/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-MCR.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 18:44:31,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 18:44:31,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 18:44:31,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 18:44:31,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 18:44:31,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 18:44:31,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 18:44:31,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 18:44:31,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 18:44:31,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 18:44:31,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 18:44:31,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 18:44:31,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 18:44:31,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 18:44:31,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 18:44:31,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 18:44:31,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 18:44:31,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 18:44:31,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 18:44:31,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 18:44:31,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 18:44:31,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 18:44:31,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 18:44:31,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 18:44:31,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 18:44:31,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 18:44:31,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 18:44:31,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 18:44:31,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 18:44:31,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 18:44:31,544 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 18:44:31,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 18:44:31,545 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 18:44:31,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 18:44:31,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 18:44:31,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 18:44:31,549 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-MCR.epf [2019-12-27 18:44:31,568 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 18:44:31,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 18:44:31,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 18:44:31,570 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 18:44:31,570 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 18:44:31,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 18:44:31,570 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 18:44:31,571 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 18:44:31,571 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 18:44:31,571 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 18:44:31,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 18:44:31,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 18:44:31,572 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 18:44:31,573 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 18:44:31,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 18:44:31,573 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 18:44:31,573 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 18:44:31,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 18:44:31,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 18:44:31,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 18:44:31,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 18:44:31,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:44:31,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 18:44:31,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 18:44:31,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 18:44:31,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 18:44:31,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 18:44:31,576 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 18:44:31,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 18:44:31,576 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 18:44:31,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 18:44:31,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 18:44:31,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 18:44:31,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 18:44:31,876 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 18:44:31,877 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 18:44:31,878 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2019-12-27 18:44:31,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c674453b5/511b40991ca94466b0e650a690413dfd/FLAG1bdeb3d70 [2019-12-27 18:44:32,480 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 18:44:32,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc.i [2019-12-27 18:44:32,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c674453b5/511b40991ca94466b0e650a690413dfd/FLAG1bdeb3d70 [2019-12-27 18:44:32,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c674453b5/511b40991ca94466b0e650a690413dfd [2019-12-27 18:44:32,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 18:44:32,762 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 18:44:32,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 18:44:32,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 18:44:32,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 18:44:32,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:44:32" (1/1) ... [2019-12-27 18:44:32,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b5dc4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:32, skipping insertion in model container [2019-12-27 18:44:32,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:44:32" (1/1) ... [2019-12-27 18:44:32,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 18:44:32,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 18:44:33,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:44:33,353 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 18:44:33,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:44:33,537 INFO L208 MainTranslator]: Completed translation [2019-12-27 18:44:33,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33 WrapperNode [2019-12-27 18:44:33,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 18:44:33,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 18:44:33,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 18:44:33,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 18:44:33,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 18:44:33,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 18:44:33,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 18:44:33,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 18:44:33,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (1/1) ... [2019-12-27 18:44:33,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 18:44:33,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 18:44:33,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 18:44:33,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 18:44:33,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (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 [2019-12-27 18:44:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 18:44:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 18:44:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 18:44:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 18:44:33,716 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 18:44:33,716 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 18:44:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 18:44:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 18:44:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 18:44:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 18:44:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 18:44:33,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 18:44:33,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 18:44:33,722 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 18:44:34,108 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 18:44:34,109 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 18:44:34,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:44:34 BoogieIcfgContainer [2019-12-27 18:44:34,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 18:44:34,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 18:44:34,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 18:44:34,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 18:44:34,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 06:44:32" (1/3) ... [2019-12-27 18:44:34,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1635a993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:44:34, skipping insertion in model container [2019-12-27 18:44:34,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:44:33" (2/3) ... [2019-12-27 18:44:34,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1635a993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:44:34, skipping insertion in model container [2019-12-27 18:44:34,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:44:34" (3/3) ... [2019-12-27 18:44:34,118 INFO L109 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc.i [2019-12-27 18:44:34,126 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 18:44:34,126 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 18:44:34,133 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 18:44:34,134 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 18:44:34,160 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,161 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,161 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,162 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,162 