/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.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 21:54:52,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 21:54:52,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 21:54:52,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 21:54:52,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 21:54:52,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 21:54:52,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 21:54:52,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 21:54:52,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 21:54:52,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 21:54:52,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 21:54:52,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 21:54:52,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 21:54:52,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 21:54:52,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 21:54:52,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 21:54:52,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 21:54:52,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 21:54:52,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 21:54:52,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 21:54:52,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 21:54:52,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 21:54:52,670 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 21:54:52,671 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 21:54:52,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 21:54:52,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 21:54:52,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 21:54:52,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 21:54:52,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 21:54:52,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 21:54:52,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 21:54:52,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 21:54:52,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 21:54:52,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 21:54:52,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 21:54:52,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 21:54:52,680 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 21:54:52,681 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 21:54:52,681 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 21:54:52,682 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 21:54:52,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 21:54:52,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-04-17 21:54:52,701 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 21:54:52,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 21:54:52,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 21:54:52,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 21:54:52,703 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 21:54:52,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 21:54:52,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 21:54:52,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 21:54:52,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 21:54:52,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 21:54:52,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 21:54:52,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 21:54:52,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 21:54:52,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 21:54:52,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 21:54:52,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 21:54:52,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 21:54:52,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 21:54:52,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 21:54:52,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 21:54:52,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 21:54:52,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:54:52,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 21:54:52,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 21:54:52,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 21:54:52,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 21:54:52,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 21:54:52,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 21:54:52,707 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 21:54:52,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 21:54:52,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 21:54:52,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 21:54:52,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 21:54:52,979 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 21:54:52,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2020-04-17 21:54:53,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2563ccba/01058780743d42f5b95bad51dc3622c7/FLAG212383d31 [2020-04-17 21:54:53,627 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 21:54:53,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.opt.i [2020-04-17 21:54:53,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2563ccba/01058780743d42f5b95bad51dc3622c7/FLAG212383d31 [2020-04-17 21:54:53,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2563ccba/01058780743d42f5b95bad51dc3622c7 [2020-04-17 21:54:53,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 21:54:53,962 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 21:54:53,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 21:54:53,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 21:54:53,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 21:54:53,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:54:53" (1/1) ... [2020-04-17 21:54:53,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d96c37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:53, skipping insertion in model container [2020-04-17 21:54:53,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 09:54:53" (1/1) ... [2020-04-17 21:54:53,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 21:54:54,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 21:54:54,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:54:54,575 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 21:54:54,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 21:54:54,728 INFO L208 MainTranslator]: Completed translation [2020-04-17 21:54:54,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54 WrapperNode [2020-04-17 21:54:54,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 21:54:54,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 21:54:54,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 21:54:54,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 21:54:54,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 21:54:54,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 21:54:54,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 21:54:54,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 21:54:54,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... [2020-04-17 21:54:54,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 21:54:54,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 21:54:54,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 21:54:54,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 21:54:54,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 21:54:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 21:54:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 21:54:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 21:54:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 21:54:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 21:54:54,868 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 21:54:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 21:54:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 21:54:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 21:54:54,869 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 21:54:54,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 21:54:54,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 21:54:54,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 21:54:54,871 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 21:54:55,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 21:54:55,273 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 21:54:55,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:54:55 BoogieIcfgContainer [2020-04-17 21:54:55,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 21:54:55,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 21:54:55,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 21:54:55,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 21:54:55,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 09:54:53" (1/3) ... [2020-04-17 21:54:55,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7396c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:54:55, skipping insertion in model container [2020-04-17 21:54:55,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 09:54:54" (2/3) ... [2020-04-17 21:54:55,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7396c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 09:54:55, skipping insertion in model container [2020-04-17 21:54:55,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 09:54:55" (3/3) ... [2020-04-17 21:54:55,288 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.opt.i [2020-04-17 21:54:55,299 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 21:54:55,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 21:54:55,310 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 21:54:55,310 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 21:54:55,345 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,345 