/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 11:47:40,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 11:47:40,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 11:47:40,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 11:47:40,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 11:47:40,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 11:47:40,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 11:47:40,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 11:47:40,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 11:47:40,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 11:47:40,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 11:47:40,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 11:47:40,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 11:47:40,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 11:47:40,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 11:47:40,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 11:47:40,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 11:47:40,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 11:47:40,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 11:47:40,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 11:47:40,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 11:47:40,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 11:47:40,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 11:47:40,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 11:47:40,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 11:47:40,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 11:47:40,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 11:47:40,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 11:47:40,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 11:47:40,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 11:47:40,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 11:47:40,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 11:47:40,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 11:47:40,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 11:47:40,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 11:47:40,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 11:47:40,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 11:47:40,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 11:47:40,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 11:47:40,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 11:47:40,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 11:47:40,950 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-VariableLbe-McrStrategy.epf [2020-04-18 11:47:40,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 11:47:40,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 11:47:40,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 11:47:40,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 11:47:40,975 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 11:47:40,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 11:47:40,975 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 11:47:40,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 11:47:40,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 11:47:40,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 11:47:40,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 11:47:40,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 11:47:40,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 11:47:40,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 11:47:40,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 11:47:40,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 11:47:40,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 11:47:40,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 11:47:40,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 11:47:40,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 11:47:40,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 11:47:40,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 11:47:40,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 11:47:40,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 11:47:40,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 11:47:40,980 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 11:47:40,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 11:47:40,981 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 11:47:40,981 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 11:47:40,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 11:47:40,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 11:47:41,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 11:47:41,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 11:47:41,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 11:47:41,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 11:47:41,286 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 11:47:41,286 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2020-04-18 11:47:41,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0149f13d9/c7441d98eee54ae1b2400891c4d954b6/FLAG52c1d5f2a [2020-04-18 11:47:41,818 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 11:47:41,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2020-04-18 11:47:41,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0149f13d9/c7441d98eee54ae1b2400891c4d954b6/FLAG52c1d5f2a [2020-04-18 11:47:42,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0149f13d9/c7441d98eee54ae1b2400891c4d954b6 [2020-04-18 11:47:42,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 11:47:42,126 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 11:47:42,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 11:47:42,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 11:47:42,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 11:47:42,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9843189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42, skipping insertion in model container [2020-04-18 11:47:42,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 11:47:42,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 11:47:42,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:47:42,668 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 11:47:42,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 11:47:42,849 INFO L208 MainTranslator]: Completed translation [2020-04-18 11:47:42,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42 WrapperNode [2020-04-18 11:47:42,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 11:47:42,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 11:47:42,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 11:47:42,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 11:47:42,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 11:47:42,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 11:47:42,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 11:47:42,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 11:47:42,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (1/1) ... [2020-04-18 11:47:42,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 11:47:42,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 11:47:42,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 11:47:42,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 11:47:42,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (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 [2020-04-18 11:47:43,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-04-18 11:47:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2020-04-18 11:47:43,055 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2020-04-18 11:47:43,055 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2020-04-18 11:47:43,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2020-04-18 11:47:43,056 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2020-04-18 11:47:43,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2020-04-18 11:47:43,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 11:47:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-04-18 11:47:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 11:47:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 11:47:43,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-04-18 11:47:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 11:47:43,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 11:47:43,061 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 11:47:43,476 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 11:47:43,477 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-04-18 11:47:43,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:47:43 BoogieIcfgContainer [2020-04-18 11:47:43,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 11:47:43,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 11:47:43,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 11:47:43,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 11:47:43,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 