/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-NoLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-28 05:46:58,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-28 05:46:58,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-28 05:46:58,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-28 05:46:58,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-28 05:46:58,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-28 05:46:58,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-28 05:46:58,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-28 05:46:58,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-28 05:46:58,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-28 05:46:58,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-28 05:46:58,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-28 05:46:58,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-28 05:46:58,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-28 05:46:58,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-28 05:46:58,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-28 05:46:58,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-28 05:46:58,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-28 05:46:58,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-28 05:46:58,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-28 05:46:58,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-28 05:46:58,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-28 05:46:58,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-28 05:46:58,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-28 05:46:58,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-28 05:46:58,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-28 05:46:58,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-28 05:46:58,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-28 05:46:58,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-28 05:46:58,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-28 05:46:58,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-28 05:46:58,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-28 05:46:58,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-28 05:46:58,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-28 05:46:58,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-28 05:46:58,549 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-28 05:46:58,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-28 05:46:58,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-28 05:46:58,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-28 05:46:58,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-28 05:46:58,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-28 05:46:58,554 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-MCR.epf [2019-12-28 05:46:58,577 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-28 05:46:58,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-28 05:46:58,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-28 05:46:58,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-28 05:46:58,580 INFO L138 SettingsManager]: * Use SBE=true [2019-12-28 05:46:58,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-28 05:46:58,580 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-28 05:46:58,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-28 05:46:58,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-28 05:46:58,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-28 05:46:58,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-28 05:46:58,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-28 05:46:58,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-28 05:46:58,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-28 05:46:58,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-28 05:46:58,583 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-28 05:46:58,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-28 05:46:58,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-28 05:46:58,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-28 05:46:58,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-28 05:46:58,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-28 05:46:58,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-28 05:46:58,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-28 05:46:58,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-28 05:46:58,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-28 05:46:58,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-28 05:46:58,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-28 05:46:58,586 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-28 05:46:58,586 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2019-12-28 05:46:58,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-28 05:46:58,587 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-28 05:46:58,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-28 05:46:58,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-28 05:46:58,918 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-28 05:46:58,922 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-28 05:46:58,924 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-28 05:46:58,925 INFO L275 PluginConnector]: CDTParser initialized [2019-12-28 05:46:58,926 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2019-12-28 05:46:58,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d22ca5b/54a5d2765a4f4ee88bf66181a2ee74ff/FLAG72284db6e [2019-12-28 05:46:59,567 INFO L306 CDTParser]: Found 1 translation units. [2019-12-28 05:46:59,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2019-12-28 05:46:59,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d22ca5b/54a5d2765a4f4ee88bf66181a2ee74ff/FLAG72284db6e [2019-12-28 05:46:59,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47d22ca5b/54a5d2765a4f4ee88bf66181a2ee74ff [2019-12-28 05:46:59,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-28 05:46:59,850 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-28 05:46:59,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-28 05:46:59,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-28 05:46:59,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-28 05:46:59,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:46:59" (1/1) ... [2019-12-28 05:46:59,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2422dac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:46:59, skipping insertion in model container [2019-12-28 05:46:59,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:46:59" (1/1) ... [2019-12-28 05:46:59,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-28 05:46:59,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-28 05:47:00,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-28 05:47:00,587 INFO L203 MainTranslator]: Completed pre-run [2019-12-28 05:47:00,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-28 05:47:00,876 INFO L208 MainTranslator]: Completed translation [2019-12-28 05:47:00,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00 WrapperNode [2019-12-28 05:47:00,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-28 05:47:00,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-28 05:47:00,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-28 05:47:00,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-28 05:47:00,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-28 05:47:00,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-28 05:47:00,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-28 05:47:00,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-28 05:47:00,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (1/1) ... [2019-12-28 05:47:00,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-28 05:47:00,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-28 