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,162 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,163 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,163 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,163 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,163 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,164 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,165 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,165 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,165 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,165 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,165 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,169 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,170 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,178 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,179 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,179 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,179 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,193 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,195 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,195 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,195 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:44:34,211 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 18:44:34,234 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 18:44:34,234 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 18:44:34,234 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 18:44:34,235 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 18:44:34,236 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 18:44:34,236 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 18:44:34,236 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 18:44:34,237 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 18:44:34,252 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-27 18:44:34,254 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:44:34,296 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:44:34,297 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:44:34,303 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:44:34,306 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-27 18:44:34,333 INFO L132 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-27 18:44:34,333 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:44:34,335 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 0/49 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:44:34,337 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 18:44:34,339 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 18:44:35,967 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-27 18:44:36,048 INFO L206 etLargeBlockEncoding]: Checked pairs total: 453 [2019-12-27 18:44:36,048 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-27 18:44:36,053 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 18:44:36,068 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 18:44:36,071 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 18:44:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 18:44:36,081 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:44:36,082 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:44:36,082 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:44:36,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:44:36,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1890044162, now seen corresponding path program 1 times [2019-12-27 18:44:36,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:44:36,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204944910] [2019-12-27 18:44:36,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:44:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:44:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:44:36,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204944910] [2019-12-27 18:44:36,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:44:36,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:44:36,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [725708162] [2019-12-27 18:44:36,382 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:44:36,389 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:44:36,408 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 18:44:36,408 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:44:36,412 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:44:36,413 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:44:36,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:44:36,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:44:36,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:44:36,429 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 18:44:36,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:44:36,460 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-27 18:44:36,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:44:36,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 18:44:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:44:36,489 INFO L225 Difference]: With dead ends: 42 [2019-12-27 18:44:36,490 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 18:44:36,491 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 [2019-12-27 18:44:36,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 18:44:36,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 18:44:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 18:44:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 18:44:36,540 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-27 18:44:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:44:36,541 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 18:44:36,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:44:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 18:44:36,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:44:36,545 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:44:36,545 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:44:36,549 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:44:36,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:44:36,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1538098686, now seen corresponding path program 1 times [2019-12-27 18:44:36,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:44:36,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126812790] [2019-12-27 18:44:36,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:44:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:44:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:44:36,667 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126812790] [2019-12-27 18:44:36,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:44:36,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:44:36,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1299586765] [2019-12-27 18:44:36,668 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:44:36,669 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:44:36,671 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:44:36,672 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:44:36,672 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:44:36,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:44:36,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:44:36,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:44:36,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:44:36,674 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-27 18:44:36,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:44:36,698 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 18:44:36,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:44:36,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-27 18:44:36,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:44:36,700 INFO L225 Difference]: With dead ends: 36 [2019-12-27 18:44:36,700 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 18:44:36,701 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 [2019-12-27 18:44:36,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 18:44:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 18:44:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 18:44:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 18:44:36,705 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 18:44:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:44:36,706 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 18:44:36,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:44:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 18:44:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:44:36,707 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:44:36,707 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:44:36,707 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:44:36,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:44:36,708 INFO L82 PathProgramCache]: Analyzing trace with hash -548239570, now seen corresponding path program 1 times [2019-12-27 18:44:36,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:44:36,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537567074] [2019-12-27 18:44:36,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:44:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:44:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:44:36,844 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537567074] [2019-12-27 18:44:36,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:44:36,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 18:44:36,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1650722513] [2019-12-27 18:44:36,845 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:44:36,846 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:44:36,851 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 13 states and 14 transitions. [2019-12-27 18:44:36,852 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:44:36,854 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:44:36,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 