11:47:42" (1/3) ... [2020-04-18 11:47:43,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef1492c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:47:43, skipping insertion in model container [2020-04-18 11:47:43,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 11:47:42" (2/3) ... [2020-04-18 11:47:43,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ef1492c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 11:47:43, skipping insertion in model container [2020-04-18 11:47:43,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 11:47:43" (3/3) ... [2020-04-18 11:47:43,498 INFO L109 eAbstractionObserver]: Analyzing ICFG lazy01.i [2020-04-18 11:47:43,508 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 11:47:43,508 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 11:47:43,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 11:47:43,517 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 11:47:43,542 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,543 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,543 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,543 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,544 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,544 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,544 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,544 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,545 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,545 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,545 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,546 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,546 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,546 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,546 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,547 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,547 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,547 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,548 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,548 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,549 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,549 WARN L315 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,549 WARN L315 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,550 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,550 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,551 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,551 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,555 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,555 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,555 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,556 WARN L315 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,556 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,556 WARN L315 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,561 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,562 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,562 WARN L315 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,562 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,563 WARN L315 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,565 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,565 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,565 WARN L315 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,565 WARN L315 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,566 WARN L315 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 11:47:43,594 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 11:47:43,610 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 11:47:43,610 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 11:47:43,610 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 11:47:43,611 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 11:47:43,611 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 11:47:43,611 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 11:47:43,611 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 11:47:43,611 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 11:47:43,627 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 78 transitions, 198 flow [2020-04-18 11:47:43,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 198 flow [2020-04-18 11:47:43,674 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-04-18 11:47:43,674 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-18 11:47:43,680 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 86 events. 6/86 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2020-04-18 11:47:43,683 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 198 flow [2020-04-18 11:47:43,708 INFO L129 PetriNetUnfolder]: 6/86 cut-off events. [2020-04-18 11:47:43,709 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2020-04-18 11:47:43,713 INFO L80 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 86 events. 6/86 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 52. Up to 6 conditions per place. [2020-04-18 11:47:43,715 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1116 [2020-04-18 11:47:43,716 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 11:47:45,072 WARN L192 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2020-04-18 11:47:45,180 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-04-18 11:47:45,193 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2560 [2020-04-18 11:47:45,193 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2020-04-18 11:47:45,197 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 38 transitions, 118 flow [2020-04-18 11:47:45,250 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 562 states. [2020-04-18 11:47:45,253 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states. [2020-04-18 11:47:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:47:45,267 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:47:45,267 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:47:45,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:47:45,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:45,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1645296335, now seen corresponding path program 1 times [2020-04-18 11:47:45,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:47:45,284 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [106985425] [2020-04-18 11:47:45,301 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:45,315 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:47:45,317 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 11:47:45,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 11:47:45,318 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:47:45,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:45,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1645296335, now seen corresponding path program 2 times [2020-04-18 11:47:45,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:45,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640978607] [2020-04-18 11:47:45,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:45,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640978607] [2020-04-18 11:47:45,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:45,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 11:47:45,626 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:45,627 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:45,632 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 11:47:45,632 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:45,639 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:45,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:45,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:47:45,648 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 11:47:45,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:45,653 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 11:47:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 11:47:45,660 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:47:45,662 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [106985425] [2020-04-18 11:47:45,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:47:45,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 11:47:45,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [106985425] [2020-04-18 11:47:45,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 11:47:45,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:47:45,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:45,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:47:45,669 INFO L87 Difference]: Start difference. First operand 562 states. Second operand 3 states. [2020-04-18 11:47:45,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:45,735 INFO L93 Difference]: Finished difference Result 538 states and 1407 transitions. [2020-04-18 11:47:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 11:47:45,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 11:47:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:47:45,759 INFO L225 