05:47:00,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-28 05:47:00,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-28 05:47:00,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (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 [2019-12-28 05:47:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-28 05:47:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-28 05:47:01,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-28 05:47:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-28 05:47:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2019-12-28 05:47:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2019-12-28 05:47:01,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2019-12-28 05:47:01,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-12-28 05:47:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-28 05:47:01,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-28 05:47:01,031 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-28 05:47:01,499 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-28 05:47:01,500 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-28 05:47:01,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:47:01 BoogieIcfgContainer [2019-12-28 05:47:01,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-28 05:47:01,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-28 05:47:01,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-28 05:47:01,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-28 05:47:01,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:46:59" (1/3) ... [2019-12-28 05:47:01,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a71818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:47:01, skipping insertion in model container [2019-12-28 05:47:01,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:47:00" (2/3) ... [2019-12-28 05:47:01,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a71818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:47:01, skipping insertion in model container [2019-12-28 05:47:01,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:47:01" (3/3) ... [2019-12-28 05:47:01,509 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2019-12-28 05:47:01,519 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-28 05:47:01,519 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-28 05:47:01,526 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-28 05:47:01,527 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-28 05:47:01,549 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,549 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,550 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,550 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,550 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,550 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,550 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,551 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,551 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,551 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,551 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,552 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,552 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,552 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,552 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,553 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,553 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,553 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,553 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,553 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,554 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,554 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,554 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,558 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,559 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,559 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,559 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,559 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,559 WARN L315 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,560 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,560 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,560 WARN L315 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-28 05:47:01,578 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-12-28 05:47:01,594 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-28 05:47:01,595 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-28 05:47:01,595 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-28 05:47:01,595 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-28 05:47:01,595 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-28 05:47:01,595 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-28 05:47:01,595 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-28 05:47:01,596 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-28 05:47:01,608 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 78 places, 81 transitions [2019-12-28 05:47:01,634 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 312 states. [2019-12-28 05:47:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2019-12-28 05:47:01,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-28 05:47:01,651 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:47:01,653 INFO L411 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] [2019-12-28 05:47:01,653 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:47:01,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:47:01,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1789221034, now seen corresponding path program 1 times [2019-12-28 05:47:01,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:47:01,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277624627] [2019-12-28 05:47:01,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:47:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:47:01,887 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277624627] [2019-12-28 05:47:01,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-28 05:47:01,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-28 05:47:01,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1363810572] [2019-12-28 05:47:01,890 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:47:01,901 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:47:01,938 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 82 states and 116 transitions. [2019-12-28 05:47:01,938 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:47:01,959 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-28 05:47:01,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-28 05:47:01,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:47:01,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-28 05:47:01,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-28 05:47:01,979 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2019-12-28 05:47:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:47:02,039 INFO L93 Difference]: Finished difference Result 305 states and 575 transitions. [2019-12-28 05:47:02,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-28 05:47:02,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-12-28 05:47:02,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:47:02,067 INFO L225 Difference]: With dead ends: 305 [2019-12-28 05:47:02,067 INFO L226 Difference]: Without dead ends: 268 [2019-12-28 05:47:02,071 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-28 05:47:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2019-12-28 05:47:02,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2019-12-28 05:47:02,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2019-12-28 05:47:02,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 502 transitions. [2019-12-28 05:47:02,174 