/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 14:41:59,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 14:41:59,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 14:41:59,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 14:41:59,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 14:41:59,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 14:41:59,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 14:41:59,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 14:41:59,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 14:41:59,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 14:41:59,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 14:41:59,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 14:41:59,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 14:41:59,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 14:41:59,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 14:41:59,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 14:41:59,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 14:41:59,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 14:41:59,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 14:41:59,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 14:41:59,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 14:41:59,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 14:41:59,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 14:41:59,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 14:41:59,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 14:41:59,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 14:41:59,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 14:41:59,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 14:41:59,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 14:41:59,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 14:41:59,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 14:41:59,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 14:41:59,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 14:41:59,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 14:41:59,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 14:41:59,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 14:41:59,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-18 14:41:59,485 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 14:41:59,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 14:41:59,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 14:41:59,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 14:41:59,487 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 14:41:59,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 14:41:59,487 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 14:41:59,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 14:41:59,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 14:41:59,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 14:41:59,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 14:41:59,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 14:41:59,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 14:41:59,489 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 14:41:59,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 14:41:59,489 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 14:41:59,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 14:41:59,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 14:41:59,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 14:41:59,490 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 14:41:59,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 14:41:59,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 14:41:59,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 14:41:59,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 14:41:59,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 14:41:59,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 14:41:59,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 14:41:59,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 14:41:59,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-18 14:41:59,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 14:41:59,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 14:41:59,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 14:41:59,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 14:41:59,811 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 14:41:59,812 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 14:41:59,813 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2019-12-18 14:41:59,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd279361/d99e36a151b94c7fb0e780506f11ade7/FLAGf7bbdc8fd [2019-12-18 14:42:00,415 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 14:42:00,416 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2019-12-18 14:42:00,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd279361/d99e36a151b94c7fb0e780506f11ade7/FLAGf7bbdc8fd [2019-12-18 14:42:00,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd279361/d99e36a151b94c7fb0e780506f11ade7 [2019-12-18 14:42:00,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 14:42:00,751 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 14:42:00,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 14:42:00,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 14:42:00,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 14:42:00,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:42:00" (1/1) ... [2019-12-18 14:42:00,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af34785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:00, skipping insertion in model container [2019-12-18 14:42:00,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:42:00" (1/1) ... [2019-12-18 14:42:00,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 14:42:00,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 14:42:01,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 14:42:01,378 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 14:42:01,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 14:42:01,532 INFO L208 MainTranslator]: Completed translation [2019-12-18 14:42:01,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01 WrapperNode [2019-12-18 14:42:01,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 14:42:01,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 14:42:01,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 14:42:01,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 14:42:01,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 14:42:01,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 14:42:01,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 14:42:01,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 14:42:01,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (1/1) ... [2019-12-18 14:42:01,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 14:42:01,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 14:42:01,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 14:42:01,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 14:42:01,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (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 [2019-12-18 14:42:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 14:42:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 14:42:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 14:42:01,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 14:42:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 14:42:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 14:42:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 14:42:01,686 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 14:42:01,686 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 14:42:01,687 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 14:42:01,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 14:42:01,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 14:42:01,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 14:42:01,691 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 14:42:02,067 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 14:42:02,068 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 14:42:02,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:42:02 BoogieIcfgContainer [2019-12-18 14:42:02,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 14:42:02,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 14:42:02,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 14:42:02,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 14:42:02,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 02:42:00" (1/3) ... [2019-12-18 14:42:02,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8ab870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:42:02, skipping insertion in model container [2019-12-18 14:42:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:42:01" (2/3) ... [2019-12-18 14:42:02,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8ab870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:42:02, skipping insertion in model container [2019-12-18 14:42:02,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:42:02" (3/3) ... [2019-12-18 14:42:02,078 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2019-12-18 14:42:02,088 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 14:42:02,089 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 14:42:02,096 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 14:42:02,097 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 14:42:02,125 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,125 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,126 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,126 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,127 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,127 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,128 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,129 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,129 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,129 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,129 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,130 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,130 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,130 