/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 23:06:18,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 23:06:18,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 23:06:18,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 23:06:18,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 23:06:18,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 23:06:18,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 23:06:18,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 23:06:18,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 23:06:18,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 23:06:18,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 23:06:18,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 23:06:18,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 23:06:18,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 23:06:18,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 23:06:18,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 23:06:18,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 23:06:18,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 23:06:18,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 23:06:18,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 23:06:18,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 23:06:18,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 23:06:18,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 23:06:18,396 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 23:06:18,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 23:06:18,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 23:06:18,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 23:06:18,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 23:06:18,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 23:06:18,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 23:06:18,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 23:06:18,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 23:06:18,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 23:06:18,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 23:06:18,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 23:06:18,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 23:06:18,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 23:06:18,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 23:06:18,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 23:06:18,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 23:06:18,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 23:06:18,412 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-VariableLbe.epf [2019-12-18 23:06:18,443 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 23:06:18,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 23:06:18,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 23:06:18,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 23:06:18,449 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 23:06:18,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 23:06:18,451 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 23:06:18,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 23:06:18,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 23:06:18,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 23:06:18,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 23:06:18,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 23:06:18,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 23:06:18,453 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 23:06:18,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 23:06:18,453 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 23:06:18,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 23:06:18,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 23:06:18,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 23:06:18,455 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 23:06:18,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 23:06:18,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:06:18,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 23:06:18,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 23:06:18,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 23:06:18,456 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 23:06:18,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 23:06:18,457 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 23:06:18,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 23:06:18,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 23:06:18,737 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 23:06:18,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 23:06:18,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 23:06:18,758 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 23:06:18,758 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 23:06:18,759 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2019-12-18 23:06:18,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d317001/f2284ed0f26d45fc88f07d0b75ff0806/FLAG472a3d28b [2019-12-18 23:06:19,363 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 23:06:19,364 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.oepc.i [2019-12-18 23:06:19,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d317001/f2284ed0f26d45fc88f07d0b75ff0806/FLAG472a3d28b [2019-12-18 23:06:19,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3d317001/f2284ed0f26d45fc88f07d0b75ff0806 [2019-12-18 23:06:19,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 23:06:19,664 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 23:06:19,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 23:06:19,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 23:06:19,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 23:06:19,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:06:19" (1/1) ... [2019-12-18 23:06:19,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d89f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:19, skipping insertion in model container [2019-12-18 23:06:19,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 11:06:19" (1/1) ... [2019-12-18 23:06:19,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 23:06:19,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 23:06:20,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:06:20,196 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 23:06:20,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 23:06:20,337 INFO L208 MainTranslator]: Completed translation [2019-12-18 23:06:20,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20 WrapperNode [2019-12-18 23:06:20,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 23:06:20,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 23:06:20,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 23:06:20,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 23:06:20,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 23:06:20,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 23:06:20,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 23:06:20,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 23:06:20,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... [2019-12-18 23:06:20,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 23:06:20,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 23:06:20,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 23:06:20,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 23:06:20,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 23:06:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 23:06:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 23:06:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 23:06:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 23:06:20,472 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 23:06:20,472 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 23:06:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 23:06:20,473 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 23:06:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 23:06:20,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 23:06:20,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 23:06:20,475 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 23:06:20,809 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 23:06:20,809 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 23:06:20,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:06:20 BoogieIcfgContainer [2019-12-18 23:06:20,811 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 23:06:20,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 