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,345 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,346 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,347 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,347 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,347 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,348 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,348 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,348 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,349 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,349 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,349 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,350 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,350 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,350 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,351 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,355 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,356 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,356 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,356 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,362 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,363 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,363 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,363 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,366 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,367 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,367 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,367 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 21:54:55,383 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 21:54:55,405 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 21:54:55,405 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 21:54:55,406 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 21:54:55,406 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 21:54:55,406 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 21:54:55,406 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 21:54:55,406 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 21:54:55,407 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 21:54:55,426 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 21:54:55,429 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 21:54:55,495 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 21:54:55,495 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:54:55,503 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:54:55,506 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 21:54:55,525 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 21:54:55,525 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 21:54:55,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 21:54:55,528 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 21:54:55,529 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 21:54:57,145 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 21:54:57,269 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 21:54:57,269 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 21:54:57,274 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 21:54:57,319 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 21:54:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 21:54:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 21:54:57,336 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:57,337 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:57,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:57,349 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 21:54:57,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:57,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668446067] [2020-04-17 21:54:57,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:57,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668446067] [2020-04-17 21:54:57,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:57,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:54:57,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229942357] [2020-04-17 21:54:57,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 21:54:57,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 21:54:57,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 21:54:57,685 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 21:54:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:57,721 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 21:54:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 21:54:57,722 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 21:54:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:57,742 INFO L225 Difference]: With dead ends: 362 [2020-04-17 21:54:57,742 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 21:54:57,744 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 21:54:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 21:54:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 21:54:57,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 21:54:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 21:54:57,861 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 21:54:57,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:57,864 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 21:54:57,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 21:54:57,864 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 21:54:57,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 21:54:57,866 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:57,868 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:57,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:57,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 21:54:57,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:57,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385728306] [2020-04-17 21:54:57,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:58,026 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385728306] [2020-04-17 21:54:58,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:58,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 21:54:58,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125293172] [2020-04-17 21:54:58,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 21:54:58,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:58,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 21:54:58,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 21:54:58,030 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 21:54:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:58,074 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 21:54:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 21:54:58,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 21:54:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:58,083 INFO L225 Difference]: With dead ends: 330 [2020-04-17 21:54:58,084 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 21:54:58,087 INFO L678 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 [2020-04-17 21:54:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 21:54:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 21:54:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 21:54:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 21:54:58,130 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 21:54:58,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:58,130 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 21:54:58,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 21:54:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 21:54:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 21:54:58,133 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:58,133 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:58,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:58,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:58,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-17 21:54:58,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:58,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422718892] [2020-04-17 21:54:58,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:58,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:58,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422718892] [2020-04-17 21:54:58,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:58,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:54:58,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040670910] [2020-04-17 21:54:58,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:54:58,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:58,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:54:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:54:58,262 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-04-17 21:54:58,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:58,342 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-17 21:54:58,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 21:54:58,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-17 21:54:58,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:58,348 INFO L225 Difference]: With dead ends: 290 [2020-04-17 21:54:58,349 INFO L226 Difference]: Without dead ends: 242 [2020-04-17 21:54:58,349 INFO L678 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 [2020-04-17 21:54:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-17 21:54:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-17 21:54:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-17 21:54:58,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-17 21:54:58,376 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-17 21:54:58,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:58,377 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-17 21:54:58,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:54:58,377 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-17 