/usr/bin/java -Xmx16000000000 -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-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 20:21:58,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 20:21:58,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 20:21:58,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 20:21:58,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 20:21:58,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 20:21:58,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 20:21:58,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 20:21:58,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 20:21:58,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 20:21:58,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 20:21:58,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 20:21:58,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 20:21:58,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 20:21:58,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 20:21:58,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 20:21:58,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 20:21:58,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 20:21:58,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 20:21:58,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 20:21:58,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 20:21:58,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 20:21:58,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 20:21:58,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 20:21:58,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 20:21:58,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 20:21:58,480 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 20:21:58,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 20:21:58,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 20:21:58,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 20:21:58,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 20:21:58,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 20:21:58,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 20:21:58,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 20:21:58,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 20:21:58,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 20:21:58,489 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-SemanticLbe.epf [2020-10-15 20:21:58,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 20:21:58,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 20:21:58,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 20:21:58,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 20:21:58,523 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 20:21:58,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 20:21:58,524 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 20:21:58,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 20:21:58,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 20:21:58,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 20:21:58,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 20:21:58,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 20:21:58,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 20:21:58,526 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 20:21:58,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 20:21:58,527 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 20:21:58,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 20:21:58,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 20:21:58,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 20:21:58,528 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 20:21:58,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 20:21:58,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 20:21:58,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 20:21:58,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 20:21:58,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 20:21:58,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 20:21:58,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 20:21:58,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 20:21:58,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 20:21:58,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 20:21:58,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 20:21:58,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 20:21:58,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 20:21:58,820 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 20:21:58,821 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-15 20:21:58,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5758c043a/6d1bf3d63fd34d07959ad65773824705/FLAG07d6464c4 [2020-10-15 20:21:59,459 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 20:21:59,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-15 20:21:59,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5758c043a/6d1bf3d63fd34d07959ad65773824705/FLAG07d6464c4 [2020-10-15 20:21:59,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5758c043a/6d1bf3d63fd34d07959ad65773824705 [2020-10-15 20:21:59,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 20:21:59,767 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 20:21:59,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 20:21:59,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 20:21:59,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 20:21:59,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:21:59" (1/1) ... [2020-10-15 20:21:59,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f44b919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:21:59, skipping insertion in model container [2020-10-15 20:21:59,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:21:59" (1/1) ... [2020-10-15 20:21:59,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 20:21:59,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 20:22:00,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:22:00,356 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 20:22:00,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 20:22:00,473 INFO L208 MainTranslator]: Completed translation [2020-10-15 20:22:00,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00 WrapperNode [2020-10-15 20:22:00,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 20:22:00,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 20:22:00,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 20:22:00,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 20:22:00,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 20:22:00,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 20:22:00,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 20:22:00,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 20:22:00,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (1/1) ... [2020-10-15 20:22:00,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 20:22:00,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 20:22:00,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 20:22:00,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 20:22:00,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (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 [2020-10-15 20:22:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 20:22:00,649 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-15 20:22:00,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-15 20:22:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 20:22:00,650 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 20:22:00,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 20:22:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 20:22:00,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 20:22:00,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 20:22:00,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 20:22:00,655 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 20:22:01,074 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 20:22:01,074 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-15 20:22:01,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:22:01 BoogieIcfgContainer [2020-10-15 20:22:01,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 20:22:01,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 20:22:01,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 20:22:01,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 20:22:01,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:21:59" (1/3) ... [2020-10-15 