Difference]: With dead ends: 538 [2020-04-18 11:47:45,759 INFO L226 Difference]: Without dead ends: 250 [2020-04-18 11:47:45,761 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:47:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-04-18 11:47:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-04-18 11:47:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-04-18 11:47:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 622 transitions. [2020-04-18 11:47:45,832 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 622 transitions. Word has length 8 [2020-04-18 11:47:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:47:45,833 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 622 transitions. [2020-04-18 11:47:45,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 11:47:45,833 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 622 transitions. [2020-04-18 11:47:45,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:47:45,835 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:47:45,835 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:47:45,835 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:47:45,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash 581811827, now seen corresponding path program 1 times [2020-04-18 11:47:45,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:47:45,836 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [158980591] [2020-04-18 11:47:45,836 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:45,837 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-04-18 11:47:45,838 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-04-18 11:47:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:47:45,838 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:47:45,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:45,839 INFO L82 PathProgramCache]: Analyzing trace with hash 581819627, now seen corresponding path program 2 times [2020-04-18 11:47:45,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:45,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376225530] [2020-04-18 11:47:45,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:45,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:45,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376225530] [2020-04-18 11:47:45,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:45,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:47:45,918 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:45,920 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:45,924 INFO L259 McrAutomatonBuilder]: Finished intersection with 12 states and 12 transitions. [2020-04-18 11:47:45,924 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:45,928 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:45,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:45,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:47:45,929 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-04-18 11:47:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:45,937 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 11:47:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 11:47:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 11:47:45,938 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:47:45,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:45,939 INFO L82 PathProgramCache]: Analyzing trace with hash 581811827, now seen corresponding path program 3 times [2020-04-18 11:47:45,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:45,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988755329] [2020-04-18 11:47:45,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988755329] [2020-04-18 11:47:46,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:47:46,023 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,024 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,026 INFO L259 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-04-18 11:47:46,026 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,031 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:46,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:47:46,032 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand 3 states. [2020-04-18 11:47:46,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,040 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2020-04-18 11:47:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2020-04-18 11:47:46,040 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:47:46,041 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [158980591] [2020-04-18 11:47:46,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:47:46,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 11:47:46,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [158980591] [2020-04-18 11:47:46,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 11:47:46,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:47:46,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:47:46,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:47:46,043 INFO L87 Difference]: Start difference. First operand 250 states and 622 transitions. Second operand 4 states. [2020-04-18 11:47:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,085 INFO L93 Difference]: Finished difference Result 142 states and 253 transitions. [2020-04-18 11:47:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:47:46,086 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 11:47:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:47:46,087 INFO L225 Difference]: With dead ends: 142 [2020-04-18 11:47:46,087 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 11:47:46,089 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:47:46,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 11:47:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 11:47:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 11:47:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 250 transitions. [2020-04-18 11:47:46,101 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 250 transitions. Word has length 10 [2020-04-18 11:47:46,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:47:46,102 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 250 transitions. [2020-04-18 11:47:46,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 11:47:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 250 transitions. [2020-04-18 11:47:46,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:47:46,103 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:47:46,103 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:47:46,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:47:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,103 INFO L82 PathProgramCache]: Analyzing trace with hash 861729767, now seen corresponding path program 1 times [2020-04-18 11:47:46,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:47:46,104 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1805282539] [2020-04-18 11:47:46,105 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,105 INFO L259 McrAutomatonBuilder]: Finished intersection with 24 states and 35 transitions. [2020-04-18 11:47:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-04-18 11:47:46,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:47:46,106 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:47:46,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,107 INFO L82 PathProgramCache]: Analyzing trace with hash 856539467, now seen corresponding path program 2 times [2020-04-18 11:47:46,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147319760] [2020-04-18 11:47:46,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147319760] [2020-04-18 11:47:46,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:47:46,168 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,169 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,171 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 13 transitions. [2020-04-18 11:47:46,172 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,175 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:46,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:47:46,176 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-04-18 11:47:46,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,181 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2020-04-18 11:47:46,181 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2020-04-18 11:47:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:47:46,181 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:47:46,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,182 INFO L82 PathProgramCache]: Analyzing trace with hash 856297637, now seen corresponding path program 3 times [2020-04-18 11:47:46,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608758524] [2020-04-18 11:47:46,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608758524] [2020-04-18 11:47:46,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:47:46,248 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,249 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,251 