/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/thin001_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:54:51,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:54:51,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:54:51,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:54:51,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:54:51,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:54:51,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:54:51,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:54:51,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:54:51,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:54:51,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:54:51,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:54:51,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:54:51,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:54:51,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:54:51,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:54:51,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:54:51,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:54:51,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:54:51,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:54:51,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:54:51,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:54:51,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:54:51,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:54:51,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:54:51,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:54:51,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:54:51,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:54:51,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:54:51,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:54:51,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:54:51,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:54:51,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:54:51,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:54:51,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:54:51,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:54:51,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:54:51,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:54:51,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:54:51,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:54:51,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:54:51,873 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 02:54:51,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:54:51,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:54:51,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:54:51,911 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:54:51,912 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:54:51,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:54:51,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:54:51,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:54:51,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:54:51,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:54:51,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:54:51,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:54:51,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:54:51,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:54:51,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:54:51,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:54:51,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:54:51,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:54:51,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:54:51,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:54:51,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:54:51,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:54:51,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:54:51,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:54:51,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:54:51,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:54:51,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:54:51,919 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:54:51,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:54:51,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:54:52,179 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:54:52,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:54:52,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:54:52,202 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:54:52,202 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:54:52,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2020-04-18 02:54:52,274 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d39b8a6/17b15a5e0ba340088749902b30823702/FLAG25a745599 [2020-04-18 02:54:52,794 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:54:52,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_pso.opt.i [2020-04-18 02:54:52,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d39b8a6/17b15a5e0ba340088749902b30823702/FLAG25a745599 [2020-04-18 02:54:53,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40d39b8a6/17b15a5e0ba340088749902b30823702 [2020-04-18 02:54:53,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:54:53,180 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:54:53,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:54:53,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:54:53,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:54:53,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bfdcf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53, skipping insertion in model container [2020-04-18 02:54:53,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:54:53,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:54:53,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:54:53,735 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:54:53,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:54:53,876 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:54:53,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53 WrapperNode [2020-04-18 02:54:53,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:54:53,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:54:53,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:54:53,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:54:53,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:54:53,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:54:53,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:54:53,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:54:53,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (1/1) ... [2020-04-18 02:54:53,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:54:53,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:54:53,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:54:53,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:54:53,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (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 02:54:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:54:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:54:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:54:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:54:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:54:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:54:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:54:54,026 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:54:54,026 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:54:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:54:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:54:54,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:54:54,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:54:54,028 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 02:54:54,413 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:54:54,413 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:54:54,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:54:54 BoogieIcfgContainer [2020-04-18 02:54:54,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:54:54,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:54:54,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:54:54,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:54:54,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:54:53" (1/3) ... [2020-04-18 02:54:54,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f176557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:54:54, skipping insertion in model container [2020-04-18 02:54:54,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:54:53" (2/3) ... [2020-04-18 02:54:54,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f176557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:54:54, skipping insertion in model container [2020-04-18 02:54:54,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:54:54" (3/3) ... [2020-04-18 02:54:54,432 INFO L109 eAbstractionObserver]: Analyzing ICFG thin001_pso.opt.i [2020-04-18 02:54:54,441 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:54:54,442 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:54:54,448 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:54:54,449 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:54:54,484 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,484 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,484 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,485 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,486 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,486 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,486 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,487 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,487 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,487 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,488 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,488 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,490 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,491 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,491 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,491 