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 502 transitions. Word has length 46 [2019-12-28 05:47:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:47:02,175 INFO L462 AbstractCegarLoop]: Abstraction has 268 states and 502 transitions. [2019-12-28 05:47:02,175 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-28 05:47:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 502 transitions. [2019-12-28 05:47:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-12-28 05:47:02,186 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:47:02,187 INFO L411 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] [2019-12-28 05:47:02,187 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:47:02,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:47:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash 73657564, now seen corresponding path program 1 times [2019-12-28 05:47:02,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:47:02,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739526247] [2019-12-28 05:47:02,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:47:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:02,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:47:02,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739526247] [2019-12-28 05:47:02,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-28 05:47:02,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-28 05:47:02,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1155128281] [2019-12-28 05:47:02,360 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:47:02,369 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:47:02,392 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 82 states and 116 transitions. [2019-12-28 05:47:02,392 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:47:02,425 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 4 times. [2019-12-28 05:47:02,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-28 05:47:02,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:47:02,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-28 05:47:02,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-28 05:47:02,428 INFO L87 Difference]: Start difference. First operand 268 states and 502 transitions. Second operand 5 states. [2019-12-28 05:47:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:47:02,471 INFO L93 Difference]: Finished difference Result 398 states and 762 transitions. [2019-12-28 05:47:02,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-28 05:47:02,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-12-28 05:47:02,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:47:02,475 INFO L225 Difference]: With dead ends: 398 [2019-12-28 05:47:02,476 INFO L226 Difference]: Without dead ends: 398 [2019-12-28 05:47:02,477 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-28 05:47:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2019-12-28 05:47:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 281. [2019-12-28 05:47:02,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2019-12-28 05:47:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 528 transitions. [2019-12-28 05:47:02,494 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 528 transitions. Word has length 46 [2019-12-28 05:47:02,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:47:02,494 INFO L462 AbstractCegarLoop]: Abstraction has 281 states and 528 transitions. [2019-12-28 05:47:02,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-28 05:47:02,495 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 528 transitions. [2019-12-28 05:47:02,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-12-28 05:47:02,497 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:47:02,497 INFO L411 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] [2019-12-28 05:47:02,497 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:47:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:47:02,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1619336906, now seen corresponding path program 1 times [2019-12-28 05:47:02,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:47:02,499 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432772060] [2019-12-28 05:47:02,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:47:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:47:02,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432772060] [2019-12-28 05:47:02,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-28 05:47:02,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-28 05:47:02,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1616568228] [2019-12-28 05:47:02,582 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:47:02,596 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:47:02,696 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 148 states and 237 transitions. [2019-12-28 05:47:02,697 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:47:02,727 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 10 times. [2019-12-28 05:47:02,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-28 05:47:02,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:47:02,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-28 05:47:02,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-28 05:47:02,729 INFO L87 Difference]: Start difference. First operand 281 states and 528 transitions. Second operand 5 states. [2019-12-28 05:47:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:47:02,856 INFO L93 Difference]: Finished difference Result 413 states and 757 transitions. [2019-12-28 05:47:02,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-28 05:47:02,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2019-12-28 05:47:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:47:02,860 INFO L225 Difference]: With dead ends: 413 [2019-12-28 05:47:02,860 INFO L226 Difference]: Without dead ends: 413 [2019-12-28 05:47:02,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-28 05:47:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-12-28 05:47:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 282. [2019-12-28 05:47:02,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2019-12-28 05:47:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 521 transitions. [2019-12-28 05:47:02,871 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 521 transitions. Word has length 57 [2019-12-28 05:47:02,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:47:02,872 INFO L462 AbstractCegarLoop]: Abstraction has 282 states and 521 transitions. [2019-12-28 05:47:02,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-28 05:47:02,872 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 521 transitions. [2019-12-28 05:47:02,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-12-28 05:47:02,876 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:47:02,877 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-28 05:47:02,877 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:47:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:47:02,877 INFO L82 PathProgramCache]: Analyzing trace with hash -614274507, now seen corresponding path program 1 times [2019-12-28 05:47:02,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:47:02,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096356847] [2019-12-28 05:47:02,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:47:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:47:03,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096356847] [2019-12-28 05:47:03,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131222534] [2019-12-28 05:47:03,044 INFO L94 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 [2019-12-28 05:47:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:03,164 INFO L264 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-28 05:47:03,177 