INFO L259 McrAutomatonBuilder]: Finished intersection with 13 states and 13 transitions. [2020-04-18 11:47:46,251 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,257 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:46,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 11:47:46,258 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand 3 states. [2020-04-18 11:47:46,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,264 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2020-04-18 11:47:46,264 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2020-04-18 11:47:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 11:47:46,265 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:47:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,265 INFO L82 PathProgramCache]: Analyzing trace with hash 861729767, now seen corresponding path program 4 times [2020-04-18 11:47:46,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150024144] [2020-04-18 11:47:46,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150024144] [2020-04-18 11:47:46,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:47:46,317 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,318 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,320 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-04-18 11:47:46,321 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,331 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 11:47:46,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 11:47:46,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:47:46,333 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 4 states. [2020-04-18 11:47:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,337 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2020-04-18 11:47:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2020-04-18 11:47:46,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:47:46,338 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1805282539] [2020-04-18 11:47:46,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:47:46,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 11:47:46,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1805282539] [2020-04-18 11:47:46,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:47:46,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:47:46,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:47:46,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:47:46,342 INFO L87 Difference]: Start difference. First operand 140 states and 250 transitions. Second operand 5 states. [2020-04-18 11:47:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,419 INFO L93 Difference]: Finished difference Result 135 states and 241 transitions. [2020-04-18 11:47:46,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 11:47:46,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 11:47:46,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:47:46,422 INFO L225 Difference]: With dead ends: 135 [2020-04-18 11:47:46,422 INFO L226 Difference]: Without dead ends: 130 [2020-04-18 11:47:46,423 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:47:46,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-04-18 11:47:46,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-04-18 11:47:46,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-04-18 11:47:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 232 transitions. [2020-04-18 11:47:46,448 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 232 transitions. Word has length 11 [2020-04-18 11:47:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:47:46,448 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 232 transitions. [2020-04-18 11:47:46,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:47:46,448 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 232 transitions. [2020-04-18 11:47:46,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:47:46,451 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:47:46,452 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:47:46,452 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:47:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1322208688, now seen corresponding path program 1 times [2020-04-18 11:47:46,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:47:46,453 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1433779660] [2020-04-18 11:47:46,453 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,455 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 60 transitions. [2020-04-18 11:47:46,455 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-04-18 11:47:46,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:47:46,456 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:47:46,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,456 INFO L82 PathProgramCache]: Analyzing trace with hash 783313648, now seen corresponding path program 2 times [2020-04-18 11:47:46,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479854776] [2020-04-18 11:47:46,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479854776] [2020-04-18 11:47:46,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:47:46,488 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,489 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,520 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 16 transitions. [2020-04-18 11:47:46,520 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,526 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:46,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:47:46,527 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-04-18 11:47:46,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,531 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 11:47:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2020-04-18 11:47:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 11:47:46,531 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:47:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,532 INFO L82 PathProgramCache]: Analyzing trace with hash 787628848, now seen corresponding path program 3 times [2020-04-18 11:47:46,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491300747] [2020-04-18 11:47:46,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491300747] [2020-04-18 11:47:46,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:47:46,575 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,576 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,578 INFO L259 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-04-18 11:47:46,578 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,589 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:47:46,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:47:46,590 INFO L87 Difference]: Start difference. First operand 39 states and 61 transitions. Second operand 5 states. [2020-04-18 11:47:46,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,602 INFO L93 Difference]: Finished difference Result 39 states and 61 transitions. [2020-04-18 11:47:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2020-04-18 11:47:46,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 11:47:46,603 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1433779660] [2020-04-18 11:47:46,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 11:47:46,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 11:47:46,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1433779660] [2020-04-18 11:47:46,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 11:47:46,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 11:47:46,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:47:46,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:47:46,604 INFO L87 Difference]: Start difference. First operand 130 states and 232 transitions. Second operand 5 states. [2020-04-18 11:47:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,625 INFO L93 Difference]: Finished difference Result 125 states and 223 transitions. [2020-04-18 11:47:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 11:47:46,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 11:47:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 11:47:46,627 INFO L225 Difference]: With dead ends: 125 [2020-04-18 11:47:46,627 INFO L226 Difference]: Without dead ends: 120 [2020-04-18 11:47:46,628 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-04-18 11:47:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-04-18 11:47:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-04-18 11:47:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-04-18 11:47:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 214 transitions. [2020-04-18 11:47:46,642 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 214 transitions. Word has length 12 [2020-04-18 11:47:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 11:47:46,642 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 214 transitions. [2020-04-18 11:47:46,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 11:47:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 