23:06:20,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 23:06:20,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 23:06:20,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 11:06:19" (1/3) ... [2019-12-18 23:06:20,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfeb516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:06:20, skipping insertion in model container [2019-12-18 23:06:20,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 11:06:20" (2/3) ... [2019-12-18 23:06:20,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfeb516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 11:06:20, skipping insertion in model container [2019-12-18 23:06:20,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 11:06:20" (3/3) ... [2019-12-18 23:06:20,820 INFO L109 eAbstractionObserver]: Analyzing ICFG safe033_tso.oepc.i [2019-12-18 23:06:20,831 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 23:06:20,831 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 23:06:20,839 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 23:06:20,840 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 23:06:20,864 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,865 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,865 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,865 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,866 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,866 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,867 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,867 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,867 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,871 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,872 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,872 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,872 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,878 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,879 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,879 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,879 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 23:06:20,892 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-18 23:06:20,911 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 23:06:20,911 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 23:06:20,912 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 23:06:20,912 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 23:06:20,912 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 23:06:20,912 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 23:06:20,913 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 23:06:20,913 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 23:06:20,928 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 42 transitions [2019-12-18 23:06:20,930 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions [2019-12-18 23:06:20,979 INFO L126 PetriNetUnfolder]: 1/40 cut-off events. [2019-12-18 23:06:20,979 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:06:20,986 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 1/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs. 6/44 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-18 23:06:20,988 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions [2019-12-18 23:06:21,002 INFO L126 PetriNetUnfolder]: 1/40 cut-off events. [2019-12-18 23:06:21,003 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 23:06:21,004 INFO L76 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 40 events. 1/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 16 event pairs. 6/44 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2019-12-18 23:06:21,005 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 234 [2019-12-18 23:06:21,006 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 23:06:22,225 INFO L206 etLargeBlockEncoding]: Checked pairs total: 275 [2019-12-18 23:06:22,226 INFO L214 etLargeBlockEncoding]: Total number of compositions: 37 [2019-12-18 23:06:22,230 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 16 places, 13 transitions [2019-12-18 23:06:22,239 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 26 states. [2019-12-18 23:06:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-12-18 23:06:22,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-18 23:06:22,247 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:06:22,248 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-18 23:06:22,249 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:06:22,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:06:22,257 INFO L82 PathProgramCache]: Analyzing trace with hash 520246960, now seen corresponding path program 1 times [2019-12-18 23:06:22,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:06:22,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239058824] [2019-12-18 23:06:22,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:06:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:06:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:06:22,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239058824] [2019-12-18 23:06:22,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:06:22,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 23:06:22,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659483376] [2019-12-18 23:06:22,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:06:22,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:06:22,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:06:22,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:06:22,494 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2019-12-18 23:06:22,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:06:22,534 INFO L93 Difference]: Finished difference Result 25 states and 41 transitions. [2019-12-18 23:06:22,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:06:22,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-18 23:06:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:06:22,549 INFO L225 Difference]: With dead ends: 25 [2019-12-18 23:06:22,550 INFO L226 Difference]: Without dead ends: 17 [2019-12-18 23:06:22,553 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:06:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-18 23:06:22,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-12-18 23:06:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-18 23:06:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2019-12-18 23:06:22,622 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 6 [2019-12-18 23:06:22,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:06:22,623 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 25 transitions. [2019-12-18 23:06:22,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:06:22,624 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 25 transitions. [2019-12-18 23:06:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-18 23:06:22,625 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:06:22,626 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:06:22,626 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:06:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:06:22,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1053333326, now seen corresponding path program 1 times [2019-12-18 23:06:22,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:06:22,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836145048] [2019-12-18 23:06:22,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:06:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:06:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:06:22,819 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836145048] [2019-12-18 23:06:22,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:06:22,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:06:22,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015052577] [2019-12-18 23:06:22,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 23:06:22,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:06:22,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 23:06:22,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:06:22,823 INFO L87 Difference]: Start difference. First operand 17 states and 25 transitions. Second operand 5 states. [2019-12-18 23:06:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:06:22,880 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2019-12-18 23:06:22,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 23:06:22,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-12-18 23:06:22,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:06:22,883 INFO L225 Difference]: With dead