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:47:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:47:03,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:47:03,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-12-28 05:47:03,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1011319880] [2019-12-28 05:47:03,227 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:47:03,243 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:47:03,323 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 192 states and 317 transitions. [2019-12-28 05:47:03,324 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:47:03,480 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 20 times. [2019-12-28 05:47:03,481 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-28 05:47:03,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:47:03,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-28 05:47:03,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-12-28 05:47:03,482 INFO L87 Difference]: Start difference. First operand 282 states and 521 transitions. Second operand 14 states. [2019-12-28 05:47:04,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:47:04,099 INFO L93 Difference]: Finished difference Result 620 states and 1124 transitions. [2019-12-28 05:47:04,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-28 05:47:04,100 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2019-12-28 05:47:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:47:04,106 INFO L225 Difference]: With dead ends: 620 [2019-12-28 05:47:04,106 INFO L226 Difference]: Without dead ends: 620 [2019-12-28 05:47:04,107 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=751, Unknown=0, NotChecked=0, Total=1056 [2019-12-28 05:47:04,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2019-12-28 05:47:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 418. [2019-12-28 05:47:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2019-12-28 05:47:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 784 transitions. [2019-12-28 05:47:04,126 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 784 transitions. Word has length 65 [2019-12-28 05:47:04,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:47:04,127 INFO L462 AbstractCegarLoop]: Abstraction has 418 states and 784 transitions. [2019-12-28 05:47:04,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-28 05:47:04,127 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 784 transitions. [2019-12-28 05:47:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-12-28 05:47:04,130 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:47:04,130 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-28 05:47:04,336 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:47:04,337 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:47:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:47:04,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1186918823, now seen corresponding path program 2 times [2019-12-28 05:47:04,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:47:04,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497378441] [2019-12-28 05:47:04,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:47:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:04,511 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-28 05:47:04,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497378441] [2019-12-28 05:47:04,512 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391927977] [2019-12-28 05:47:04,512 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-12-28 05:47:04,600 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-28 05:47:04,600 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-28 05:47:04,602 INFO L264 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-28 05:47:04,605 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:47:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-28 05:47:04,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:47:04,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-12-28 05:47:04,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2047941523] [2019-12-28 05:47:04,642 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:47:04,660 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:47:04,727 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 242 states and 406 transitions. [2019-12-28 05:47:04,728 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:47:04,958 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 25 times. [2019-12-28 05:47:04,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-28 05:47:04,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:47:04,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-28 05:47:04,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2019-12-28 05:47:04,960 INFO L87 Difference]: Start difference. First operand 418 states and 784 transitions. Second operand 17 states. [2019-12-28 05:47:05,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:47:05,381 INFO L93 Difference]: Finished difference Result 816 states and 1522 transitions. [2019-12-28 05:47:05,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-28 05:47:05,382 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2019-12-28 05:47:05,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:47:05,386 INFO L225 Difference]: With dead ends: 816 [2019-12-28 05:47:05,387 INFO L226 Difference]: Without dead ends: 816 [2019-12-28 05:47:05,387 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2019-12-28 05:47:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2019-12-28 05:47:05,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 622. [2019-12-28 05:47:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-12-28 05:47:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1174 transitions. [2019-12-28 05:47:05,404 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1174 transitions. Word has length 76 [2019-12-28 05:47:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:47:05,404 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 1174 transitions. [2019-12-28 05:47:05,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-28 05:47:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1174 transitions. [2019-12-28 05:47:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-12-28 05:47:05,407 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:47:05,407 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-28 05:47:05,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:47:05,611 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:47:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:47:05,612 INFO L82 PathProgramCache]: Analyzing trace with hash -2086131724, now seen corresponding path program 3 times [2019-12-28 05:47:05,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:47:05,614 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612459900] [2019-12-28 05:47:05,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:47:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:47:05,803 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612459900] [2019-12-28 05:47:05,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291263764] [2019-12-28 05:47:05,804 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-12-28 05:47:05,884 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-28 05:47:05,884 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-28 05:47:05,885 INFO L264 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-28 05:47:05,900 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:47:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-28 05:47:05,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:47:05,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-12-28 05:47:05,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1737633274] [2019-12-28 05:47:05,999 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:47:06,019 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:47:06,149 