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,131 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,131 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,131 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,132 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,138 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,139 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,139 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,139 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,148 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,148 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,149 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,149 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,151 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,151 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,151 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,152 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 14:42:02,164 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 14:42:02,186 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 14:42:02,186 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 14:42:02,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 14:42:02,186 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 14:42:02,187 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 14:42:02,188 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 14:42:02,188 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 14:42:02,188 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 14:42:02,204 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-18 14:42:02,206 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 14:42:02,245 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 14:42:02,246 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 14:42:02,253 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 14:42:02,258 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 14:42:02,274 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 14:42:02,274 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 14:42:02,276 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 14:42:02,280 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 14:42:02,282 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 14:42:03,760 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-12-18 14:42:03,934 INFO L206 etLargeBlockEncoding]: Checked pairs total: 504 [2019-12-18 14:42:03,934 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-18 14:42:03,938 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 14:42:03,948 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 14:42:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 14:42:03,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 14:42:03,956 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:42:03,957 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:42:03,957 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:42:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:42:03,964 INFO L82 PathProgramCache]: Analyzing trace with hash -411766657, now seen corresponding path program 1 times [2019-12-18 14:42:03,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:42:03,973 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506192197] [2019-12-18 14:42:03,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:42:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:42:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 14:42:04,175 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506192197] [2019-12-18 14:42:04,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:42:04,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 14:42:04,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932381687] [2019-12-18 14:42:04,183 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 14:42:04,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:42:04,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 14:42:04,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:42:04,201 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 14:42:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:42:04,231 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2019-12-18 14:42:04,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 14:42:04,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 14:42:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:42:04,245 INFO L225 Difference]: With dead ends: 44 [2019-12-18 14:42:04,245 INFO L226 Difference]: Without dead ends: 36 [2019-12-18 14:42:04,246 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:42:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-18 14:42:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-18 14:42:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-18 14:42:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-18 14:42:04,282 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-18 14:42:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:42:04,284 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-18 14:42:04,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 14:42:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-18 14:42:04,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 14:42:04,285 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:42:04,285 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:42:04,285 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:42:04,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:42:04,286 INFO L82 PathProgramCache]: Analyzing trace with hash -939565689, now seen corresponding path program 1 times [2019-12-18 14:42:04,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:42:04,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957081963] [2019-12-18 14:42:04,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:42:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:42:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 14:42:04,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957081963] [2019-12-18 14:42:04,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:42:04,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 14:42:04,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541997220] [2019-12-18 14:42:04,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 14:42:04,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:42:04,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 14:42:04,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:42:04,402 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-18 14:42:04,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:42:04,414 INFO L93 Difference]: Finished difference Result 33 states and 61 transitions. [2019-12-18 14:42:04,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 14:42:04,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 14:42:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:42:04,416 INFO L225 Difference]: With dead ends: 33 [2019-12-18 14:42:04,416 INFO L226 Difference]: Without dead ends: 33 [2019-12-18 14:42:04,417 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:42:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-18 14:42:04,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2019-12-18 14:42:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-18 14:42:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 61 transitions. [2019-12-18 14:42:04,423 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 61 transitions. Word has length 9 [2019-12-18 14:42:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:42:04,423 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 61 transitions. [2019-12-18 14:42:04,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 14:42:04,424 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 61 transitions. [2019-12-18 14:42:04,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 14:42:04,424 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:42:04,425 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:42:04,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:42:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:42:04,425 INFO L82 PathProgramCache]: Analyzing trace with hash 934712652, now seen corresponding path program 1 times [2019-12-18 14:42:04,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:42:04,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556565163] [2019-12-18 14:42:04,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:42:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:42:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 14:42:04,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556565163] [2019-12-18 14:42:04,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:42:04,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 14:42:04,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838095778] [2019-12-18 14:42:04,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 14:42:04,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:42:04,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 14:42:04,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:42:04,477 INFO L87 Difference]: Start difference. First operand 33 states and 61 transitions. Second operand 3 states. [2019-12-18 14:42:04,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:42:04,484 INFO L93 Difference]: Finished difference Result 32 states and 59 transitions. [2019-12-18 14:42:04,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 14:42:04,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 14:42:04,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:42:04,486 INFO L225 Difference]: With dead ends: 32 [2019-12-18 14:42:04,486 INFO L226 Difference]: Without dead ends: 32 [2019-12-18 14:42:04,486 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:42:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-18 14:42:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-18 14:42:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 14:42:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 59 transitions. [2019-12-18 14:42:04,491 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 59 transitions. Word has length 10 [2019-12-18 14:42:04,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:42:04,492 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 59 transitions. [2019-12-18 