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,492 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,492 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,499 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,500 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,500 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,500 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,508 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,509 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,509 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,509 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,516 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,517 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,517 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,517 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:54:54,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:54:54,545 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:54:54,545 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:54:54,545 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:54:54,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:54:54,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:54:54,546 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:54:54,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:54:54,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:54:54,560 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-18 02:54:54,561 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:54:54,604 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:54:54,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:54:54,609 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:54:54,612 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-18 02:54:54,635 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-18 02:54:54,635 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:54:54,636 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 02:54:54,638 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 02:54:54,640 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:54:55,879 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-18 02:54:55,990 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-18 02:54:55,990 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-18 02:54:55,994 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-18 02:54:56,022 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-18 02:54:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-18 02:54:56,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:54:56,032 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:54:56,033 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:54:56,033 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:54:56,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:54:56,039 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-18 02:54:56,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:54:56,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140877795] [2020-04-18 02:54:56,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:54:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:54:56,257 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 02:54:56,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140877795] [2020-04-18 02:54:56,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:54:56,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:54:56,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522224989] [2020-04-18 02:54:56,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-18 02:54:56,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:54:56,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-18 02:54:56,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:54:56,288 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-18 02:54:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:54:56,322 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-18 02:54:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-18 02:54:56,323 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-18 02:54:56,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:54:56,343 INFO L225 Difference]: With dead ends: 362 [2020-04-18 02:54:56,343 INFO L226 Difference]: Without dead ends: 298 [2020-04-18 02:54:56,345 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-18 02:54:56,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-18 02:54:56,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-18 02:54:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-18 02:54:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-18 02:54:56,420 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-18 02:54:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:54:56,421 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-18 02:54:56,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-18 02:54:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-18 02:54:56,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:54:56,425 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:54:56,425 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:54:56,426 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:54:56,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:54:56,429 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-18 02:54:56,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:54:56,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104466822] [2020-04-18 02:54:56,430 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:54:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:54:56,565 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 02:54:56,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104466822] [2020-04-18 02:54:56,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:54:56,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:54:56,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364404305] [2020-04-18 02:54:56,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:54:56,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:54:56,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:54:56,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:54:56,570 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-18 02:54:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:54:56,622 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-18 02:54:56,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:54:56,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-18 02:54:56,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:54:56,631 INFO L225 Difference]: With dead ends: 330 [2020-04-18 02:54:56,631 INFO L226 Difference]: Without dead ends: 266 [2020-04-18 02:54:56,634 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 02:54:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-18 02:54:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-18 02:54:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-18 02:54:56,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-18 02:54:56,667 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-18 02:54:56,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:54:56,668 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-18 02:54:56,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:54:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-18 02:54:56,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:54:56,671 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:54:56,671 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:54:56,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:54:56,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:54:56,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1345064228, now seen corresponding path program 1 times [2020-04-18 02:54:56,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:54:56,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353819311] [2020-04-18 02:54:56,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:54:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:54:56,792 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 02:54:56,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353819311] [2020-04-18 02:54:56,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:54:56,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:54:56,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084919305] [2020-04-18 02:54:56,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:54:56,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:54:56,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:54:56,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:54:56,795 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 4 states. [2020-04-18 02:54:56,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:54:56,819 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2020-04-18 02:54:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:54:56,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-04-18 02:54:56,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:54:56,822 INFO L225 Difference]: With dead ends: 290 [2020-04-18 02:54:56,822 INFO L226 Difference]: Without dead ends: 242 [2020-04-18 02:54:56,823 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 02:54:56,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-04-18 02:54:56,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-04-18 02:54:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-04-18 02:54:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 670 transitions. [2020-04-18 02:54:56,838 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 670 transitions. Word has length 10 [2020-04-18 02:54:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:54:56,839 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 670 transitions. [2020-04-18 02:54:56,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:54:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 670 transitions. [2020-04-18 02:54:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:54:56,840 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:54:56,841 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:54:56,841 