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 287 states and 488 transitions. [2019-12-28 05:47:06,149 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:47:07,358 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 67 times. [2019-12-28 05:47:07,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2019-12-28 05:47:07,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:47:07,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2019-12-28 05:47:07,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=2693, Unknown=0, NotChecked=0, Total=2970 [2019-12-28 05:47:07,361 INFO L87 Difference]: Start difference. First operand 622 states and 1174 transitions. Second operand 50 states. [2019-12-28 05:47:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:47:21,273 INFO L93 Difference]: Finished difference Result 1704 states and 3166 transitions. [2019-12-28 05:47:21,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2019-12-28 05:47:21,274 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 84 [2019-12-28 05:47:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:47:21,283 INFO L225 Difference]: With dead ends: 1704 [2019-12-28 05:47:21,283 INFO L226 Difference]: Without dead ends: 1704 [2019-12-28 05:47:21,299 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20334 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=9283, Invalid=49039, Unknown=0, NotChecked=0, Total=58322 [2019-12-28 05:47:21,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2019-12-28 05:47:21,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 988. [2019-12-28 05:47:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-12-28 05:47:21,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1870 transitions. [2019-12-28 05:47:21,332 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1870 transitions. Word has length 84 [2019-12-28 05:47:21,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:47:21,333 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1870 transitions. [2019-12-28 05:47:21,333 INFO L463 AbstractCegarLoop]: Interpolant automaton has 50 states. [2019-12-28 05:47:21,333 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1870 transitions. [2019-12-28 05:47:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-12-28 05:47:21,336 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:47:21,336 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-12-28 05:47:21,536 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:47:21,537 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:47:21,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:47:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1129051784, now seen corresponding path program 4 times [2019-12-28 05:47:21,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:47:21,539 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272789662] [2019-12-28 05:47:21,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:47:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:47:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:47:21,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272789662] [2019-12-28 05:47:21,805 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671979372] [2019-12-28 05:47:21,805 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2019-12-28 05:47:21,893 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-28 05:47:21,893 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-28 05:47:21,894 INFO L264 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-28 05:47:21,905 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:47:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 17 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-28 05:47:21,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:47:21,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2019-12-28 05:47:21,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1023012310] [2019-12-28 05:47:21,997 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:47:22,023 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:47:22,187 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 337 states and 577 transitions. [2019-12-28 05:47:22,187 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:47:23,701 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 77 times. [2019-12-28 05:47:23,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2019-12-28 05:47:23,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:47:23,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2019-12-28 05:47:23,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=3792, Unknown=0, NotChecked=0, Total=4160 [2019-12-28 05:47:23,705 INFO L87 Difference]: Start difference. First operand 988 states and 1870 transitions. Second operand 60 states. [2019-12-28 05:47:39,172 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 33 [2019-12-28 05:47:45,633 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2019-12-28 05:47:45,963 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-12-28 05:47:51,730 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2019-12-28 05:47:55,401 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-12-28 05:48:02,481 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-12-28 05:48:02,985 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2019-12-28 05:48:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:48:02,999 INFO L93 Difference]: Finished difference Result 3707 states and 6895 transitions. [2019-12-28 05:48:02,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 433 states. [2019-12-28 05:48:02,999 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 95 [2019-12-28 05:48:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:48:03,019 INFO L225 Difference]: With dead ends: 3707 [2019-12-28 05:48:03,020 INFO L226 Difference]: Without dead ends: 3707 [2019-12-28 05:48:03,037 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99309 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=32826, Invalid=199980, Unknown=0, NotChecked=0, Total=232806 [2019-12-28 05:48:03,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3707 states. [2019-12-28 05:48:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3707 to 1216. [2019-12-28 05:48:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2019-12-28 05:48:03,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 2299 transitions. [2019-12-28 05:48:03,108 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 2299 transitions. Word has length 95 [2019-12-28 05:48:03,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:48:03,108 INFO L462 AbstractCegarLoop]: Abstraction has 1216 states and 2299 transitions. [2019-12-28 05:48:03,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 60 states. [2019-12-28 05:48:03,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 2299 transitions. [2019-12-28 05:48:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-12-28 05:48:03,113 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:48:03,114 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-12-28 05:48:03,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:48:03,318 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:48:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:48:03,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1389771624, now seen corresponding path program 5 times [2019-12-28 05:48:03,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:48:03,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213755804] [2019-12-28 05:48:03,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:48:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:48:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:48:03,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213755804] [2019-12-28 05:48:03,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933167856] [2019-12-28 05:48:03,493 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:48:03,569 