/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/safe009_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 18:11:33,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 18:11:33,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 18:11:33,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 18:11:33,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 18:11:33,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 18:11:33,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 18:11:33,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 18:11:33,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 18:11:33,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 18:11:33,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 18:11:33,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 18:11:33,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 18:11:33,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 18:11:33,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 18:11:33,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 18:11:33,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 18:11:33,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 18:11:33,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 18:11:33,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 18:11:33,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 18:11:33,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 18:11:33,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 18:11:33,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 18:11:33,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 18:11:33,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 18:11:33,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 18:11:33,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 18:11:33,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 18:11:33,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 18:11:33,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 18:11:33,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 18:11:33,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 18:11:33,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 18:11:33,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 18:11:33,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 18:11:33,459 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 18:11:33,489 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 18:11:33,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 18:11:33,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 18:11:33,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 18:11:33,492 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 18:11:33,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 18:11:33,492 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 18:11:33,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 18:11:33,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 18:11:33,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 18:11:33,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 18:11:33,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 18:11:33,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 18:11:33,495 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 18:11:33,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 18:11:33,495 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 18:11:33,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 18:11:33,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 18:11:33,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 18:11:33,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 18:11:33,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 18:11:33,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 18:11:33,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 18:11:33,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 18:11:33,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 18:11:33,497 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 18:11:33,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 18:11:33,497 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2019-12-27 18:11:33,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 18:11:33,498 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2019-12-27 18:11:33,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 18:11:33,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 18:11:33,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 18:11:33,818 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 18:11:33,819 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 18:11:33,820 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 18:11:33,821 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2019-12-27 18:11:33,896 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77b16f4a1/0bb390a4f63047738c6b5738e7ec6470/FLAG17fdd3475 [2019-12-27 18:11:34,438 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 18:11:34,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc.i [2019-12-27 18:11:34,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77b16f4a1/0bb390a4f63047738c6b5738e7ec6470/FLAG17fdd3475 [2019-12-27 18:11:34,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77b16f4a1/0bb390a4f63047738c6b5738e7ec6470 [2019-12-27 18:11:34,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 18:11:34,735 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 18:11:34,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 18:11:34,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 18:11:34,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 18:11:34,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:11:34" (1/1) ... [2019-12-27 18:11:34,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a7d1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:34, skipping insertion in model container [2019-12-27 18:11:34,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 06:11:34" (1/1) ... [2019-12-27 18:11:34,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 18:11:34,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 18:11:35,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:11:35,283 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 18:11:35,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 18:11:35,435 INFO L208 MainTranslator]: Completed translation [2019-12-27 18:11:35,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35 WrapperNode [2019-12-27 18:11:35,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 18:11:35,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 18:11:35,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 18:11:35,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 18:11:35,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 18:11:35,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 18:11:35,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 18:11:35,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 18:11:35,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (1/1) ... [2019-12-27 18:11:35,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 18:11:35,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 18:11:35,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 18:11:35,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 18:11:35,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (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 18:11:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 18:11:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 18:11:35,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 18:11:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 18:11:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 18:11:35,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 18:11:35,598 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 18:11:35,598 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 18:11:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 18:11:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 18:11:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 18:11:35,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 18:11:35,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 18:11:35,601 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 18:11:36,020 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 18:11:36,022 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 18:11:36,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:11:36 BoogieIcfgContainer [2019-12-27 18:11:36,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 18:11:36,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 18:11:36,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 18:11:36,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 18:11:36,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 06:11:34" (1/3) ... [2019-12-27 18:11:36,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b62706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:11:36, skipping insertion in model container [2019-12-27 18:11:36,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 06:11:35" (2/3) ... [2019-12-27 18:11:36,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b62706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 06:11:36, skipping insertion in model container [2019-12-27 18:11:36,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 06:11:36" (3/3) ... [2019-12-27 18:11:36,033 INFO L109 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc.i [2019-12-27 18:11:36,042 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 18:11:36,042 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 18:11:36,051 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 18:11:36,052 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 18:11:36,083 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,084 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,084 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,086 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,087 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,087 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,087 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,087 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,088 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,089 