:38:04,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 01:38:04,457 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 01:38:04,479 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,480 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,481 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,481 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,481 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,481 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,481 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,481 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,482 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,482 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,482 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,482 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,482 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,482 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,482 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,483 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,483 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,483 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,483 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,483 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,483 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,483 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,484 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,484 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,484 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,484 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,484 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,484 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,484 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,486 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,486 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,486 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,486 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,487 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,487 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,487 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,487 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,487 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of1ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:04,493 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-05 01:38:04,510 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 01:38:04,525 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 01:38:04,526 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 01:38:04,526 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 01:38:04,526 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 01:38:04,526 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 01:38:04,526 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 01:38:04,526 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 01:38:04,526 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 01:38:04,536 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 118 transitions, 244 flow [2021-06-05 01:38:04,581 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1018 states, 1012 states have (on average 2.308300395256917) internal successors, (2336), 1017 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 1018 states, 1012 states have (on average 2.308300395256917) internal successors, (2336), 1017 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 01:38:04,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:04,593 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] [2021-06-05 01:38:04,593 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:04,597 INFO L82 PathProgramCache]: Analyzing trace with hash 493182100, now seen corresponding path program 1 times [2021-06-05 01:38:04,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:04,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115776249] [2021-06-05 01:38:04,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:04,820 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 01:38:04,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:38:04,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115776249] [2021-06-05 01:38:04,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115776249] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:38:04,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 01:38:04,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 01:38:04,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644195400] [2021-06-05 01:38:04,825 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 01:38:04,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:38:04,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 01:38:04,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 01:38:04,840 INFO L87 Difference]: Start difference. First operand has 1018 states, 1012 states have (on average 2.308300395256917) internal successors, (2336), 1017 states have internal predecessors, (2336), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:38:04,886 INFO L93 Difference]: Finished difference Result 994 states and 1924 transitions. [2021-06-05 01:38:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 01:38:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 01:38:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:38:04,907 INFO L225 Difference]: With dead ends: 994 [2021-06-05 01:38:04,907 INFO L226 Difference]: Without dead ends: 630 [2021-06-05 01:38:04,913 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 01:38:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-06-05 01:38:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2021-06-05 01:38:04,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 627 states have (on average 1.8835725677830941) internal successors, (1181), 629 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1181 transitions. [2021-06-05 01:38:04,980 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1181 transitions. Word has length 48 [2021-06-05 01:38:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:38:04,980 INFO L482 AbstractCegarLoop]: Abstraction has 630 states and 1181 transitions. [2021-06-05 01:38:04,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1181 transitions. [2021-06-05 01:38:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 01:38:04,982 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:04,982 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] [2021-06-05 01:38:04,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 01:38:04,983 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:04,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:04,984 INFO L82 PathProgramCache]: Analyzing trace with hash 622264819, now seen corresponding path program 1 times [2021-06-05 01:38:04,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:04,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093929907] [2021-06-05 01:38:04,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:05,060 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 01:38:05,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:38:05,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093929907] [2021-06-05 01:38:05,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093929907] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:38:05,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 01:38:05,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 01:38:05,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113170423] [2021-06-05 01:38:05,063 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 01:38:05,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:38:05,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 01:38:05,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 01:38:05,064 INFO L87 Difference]: Start difference. First operand 630 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:38:05,089 INFO L93 Difference]: Finished difference Result 616 states and 1166 transitions. [2021-06-05 01:38:05,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 01:38:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 01:38:05,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:38:05,095 INFO L225 Difference]: With dead ends: 616 [2021-06-05 01:38:05,095 INFO L226 Difference]: Without dead ends: 616 [2021-06-05 01:38:05,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 01:38:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-06-05 01:38:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-06-05 01:38:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 614 states have (on average 1.8990228013029316) internal successors, (1166), 615 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:05,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1166 