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-12-28 05:48:03,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-28 05:48:03,571 INFO L264 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-28 05:48:03,573 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:48:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:48:03,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:48:03,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 21 [2019-12-28 05:48:03,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [38256577] [2019-12-28 05:48:03,734 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:48:03,760 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:48:03,869 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 342 states and 587 transitions. [2019-12-28 05:48:03,869 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:48:05,331 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 84 times. [2019-12-28 05:48:05,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2019-12-28 05:48:05,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:48:05,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2019-12-28 05:48:05,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=3671, Unknown=0, NotChecked=0, Total=4032 [2019-12-28 05:48:05,334 INFO L87 Difference]: Start difference. First operand 1216 states and 2299 transitions. Second operand 59 states. [2019-12-28 05:48:26,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:48:26,730 INFO L93 Difference]: Finished difference Result 3850 states and 7215 transitions. [2019-12-28 05:48:26,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2019-12-28 05:48:26,731 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 95 [2019-12-28 05:48:26,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:48:26,746 INFO L225 Difference]: With dead ends: 3850 [2019-12-28 05:48:26,746 INFO L226 Difference]: Without dead ends: 3850 [2019-12-28 05:48:26,752 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 333 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42700 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=17141, Invalid=94749, Unknown=0, NotChecked=0, Total=111890 [2019-12-28 05:48:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2019-12-28 05:48:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 1565. [2019-12-28 05:48:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2019-12-28 05:48:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2970 transitions. [2019-12-28 05:48:26,802 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2970 transitions. Word has length 95 [2019-12-28 05:48:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:48:26,803 INFO L462 AbstractCegarLoop]: Abstraction has 1565 states and 2970 transitions. [2019-12-28 05:48:26,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 59 states. [2019-12-28 05:48:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2970 transitions. [2019-12-28 05:48:26,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-12-28 05:48:26,807 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:48:26,808 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-12-28 05:48:27,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:48:27,011 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:48:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:48:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash -995171012, now seen corresponding path program 6 times [2019-12-28 05:48:27,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:48:27,014 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003394524] [2019-12-28 05:48:27,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:48:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:48:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:48:27,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003394524] [2019-12-28 05:48:27,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536758527] [2019-12-28 05:48:27,304 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:48:27,386 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2019-12-28 05:48:27,386 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-28 05:48:27,387 INFO L264 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-28 05:48:27,389 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:48:27,629 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:48:27,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:48:27,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 26 [2019-12-28 05:48:27,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1689345058] [2019-12-28 05:48:27,630 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:48:27,650 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:48:27,783 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 392 states and 676 transitions. [2019-12-28 05:48:27,783 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:48:29,542 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 90 times. [2019-12-28 05:48:29,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 67 states [2019-12-28 05:48:29,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:48:29,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2019-12-28 05:48:29,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=5222, Unknown=0, NotChecked=0, Total=5700 [2019-12-28 05:48:29,544 INFO L87 Difference]: Start difference. First operand 1565 states and 2970 transitions. Second operand 67 states. [2019-12-28 05:48:37,457 WARN L192 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-12-28 05:48:46,432 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-12-28 05:48:53,041 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2019-12-28 05:48:55,902 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2019-12-28 05:49:01,421 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-12-28 05:49:06,571 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2019-12-28 05:49:07,552 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2019-12-28 05:49:21,481 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2019-12-28 05:49:22,584 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2019-12-28 05:49:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:49:22,597 INFO L93 Difference]: Finished difference Result 6420 states and 11904 transitions. [2019-12-28 05:49:22,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 544 states. [2019-12-28 05:49:22,597 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 106 [2019-12-28 05:49:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:49:22,619 INFO L225 Difference]: With dead ends: 6420 [2019-12-28 05:49:22,619 INFO L226 Difference]: Without dead ends: 6420 [2019-12-28 05:49:22,629 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 601 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158263 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=48877, Invalid=314129, Unknown=0, NotChecked=0, Total=363006 [2019-12-28 05:49:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2019-12-28 05:49:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 1629. [2019-12-28 05:49:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2019-12-28 05:49:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 3089 transitions. [2019-12-28 05:49:22,693 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 3089 transitions. Word has length 106 [2019-12-28 05:49:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:49:22,693 INFO L462 AbstractCegarLoop]: Abstraction has 1629 states and 3089 transitions. [2019-12-28 05:49:22,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 67 states. [2019-12-28 05:49:22,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 3089 transitions. [2019-12-28 05:49:22,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-12-28 05:49:22,698 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:49:22,698 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-12-28 