214 transitions. [2020-04-18 11:47:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:47:46,645 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 11:47:46,645 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 11:47:46,646 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 11:47:46,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,646 INFO L82 PathProgramCache]: Analyzing trace with hash 779348326, now seen corresponding path program 1 times [2020-04-18 11:47:46,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 11:47:46,647 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [884234037] [2020-04-18 11:47:46,647 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,651 INFO L259 McrAutomatonBuilder]: Finished intersection with 112 states and 255 transitions. [2020-04-18 11:47:46,653 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-04-18 11:47:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:47:46,654 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 11:47:46,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1139773834, now seen corresponding path program 2 times [2020-04-18 11:47:46,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177024648] [2020-04-18 11:47:46,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177024648] [2020-04-18 11:47:46,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 11:47:46,711 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,713 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,716 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 19 transitions. [2020-04-18 11:47:46,717 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,725 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:46,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 11:47:46,726 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 3 states. [2020-04-18 11:47:46,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,736 INFO L93 Difference]: Finished difference Result 126 states and 274 transitions. [2020-04-18 11:47:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 274 transitions. [2020-04-18 11:47:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:47:46,737 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 11:47:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,737 INFO L82 PathProgramCache]: Analyzing trace with hash 844878154, now seen corresponding path program 3 times [2020-04-18 11:47:46,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703760051] [2020-04-18 11:47:46,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703760051] [2020-04-18 11:47:46,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 11:47:46,783 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,784 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,787 INFO L259 McrAutomatonBuilder]: Finished intersection with 18 states and 19 transitions. [2020-04-18 11:47:46,787 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,797 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 11:47:46,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 11:47:46,798 INFO L87 Difference]: Start difference. First operand 126 states and 274 transitions. Second operand 5 states. [2020-04-18 11:47:46,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,832 INFO L93 Difference]: Finished difference Result 160 states and 337 transitions. [2020-04-18 11:47:46,832 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 337 transitions. [2020-04-18 11:47:46,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:47:46,833 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 11:47:46,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,834 INFO L82 PathProgramCache]: Analyzing trace with hash 845530054, now seen corresponding path program 4 times [2020-04-18 11:47:46,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797019186] [2020-04-18 11:47:46,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 11:47:46,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 11:47:46,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797019186] [2020-04-18 11:47:46,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 11:47:46,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 11:47:46,863 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 11:47:46,865 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 11:47:46,868 INFO L259 McrAutomatonBuilder]: Finished intersection with 17 states and 17 transitions. [2020-04-18 11:47:46,868 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 11:47:46,879 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 11:47:46,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 11:47:46,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-04-18 11:47:46,880 INFO L87 Difference]: Start difference. First operand 160 states and 337 transitions. Second operand 3 states. [2020-04-18 11:47:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 11:47:46,893 INFO L93 Difference]: Finished difference Result 184 states and 377 transitions. [2020-04-18 11:47:46,894 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 377 transitions. [2020-04-18 11:47:46,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 11:47:46,894 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 11:47:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 11:47:46,895 INFO L82 PathProgramCache]: Analyzing trace with hash 779348326, now seen corresponding path program 5 times [2020-04-18 11:47:46,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 11:47:46,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750187640] [2020-04-18 11:47:46,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 11:47:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:47:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 11:47:46,986 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 11:47:46,986 INFO L174 FreeRefinementEngine]: Strategy MCR found a feasible trace [2020-04-18 11:47:46,986 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 11:47:47,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 11:47:47 BasicIcfg [2020-04-18 11:47:47,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 11:47:47,055 INFO L168 Benchmark]: Toolchain (without parser) took 4949.87 ms. Allocated memory was 138.9 MB in the beginning and 245.9 MB in the end (delta: 107.0 MB). Free memory was 101.5 MB in the beginning and 146.4 MB in the end (delta: -44.9 MB). Peak memory consumption was 62.1 MB. Max. memory is 7.1 GB. [2020-04-18 11:47:47,056 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-18 11:47:47,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 723.14 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 161.2 MB in the end (delta: -61.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-04-18 11:47:47,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.56 ms. Allocated memory is still 202.9 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:47:47,058 INFO L168 Benchmark]: Boogie Preprocessor took 51.18 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 11:47:47,058 INFO L168 Benchmark]: RCFGBuilder took 497.90 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 134.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-04-18 11:47:47,059 INFO L168 Benchmark]: TraceAbstraction took 3568.76 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 134.4 MB in the beginning and 146.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-04-18 11:47:47,063 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 723.14 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.6 MB in the beginning and 161.2 MB in the end (delta: -61.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 77.56 ms. Allocated memory is still 202.9 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.18 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.90 ms. Allocated memory is still 202.9 MB. Free memory was 157.9 MB in the beginning and 134.4 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3568.76 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 134.4 MB in the beginning and 146.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 81 ProgramPointsBefore, 41 ProgramPointsAfterwards, 78 TransitionsBefore, 38 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 464 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2560 CheckedPairsTotal, 44 TotalNumberOfCompositions - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L683] 0 pthread_mutex_t mutex; [L684] 0 int data = 0; [L712] 0 pthread_t t1, t2, t3; [L713] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={5:0}] [L714] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={5:0}] [L715] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={5:0}] [L688] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={5:0}] [L690] 1 return 0; [L695] 2 data+=2 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={5:0}] [L697] 2 return 0; [L702] COND TRUE 3 data >= 3 [L703] 3 __VERIFIER_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 125 SDtfs, 104 SDslu, 184 SDs, 0 SdLazy, 55 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...