transitions. [2021-06-05 01:38:05,135 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1166 transitions. Word has length 48 [2021-06-05 01:38:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:38:05,136 INFO L482 AbstractCegarLoop]: Abstraction has 616 states and 1166 transitions. [2021-06-05 01:38:05,136 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1166 transitions. [2021-06-05 01:38:05,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 01:38:05,142 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:05,142 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-06-05 01:38:05,142 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 01:38:05,142 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:05,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash -693021782, now seen corresponding path program 1 times [2021-06-05 01:38:05,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:05,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779159159] [2021-06-05 01:38:05,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 01:38:05,213 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 01:38:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 01:38:05,233 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 01:38:05,291 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 01:38:05,292 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 01:38:05,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 01:38:05,293 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 01:38:05,293 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 01:38:05,303 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,303 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,304 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,304 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,304 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,304 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,304 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,304 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,305 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,305 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,305 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,305 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,305 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,305 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,305 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,306 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,306 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,306 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,306 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,306 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,306 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,306 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,307 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,308 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,308 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,308 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,308 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,308 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,308 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,309 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,310 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,311 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,312 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,312 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,312 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,312 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,312 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,312 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,312 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,313 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,313 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,313 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,313 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,313 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,314 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,314 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,314 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,314 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,314 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,314 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,315 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,316 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of2ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:05,319 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 01:38:05,320 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 01:38:05,321 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 01:38:05,321 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 01:38:05,321 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 01:38:05,321 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 01:38:05,321 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 01:38:05,321 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 01:38:05,321 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 01:38:05,322 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 01:38:05,324 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 131 places, 148 transitions, 314 flow [2021-06-05 01:38:06,743 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 23075 states, 23066 states have (on average 3.5299575132229255) internal successors, (81422), 23074 states have internal predecessors, (81422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:06,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 23075 states, 23066 states have (on average 3.5299575132229255) internal successors, (81422), 23074 states have internal predecessors, (81422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 01:38:06,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:06,797 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] [2021-06-05 01:38:06,797 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:06,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1886558356, now seen corresponding path program 1 times [2021-06-05 01:38:06,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:06,801 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438978285] [2021-06-05 01:38:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:06,908 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 01:38:06,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:38:06,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438978285] [2021-06-05 01:38:06,909 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438978285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:38:06,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 01:38:06,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 01:38:06,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501751289] [2021-06-05 01:38:06,910 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 01:38:06,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:38:06,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 01:38:06,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 01:38:06,950 INFO L87 Difference]: Start difference. First operand has 23075 states, 23066 states have (on average 3.5299575132229255) internal successors, (81422), 23074 states have internal predecessors, (81422), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:07,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:38:07,266 INFO L93 Difference]: Finished difference Result 22522 states and 65389 transitions. [2021-06-05 01:38:07,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 01:38:07,266 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 01:38:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:38:07,343 INFO L225 Difference]: With dead ends: 22522 [2021-06-05 01:38:07,343 INFO L226 Difference]: Without dead ends: 13832 [2021-06-05 01:38:07,344 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 01:38:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13832 states. [2021-06-05 01:38:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13832 to 13832. [2021-06-05 01:38:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13832 states, 13828 states have (on average 2.86982933179057) internal successors, (39684), 13831 states have internal predecessors, (39684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:08,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13832 states to 13832 states and 39684 transitions. [2021-06-05 01:38:08,010 INFO L78 Accepts]: Start accepts. Automaton has 13832 states and 39684 transitions. Word has length 48 [2021-06-05 