20:22:01,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5394f315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:22:01, skipping insertion in model container [2020-10-15 20:22:01,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:22:00" (2/3) ... [2020-10-15 20:22:01,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5394f315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:22:01, skipping insertion in model container [2020-10-15 20:22:01,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:22:01" (3/3) ... [2020-10-15 20:22:01,085 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-15 20:22:01,096 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 20:22:01,097 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 20:22:01,103 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-15 20:22:01,104 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 20:22:01,130 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,131 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,131 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,132 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,133 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,134 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,134 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,135 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,136 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,140 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,140 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,149 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,149 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,149 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,150 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 20:22:01,169 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 20:22:01,187 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 20:22:01,187 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 20:22:01,187 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 20:22:01,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 20:22:01,188 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 20:22:01,188 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 20:22:01,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 20:22:01,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 20:22:01,202 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 20:22:01,205 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-15 20:22:01,207 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 103 transitions, 228 flow [2020-10-15 20:22:01,208 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-15 20:22:01,255 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-15 20:22:01,256 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 20:22:01,264 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-15 20:22:01,269 INFO L117 LiptonReduction]: Number of co-enabled transitions 3196 [2020-10-15 20:22:02,554 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-15 20:22:02,636 INFO L132 LiptonReduction]: Checked pairs total: 12166 [2020-10-15 20:22:02,636 INFO L134 LiptonReduction]: Total number of compositions: 52 [2020-10-15 20:22:02,644 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 63 transitions, 148 flow [2020-10-15 20:22:02,689 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 719 states. [2020-10-15 20:22:02,691 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states. [2020-10-15 20:22:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 20:22:02,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:02,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 20:22:02,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:02,706 INFO L82 PathProgramCache]: Analyzing trace with hash 14012195, now seen corresponding path program 1 times [2020-10-15 20:22:02,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:02,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172948398] [2020-10-15 20:22:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:02,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172948398] [2020-10-15 20:22:02,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:02,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:22:02,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861896432] [2020-10-15 20:22:02,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-15 20:22:02,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:02,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-15 20:22:02,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 20:22:02,899 INFO L87 Difference]: Start difference. First operand 719 states. Second operand 2 states. [2020-10-15 20:22:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:02,956 INFO L93 Difference]: Finished difference Result 719 states and 2103 transitions. [2020-10-15 20:22:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-15 20:22:02,957 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2020-10-15 20:22:02,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:02,990 INFO L225 Difference]: With dead ends: 719 [2020-10-15 20:22:02,990 INFO L226 Difference]: Without dead ends: 680 [2020-10-15 20:22:02,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-15 20:22:03,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2020-10-15 20:22:03,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2020-10-15 20:22:03,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-15 20:22:03,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2018 transitions. [2020-10-15 20:22:03,098 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2018 transitions. Word has length 4 [2020-10-15 20:22:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,099 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 2018 transitions. [2020-10-15 20:22:03,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-15 20:22:03,099 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2018 transitions. [2020-10-15 20:22:03,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 20:22:03,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 20:22:03,101 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,102 INFO L82 PathProgramCache]: Analyzing trace with hash -870713509, now seen corresponding path program 1 times [2020-10-15 20:22:03,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614671015] [2020-10-15 20:22:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614671015] [2020-10-15 20:22:03,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:22:03,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855323688] [2020-10-15 20:22:03,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,224 INFO L87 Difference]: Start difference. First operand 680 states and 2018 transitions. Second operand 3 states. [2020-10-15 20:22:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,267 INFO L93 Difference]: Finished difference Result 685 states and 1989 transitions. [2020-10-15 20:22:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-15 20:22:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,273 INFO L225 Difference]: With dead ends: 685 [2020-10-15 20:22:03,273 INFO L226 Difference]: Without dead ends: 568 [2020-10-15 20:22:03,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-15 20:22:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 550. [2020-10-15 20:22:03,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-10-15 20:22:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1644 transitions. [2020-10-15 20:22:03,303 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1644 transitions. Word has length 9 [2020-10-15 20:22:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,304 INFO L481 AbstractCegarLoop]: Abstraction has 550 states and 1644 transitions. [2020-10-15 20:22:03,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1644 transitions. [2020-10-15 20:22:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 20:22:03,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 20:22:03,307 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1073713561, now seen corresponding path program 1 times [2020-10-15 20:22:03,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114334837] [2020-10-15 20:22:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114334837] [2020-10-15 20:22:03,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 20:22:03,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89297165] [2020-10-15 20:22:03,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,352 INFO L87 Difference]: Start difference. First operand 550 states and 1644 transitions. Second operand 3 states. [2020-10-15 