/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:08:46,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:08:46,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:08:46,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:08:46,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:08:46,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:08:46,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:08:46,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:08:46,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:08:46,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:08:46,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:08:46,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:08:46,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:08:46,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:08:46,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:08:46,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:08:46,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:08:46,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:08:46,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:08:46,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:08:46,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:08:46,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:08:46,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:08:46,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:08:46,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:08:46,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:08:46,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:08:46,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:08:46,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:08:46,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:08:46,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:08:46,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:08:46,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:08:46,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:08:46,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:08:46,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:08:46,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:08:46,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:08:46,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:08:46,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:08:46,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:08:46,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2020-04-18 02:08:46,949 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:08:46,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:08:46,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:08:46,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:08:46,951 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:08:46,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:08:46,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:08:46,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:08:46,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:08:46,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:08:46,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:08:46,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:08:46,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:08:46,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:08:46,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:08:46,957 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:08:46,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:08:46,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:08:46,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:08:46,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:08:46,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:08:46,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:08:46,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:08:46,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:08:46,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:08:46,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:08:46,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:08:46,961 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:08:46,961 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:08:46,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:08:47,236 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:08:47,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:08:47,258 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:08:47,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:08:47,260 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:08:47,261 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-04-18 02:08:47,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da15c1763/617c871b5c3b4e8d811f17aefe3daaf6/FLAG561572ed0 [2020-04-18 02:08:47,855 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:08:47,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-04-18 02:08:47,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da15c1763/617c871b5c3b4e8d811f17aefe3daaf6/FLAG561572ed0 [2020-04-18 02:08:48,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da15c1763/617c871b5c3b4e8d811f17aefe3daaf6 [2020-04-18 02:08:48,222 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:08:48,244 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:08:48,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:08:48,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:08:48,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:08:48,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:48,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b6625cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48, skipping insertion in model container [2020-04-18 02:08:48,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:48,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:08:48,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:08:48,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:08:48,815 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:08:48,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:08:48,952 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:08:48,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48 WrapperNode [2020-04-18 02:08:48,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:08:48,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:08:48,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:08:48,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:08:48,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:48,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:08:49,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:08:49,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:08:49,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:08:49,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (1/1) ... [2020-04-18 02:08:49,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:08:49,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:08:49,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:08:49,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:08:49,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (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 [2020-04-18 02:08:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:08:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:08:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:08:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:08:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:08:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:08:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:08:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:08:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:08:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:08:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:08:49,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:08:49,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:08:49,096 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 02:08:49,481 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:08:49,481 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:08:49,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:08:49 BoogieIcfgContainer [2020-04-18 02:08:49,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:08:49,487 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:08:49,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:08:49,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:08:49,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:08:48" (1/3) ... [2020-04-18 02:08:49,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1e6749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:08:49, skipping insertion in model container [2020-04-18 02:08:49,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:08:48" (2/3) ... [2020-04-18 02:08:49,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1e6749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:08:49, skipping insertion in model container [2020-04-18 02:08:49,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:08:49" (3/3) ... [2020-04-18 02:08:49,496 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-04-18 02:08:49,506 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:08:49,507 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:08:49,513 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:08:49,514 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:08:49,541 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,541 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,541 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,542 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,542 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,543 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,543 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,543 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,544 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,544 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,544 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,545 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,545 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,545 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,546 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,546 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,546 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,546 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,551 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,552 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,552 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,552 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,559 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,560 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,560 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,560 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,563 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,564 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,564 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,564 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:08:49,582 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:08:49,604 