01:38:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:38:08,010 INFO L482 AbstractCegarLoop]: Abstraction has 13832 states and 39684 transitions. [2021-06-05 01:38:08,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:08,011 INFO L276 IsEmpty]: Start isEmpty. Operand 13832 states and 39684 transitions. [2021-06-05 01:38:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 01:38:08,011 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:08,012 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] [2021-06-05 01:38:08,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 01:38:08,012 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:08,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2015641075, now seen corresponding path program 1 times [2021-06-05 01:38:08,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:08,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666511695] [2021-06-05 01:38:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:08,078 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 01:38:08,078 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:38:08,078 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666511695] [2021-06-05 01:38:08,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666511695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:38:08,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 01:38:08,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 01:38:08,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214211129] [2021-06-05 01:38:08,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 01:38:08,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:38:08,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 01:38:08,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 01:38:08,081 INFO L87 Difference]: Start difference. First operand 13832 states and 39684 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:38:08,287 INFO L93 Difference]: Finished difference Result 13818 states and 39669 transitions. [2021-06-05 01:38:08,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 01:38:08,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 01:38:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:38:08,346 INFO L225 Difference]: With dead ends: 13818 [2021-06-05 01:38:08,346 INFO L226 Difference]: Without dead ends: 13818 [2021-06-05 01:38:08,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 01:38:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13818 states. [2021-06-05 01:38:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13818 to 13818. [2021-06-05 01:38:08,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13818 states, 13815 states have (on average 2.8714440825190013) internal successors, (39669), 13817 states have internal predecessors, (39669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13818 states to 13818 states and 39669 transitions. [2021-06-05 01:38:08,962 INFO L78 Accepts]: Start accepts. Automaton has 13818 states and 39669 transitions. Word has length 48 [2021-06-05 01:38:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:38:08,962 INFO L482 AbstractCegarLoop]: Abstraction has 13818 states and 39669 transitions. [2021-06-05 01:38:08,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 13818 states and 39669 transitions. [2021-06-05 01:38:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 01:38:08,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:08,965 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] [2021-06-05 01:38:08,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 01:38:08,965 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:08,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1320673466, now seen corresponding path program 1 times [2021-06-05 01:38:08,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:08,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616761493] [2021-06-05 01:38:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:09,031 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 01:38:09,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:38:09,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616761493] [2021-06-05 01:38:09,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616761493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:38:09,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705638745] [2021-06-05 01:38:09,032 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 01:38:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:09,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-05 01:38:09,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:38:09,324 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 01:38:09,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705638745] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:38:09,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 01:38:09,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 01:38:09,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652693929] [2021-06-05 01:38:09,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 01:38:09,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:38:09,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 01:38:09,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 01:38:09,326 INFO L87 Difference]: Start difference. First operand 13818 states and 39669 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:09,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:38:09,383 INFO L93 Difference]: Finished difference Result 14922 states and 42289 transitions. [2021-06-05 01:38:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 01:38:09,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-06-05 01:38:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:38:09,417 INFO L225 Difference]: With dead ends: 14922 [2021-06-05 01:38:09,417 INFO L226 Difference]: Without dead ends: 13818 [2021-06-05 01:38:09,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 01:38:09,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13818 states. [2021-06-05 01:38:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13818 to 13818. [2021-06-05 01:38:09,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13818 states, 13815 states have (on average 2.831487513572204) internal successors, (39117), 13817 states have internal predecessors, (39117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:09,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13818 states to 13818 states and 39117 transitions. [2021-06-05 01:38:09,880 INFO L78 Accepts]: Start accepts. Automaton has 13818 states and 39117 transitions. Word has length 58 [2021-06-05 01:38:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:38:09,882 INFO L482 AbstractCegarLoop]: Abstraction has 13818 states and 39117 transitions. [2021-06-05 01:38:09,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:09,882 INFO L276 IsEmpty]: Start isEmpty. Operand 13818 states and 39117 transitions. [2021-06-05 01:38:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 01:38:09,884 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:09,884 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] [2021-06-05 01:38:10,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-05 01:38:10,085 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:10,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:10,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1040834599, now seen corresponding path program 1 times [2021-06-05 01:38:10,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:10,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452695217] [2021-06-05 01:38:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:10,127 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 01:38:10,127 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:38:10,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452695217] [2021-06-05 01:38:10,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452695217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:38:10,127 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483561760] [2021-06-05 01:38:10,127 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 01:38:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:38:10,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 01:38:10,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:38:10,385 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 01:38:10,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483561760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:38:10,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:38:10,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 01:38:10,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135524778] [2021-06-05 01:38:10,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 