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,089 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,089 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,090 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,090 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,091 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,091 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,091 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,092 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,097 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,097 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,097 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,098 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,103 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,103 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,103 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,103 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,106 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,107 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,107 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,107 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 18:11:36,119 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 18:11:36,139 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 18:11:36,139 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 18:11:36,139 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 18:11:36,139 INFO L376 AbstractCegarLoop]: Backedges is MCR [2019-12-27 18:11:36,140 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 18:11:36,140 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 18:11:36,141 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 18:11:36,142 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 18:11:36,157 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-27 18:11:36,159 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-27 18:11:36,206 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-27 18:11:36,207 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:11:36,213 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. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:11:36,216 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-27 18:11:36,240 INFO L132 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-27 18:11:36,240 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 18:11:36,242 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. 0/48 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 18:11:36,246 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 18:11:36,247 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 18:11:37,759 INFO L206 etLargeBlockEncoding]: Checked pairs total: 444 [2019-12-27 18:11:37,760 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-27 18:11:37,763 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-27 18:11:37,773 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-27 18:11:37,776 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-27 18:11:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 18:11:37,782 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:11:37,783 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:11:37,784 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:11:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:11:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1049428584, now seen corresponding path program 1 times [2019-12-27 18:11:37,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:11:37,802 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127037690] [2019-12-27 18:11:37,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:11:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:11:38,044 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 18:11:38,045 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127037690] [2019-12-27 18:11:38,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:11:38,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:11:38,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1605623039] [2019-12-27 18:11:38,053 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:11:38,064 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:11:38,084 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 9 states and 8 transitions. [2019-12-27 18:11:38,085 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:11:38,089 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:11:38,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:11:38,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:11:38,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:11:38,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:11:38,109 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-27 18:11:38,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:11:38,145 INFO L93 Difference]: Finished difference Result 44 states and 89 transitions. [2019-12-27 18:11:38,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:11:38,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-27 18:11:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:11:38,175 INFO L225 Difference]: With dead ends: 44 [2019-12-27 18:11:38,175 INFO L226 Difference]: Without dead ends: 36 [2019-12-27 18:11:38,177 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 18:11:38,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-27 18:11:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-27 18:11:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-27 18:11:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. [2019-12-27 18:11:38,228 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 8 [2019-12-27 18:11:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:11:38,229 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. [2019-12-27 18:11:38,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:11:38,230 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. [2019-12-27 18:11:38,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:11:38,232 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:11:38,232 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:11:38,233 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:11:38,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:11:38,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1827452116, now seen corresponding path program 1 times [2019-12-27 18:11:38,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:11:38,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122583394] [2019-12-27 18:11:38,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:11:38,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:11:38,372 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 18:11:38,373 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122583394] [2019-12-27 18:11:38,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:11:38,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-27 18:11:38,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1388378203] [2019-12-27 18:11:38,374 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:11:38,375 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:11:38,377 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:11:38,377 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:11:38,378 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:11:38,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:11:38,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:11:38,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:11:38,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:11:38,380 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. [2019-12-27 18:11:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:11:38,386 INFO L93 Difference]: Finished difference Result 34 states and 64 transitions. [2019-12-27 18:11:38,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:11:38,387 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 18:11:38,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:11:38,388 INFO L225 Difference]: With dead ends: 34 [2019-12-27 18:11:38,388 INFO L226 Difference]: Without dead ends: 34 [2019-12-27 18:11:38,389 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 18:11:38,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-27 18:11:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-27 18:11:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-27 18:11:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-27 18:11:38,394 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 9 [2019-12-27 18:11:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:11:38,395 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-27 18:11:38,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:11:38,395 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-27 18:11:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 18:11:38,396 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:11:38,396 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:11:38,396 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:11:38,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:11:38,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1827452178, now seen corresponding path program 1 times [2019-12-27 18:11:38,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:11:38,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734895941] [2019-12-27 18:11:38,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:11:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:11:38,443 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 18:11:38,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734895941] [2019-12-27 18:11:38,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:11:38,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:11:38,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1379003214] [2019-12-27 18:11:38,444 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:11:38,446 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:11:38,452 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 10 states and 9 transitions. [2019-12-27 18:11:38,453 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:11:38,453 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:11:38,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-27 