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:08:49,604 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:08:49,604 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:08:49,605 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:08:49,605 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:08:49,605 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:08:49,605 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:08:49,605 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:08:49,622 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-18 02:08:49,624 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:08:49,677 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:08:49,677 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:08:49,683 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 51 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. [2020-04-18 02:08:49,686 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-18 02:08:49,707 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-18 02:08:49,707 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:08:49,708 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 51 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. [2020-04-18 02:08:49,710 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:08:49,712 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:08:51,234 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-04-18 02:08:51,325 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-04-18 02:08:51,326 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-04-18 02:08:51,335 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-18 02:08:51,389 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 02:08:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 02:08:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:08:51,407 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:51,408 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:51,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:51,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:51,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-04-18 02:08:51,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:51,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448926996] [2020-04-18 02:08:51,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:51,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448926996] [2020-04-18 02:08:51,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:51,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:08:51,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370626095] [2020-04-18 02:08:51,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:08:51,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:51,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:08:51,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:08:51,771 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 02:08:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:51,838 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-04-18 02:08:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:08:51,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:08:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:51,875 INFO L225 Difference]: With dead ends: 266 [2020-04-18 02:08:51,875 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:08:51,876 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:08:51,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:08:51,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-04-18 02:08:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-04-18 02:08:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-04-18 02:08:51,942 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-04-18 02:08:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:51,944 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-04-18 02:08:51,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:08:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-04-18 02:08:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:08:51,947 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:51,947 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:51,948 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:51,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-04-18 02:08:51,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:51,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246418228] [2020-04-18 02:08:51,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:52,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:52,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246418228] [2020-04-18 02:08:52,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:52,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:08:52,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961119058] [2020-04-18 02:08:52,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:08:52,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:08:52,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:08:52,068 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-04-18 02:08:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:52,096 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-04-18 02:08:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:08:52,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:08:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:52,099 INFO L225 Difference]: With dead ends: 254 [2020-04-18 02:08:52,100 INFO L226 Difference]: Without dead ends: 190 [2020-04-18 02:08:52,100 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 [2020-04-18 02:08:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-04-18 02:08:52,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-04-18 02:08:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-04-18 02:08:52,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-04-18 02:08:52,130 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-04-18 02:08:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:52,130 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-04-18 02:08:52,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:08:52,131 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-04-18 02:08:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:08:52,132 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:52,132 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:52,133 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:52,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:52,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-04-18 02:08:52,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:52,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330432886] [2020-04-18 02:08:52,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:52,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330432886] [2020-04-18 02:08:52,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:52,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:08:52,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622916072] [2020-04-18 02:08:52,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:08:52,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:52,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:08:52,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:08:52,220 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-04-18 02:08:52,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:52,245 INFO L93 Difference]: Finished difference Result 262 states and 670 transitions. [2020-04-18 02:08:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:08:52,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:08:52,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:52,247 INFO L225 Difference]: With dead ends: 262 [2020-04-18 02:08:52,248 INFO L226 Difference]: Without dead ends: 202 [2020-04-18 02:08:52,248 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:08:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-04-18 02:08:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 178. [2020-04-18 02:08:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-04-18 02:08:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 452 transitions. [2020-04-18 02:08:52,262 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 452 transitions. Word has length 11 [2020-04-18 02:08:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:52,262 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 452 transitions. [2020-04-18 02:08:52,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:08:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 452 transitions. [2020-04-18 02:08:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:08:52,264 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:52,264 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:52,265 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:52,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:52,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-04-18 02:08:52,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:52,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55783581] [2020-04-18 02:08:52,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:52,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55783581] [2020-04-18 02:08:52,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:52,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:08:52,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275251619] [2020-04-18 02:08:52,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:08:52,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:52,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:08:52,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:08:52,308 INFO L87 Difference]: Start difference. First operand 178 states and 452 transitions. Second operand 3 states. [2020-04-18 02:08:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:52,326 INFO L93 Difference]: Finished difference Result 198 states and 492 transitions. [2020-04-18 02:08:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:08:52,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-18 02:08:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:52,328 INFO L225 Difference]: With dead ends: 198 [2020-04-18 02:08:52,328 INFO L226 Difference]: Without dead ends: 72 [2020-04-18 02:08:52,329 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:08:52,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-04-18 02:08:52,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-04-18 02:08:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-04-18 02:08:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-04-18 02:08:52,334 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-04-18 02:08:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:52,334 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-04-18 02:08:52,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:08:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-04-18 02:08:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:08:52,335 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:52,336 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:52,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:52,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:52,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-04-18 