20:22:03,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,377 INFO L93 Difference]: Finished difference Result 531 states and 1570 transitions. [2020-10-15 20:22:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-15 20:22:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,382 INFO L225 Difference]: With dead ends: 531 [2020-10-15 20:22:03,382 INFO L226 Difference]: Without dead ends: 408 [2020-10-15 20:22:03,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2020-10-15 20:22:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2020-10-15 20:22:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-15 20:22:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1242 transitions. [2020-10-15 20:22:03,400 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1242 transitions. Word has length 11 [2020-10-15 20:22:03,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,401 INFO L481 AbstractCegarLoop]: Abstraction has 408 states and 1242 transitions. [2020-10-15 20:22:03,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,401 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1242 transitions. [2020-10-15 20:22:03,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 20:22:03,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 20:22:03,406 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,407 INFO L82 PathProgramCache]: Analyzing trace with hash -783095282, now seen corresponding path program 1 times [2020-10-15 20:22:03,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331414014] [2020-10-15 20:22:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331414014] [2020-10-15 20:22:03,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:03,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616829611] [2020-10-15 20:22:03,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,466 INFO L87 Difference]: Start difference. First operand 408 states and 1242 transitions. Second operand 3 states. [2020-10-15 20:22:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,549 INFO L93 Difference]: Finished difference Result 538 states and 1566 transitions. [2020-10-15 20:22:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 20:22:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,554 INFO L225 Difference]: With dead ends: 538 [2020-10-15 20:22:03,554 INFO L226 Difference]: Without dead ends: 424 [2020-10-15 20:22:03,554 INFO L677 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 [2020-10-15 20:22:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-10-15 20:22:03,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 398. [2020-10-15 20:22:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-15 20:22:03,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1161 transitions. [2020-10-15 20:22:03,568 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1161 transitions. Word has length 17 [2020-10-15 20:22:03,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,568 INFO L481 AbstractCegarLoop]: Abstraction has 398 states and 1161 transitions. [2020-10-15 20:22:03,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,569 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1161 transitions. [2020-10-15 20:22:03,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 20:22:03,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 20:22:03,571 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1243088422, now seen corresponding path program 1 times [2020-10-15 20:22:03,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143324814] [2020-10-15 20:22:03,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143324814] [2020-10-15 20:22:03,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:03,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234482987] [2020-10-15 20:22:03,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,606 INFO L87 Difference]: Start difference. First operand 398 states and 1161 transitions. Second operand 3 states. [2020-10-15 20:22:03,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,629 INFO L93 Difference]: Finished difference Result 702 states and 2033 transitions. [2020-10-15 20:22:03,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,629 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 20:22:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,635 INFO L225 Difference]: With dead ends: 702 [2020-10-15 20:22:03,635 INFO L226 Difference]: Without dead ends: 702 [2020-10-15 20:22:03,636 INFO L677 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 [2020-10-15 20:22:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-15 20:22:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 422. [2020-10-15 20:22:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-15 20:22:03,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1239 transitions. [2020-10-15 20:22:03,653 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1239 transitions. Word has length 17 [2020-10-15 20:22:03,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,654 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 1239 transitions. [2020-10-15 20:22:03,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,654 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1239 transitions. [2020-10-15 20:22:03,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 20:22:03,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 20:22:03,656 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1398088036, now seen corresponding path program 2 times [2020-10-15 20:22:03,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920270810] [2020-10-15 20:22:03,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920270810] [2020-10-15 20:22:03,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:03,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253005845] [2020-10-15 20:22:03,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,686 INFO L87 Difference]: Start difference. First operand 422 states and 1239 transitions. Second operand 3 states. [2020-10-15 20:22:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,704 INFO L93 Difference]: Finished difference Result 650 states and 1805 transitions. [2020-10-15 20:22:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 20:22:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,710 INFO L225 Difference]: With dead ends: 650 [2020-10-15 20:22:03,710 INFO L226 Difference]: Without dead ends: 642 [2020-10-15 20:22:03,710 INFO L677 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 [2020-10-15 20:22:03,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-15 20:22:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 456. [2020-10-15 20:22:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-10-15 20:22:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1316 transitions. [2020-10-15 20:22:03,728 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1316 transitions. Word has length 17 [2020-10-15 20:22:03,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,728 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 1316 transitions. [2020-10-15 20:22:03,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1316 transitions. [2020-10-15 20:22:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-15 20:22:03,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 20:22:03,731 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1301572, now seen corresponding path program 2 times [2020-10-15 20:22:03,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43958995] [2020-10-15 20:22:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43958995] [2020-10-15 20:22:03,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:03,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961367661] [2020-10-15 20:22:03,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,756 INFO L87 Difference]: Start difference. First operand 456 states and 1316 transitions. Second operand 3 states. [2020-10-15 20:22:03,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,801 INFO L93 Difference]: Finished difference Result 406 states and 1059 transitions. [2020-10-15 20:22:03,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-15 20:22:03,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,804 INFO L225 Difference]: With dead ends: 406 [2020-10-15 20:22:03,804 INFO L226 Difference]: Without dead ends: 254 [2020-10-15 20:22:03,804 INFO L677 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 [2020-10-15 20:22:03,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-15 20:22:03,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 216. [2020-10-15 20:22:03,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-15 20:22:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 520 transitions. [2020-10-15 