18:11:38,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:11:38,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-27 18:11:38,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-27 18:11:38,454 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-27 18:11:38,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:11:38,479 INFO L93 Difference]: Finished difference Result 36 states and 63 transitions. [2019-12-27 18:11:38,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-27 18:11:38,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-27 18:11:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:11:38,481 INFO L225 Difference]: With dead ends: 36 [2019-12-27 18:11:38,481 INFO L226 Difference]: Without dead ends: 28 [2019-12-27 18:11:38,481 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 [2019-12-27 18:11:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-27 18:11:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-27 18:11:38,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-27 18:11:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2019-12-27 18:11:38,486 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 9 [2019-12-27 18:11:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:11:38,486 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 47 transitions. [2019-12-27 18:11:38,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-27 18:11:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 47 transitions. [2019-12-27 18:11:38,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 18:11:38,487 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:11:38,487 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:11:38,488 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:11:38,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:11:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 816442522, now seen corresponding path program 1 times [2019-12-27 18:11:38,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:11:38,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684988728] [2019-12-27 18:11:38,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:11:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:11:38,531 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 18:11:38,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684988728] [2019-12-27 18:11:38,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:11:38,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:11:38,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1971051787] [2019-12-27 18:11:38,533 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:11:38,534 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:11:38,535 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 11 states and 10 transitions. [2019-12-27 18:11:38,535 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:11:38,536 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 0 times. [2019-12-27 18:11:38,536 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 18:11:38,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:11:38,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 18:11:38,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 18:11:38,537 INFO L87 Difference]: Start difference. First operand 28 states and 47 transitions. Second operand 4 states. [2019-12-27 18:11:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:11:38,558 INFO L93 Difference]: Finished difference Result 33 states and 51 transitions. [2019-12-27 18:11:38,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:11:38,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 18:11:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:11:38,559 INFO L225 Difference]: With dead ends: 33 [2019-12-27 18:11:38,559 INFO L226 Difference]: Without dead ends: 21 [2019-12-27 18:11:38,560 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 18:11:38,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-27 18:11:38,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-12-27 18:11:38,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-27 18:11:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 29 transitions. [2019-12-27 18:11:38,563 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 29 transitions. Word has length 10 [2019-12-27 18:11:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:11:38,563 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 29 transitions. [2019-12-27 18:11:38,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 18:11:38,563 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 29 transitions. [2019-12-27 18:11:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 18:11:38,564 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 18:11:38,564 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 18:11:38,564 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 18:11:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 18:11:38,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1244284059, now seen corresponding path program 1 times [2019-12-27 18:11:38,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 18:11:38,566 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515577838] [2019-12-27 18:11:38,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 18:11:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 18:11:38,637 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 18:11:38,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515577838] [2019-12-27 18:11:38,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 18:11:38,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 18:11:38,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1330905642] [2019-12-27 18:11:38,638 INFO L132 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2019-12-27 18:11:38,639 INFO L197 pAbStrategyModuleMcr]: Started intersection. [2019-12-27 18:11:38,641 INFO L208 pAbStrategyModuleMcr]: Finished intersection with 16 states and 19 transitions. [2019-12-27 18:11:38,642 INFO L219 pAbStrategyModuleMcr]: Constructing interpolant automaton by labelling MCR automaton. [2019-12-27 18:11:38,674 INFO L288 pAbStrategyModuleMcr]: Construction finished. Needed to calculate wp 1 times. [2019-12-27 18:11:38,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 18:11:38,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 18:11:38,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 18:11:38,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 18:11:38,675 INFO L87 Difference]: Start difference. First operand 21 states and 29 transitions. Second operand 5 states. [2019-12-27 18:11:38,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 18:11:38,693 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2019-12-27 18:11:38,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 18:11:38,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-27 18:11:38,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 18:11:38,693 INFO L225 Difference]: With dead ends: 20 [2019-12-27 18:11:38,693 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 18:11:38,694 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-27 18:11:38,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 18:11:38,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 18:11:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 18:11:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 18:11:38,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 18:11:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 18:11:38,695 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 18:11:38,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 18:11:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 18:11:38,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 18:11:38,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 06:11:38 BasicIcfg [2019-12-27 18:11:38,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 18:11:38,702 INFO L168 Benchmark]: Toolchain (without parser) took 3965.30 ms. Allocated memory was 145.2 MB in the beginning and 245.4 MB in the end (delta: 100.1 MB). Free memory was 101.8 MB in the beginning and 147.4 MB in the end (delta: -45.7 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2019-12-27 18:11:38,703 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-27 18:11:38,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 700.04 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.5 MB in the beginning and 159.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-12-27 18:11:38,704 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.16 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 18:11:38,705 INFO L168 Benchmark]: Boogie Preprocessor took 31.43 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:11:38,706 INFO L168 Benchmark]: RCFGBuilder took 496.30 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 135.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-12-27 18:11:38,707 INFO L168 Benchmark]: TraceAbstraction took 2672.73 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 135.6 MB in the beginning and 147.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2019-12-27 18:11:38,711 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.2 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 700.04 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.5 MB in the beginning and 159.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.16 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.43 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.30 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 135.6 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2672.73 ms. Allocated memory was 202.4 MB in the beginning and 245.4 MB in the end (delta: 43.0 MB). Free memory was 135.6 MB in the beginning and 147.4 MB in the end (delta: -11.9 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 13 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 219 VarBasedMoverChecksPositive, 16 VarBasedMoverChecksNegative, 4 SemBasedMoverChecksPositive, 15 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 0 MoverChecksTotal, 444 CheckedPairsTotal, 45 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: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 32 SDslu, 29 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 1 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 962 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...