21:54:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 21:54:58,380 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:58,380 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:58,380 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:58,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1535940786, now seen corresponding path program 1 times [2020-04-17 21:54:58,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:58,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458412650] [2020-04-17 21:54:58,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:58,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458412650] [2020-04-17 21:54:58,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:58,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:54:58,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537439412] [2020-04-17 21:54:58,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:54:58,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:58,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:54:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:54:58,479 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-04-17 21:54:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:58,565 INFO L93 Difference]: Finished difference Result 290 states and 777 transitions. [2020-04-17 21:54:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:54:58,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-17 21:54:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:58,567 INFO L225 Difference]: With dead ends: 290 [2020-04-17 21:54:58,567 INFO L226 Difference]: Without dead ends: 128 [2020-04-17 21:54:58,567 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 21:54:58,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-04-17 21:54:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-04-17 21:54:58,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-04-17 21:54:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 316 transitions. [2020-04-17 21:54:58,573 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 316 transitions. Word has length 11 [2020-04-17 21:54:58,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:58,573 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 316 transitions. [2020-04-17 21:54:58,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:54:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 316 transitions. [2020-04-17 21:54:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 21:54:58,575 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:58,575 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:58,575 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:58,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:58,576 INFO L82 PathProgramCache]: Analyzing trace with hash -762243594, now seen corresponding path program 1 times [2020-04-17 21:54:58,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:58,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094606878] [2020-04-17 21:54:58,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:58,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:58,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094606878] [2020-04-17 21:54:58,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:58,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 21:54:58,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936644391] [2020-04-17 21:54:58,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 21:54:58,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:58,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 21:54:58,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 21:54:58,655 INFO L87 Difference]: Start difference. First operand 128 states and 316 transitions. Second operand 5 states. [2020-04-17 21:54:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:58,724 INFO L93 Difference]: Finished difference Result 170 states and 409 transitions. [2020-04-17 21:54:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 21:54:58,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 21:54:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:58,726 INFO L225 Difference]: With dead ends: 170 [2020-04-17 21:54:58,727 INFO L226 Difference]: Without dead ends: 80 [2020-04-17 21:54:58,731 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 21:54:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-17 21:54:58,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-17 21:54:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-17 21:54:58,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-17 21:54:58,738 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-04-17 21:54:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:58,738 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-17 21:54:58,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 21:54:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-17 21:54:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 21:54:58,745 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 21:54:58,745 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 21:54:58,745 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 21:54:58,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 21:54:58,745 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-17 21:54:58,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 21:54:58,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749623680] [2020-04-17 21:54:58,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 21:54:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 21:54:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 21:54:58,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749623680] [2020-04-17 21:54:58,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 21:54:58,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 21:54:58,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176836893] [2020-04-17 21:54:58,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 21:54:58,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 21:54:58,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 21:54:58,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 21:54:58,877 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 6 states. [2020-04-17 21:54:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 21:54:58,965 INFO L93 Difference]: Finished difference Result 68 states and 144 transitions. [2020-04-17 21:54:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 21:54:58,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-17 21:54:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 21:54:58,966 INFO L225 Difference]: With dead ends: 68 [2020-04-17 21:54:58,966 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 21:54:58,966 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 21:54:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 21:54:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 21:54:58,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 21:54:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 21:54:58,968 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 21:54:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 21:54:58,968 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 21:54:58,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 21:54:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 21:54:58,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 21:54:58,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 09:54:58 BasicIcfg [2020-04-17 21:54:58,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 21:54:58,980 INFO L168 Benchmark]: Toolchain (without parser) took 5030.65 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 101.6 MB in the beginning and 192.1 MB in the end (delta: -90.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:58,981 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-17 21:54:58,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.05 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.5 MB in the beginning and 159.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:58,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.15 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 156.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:58,989 INFO L168 Benchmark]: Boogie Preprocessor took 28.37 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:58,990 INFO L168 Benchmark]: RCFGBuilder took 469.98 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 133.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-04-17 21:54:58,990 INFO L168 Benchmark]: TraceAbstraction took 3696.58 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 133.0 MB in the beginning and 192.1 MB in the end (delta: -59.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 21:54:59,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 138.4 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 766.05 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.5 MB in the beginning and 159.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.15 ms. Allocated memory is still 202.9 MB. Free memory was 159.4 MB in the beginning and 156.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.37 ms. Allocated memory is still 202.9 MB. Free memory was 156.8 MB in the beginning and 155.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 469.98 ms. Allocated memory is still 202.9 MB. Free memory was 155.5 MB in the beginning and 133.0 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3696.58 ms. Allocated memory was 202.9 MB in the beginning and 246.9 MB in the end (delta: 44.0 MB). Free memory was 133.0 MB in the beginning and 192.1 MB in the end (delta: -59.1 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: 1.8s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 121 SDtfs, 163 SDslu, 189 SDs, 0 SdLazy, 88 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 2621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...