01:38:10,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:38:10,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 01:38:10,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 01:38:10,387 INFO L87 Difference]: Start difference. First operand 13818 states and 39117 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:38:10,604 INFO L93 Difference]: Finished difference Result 13496 states and 38487 transitions. [2021-06-05 01:38:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 01:38:10,605 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 60 [2021-06-05 01:38:10,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:38:10,631 INFO L225 Difference]: With dead ends: 13496 [2021-06-05 01:38:10,631 INFO L226 Difference]: Without dead ends: 13496 [2021-06-05 01:38:10,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 01:38:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13496 states. [2021-06-05 01:38:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13496 to 13496. [2021-06-05 01:38:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13496 states, 13494 states have (on average 2.852156514006225) internal successors, (38487), 13495 states have internal predecessors, (38487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:11,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13496 states to 13496 states and 38487 transitions. [2021-06-05 01:38:11,130 INFO L78 Accepts]: Start accepts. Automaton has 13496 states and 38487 transitions. Word has length 60 [2021-06-05 01:38:11,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:38:11,131 INFO L482 AbstractCegarLoop]: Abstraction has 13496 states and 38487 transitions. [2021-06-05 01:38:11,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:38:11,131 INFO L276 IsEmpty]: Start isEmpty. Operand 13496 states and 38487 transitions. [2021-06-05 01:38:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 01:38:11,133 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:38:11,133 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-06-05 01:38:11,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:38:11,357 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:38:11,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:38:11,358 INFO L82 PathProgramCache]: Analyzing trace with hash 205564304, now seen corresponding path program 1 times [2021-06-05 01:38:11,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:38:11,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765480904] [2021-06-05 01:38:11,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:38:11,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 01:38:11,384 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 01:38:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 01:38:11,409 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 01:38:11,425 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 01:38:11,425 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 01:38:11,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 01:38:11,425 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 01:38:11,425 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-06-05 01:38:11,440 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,440 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,440 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,441 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,442 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,442 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,442 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,442 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,442 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,442 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,442 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,443 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,444 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,444 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,445 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,445 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,445 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,445 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,445 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,445 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,446 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,446 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,446 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,446 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,448 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,448 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,448 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,448 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,448 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,449 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,449 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,449 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,450 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,450 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,450 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,450 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,450 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,450 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,450 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,451 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,455 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,455 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,456 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,457 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,457 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,457 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,457 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,457 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,458 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,459 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,460 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,461 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,461 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,461 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,461 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,463 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,463 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,463 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,463 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,463 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,463 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,463 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,464 WARN L313 ript$VariableManager]: TermVariabe |t_funThread1of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,464 WARN L313 ript$VariableManager]: TermVariabe t_funThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,465 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,465 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,465 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,466 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,466 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,466 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,466 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,466 WARN L313 ript$VariableManager]: TermVariabe |t_funThread2of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,466 WARN L313 ript$VariableManager]: TermVariabe t_funThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,468 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,468 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,468 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post35| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,468 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,468 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~nondet33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,468 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#t~post37| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,468 WARN L313 ript$VariableManager]: TermVariabe |t_funThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,469 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,469 WARN L313 ript$VariableManager]: TermVariabe t_funThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 01:38:11,474 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 01:38:11,475 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 01:38:11,476 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 01:38:11,476 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 01:38:11,477 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 01:38:11,477 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 01:38:11,477 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 