18:44:36,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:44:36,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 18:44:36,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-27 18:44:36,856 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 6 states. [2019-12-27 18:44:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:44:36,956 INFO L93 Difference]: Finished difference Result 28 states and 45 transitions. [2019-12-27 18:44:36,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 18:44:36,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-27 18:44:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:44:36,957 INFO L225 Difference]: With dead ends: 28 [2019-12-27 18:44:36,957 INFO L226 Difference]: Without dead ends: 22 [2019-12-27 18:44:36,958 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-27 18:44:36,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-27 18:44:36,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-27 18:44:36,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-27 18:44:36,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2019-12-27 18:44:36,963 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 10 [2019-12-27 18:44:36,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:44:36,965 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2019-12-27 18:44:36,966 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 18:44:36,966 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2019-12-27 18:44:36,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:44:36,966 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:44:36,966 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:44:36,967 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:44:36,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:44:36,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1277925028, now seen corresponding path program 1 times [2019-12-27 18:44:36,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:44:36,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615168479] [2019-12-27 18:44:36,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:44:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:44:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:44:37,048 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615168479] [2019-12-27 18:44:37,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:44:37,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:44:37,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1566874082] [2019-12-27 18:44:37,049 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:44:37,051 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:44:37,053 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 18 states and 23 transitions. [2019-12-27 18:44:37,054 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:44:37,054 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:44:37,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:44:37,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:44:37,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:44:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:44:37,055 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 4 states. [2019-12-27 18:44:37,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:44:37,081 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2019-12-27 18:44:37,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:44:37,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 18:44:37,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:44:37,082 INFO L225 Difference]: With dead ends: 24 [2019-12-27 18:44:37,082 INFO L226 Difference]: Without dead ends: 14 [2019-12-27 18:44:37,083 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 [2019-12-27 18:44:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-27 18:44:37,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-27 18:44:37,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-27 18:44:37,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-27 18:44:37,085 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-27 18:44:37,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:44:37,085 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-27 18:44:37,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:44:37,086 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-27 18:44:37,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:44:37,086 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:44:37,086 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:44:37,086 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:44:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:44:37,087 INFO L82 PathProgramCache]: Analyzing trace with hash 184515028, now seen corresponding path program 2 times [2019-12-27 18:44:37,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:44:37,087 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927937570] [2019-12-27 18:44:37,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:44:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:44:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 18:44:37,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927937570] [2019-12-27 18:44:37,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:44:37,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 18:44:37,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [767918007] [2019-12-27 18:44:37,138 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:44:37,139 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:44:37,141 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 14 states and 15 transitions. [2019-12-27 18:44:37,142 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:44:37,142 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:44:37,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:44:37,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:44:37,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:44:37,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:44:37,143 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-27 18:44:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:44:37,156 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-27 18:44:37,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:44:37,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 18:44:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:44:37,157 INFO L225 Difference]: With dead ends: 13 [2019-12-27 18:44:37,157 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 18:44:37,157 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 [2019-12-27 18:44:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 18:44:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 18:44:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 18:44:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 18:44:37,158 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 18:44:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:44:37,158 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 18:44:37,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:44:37,159 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 18:44:37,159 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 18:44:37,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 06:44:37 BasicIcfg [2019-12-27 18:44:37,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 18:44:37,165 INFO L168 Benchmark]: Toolchain (without parser) took 4403.95 ms. Allocated memory was 139.5 MB in the beginning and 244.3 MB in the end (delta: 104.9 MB). Free memory was 101.6 MB in the beginning and 104.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 102.0 MB. Max. memory is 7.1 GB. [2019-12-27 18:44:37,168 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-12-27 18:44:37,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.14 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 160.8 MB in the end (delta: -59.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-12-27 18:44:37,176 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.34 ms. Allocated memory is still 204.5 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-27 18:44:37,177 INFO L168 Benchmark]: Boogie Preprocessor took 32.59 ms. Allocated memory is still 204.5 MB. Free memory was 158.8 MB in the beginning and 156.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-27 18:44:37,178 INFO L168 Benchmark]: RCFGBuilder took 455.30 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 136.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-12-27 18:44:37,179 INFO L168 Benchmark]: TraceAbstraction took 3052.01 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 136.7 MB in the beginning and 104.4 MB in the end (delta: 32.3 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. [2019-12-27 18:44:37,190 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 139.5 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.14 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 101.3 MB in the beginning and 160.8 MB in the end (delta: -59.4 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 77.34 ms. Allocated memory is still 204.5 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.59 ms. Allocated memory is still 204.5 MB. Free memory was 158.8 MB in the beginning and 156.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.30 ms. Allocated memory is still 204.5 MB. Free memory was 156.9 MB in the beginning and 136.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3052.01 ms. Allocated memory was 204.5 MB in the beginning and 244.3 MB in the end (delta: 39.8 MB). Free memory was 136.7 MB in the beginning and 104.4 MB in the end (delta: 32.3 MB). Peak memory consumption was 72.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 238 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 14 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 453 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, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 43 SDslu, 50 SDs, 0 SdLazy, 39 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...