05:49:22,901 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:49:22,902 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:49:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:49:22,902 INFO L82 PathProgramCache]: Analyzing trace with hash -37827740, now seen corresponding path program 7 times [2019-12-28 05:49:22,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:49:22,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297868134] [2019-12-28 05:49:22,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:49:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:49:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:49:23,150 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297868134] [2019-12-28 05:49:23,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304616554] [2019-12-28 05:49:23,151 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:49:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:49:23,222 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-28 05:49:23,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:49:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 53 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-28 05:49:23,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:49:23,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-12-28 05:49:23,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1684784137] [2019-12-28 05:49:23,395 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:49:23,418 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:49:23,597 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 392 states and 676 transitions. [2019-12-28 05:49:23,597 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:49:25,538 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 94 times. [2019-12-28 05:49:25,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 69 states [2019-12-28 05:49:25,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:49:25,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2019-12-28 05:49:25,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=4979, Unknown=0, NotChecked=0, Total=5402 [2019-12-28 05:49:25,540 INFO L87 Difference]: Start difference. First operand 1629 states and 3089 transitions. Second operand 69 states. [2019-12-28 05:49:41,934 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2019-12-28 05:49:44,052 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2019-12-28 05:49:57,852 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2019-12-28 05:49:59,680 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-12-28 05:50:01,394 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 38 [2019-12-28 05:50:04,273 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2019-12-28 05:50:04,764 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2019-12-28 05:50:12,316 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2019-12-28 05:50:14,645 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-12-28 05:50:19,632 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2019-12-28 05:50:24,678 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2019-12-28 05:50:24,832 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2019-12-28 05:50:29,541 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2019-12-28 05:50:29,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:50:29,995 INFO L93 Difference]: Finished difference Result 6361 states and 11857 transitions. [2019-12-28 05:50:29,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 645 states. [2019-12-28 05:50:29,995 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 106 [2019-12-28 05:50:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:50:30,020 INFO L225 Difference]: With dead ends: 6361 [2019-12-28 05:50:30,020 INFO L226 Difference]: Without dead ends: 6361 [2019-12-28 05:50:30,036 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 701 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222950 ImplicationChecksByTransitivity, 60.9s TimeCoverageRelationStatistics Valid=60123, Invalid=433383, Unknown=0, NotChecked=0, Total=493506 [2019-12-28 05:50:30,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2019-12-28 05:50:30,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 1531. [2019-12-28 05:50:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2019-12-28 05:50:30,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2908 transitions. [2019-12-28 05:50:30,086 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2908 transitions. Word has length 106 [2019-12-28 05:50:30,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:50:30,086 INFO L462 AbstractCegarLoop]: Abstraction has 1531 states and 2908 transitions. [2019-12-28 05:50:30,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 69 states. [2019-12-28 05:50:30,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2908 transitions. [2019-12-28 05:50:30,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-12-28 05:50:30,090 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:50:30,090 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2019-12-28 05:50:30,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:50:30,296 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:50:30,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:50:30,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1035706376, now seen corresponding path program 8 times [2019-12-28 05:50:30,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:50:30,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500321115] [2019-12-28 05:50:30,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:50:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:50:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:50:30,521 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500321115] [2019-12-28 05:50:30,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091981593] [2019-12-28 05:50:30,522 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:50:30,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-28 05:50:30,606 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-28 05:50:30,607 INFO L264 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-28 05:50:30,609 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:50:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 45 proven. 18 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-28 05:50:30,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:50:30,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 7] total 22 [2019-12-28 05:50:30,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [823800738] [2019-12-28 05:50:30,705 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:50:30,726 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:50:30,911 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 397 states and 686 transitions. [2019-12-28 05:50:30,912 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:50:33,425 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 99 times. [2019-12-28 05:50:33,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2019-12-28 05:50:33,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:50:33,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2019-12-28 05:50:33,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=4596, Unknown=0, NotChecked=0, Total=4970 [2019-12-28 05:50:33,427 INFO L87 Difference]: Start difference. First operand 1531 states and 2908 transitions. Second operand 66 states. [2019-12-28 05:51:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-28 05:51:03,984 INFO L93 Difference]: Finished difference Result 4239 states and 7939 transitions. [2019-12-28 05:51:03,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 377 states. [2019-12-28 05:51:03,984 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 106 [2019-12-28 05:51:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-28 05:51:03,990 INFO L225 Difference]: With dead ends: 