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:54:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:54:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1654538757, now seen corresponding path program 1 times [2020-04-18 02:54:56,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:54:56,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398364260] [2020-04-18 02:54:56,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:54:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:54:56,924 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 02:54:56,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398364260] [2020-04-18 02:54:56,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:54:56,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:54:56,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624578493] [2020-04-18 02:54:56,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:54:56,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:54:56,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:54:56,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:54:56,928 INFO L87 Difference]: Start difference. First operand 242 states and 670 transitions. Second operand 5 states. [2020-04-18 02:54:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:54:56,972 INFO L93 Difference]: Finished difference Result 302 states and 815 transitions. [2020-04-18 02:54:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:54:56,973 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-04-18 02:54:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:54:56,974 INFO L225 Difference]: With dead ends: 302 [2020-04-18 02:54:56,974 INFO L226 Difference]: Without dead ends: 140 [2020-04-18 02:54:56,975 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:54:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-04-18 02:54:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-04-18 02:54:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-04-18 02:54:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 354 transitions. [2020-04-18 02:54:56,982 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 354 transitions. Word has length 11 [2020-04-18 02:54:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:54:56,982 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 354 transitions. [2020-04-18 02:54:56,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:54:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 354 transitions. [2020-04-18 02:54:56,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:54:56,984 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:54:56,984 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:54:56,984 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:54:56,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:54:56,984 INFO L82 PathProgramCache]: Analyzing trace with hash -234537171, now seen corresponding path program 1 times [2020-04-18 02:54:56,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:54:56,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092138467] [2020-04-18 02:54:56,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:54:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:54:57,038 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 02:54:57,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092138467] [2020-04-18 02:54:57,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:54:57,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:54:57,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879723256] [2020-04-18 02:54:57,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:54:57,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:54:57,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:54:57,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:54:57,040 INFO L87 Difference]: Start difference. First operand 140 states and 354 transitions. Second operand 5 states. [2020-04-18 02:54:57,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:54:57,079 INFO L93 Difference]: Finished difference Result 176 states and 428 transitions. [2020-04-18 02:54:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:54:57,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:54:57,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:54:57,080 INFO L225 Difference]: With dead ends: 176 [2020-04-18 02:54:57,080 INFO L226 Difference]: Without dead ends: 80 [2020-04-18 02:54:57,080 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:54:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-04-18 02:54:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-04-18 02:54:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-04-18 02:54:57,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-04-18 02:54:57,084 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 12 [2020-04-18 02:54:57,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:54:57,085 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-04-18 02:54:57,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:54:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-04-18 02:54:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:54:57,086 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:54:57,086 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:54:57,086 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:54:57,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:54:57,087 INFO L82 PathProgramCache]: Analyzing trace with hash -627503362, now seen corresponding path program 1 times [2020-04-18 02:54:57,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:54:57,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876850224] [2020-04-18 02:54:57,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:54:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:54:57,176 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 02:54:57,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876850224] [2020-04-18 02:54:57,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:54:57,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:54:57,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618006453] [2020-04-18 02:54:57,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:54:57,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:54:57,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:54:57,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:54:57,180 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 5 states. [2020-04-18 02:54:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:54:57,219 INFO L93 Difference]: Finished difference Result 68 states and 144 transitions. [2020-04-18 02:54:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:54:57,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-18 02:54:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:54:57,220 INFO L225 Difference]: With dead ends: 68 [2020-04-18 02:54:57,220 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:54:57,220 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-18 02:54:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:54:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:54:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:54:57,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:54:57,221 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 02:54:57,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:54:57,221 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:54:57,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:54:57,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:54:57,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:54:57,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:54:57 BasicIcfg [2020-04-18 02:54:57,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:54:57,227 INFO L168 Benchmark]: Toolchain (without parser) took 4066.79 ms. Allocated memory was 146.8 MB in the beginning and 243.3 MB in the end (delta: 96.5 MB). Free memory was 103.3 MB in the beginning and 104.3 MB in the end (delta: -987.7 kB). Peak memory consumption was 95.5 MB. Max. memory is 7.1 GB. [2020-04-18 02:54:57,230 INFO L168 Benchmark]: CDTParser took 1.31 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:54:57,234 INFO L168 Benchmark]: CACSL2BoogieTranslator took 695.97 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 161.5 MB in the end (delta: -60.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:54:57,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.24 ms. Allocated memory is still 204.5 MB. Free memory was 161.5 MB in the beginning and 158.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-04-18 02:54:57,235 INFO L168 Benchmark]: Boogie Preprocessor took 26.82 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:54:57,238 INFO L168 Benchmark]: RCFGBuilder took 462.23 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 135.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:54:57,238 INFO L168 Benchmark]: TraceAbstraction took 2803.03 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 135.2 MB in the beginning and 104.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 69.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:54:57,247 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.31 ms. Allocated memory is still 146.8 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 695.97 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.4 MB in the beginning and 161.5 MB in the end (delta: -60.0 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.24 ms. Allocated memory is still 204.5 MB. Free memory was 161.5 MB in the beginning and 158.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.82 ms. Allocated memory is still 204.5 MB. Free memory was 158.9 MB in the beginning and 157.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.23 ms. Allocated memory is still 204.5 MB. Free memory was 157.6 MB in the beginning and 135.2 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2803.03 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 135.2 MB in the beginning and 104.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 69.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 668 VarBasedMoverChecksPositive, 20 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 134 SDtfs, 142 SDslu, 167 SDs, 0 SdLazy, 40 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 1705 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...