14:42:04,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 14:42:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2019-12-18 14:42:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 14:42:04,493 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:42:04,493 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:42:04,493 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:42:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:42:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -679898138, now seen corresponding path program 1 times [2019-12-18 14:42:04,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:42:04,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758334748] [2019-12-18 14:42:04,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:42:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:42:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 14:42:04,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758334748] [2019-12-18 14:42:04,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:42:04,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 14:42:04,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737355519] [2019-12-18 14:42:04,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 14:42:04,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:42:04,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 14:42:04,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 14:42:04,561 INFO L87 Difference]: Start difference. First operand 32 states and 59 transitions. Second operand 3 states. [2019-12-18 14:42:04,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:42:04,572 INFO L93 Difference]: Finished difference Result 35 states and 61 transitions. [2019-12-18 14:42:04,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 14:42:04,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-18 14:42:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:42:04,573 INFO L225 Difference]: With dead ends: 35 [2019-12-18 14:42:04,574 INFO L226 Difference]: Without dead ends: 21 [2019-12-18 14:42:04,574 INFO L631 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 [2019-12-18 14:42:04,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-18 14:42:04,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-18 14:42:04,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-18 14:42:04,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2019-12-18 14:42:04,577 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2019-12-18 14:42:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:42:04,578 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2019-12-18 14:42:04,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 14:42:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2019-12-18 14:42:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 14:42:04,579 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:42:04,579 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:42:04,579 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:42:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:42:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash 398044178, now seen corresponding path program 1 times [2019-12-18 14:42:04,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:42:04,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756296921] [2019-12-18 14:42:04,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:42:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:42:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 14:42:04,625 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756296921] [2019-12-18 14:42:04,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:42:04,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 14:42:04,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245770588] [2019-12-18 14:42:04,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 14:42:04,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:42:04,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 14:42:04,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 14:42:04,627 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2019-12-18 14:42:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:42:04,654 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2019-12-18 14:42:04,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 14:42:04,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 14:42:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:42:04,655 INFO L225 Difference]: With dead ends: 23 [2019-12-18 14:42:04,656 INFO L226 Difference]: Without dead ends: 15 [2019-12-18 14:42:04,656 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 14:42:04,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-18 14:42:04,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-18 14:42:04,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-18 14:42:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-12-18 14:42:04,659 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2019-12-18 14:42:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:42:04,659 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-12-18 14:42:04,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 14:42:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-12-18 14:42:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 14:42:04,660 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 14:42:04,660 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 14:42:04,660 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 14:42:04,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 14:42:04,661 INFO L82 PathProgramCache]: Analyzing trace with hash -462405218, now seen corresponding path program 2 times [2019-12-18 14:42:04,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 14:42:04,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572996637] [2019-12-18 14:42:04,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 14:42:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 14:42:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 14:42:04,737 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572996637] [2019-12-18 14:42:04,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 14:42:04,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 14:42:04,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622724850] [2019-12-18 14:42:04,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 14:42:04,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 14:42:04,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 14:42:04,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 14:42:04,740 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2019-12-18 14:42:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 14:42:04,762 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2019-12-18 14:42:04,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 14:42:04,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 14:42:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 14:42:04,762 INFO L225 Difference]: With dead ends: 14 [2019-12-18 14:42:04,762 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 14:42:04,763 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 14:42:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 14:42:04,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 14:42:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 14:42:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 14:42:04,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 14:42:04,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 14:42:04,765 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 14:42:04,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 14:42:04,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 14:42:04,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 14:42:04,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 02:42:04 BasicIcfg [2019-12-18 14:42:04,769 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 14:42:04,771 INFO L168 Benchmark]: Toolchain (without parser) took 4020.03 ms. Allocated memory was 145.8 MB in the beginning and 244.3 MB in the end (delta: 98.6 MB). Free memory was 100.7 MB in the beginning and 115.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 84.2 MB. Max. memory is 7.1 GB. [2019-12-18 14:42:04,772 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-12-18 14:42:04,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 780.51 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 160.1 MB in the end (delta: -59.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-12-18 14:42:04,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.61 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-18 14:42:04,775 INFO L168 Benchmark]: Boogie Preprocessor took 29.12 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 14:42:04,775 INFO L168 Benchmark]: RCFGBuilder took 444.69 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 135.6 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2019-12-18 14:42:04,776 INFO L168 Benchmark]: TraceAbstraction took 2698.62 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 135.0 MB in the beginning and 115.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2019-12-18 14:42:04,781 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 780.51 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.5 MB in the beginning and 160.1 MB in the end (delta: -59.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.61 ms. Allocated memory is still 203.4 MB. Free memory was 160.1 MB in the beginning and 158.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.12 ms. Allocated memory is still 203.4 MB. Free memory was 157.5 MB in the beginning and 156.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.69 ms. Allocated memory is still 203.4 MB. Free memory was 156.2 MB in the beginning and 135.6 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2698.62 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 135.0 MB in the beginning and 115.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 246 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 18 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 504 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 14 SDslu, 37 SDs, 0 SdLazy, 30 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 proved your program to be correct! Received shutdown request...