4239 [2019-12-28 05:51:03,990 INFO L226 Difference]: Without dead ends: 4239 [2019-12-28 05:51:03,999 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 167 SyntacticMatches, 2 SemanticMatches, 433 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76735 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=27295, Invalid=161495, Unknown=0, NotChecked=0, Total=188790 [2019-12-28 05:51:04,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2019-12-28 05:51:04,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 1825. [2019-12-28 05:51:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2019-12-28 05:51:04,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 3463 transitions. [2019-12-28 05:51:04,049 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 3463 transitions. Word has length 106 [2019-12-28 05:51:04,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-28 05:51:04,049 INFO L462 AbstractCegarLoop]: Abstraction has 1825 states and 3463 transitions. [2019-12-28 05:51:04,049 INFO L463 AbstractCegarLoop]: Interpolant automaton has 66 states. [2019-12-28 05:51:04,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 3463 transitions. [2019-12-28 05:51:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-12-28 05:51:04,056 INFO L403 BasicCegarLoop]: Found error trace [2019-12-28 05:51:04,057 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2019-12-28 05:51:04,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:51:04,263 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-28 05:51:04,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-28 05:51:04,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2102166008, now seen corresponding path program 9 times [2019-12-28 05:51:04,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-28 05:51:04,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080940431] [2019-12-28 05:51:04,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-28 05:51:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-28 05:51:04,526 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:51:04,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080940431] [2019-12-28 05:51:04,526 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95074005] [2019-12-28 05:51:04,526 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:51:04,641 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-12-28 05:51:04,642 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-28 05:51:04,643 INFO L264 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-28 05:51:04,645 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-28 05:51:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-28 05:51:04,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-28 05:51:04,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 30 [2019-12-28 05:51:04,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [835415140] [2019-12-28 05:51:04,843 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-28 05:51:04,863 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-28 05:51:05,135 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 447 states and 775 transitions. [2019-12-28 05:51:05,135 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-28 05:51:07,726 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 103 times. [2019-12-28 05:51:07,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 74 states [2019-12-28 05:51:07,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-28 05:51:07,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2019-12-28 05:51:07,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=6546, Unknown=0, NotChecked=0, Total=7140 [2019-12-28 05:51:07,728 INFO L87 Difference]: Start difference. First operand 1825 states and 3463 transitions. Second operand 74 states. Received shutdown request... [2019-12-28 05:51:10,989 WARN L209 SmtUtils]: Removed 3 from assertion stack [2019-12-28 05:51:10,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-12-28 05:51:11,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-28 05:51:11,190 WARN L527 AbstractCegarLoop]: Verification canceled [2019-12-28 05:51:11,196 WARN L227 ceAbstractionStarter]: Timeout [2019-12-28 05:51:11,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 05:51:11 BasicIcfg [2019-12-28 05:51:11,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-28 05:51:11,199 INFO L168 Benchmark]: Toolchain (without parser) took 251349.37 ms. Allocated memory was 138.4 MB in the beginning and 2.0 GB in the end (delta: 1.8 GB). Free memory was 101.0 MB in the beginning and 733.1 MB in the end (delta: -632.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2019-12-28 05:51:11,199 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-28 05:51:11,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1026.54 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 106.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2019-12-28 05:51:11,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 202.4 MB. Free memory was 106.7 MB in the beginning and 103.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-12-28 05:51:11,201 INFO L168 Benchmark]: Boogie Preprocessor took 35.38 ms. Allocated memory is still 202.4 MB. Free memory was 103.9 MB in the beginning and 102.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-12-28 05:51:11,202 INFO L168 Benchmark]: RCFGBuilder took 531.16 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 101.9 MB in the beginning and 196.0 MB in the end (delta: -94.1 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. [2019-12-28 05:51:11,203 INFO L168 Benchmark]: TraceAbstraction took 249695.15 ms. Allocated memory was 235.9 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 194.5 MB in the beginning and 733.1 MB in the end (delta: -538.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2019-12-28 05:51:11,208 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1026.54 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 106.7 MB in the end (delta: -6.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.96 ms. Allocated memory is still 202.4 MB. Free memory was 106.7 MB in the beginning and 103.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.38 ms. Allocated memory is still 202.4 MB. Free memory was 103.9 MB in the beginning and 102.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 531.16 ms. Allocated memory was 202.4 MB in the beginning and 235.9 MB in the end (delta: 33.6 MB). Free memory was 101.9 MB in the beginning and 196.0 MB in the end (delta: -94.1 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249695.15 ms. Allocated memory was 235.9 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 194.5 MB in the beginning and 733.1 MB in the end (delta: -538.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (1825states) and FLOYD_HOARE automaton (currently 39 states, 74 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 16 for 18ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 75 locations, 1 error locations. Result: TIMEOUT, OverallTime: 249.5s, OverallIterations: 12, TraceHistogramMax: 5, AutomataDifference: 227.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1492 SDtfs, 27134 SDslu, 32029 SDs, 0 SdLazy, 22586 SolverSat, 7918 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4208 GetRequests, 1230 SyntacticMatches, 7 SemanticMatches, 2970 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624432 ImplicationChecksByTransitivity, 213.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1825occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 18171 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1849 NumberOfCodeBlocks, 1828 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1828 ConstructedInterpolants, 0 QuantifiedInterpolants, 451282 SizeOfPredicates, 53 NumberOfNonLiveVariables, 1897 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 180/993 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown