/usr/bin/java -Xmx16000000000 -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/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-09 17:35:13,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-09 17:35:13,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-09 17:35:13,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-09 17:35:13,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-09 17:35:13,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-09 17:35:13,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-09 17:35:13,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-09 17:35:13,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-09 17:35:13,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-09 17:35:13,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-09 17:35:13,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-09 17:35:13,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-09 17:35:13,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-09 17:35:13,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-09 17:35:13,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-09 17:35:13,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-09 17:35:13,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-09 17:35:13,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-09 17:35:13,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-09 17:35:13,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-09 17:35:13,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-09 17:35:13,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-09 17:35:13,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-09 17:35:13,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-09 17:35:13,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-09 17:35:13,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-09 17:35:13,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-09 17:35:13,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-09 17:35:13,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-09 17:35:13,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-09 17:35:13,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-09 17:35:13,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-09 17:35:13,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-09 17:35:13,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-09 17:35:13,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-09 17:35:13,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-09 17:35:13,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-09 17:35:13,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-09 17:35:13,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-09 17:35:13,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-09 17:35:13,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-09 17:35:13,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-09 17:35:13,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-09 17:35:13,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-09 17:35:13,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-09 17:35:13,970 INFO L138 SettingsManager]: * Use SBE=true [2020-10-09 17:35:13,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-09 17:35:13,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-09 17:35:13,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-09 17:35:13,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-09 17:35:13,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-09 17:35:13,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-09 17:35:13,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-09 17:35:13,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-09 17:35:13,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-09 17:35:13,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-09 17:35:13,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-09 17:35:13,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-09 17:35:13,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-09 17:35:13,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-09 17:35:13,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-09 17:35:13,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-09 17:35:13,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-09 17:35:13,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-09 17:35:13,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-09 17:35:13,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-09 17:35:13,975 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-10-09 17:35:13,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-09 17:35:13,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-09 17:35:13,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-09 17:35:13,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-09 17:35:14,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-09 17:35:14,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-09 17:35:14,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-09 17:35:14,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-09 17:35:14,304 INFO L275 PluginConnector]: CDTParser initialized [2020-10-09 17:35:14,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-10-09 17:35:14,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d781eab/4e37ebd7811a44f79ad9188d2ccf886c/FLAGa4f1d7453 [2020-10-09 17:35:14,878 INFO L306 CDTParser]: Found 1 translation units. [2020-10-09 17:35:14,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.opt.i [2020-10-09 17:35:14,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d781eab/4e37ebd7811a44f79ad9188d2ccf886c/FLAGa4f1d7453 [2020-10-09 17:35:15,184 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d781eab/4e37ebd7811a44f79ad9188d2ccf886c [2020-10-09 17:35:15,192 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-09 17:35:15,194 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-09 17:35:15,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-09 17:35:15,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-09 17:35:15,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-09 17:35:15,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0ef9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15, skipping insertion in model container [2020-10-09 17:35:15,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-09 17:35:15,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-09 17:35:15,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:35:15,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-09 17:35:15,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-09 17:35:15,868 INFO L208 MainTranslator]: Completed translation [2020-10-09 17:35:15,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15 WrapperNode [2020-10-09 17:35:15,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-09 17:35:15,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-09 17:35:15,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-09 17:35:15,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-09 17:35:15,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-09 17:35:15,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-09 17:35:15,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-09 17:35:15,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-09 17:35:15,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (1/1) ... [2020-10-09 17:35:15,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-09 17:35:15,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-09 17:35:15,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-09 17:35:15,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-09 17:35:15,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (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 [2020-10-09 17:35:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-09 17:35:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-09 17:35:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-09 17:35:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-09 17:35:16,000 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-09 17:35:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-09 17:35:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-09 17:35:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-09 17:35:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-09 17:35:16,001 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-09 17:35:16,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-09 17:35:16,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-09 17:35:16,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-09 17:35:16,003 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-09 17:35:16,367 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-09 17:35:16,367 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-09 17:35:16,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:35:16 BoogieIcfgContainer [2020-10-09 17:35:16,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-09 17:35:16,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-09 17:35:16,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-09 17:35:16,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-09 17:35:16,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.10 05:35:15" (1/3) ... [2020-10-09 17:35:16,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c00f378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:35:16, skipping insertion in model container [2020-10-09 17:35:16,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.10 05:35:15" (2/3) ... [2020-10-09 17:35:16,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c00f378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.10 05:35:16, skipping insertion in model container [2020-10-09 17:35:16,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.10 05:35:16" (3/3) ... [2020-10-09 17:35:16,378 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.opt.i [2020-10-09 17:35:16,390 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-09 17:35:16,397 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-09 17:35:16,398 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-09 17:35:16,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,431 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,432 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,432 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,433 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,433 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,434 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,434 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,438 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,438 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,438 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,439 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,458 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,459 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,459 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,459 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-09 17:35:16,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-09 17:35:16,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-09 17:35:16,512 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-09 17:35:16,512 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-09 17:35:16,512 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-09 17:35:16,512 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-09 17:35:16,512 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-09 17:35:16,513 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-09 17:35:16,513 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-09 17:35:16,526 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 17:35:16,571 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-09 17:35:16,571 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:35:16,576 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-09 17:35:16,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 70 transitions, 155 flow [2020-10-09 17:35:16,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 56 transitions, 121 flow [2020-10-09 17:35:16,602 INFO L129 PetriNetUnfolder]: 1/55 cut-off events. [2020-10-09 17:35:16,603 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:35:16,603 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:35:16,604 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:35:16,605 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:35:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:35:16,611 INFO L82 PathProgramCache]: Analyzing trace with hash -927851968, now seen corresponding path program 1 times [2020-10-09 17:35:16,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:35:16,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965532783] [2020-10-09 17:35:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-09 17:35:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:35:16,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:35:16,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:35:16,853 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:35:16,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:16,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:35:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:16,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965532783] [2020-10-09 17:35:16,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:35:16,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:35:16,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546455296] [2020-10-09 17:35:16,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:35:16,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:35:17,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:35:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:35:17,242 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-09 17:35:17,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 121 flow. Second operand 8 states. [2020-10-09 17:35:17,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:35:17,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-09 17:35:17,247 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:35:17,351 INFO L129 PetriNetUnfolder]: 3/70 cut-off events. [2020-10-09 17:35:17,352 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-09 17:35:17,353 INFO L80 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 70 events. 3/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 4/73 useless extension candidates. Maximal degree in co-relation 75. Up to 7 conditions per place. [2020-10-09 17:35:17,354 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 6 selfloop transitions, 2 changer transitions 11/65 dead transitions. [2020-10-09 17:35:17,354 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 175 flow [2020-10-09 17:35:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:35:17,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:35:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 562 transitions. [2020-10-09 17:35:17,373 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8920634920634921 [2020-10-09 17:35:17,374 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 562 transitions. [2020-10-09 17:35:17,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 562 transitions. [2020-10-09 17:35:17,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:35:17,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 562 transitions. [2020-10-09 17:35:17,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:35:17,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:35:17,394 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:35:17,396 INFO L185 Difference]: Start difference. First operand has 65 places, 56 transitions, 121 flow. Second operand 9 states and 562 transitions. [2020-10-09 17:35:17,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 175 flow [2020-10-09 17:35:17,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 172 flow, removed 0 selfloop flow, removed 3 redundant places. [2020-10-09 17:35:17,406 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 134 flow [2020-10-09 17:35:17,409 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=134, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-09 17:35:17,410 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-09 17:35:17,410 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 134 flow [2020-10-09 17:35:17,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:35:17,411 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:35:17,411 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:35:17,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-09 17:35:17,624 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:35:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:35:17,625 INFO L82 PathProgramCache]: Analyzing trace with hash -6847167, now seen corresponding path program 1 times [2020-10-09 17:35:17,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:35:17,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245912763] [2020-10-09 17:35:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-09 17:35:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:35:17,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:35:17,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:35:17,733 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:35:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:17,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:35:17,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:17,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245912763] [2020-10-09 17:35:17,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:35:17,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:35:17,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357548121] [2020-10-09 17:35:17,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:35:17,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:35:17,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:35:17,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:35:18,031 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-09 17:35:18,032 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 134 flow. Second operand 8 states. [2020-10-09 17:35:18,032 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:35:18,032 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-09 17:35:18,032 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:35:18,134 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-10-09 17:35:18,134 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-09 17:35:18,135 INFO L80 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 77 events. 3/77 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 116. Up to 7 conditions per place. [2020-10-09 17:35:18,135 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/64 dead transitions. [2020-10-09 17:35:18,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 64 transitions, 208 flow [2020-10-09 17:35:18,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:35:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:35:18,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-09 17:35:18,139 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-09 17:35:18,139 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-09 17:35:18,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-09 17:35:18,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:35:18,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-09 17:35:18,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:35:18,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:35:18,143 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:35:18,143 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 134 flow. Second operand 9 states and 560 transitions. [2020-10-09 17:35:18,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 64 transitions, 208 flow [2020-10-09 17:35:18,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 176 flow, removed 14 selfloop flow, removed 8 redundant places. [2020-10-09 17:35:18,147 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 138 flow [2020-10-09 17:35:18,147 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=138, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2020-10-09 17:35:18,148 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2020-10-09 17:35:18,148 INFO L481 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 138 flow [2020-10-09 17:35:18,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:35:18,149 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:35:18,149 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:35:18,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-09 17:35:18,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:35:18,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:35:18,361 INFO L82 PathProgramCache]: Analyzing trace with hash 130586434, now seen corresponding path program 1 times [2020-10-09 17:35:18,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:35:18,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389907885] [2020-10-09 17:35:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-09 17:35:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:35:18,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:35:18,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:35:18,432 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:35:18,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:18,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:35:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:18,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389907885] [2020-10-09 17:35:18,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:35:18,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:35:18,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146552320] [2020-10-09 17:35:18,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:35:18,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:35:18,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:35:18,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:35:18,732 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 70 [2020-10-09 17:35:18,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 138 flow. Second operand 8 states. [2020-10-09 17:35:18,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:35:18,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 70 [2020-10-09 17:35:18,733 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:35:18,871 INFO L129 PetriNetUnfolder]: 18/144 cut-off events. [2020-10-09 17:35:18,871 INFO L130 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2020-10-09 17:35:18,873 INFO L80 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 144 events. 18/144 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 503 event pairs, 0 based on Foata normal form. 5/147 useless extension candidates. Maximal degree in co-relation 242. Up to 15 conditions per place. [2020-10-09 17:35:18,873 INFO L132 encePairwiseOnDemand]: 63/70 looper letters, 10 selfloop transitions, 5 changer transitions 23/83 dead transitions. [2020-10-09 17:35:18,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 83 transitions, 316 flow [2020-10-09 17:35:18,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-09 17:35:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-09 17:35:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 808 transitions. [2020-10-09 17:35:18,877 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8879120879120879 [2020-10-09 17:35:18,877 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 808 transitions. [2020-10-09 17:35:18,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 808 transitions. [2020-10-09 17:35:18,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:35:18,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 808 transitions. [2020-10-09 17:35:18,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-09 17:35:18,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-09 17:35:18,882 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-09 17:35:18,882 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 138 flow. Second operand 13 states and 808 transitions. [2020-10-09 17:35:18,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 83 transitions, 316 flow [2020-10-09 17:35:18,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 264 flow, removed 24 selfloop flow, removed 8 redundant places. [2020-10-09 17:35:18,887 INFO L241 Difference]: Finished difference. Result has 86 places, 56 transitions, 164 flow [2020-10-09 17:35:18,887 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=164, PETRI_PLACES=86, PETRI_TRANSITIONS=56} [2020-10-09 17:35:18,888 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 21 predicate places. [2020-10-09 17:35:18,888 INFO L481 AbstractCegarLoop]: Abstraction has has 86 places, 56 transitions, 164 flow [2020-10-09 17:35:18,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:35:18,888 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:35:18,888 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:35:19,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-09 17:35:19,101 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:35:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:35:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash 169907846, now seen corresponding path program 1 times [2020-10-09 17:35:19,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:35:19,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081876137] [2020-10-09 17:35:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-09 17:35:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:35:19,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-09 17:35:19,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:35:19,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:35:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:19,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:35:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:19,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081876137] [2020-10-09 17:35:19,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:35:19,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2020-10-09 17:35:19,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156607713] [2020-10-09 17:35:19,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-09 17:35:19,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:35:19,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-09 17:35:19,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-09 17:35:19,456 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 70 [2020-10-09 17:35:19,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 56 transitions, 164 flow. Second operand 8 states. [2020-10-09 17:35:19,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:35:19,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 70 [2020-10-09 17:35:19,457 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:35:19,543 INFO L129 PetriNetUnfolder]: 6/106 cut-off events. [2020-10-09 17:35:19,544 INFO L130 PetriNetUnfolder]: For 109/113 co-relation queries the response was YES. [2020-10-09 17:35:19,545 INFO L80 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 106 events. 6/106 cut-off events. For 109/113 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 327 event pairs, 0 based on Foata normal form. 4/108 useless extension candidates. Maximal degree in co-relation 205. Up to 12 conditions per place. [2020-10-09 17:35:19,545 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 6 selfloop transitions, 2 changer transitions 10/66 dead transitions. [2020-10-09 17:35:19,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 66 transitions, 252 flow [2020-10-09 17:35:19,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-09 17:35:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-09 17:35:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2020-10-09 17:35:19,548 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2020-10-09 17:35:19,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2020-10-09 17:35:19,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2020-10-09 17:35:19,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:35:19,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2020-10-09 17:35:19,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-09 17:35:19,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-09 17:35:19,552 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-09 17:35:19,552 INFO L185 Difference]: Start difference. First operand has 86 places, 56 transitions, 164 flow. Second operand 9 states and 560 transitions. [2020-10-09 17:35:19,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 66 transitions, 252 flow [2020-10-09 17:35:19,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 210 flow, removed 21 selfloop flow, removed 9 redundant places. [2020-10-09 17:35:19,556 INFO L241 Difference]: Finished difference. Result has 83 places, 56 transitions, 166 flow [2020-10-09 17:35:19,557 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=83, PETRI_TRANSITIONS=56} [2020-10-09 17:35:19,557 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2020-10-09 17:35:19,557 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 56 transitions, 166 flow [2020-10-09 17:35:19,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-09 17:35:19,557 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:35:19,558 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:35:19,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-09 17:35:19,772 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:35:19,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:35:19,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1035467569, now seen corresponding path program 1 times [2020-10-09 17:35:19,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:35:19,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712084273] [2020-10-09 17:35:19,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-09 17:35:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:35:19,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:35:19,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:35:19,877 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:35:19,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:19,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:35:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:19,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712084273] [2020-10-09 17:35:19,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:35:19,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:35:19,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574025449] [2020-10-09 17:35:19,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:35:19,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:35:19,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:35:19,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:35:20,210 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:35:20,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 56 transitions, 166 flow. Second operand 9 states. [2020-10-09 17:35:20,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:35:20,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:35:20,211 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:35:20,297 INFO L129 PetriNetUnfolder]: 3/89 cut-off events. [2020-10-09 17:35:20,297 INFO L130 PetriNetUnfolder]: For 93/134 co-relation queries the response was YES. [2020-10-09 17:35:20,298 INFO L80 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 89 events. 3/89 cut-off events. For 93/134 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 4/92 useless extension candidates. Maximal degree in co-relation 176. Up to 8 conditions per place. [2020-10-09 17:35:20,298 INFO L132 encePairwiseOnDemand]: 61/70 looper letters, 7 selfloop transitions, 4 changer transitions 11/65 dead transitions. [2020-10-09 17:35:20,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 65 transitions, 259 flow [2020-10-09 17:35:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-09 17:35:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-09 17:35:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 422 transitions. [2020-10-09 17:35:20,301 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8612244897959184 [2020-10-09 17:35:20,301 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 422 transitions. [2020-10-09 17:35:20,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 422 transitions. [2020-10-09 17:35:20,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:35:20,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 422 transitions. [2020-10-09 17:35:20,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 8 states. [2020-10-09 17:35:20,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 8 states. [2020-10-09 17:35:20,304 INFO L81 ComplementDD]: Finished complementDD. Result 8 states. [2020-10-09 17:35:20,304 INFO L185 Difference]: Start difference. First operand has 83 places, 56 transitions, 166 flow. Second operand 7 states and 422 transitions. [2020-10-09 17:35:20,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 65 transitions, 259 flow [2020-10-09 17:35:20,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 235 flow, removed 10 selfloop flow, removed 8 redundant places. [2020-10-09 17:35:20,308 INFO L241 Difference]: Finished difference. Result has 79 places, 54 transitions, 160 flow [2020-10-09 17:35:20,308 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=79, PETRI_TRANSITIONS=54} [2020-10-09 17:35:20,308 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 14 predicate places. [2020-10-09 17:35:20,309 INFO L481 AbstractCegarLoop]: Abstraction has has 79 places, 54 transitions, 160 flow [2020-10-09 17:35:20,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:35:20,309 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:35:20,309 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:35:20,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-09 17:35:20,522 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:35:20,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:35:20,523 INFO L82 PathProgramCache]: Analyzing trace with hash -725384443, now seen corresponding path program 1 times [2020-10-09 17:35:20,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:35:20,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645681193] [2020-10-09 17:35:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-10-09 17:35:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:35:20,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:35:20,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:35:20,612 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:35:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:20,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:35:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:20,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645681193] [2020-10-09 17:35:20,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:35:20,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-10-09 17:35:20,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874399205] [2020-10-09 17:35:20,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-09 17:35:20,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:35:20,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-09 17:35:20,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-09 17:35:20,888 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 70 [2020-10-09 17:35:20,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 54 transitions, 160 flow. Second operand 9 states. [2020-10-09 17:35:20,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:35:20,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 70 [2020-10-09 17:35:20,889 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:35:21,011 INFO L129 PetriNetUnfolder]: 4/80 cut-off events. [2020-10-09 17:35:21,011 INFO L130 PetriNetUnfolder]: For 92/111 co-relation queries the response was YES. [2020-10-09 17:35:21,012 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 80 events. 4/80 cut-off events. For 92/111 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 0 based on Foata normal form. 3/83 useless extension candidates. Maximal degree in co-relation 154. Up to 7 conditions per place. [2020-10-09 17:35:21,012 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 6 selfloop transitions, 4 changer transitions 12/66 dead transitions. [2020-10-09 17:35:21,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 66 transitions, 261 flow [2020-10-09 17:35:21,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-09 17:35:21,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-09 17:35:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 604 transitions. [2020-10-09 17:35:21,015 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8628571428571429 [2020-10-09 17:35:21,016 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 604 transitions. [2020-10-09 17:35:21,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 604 transitions. [2020-10-09 17:35:21,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:35:21,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 604 transitions. [2020-10-09 17:35:21,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-09 17:35:21,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-09 17:35:21,019 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-09 17:35:21,020 INFO L185 Difference]: Start difference. First operand has 79 places, 54 transitions, 160 flow. Second operand 10 states and 604 transitions. [2020-10-09 17:35:21,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 66 transitions, 261 flow [2020-10-09 17:35:21,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 66 transitions, 219 flow, removed 13 selfloop flow, removed 10 redundant places. [2020-10-09 17:35:21,023 INFO L241 Difference]: Finished difference. Result has 83 places, 54 transitions, 164 flow [2020-10-09 17:35:21,023 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=83, PETRI_TRANSITIONS=54} [2020-10-09 17:35:21,023 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 18 predicate places. [2020-10-09 17:35:21,024 INFO L481 AbstractCegarLoop]: Abstraction has has 83 places, 54 transitions, 164 flow [2020-10-09 17:35:21,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-09 17:35:21,024 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-09 17:35:21,024 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-09 