20:22:03,812 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 520 transitions. Word has length 17 [2020-10-15 20:22:03,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,812 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 520 transitions. [2020-10-15 20:22:03,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,813 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 520 transitions. [2020-10-15 20:22:03,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 20:22:03,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 20:22:03,814 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,814 INFO L82 PathProgramCache]: Analyzing trace with hash 567307087, now seen corresponding path program 1 times [2020-10-15 20:22:03,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624689325] [2020-10-15 20:22:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624689325] [2020-10-15 20:22:03,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:03,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579876888] [2020-10-15 20:22:03,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,849 INFO L87 Difference]: Start difference. First operand 216 states and 520 transitions. Second operand 3 states. [2020-10-15 20:22:03,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,862 INFO L93 Difference]: Finished difference Result 224 states and 530 transitions. [2020-10-15 20:22:03,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,862 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-15 20:22:03,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,864 INFO L225 Difference]: With dead ends: 224 [2020-10-15 20:22:03,864 INFO L226 Difference]: Without dead ends: 208 [2020-10-15 20:22:03,865 INFO L677 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 [2020-10-15 20:22:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-15 20:22:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-10-15 20:22:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-15 20:22:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 496 transitions. [2020-10-15 20:22:03,871 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 496 transitions. Word has length 19 [2020-10-15 20:22:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,872 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 496 transitions. [2020-10-15 20:22:03,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 496 transitions. [2020-10-15 20:22:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 20:22:03,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:22:03,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:22:03,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 20:22:03,873 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:22:03,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:22:03,874 INFO L82 PathProgramCache]: Analyzing trace with hash 684902644, now seen corresponding path program 1 times [2020-10-15 20:22:03,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:22:03,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602468122] [2020-10-15 20:22:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:22:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:22:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:22:03,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602468122] [2020-10-15 20:22:03,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 20:22:03,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 20:22:03,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926837596] [2020-10-15 20:22:03,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 20:22:03,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:22:03,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 20:22:03,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 20:22:03,925 INFO L87 Difference]: Start difference. First operand 208 states and 496 transitions. Second operand 3 states. [2020-10-15 20:22:03,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:22:03,932 INFO L93 Difference]: Finished difference Result 142 states and 367 transitions. [2020-10-15 20:22:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 20:22:03,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-15 20:22:03,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:22:03,933 INFO L225 Difference]: With dead ends: 142 [2020-10-15 20:22:03,933 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 20:22:03,934 INFO L677 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 [2020-10-15 20:22:03,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 20:22:03,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 20:22:03,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 20:22:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 20:22:03,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-15 20:22:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:22:03,935 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 20:22:03,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 20:22:03,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 20:22:03,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 20:22:03,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 20:22:03,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:22:03 BasicIcfg [2020-10-15 20:22:03,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:22:03,941 INFO L168 Benchmark]: Toolchain (without parser) took 4174.19 ms. Allocated memory was 253.8 MB in the beginning and 372.2 MB in the end (delta: 118.5 MB). Free memory was 209.1 MB in the beginning and 261.6 MB in the end (delta: -52.5 MB). Peak memory consumption was 66.0 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:03,942 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:22:03,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.18 ms. Allocated memory was 253.8 MB in the beginning and 320.9 MB in the end (delta: 67.1 MB). Free memory was 209.1 MB in the beginning and 274.3 MB in the end (delta: -65.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:03,943 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.49 ms. Allocated memory is still 320.9 MB. Free memory was 274.3 MB in the beginning and 271.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:03,944 INFO L168 Benchmark]: Boogie Preprocessor took 40.20 ms. Allocated memory is still 320.9 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:22:03,944 INFO L168 Benchmark]: RCFGBuilder took 512.14 ms. Allocated memory is still 320.9 MB. Free memory was 269.3 MB in the beginning and 244.9 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:03,945 INFO L168 Benchmark]: TraceAbstraction took 2861.78 ms. Allocated memory was 320.9 MB in the beginning and 372.2 MB in the end (delta: 51.4 MB). Free memory was 244.9 MB in the beginning and 261.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 14.2 GB. [2020-10-15 20:22:03,949 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 253.8 MB. Free memory is still 230.1 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 706.18 ms. Allocated memory was 253.8 MB in the beginning and 320.9 MB in the end (delta: 67.1 MB). Free memory was 209.1 MB in the beginning and 274.3 MB in the end (delta: -65.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 48.49 ms. Allocated memory is still 320.9 MB. Free memory was 274.3 MB in the beginning and 271.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 40.20 ms. Allocated memory is still 320.9 MB. Free memory is still 271.8 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 512.14 ms. Allocated memory is still 320.9 MB. Free memory was 269.3 MB in the beginning and 244.9 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2861.78 ms. Allocated memory was 320.9 MB in the beginning and 372.2 MB in the end (delta: 51.4 MB). Free memory was 244.9 MB in the beginning and 261.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1733 VarBasedMoverChecksPositive, 114 VarBasedMoverChecksNegative, 49 SemBasedMoverChecksPositive, 65 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 748 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 84 PlacesBefore, 52 PlacesAfterwards, 103 TransitionsBefore, 63 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 8 ChoiceCompositions, 52 TotalNumberOfCompositions, 12166 MoverChecksTotal - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 542 SDtfs, 221 SDslu, 266 SDs, 0 SdLazy, 93 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=719occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 548 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 3005 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...