ends: 16 [2019-12-18 23:06:22,884 INFO L226 Difference]: Without dead ends: 12 [2019-12-18 23:06:22,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-18 23:06:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-18 23:06:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-18 23:06:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-18 23:06:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2019-12-18 23:06:22,889 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2019-12-18 23:06:22,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:06:22,889 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-12-18 23:06:22,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 23:06:22,889 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2019-12-18 23:06:22,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:06:22,890 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:06:22,890 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:06:22,907 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:06:22,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:06:22,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1706464507, now seen corresponding path program 1 times [2019-12-18 23:06:22,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:06:22,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479151732] [2019-12-18 23:06:22,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:06:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:06:23,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:06:23,001 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479151732] [2019-12-18 23:06:23,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:06:23,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 23:06:23,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676883161] [2019-12-18 23:06:23,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 23:06:23,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:06:23,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 23:06:23,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:06:23,003 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 3 states. [2019-12-18 23:06:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:06:23,012 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-12-18 23:06:23,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 23:06:23,012 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 23:06:23,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:06:23,013 INFO L225 Difference]: With dead ends: 14 [2019-12-18 23:06:23,013 INFO L226 Difference]: Without dead ends: 9 [2019-12-18 23:06:23,013 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 23:06:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-18 23:06:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-18 23:06:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-18 23:06:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2019-12-18 23:06:23,016 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2019-12-18 23:06:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:06:23,016 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2019-12-18 23:06:23,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 23:06:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2019-12-18 23:06:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 23:06:23,017 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 23:06:23,017 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 23:06:23,018 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 23:06:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 23:06:23,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1743020947, now seen corresponding path program 2 times [2019-12-18 23:06:23,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 23:06:23,019 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110499326] [2019-12-18 23:06:23,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 23:06:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 23:06:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 23:06:23,075 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110499326] [2019-12-18 23:06:23,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 23:06:23,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 23:06:23,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313468046] [2019-12-18 23:06:23,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 23:06:23,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 23:06:23,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 23:06:23,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 23:06:23,078 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 4 states. [2019-12-18 23:06:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 23:06:23,089 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-12-18 23:06:23,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 23:06:23,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-18 23:06:23,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 23:06:23,090 INFO L225 Difference]: With dead ends: 8 [2019-12-18 23:06:23,090 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 23:06:23,091 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 23:06:23,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 23:06:23,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 23:06:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 23:06:23,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 23:06:23,092 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-12-18 23:06:23,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 23:06:23,092 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 23:06:23,092 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 23:06:23,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 23:06:23,093 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 23:06:23,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 11:06:23 BasicIcfg [2019-12-18 23:06:23,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 23:06:23,100 INFO L168 Benchmark]: Toolchain (without parser) took 3434.66 ms. Allocated memory was 138.4 MB in the beginning and 247.5 MB in the end (delta: 109.1 MB). Free memory was 101.4 MB in the beginning and 203.1 MB in the end (delta: -101.6 MB). Peak memory consumption was 7.4 MB. Max. memory is 7.1 GB. [2019-12-18 23:06:23,101 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-18 23:06:23,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.83 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 160.3 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2019-12-18 23:06:23,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.42 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 23:06:23,103 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 23:06:23,104 INFO L168 Benchmark]: RCFGBuilder took 398.36 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 138.5 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2019-12-18 23:06:23,105 INFO L168 Benchmark]: TraceAbstraction took 2284.51 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 138.5 MB in the beginning and 203.1 MB in the end (delta: -64.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-12-18 23:06:23,109 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 138.4 MB. Free memory was 121.6 MB in the beginning and 121.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 672.83 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 101.0 MB in the beginning and 160.3 MB in the end (delta: -59.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.42 ms. Allocated memory is still 202.9 MB. Free memory was 160.3 MB in the beginning and 158.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 202.9 MB. Free memory was 158.3 MB in the beginning and 157.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.36 ms. Allocated memory is still 202.9 MB. Free memory was 157.0 MB in the beginning and 138.5 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2284.51 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 138.5 MB in the beginning and 203.1 MB in the end (delta: -64.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 48 ProgramPointsBefore, 16 ProgramPointsAfterwards, 42 TransitionsBefore, 13 TransitionsAfterwards, 234 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 141 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 275 CheckedPairsTotal, 37 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 3 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 12 SDslu, 19 SDs, 0 SdLazy, 23 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 399 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...