17:35:21,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-10-09 17:35:21,236 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-09 17:35:21,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-09 17:35:21,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1578208619, now seen corresponding path program 1 times [2020-10-09 17:35:21,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-10-09 17:35:21,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295813195] [2020-10-09 17:35:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-10-09 17:35:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-09 17:35:21,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-09 17:35:21,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-09 17:35:21,326 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-09 17:35:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:21,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-09 17:35:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-09 17:35:21,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295813195] [2020-10-09 17:35:21,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-09 17:35:21,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-10-09 17:35:21,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682737425] [2020-10-09 17:35:21,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-09 17:35:21,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-10-09 17:35:21,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-09 17:35:21,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-09 17:35:21,782 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 70 [2020-10-09 17:35:21,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 54 transitions, 164 flow. Second operand 10 states. [2020-10-09 17:35:21,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-09 17:35:21,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 70 [2020-10-09 17:35:21,783 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-09 17:35:21,848 INFO L129 PetriNetUnfolder]: 0/52 cut-off events. [2020-10-09 17:35:21,849 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2020-10-09 17:35:21,849 INFO L80 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 52 events. 0/52 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2020-10-09 17:35:21,850 INFO L132 encePairwiseOnDemand]: 62/70 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2020-10-09 17:35:21,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 52 transitions, 176 flow [2020-10-09 17:35:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-09 17:35:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-10-09 17:35:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 467 transitions. [2020-10-09 17:35:21,851 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.8339285714285715 [2020-10-09 17:35:21,852 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 467 transitions. [2020-10-09 17:35:21,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 467 transitions. [2020-10-09 17:35:21,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-09 17:35:21,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 467 transitions. [2020-10-09 17:35:21,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 9 states. [2020-10-09 17:35:21,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 9 states. [2020-10-09 17:35:21,855 INFO L81 ComplementDD]: Finished complementDD. Result 9 states. [2020-10-09 17:35:21,855 INFO L185 Difference]: Start difference. First operand has 83 places, 54 transitions, 164 flow. Second operand 8 states and 467 transitions. [2020-10-09 17:35:21,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 52 transitions, 176 flow [2020-10-09 17:35:21,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 52 transitions, 154 flow, removed 6 selfloop flow, removed 8 redundant places. [2020-10-09 17:35:21,857 INFO L241 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2020-10-09 17:35:21,857 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2020-10-09 17:35:21,858 INFO L341 CegarLoopForPetriNet]: 65 programPoint places, 9 predicate places. [2020-10-09 17:35:21,858 INFO L481 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2020-10-09 17:35:21,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-09 17:35:22,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-10-09 17:35:22,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.10 05:35:22 BasicIcfg [2020-10-09 17:35:22,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-09 17:35:22,077 INFO L168 Benchmark]: Toolchain (without parser) took 6883.05 ms. Allocated memory was 255.9 MB in the beginning and 424.1 MB in the end (delta: 168.3 MB). Free memory was 211.0 MB in the beginning and 374.4 MB in the end (delta: -163.4 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.2 GB. [2020-10-09 17:35:22,078 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 232.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:35:22,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.69 ms. Allocated memory was 255.9 MB in the beginning and 324.5 MB in the end (delta: 68.7 MB). Free memory was 211.0 MB in the beginning and 277.9 MB in the end (delta: -66.9 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:35:22,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.16 ms. Allocated memory is still 324.5 MB. Free memory was 277.9 MB in the beginning and 275.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:35:22,081 INFO L168 Benchmark]: Boogie Preprocessor took 26.87 ms. Allocated memory is still 324.5 MB. Free memory was 275.4 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-09 17:35:22,081 INFO L168 Benchmark]: RCFGBuilder took 427.54 ms. Allocated memory is still 324.5 MB. Free memory was 272.8 MB in the beginning and 251.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. [2020-10-09 17:35:22,082 INFO L168 Benchmark]: TraceAbstraction took 5703.93 ms. Allocated memory was 324.5 MB in the beginning and 424.1 MB in the end (delta: 99.6 MB). Free memory was 251.0 MB in the beginning and 374.4 MB in the end (delta: -123.4 MB). There was no memory consumed. Max. memory is 14.2 GB. [2020-10-09 17:35:22,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 255.9 MB. Free memory is still 232.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 673.69 ms. Allocated memory was 255.9 MB in the beginning and 324.5 MB in the end (delta: 68.7 MB). Free memory was 211.0 MB in the beginning and 277.9 MB in the end (delta: -66.9 MB). Peak memory consumption was 29.5 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.16 ms. Allocated memory is still 324.5 MB. Free memory was 277.9 MB in the beginning and 275.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 26.87 ms. Allocated memory is still 324.5 MB. Free memory was 275.4 MB in the beginning and 272.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 427.54 ms. Allocated memory is still 324.5 MB. Free memory was 272.8 MB in the beginning and 251.0 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 14.2 GB. * TraceAbstraction took 5703.93 ms. Allocated memory was 324.5 MB in the beginning and 424.1 MB in the end (delta: 99.6 MB). Free memory was 251.0 MB in the beginning and 374.4 MB in the end (delta: -123.4 MB). There was no memory consumed. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 69 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 5.5s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 289 SDslu, 686 SDs, 0 SdLazy, 498 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 498 SyntacticMatches, 16 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 560 ConstructedInterpolants, 0 QuantifiedInterpolants, 63814 SizeOfPredicates, 73 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...