02:08:52,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:52,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378934504] [2020-04-18 02:08:52,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:52,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378934504] [2020-04-18 02:08:52,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:52,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:08:52,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612056343] [2020-04-18 02:08:52,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:08:52,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:52,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:08:52,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:08:52,400 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-04-18 02:08:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:52,431 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-04-18 02:08:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:08:52,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-18 02:08:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:52,432 INFO L225 Difference]: With dead ends: 85 [2020-04-18 02:08:52,433 INFO L226 Difference]: Without dead ends: 61 [2020-04-18 02:08:52,433 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 [2020-04-18 02:08:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-04-18 02:08:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-04-18 02:08:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-04-18 02:08:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-04-18 02:08:52,438 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-04-18 02:08:52,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:52,438 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-04-18 02:08:52,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:08:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-04-18 02:08:52,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:08:52,439 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:52,439 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:52,439 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:52,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-04-18 02:08:52,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:52,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082782127] [2020-04-18 02:08:52,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:52,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082782127] [2020-04-18 02:08:52,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:52,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:08:52,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685658148] [2020-04-18 02:08:52,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:08:52,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:52,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:08:52,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:08:52,491 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-04-18 02:08:52,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:52,528 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-04-18 02:08:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:08:52,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:08:52,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:52,530 INFO L225 Difference]: With dead ends: 62 [2020-04-18 02:08:52,530 INFO L226 Difference]: Without dead ends: 47 [2020-04-18 02:08:52,530 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:08:52,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-04-18 02:08:52,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-04-18 02:08:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-04-18 02:08:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-04-18 02:08:52,533 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-04-18 02:08:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:52,533 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-04-18 02:08:52,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:08:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-04-18 02:08:52,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 02:08:52,534 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:52,535 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:52,535 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-04-18 02:08:52,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:52,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611508877] [2020-04-18 02:08:52,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:52,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611508877] [2020-04-18 02:08:52,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:52,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:08:52,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229109933] [2020-04-18 02:08:52,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:08:52,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:08:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:08:52,616 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-04-18 02:08:52,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:52,684 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-04-18 02:08:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-18 02:08:52,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-18 02:08:52,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:52,686 INFO L225 Difference]: With dead ends: 44 [2020-04-18 02:08:52,686 INFO L226 Difference]: Without dead ends: 38 [2020-04-18 02:08:52,687 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:08:52,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-04-18 02:08:52,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-04-18 02:08:52,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-04-18 02:08:52,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-04-18 02:08:52,709 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-04-18 02:08:52,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:52,709 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-04-18 02:08:52,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:08:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-04-18 02:08:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 02:08:52,712 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:08:52,713 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:08:52,713 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:08:52,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:08:52,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-04-18 02:08:52,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:08:52,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985697138] [2020-04-18 02:08:52,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:08:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:08:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:08:52,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985697138] [2020-04-18 02:08:52,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:08:52,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:08:52,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782532328] [2020-04-18 02:08:52,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:08:52,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:08:52,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:08:52,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:08:52,773 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-04-18 02:08:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:08:52,784 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-04-18 02:08:52,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:08:52,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-18 02:08:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:08:52,785 INFO L225 Difference]: With dead ends: 37 [2020-04-18 02:08:52,785 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:08:52,785 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:08:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:08:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:08:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:08:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:08:52,786 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 02:08:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:08:52,787 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:08:52,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:08:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:08:52,787 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:08:52,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:08:52 BasicIcfg [2020-04-18 02:08:52,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:08:52,793 INFO L168 Benchmark]: Toolchain (without parser) took 4569.72 ms. Allocated memory was 137.9 MB in the beginning and 247.5 MB in the end (delta: 109.6 MB). Free memory was 101.3 MB in the beginning and 205.6 MB in the end (delta: -104.3 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:08:52,794 INFO L168 Benchmark]: CDTParser took 1.41 ms. Allocated memory is still 137.9 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:08:52,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.92 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 159.3 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:08:52,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 202.4 MB. Free memory was 159.3 MB in the beginning and 156.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:08:52,797 INFO L168 Benchmark]: Boogie Preprocessor took 23.91 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:08:52,797 INFO L168 Benchmark]: RCFGBuilder took 459.51 ms. Allocated memory is still 202.4 MB. Free memory was 155.2 MB in the beginning and 133.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:08:52,798 INFO L168 Benchmark]: TraceAbstraction took 3303.97 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 132.7 MB in the beginning and 205.6 MB in the end (delta: -72.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:08:52,802 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.41 ms. Allocated memory is still 137.9 MB. Free memory is still 120.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.92 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 99.2 MB in the beginning and 159.3 MB in the end (delta: -60.1 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 202.4 MB. Free memory was 159.3 MB in the beginning and 156.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.91 ms. Allocated memory is still 202.4 MB. Free memory was 156.6 MB in the beginning and 155.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.51 ms. Allocated memory is still 202.4 MB. Free memory was 155.2 MB in the beginning and 133.4 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3303.97 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 132.7 MB in the beginning and 205.6 MB in the end (delta: -72.9 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: 1.7s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 158 SDtfs, 118 SDslu, 158 SDs, 0 SdLazy, 116 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2980 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...