01:38:11,477 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 01:38:11,477 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 01:38:11,477 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 01:38:11,482 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 156 places, 178 transitions, 386 flow [2021-06-05 01:46:30,603 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 537562 states, 537548 states have (on average 4.730515228407509) internal successors, (2542879), 537561 states have internal predecessors, (2542879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:46:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand has 537562 states, 537548 states have (on average 4.730515228407509) internal successors, (2542879), 537561 states have internal predecessors, (2542879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:46:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 01:46:31,181 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:46:31,181 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] [2021-06-05 01:46:31,181 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:46:31,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:46:31,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1022792044, now seen corresponding path program 1 times [2021-06-05 01:46:31,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:46:31,182 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387473061] [2021-06-05 01:46:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:46:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:46:31,201 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 01:46:31,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:46:31,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387473061] [2021-06-05 01:46:31,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387473061] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:46:31,201 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 01:46:31,201 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-05 01:46:31,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054633779] [2021-06-05 01:46:31,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-05 01:46:31,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:46:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-05 01:46:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-05 01:46:31,801 INFO L87 Difference]: Start difference. First operand has 537562 states, 537548 states have (on average 4.730515228407509) internal successors, (2542879), 537561 states have internal predecessors, (2542879), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:46:38,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:46:38,731 INFO L93 Difference]: Finished difference Result 524842 states and 2019365 transitions. [2021-06-05 01:46:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-05 01:46:38,731 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 01:46:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:46:41,757 INFO L225 Difference]: With dead ends: 524842 [2021-06-05 01:46:41,757 INFO L226 Difference]: Without dead ends: 317478 [2021-06-05 01:46:41,757 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 01:47:22,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317478 states. [2021-06-05 01:47:29,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317478 to 317478. [2021-06-05 01:47:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317478 states, 317473 states have (on average 3.829292569761838) internal successors, (1215697), 317477 states have internal predecessors, (1215697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:47:32,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317478 states to 317478 states and 1215697 transitions. [2021-06-05 01:47:32,152 INFO L78 Accepts]: Start accepts. Automaton has 317478 states and 1215697 transitions. Word has length 48 [2021-06-05 01:47:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:47:32,152 INFO L482 AbstractCegarLoop]: Abstraction has 317478 states and 1215697 transitions. [2021-06-05 01:47:32,152 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:47:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 317478 states and 1215697 transitions. [2021-06-05 01:47:32,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 01:47:32,153 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:47:32,153 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] [2021-06-05 01:47:32,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 01:47:32,153 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:47:32,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:47:32,154 INFO L82 PathProgramCache]: Analyzing trace with hash -893709325, now seen corresponding path program 1 times [2021-06-05 01:47:32,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:47:32,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747472172] [2021-06-05 01:47:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:47:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:47:32,180 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 01:47:32,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:47:32,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747472172] [2021-06-05 01:47:32,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747472172] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:47:32,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 01:47:32,181 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 01:47:32,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954623069] [2021-06-05 01:47:32,181 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 01:47:32,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:47:32,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 01:47:32,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 01:47:32,182 INFO L87 Difference]: Start difference. First operand 317478 states and 1215697 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:47:35,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:47:35,121 INFO L93 Difference]: Finished difference Result 317464 states and 1215682 transitions. [2021-06-05 01:47:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 01:47:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-05 01:47:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:47:37,203 INFO L225 Difference]: With dead ends: 317464 [2021-06-05 01:47:37,204 INFO L226 Difference]: Without dead ends: 317464 [2021-06-05 01:47:37,204 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 01:48:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317464 states. [2021-06-05 01:48:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317464 to 317464. [2021-06-05 01:48:22,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317464 states, 317460 states have (on average 3.8294021294021294) internal successors, (1215682), 317463 states have internal predecessors, (1215682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:48:25,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317464 states to 317464 states and 1215682 transitions. [2021-06-05 01:48:25,358 INFO L78 Accepts]: Start accepts. Automaton has 317464 states and 1215682 transitions. Word has length 48 [2021-06-05 01:48:25,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:48:25,358 INFO L482 AbstractCegarLoop]: Abstraction has 317464 states and 1215682 transitions. [2021-06-05 01:48:25,358 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:48:25,358 INFO L276 IsEmpty]: Start isEmpty. Operand 317464 states and 1215682 transitions. [2021-06-05 01:48:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 01:48:25,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:48:25,360 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] [2021-06-05 01:48:25,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 01:48:25,361 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:48:25,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:48:25,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1168457378, now seen corresponding path program 1 times [2021-06-05 01:48:25,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:48:25,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216128935] [2021-06-05 01:48:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:48:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:48:25,468 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 01:48:25,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:48:25,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216128935] [2021-06-05 01:48:25,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216128935] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:48:25,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216823849] [2021-06-05 01:48:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 01:48:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:48:25,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-06-05 01:48:25,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:48:25,769 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 01:48:25,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216823849] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:48:25,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-05 01:48:25,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-05 01:48:25,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517779577] [2021-06-05 01:48:25,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 01:48:25,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:48:25,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 01:48:25,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 01:48:25,771 INFO L87 Difference]: Start difference. First operand 317464 states and 1215682 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:48:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:48:30,103 INFO L93 Difference]: Finished difference Result 342902 states and 1300297 transitions. [2021-06-05 01:48:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 01:48:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-06-05 01:48:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:48:32,320 INFO L225 Difference]: With dead ends: 342902 [2021-06-05 01:48:32,320 INFO L226 Difference]: Without dead ends: 317464 [2021-06-05 01:48:32,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-05 01:49:14,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317464 states. [2021-06-05 01:49:21,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317464 to 317464. [2021-06-05 01:49:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317464 states, 317460 states have (on average 3.7893372393372395) internal successors, (1202963), 317463 states have internal predecessors, (1202963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:49:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317464 states to 317464 states and 1202963 transitions. [2021-06-05 01:49:25,465 INFO L78 Accepts]: Start accepts. Automaton has 317464 states and 1202963 transitions. Word has length 58 [2021-06-05 01:49:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:49:25,466 INFO L482 AbstractCegarLoop]: Abstraction has 317464 states and 1202963 transitions. [2021-06-05 01:49:25,466 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:49:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 317464 states and 1202963 transitions. [2021-06-05 01:49:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 01:49:25,469 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:49:25,469 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] [2021-06-05 01:49:25,687 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-06-05 01:49:25,687 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:49:25,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:49:25,688 INFO L82 PathProgramCache]: Analyzing trace with hash -798786115, now seen corresponding path program 1 times [2021-06-05 01:49:25,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:49:25,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750790240] [2021-06-05 01:49:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:49:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:49:25,781 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 01:49:25,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:49:25,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750790240] [2021-06-05 01:49:25,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750790240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:49:25,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385596565] [2021-06-05 01:49:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 01:49:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:49:25,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 01:49:25,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 01:49:26,158 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 01:49:26,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385596565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 01:49:26,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 01:49:26,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-05 01:49:26,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704818063] [2021-06-05 01:49:26,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 01:49:26,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:49:26,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 01:49:26,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-05 01:49:26,163 INFO L87 Difference]: Start difference. First operand 317464 states and 1202963 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:49:29,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:49:29,991 INFO L93 Difference]: Finished difference Result 317142 states and 1202333 transitions. [2021-06-05 01:49:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 01:49:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 60 [2021-06-05 01:49:30,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:49:32,180 INFO L225 Difference]: With dead ends: 317142 [2021-06-05 01:49:32,181 INFO L226 Difference]: Without dead ends: 317142 [2021-06-05 01:49:32,181 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-05 01:50:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317142 states. [2021-06-05 01:50:20,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317142 to 317142. [2021-06-05 01:50:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317142 states, 317139 states have (on average 3.7911861991114306) internal successors, (1202333), 317141 states have internal predecessors, (1202333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:50:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317142 states to 317142 states and 1202333 transitions. [2021-06-05 01:50:24,189 INFO L78 Accepts]: Start accepts. Automaton has 317142 states and 1202333 transitions. Word has length 60 [2021-06-05 01:50:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 01:50:24,189 INFO L482 AbstractCegarLoop]: Abstraction has 317142 states and 1202333 transitions. [2021-06-05 01:50:24,189 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 01:50:24,189 INFO L276 IsEmpty]: Start isEmpty. Operand 317142 states and 1202333 transitions. [2021-06-05 01:50:24,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-06-05 01:50:24,219 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 01:50:24,220 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-06-05 01:50:24,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 01:50:24,440 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 01:50:24,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 01:50:24,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1833777415, now seen corresponding path program 1 times [2021-06-05 01:50:24,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 01:50:24,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129333842] [2021-06-05 01:50:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 01:50:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 01:50:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-05 01:50:24,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 01:50:24,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129333842] [2021-06-05 01:50:24,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129333842] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 01:50:24,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 01:50:24,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 01:50:24,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586145559] [2021-06-05 01:50:24,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 01:50:24,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 01:50:24,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 01:50:24,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 01:50:24,591 INFO L87 Difference]: Start difference. First operand 317142 states and 1202333 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 01:50:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 01:50:29,026 INFO L93 Difference]: Finished difference Result 352350 states and 1324879 transitions. [2021-06-05 01:50:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 01:50:29,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 70 [2021-06-05 01:50:29,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 01:50:31,625 INFO L225 Difference]: With dead ends: 352350 [2021-06-05 01:50:31,626 INFO L226 Difference]: Without dead ends: 314262 [2021-06-05 01:50:31,626 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown