/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 18:55:23,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 18:55:23,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 18:55:23,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 18:55:23,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 18:55:23,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 18:55:23,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 18:55:23,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 18:55:23,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 18:55:23,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 18:55:23,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 18:55:23,848 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 18:55:23,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 18:55:23,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 18:55:23,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 18:55:23,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 18:55:23,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 18:55:23,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 18:55:23,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 18:55:23,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 18:55:23,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 18:55:23,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 18:55:23,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 18:55:23,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 18:55:23,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-18 18:55:23,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-18 18:55:23,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-18 18:55:23,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-18 18:55:23,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-18 18:55:23,865 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-18 18:55:23,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 18:55:23,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 18:55:23,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 18:55:23,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 18:55:23,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 18:55:23,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 18:55:23,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 18:55:23,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 18:55:23,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 18:55:23,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 18:55:23,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 18:55:23,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2019-12-18 18:55:23,885 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 18:55:23,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 18:55:23,886 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 18:55:23,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 18:55:23,887 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 18:55:23,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 18:55:23,887 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 18:55:23,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 18:55:23,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 18:55:23,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 18:55:23,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 18:55:23,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 18:55:23,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 18:55:23,889 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 18:55:23,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 18:55:23,889 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 18:55:23,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 18:55:23,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 18:55:23,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 18:55:23,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 18:55:23,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 18:55:23,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 18:55:23,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 18:55:23,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 18:55:23,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 18:55:23,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 18:55:23,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 18:55:23,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 18:55:23,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 18:55:24,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 18:55:24,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 18:55:24,187 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 18:55:24,188 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 18:55:24,188 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 18:55:24,189 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2019-12-18 18:55:24,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60bf83e9b/046522f414ae4d0fb1feed3e7d2b42f2/FLAG68742d32a [2019-12-18 18:55:24,801 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 18:55:24,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2019-12-18 18:55:24,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60bf83e9b/046522f414ae4d0fb1feed3e7d2b42f2/FLAG68742d32a [2019-12-18 18:55:25,082 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60bf83e9b/046522f414ae4d0fb1feed3e7d2b42f2 [2019-12-18 18:55:25,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 18:55:25,098 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 18:55:25,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 18:55:25,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 18:55:25,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 18:55:25,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a85e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25, skipping insertion in model container [2019-12-18 18:55:25,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 18:55:25,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 18:55:25,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 18:55:25,670 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 18:55:25,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 18:55:25,802 INFO L208 MainTranslator]: Completed translation [2019-12-18 18:55:25,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25 WrapperNode [2019-12-18 18:55:25,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 18:55:25,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 18:55:25,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 18:55:25,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 18:55:25,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 18:55:25,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 18:55:25,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 18:55:25,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 18:55:25,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... [2019-12-18 18:55:25,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 18:55:25,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 18:55:25,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 18:55:25,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 18:55:25,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 18:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 18:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 18:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 18:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 18:55:25,939 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 18:55:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 18:55:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 18:55:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 18:55:25,940 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 18:55:25,940 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 18:55:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 18:55:25,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 18:55:25,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 18:55:25,942 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-18 18:55:26,303 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 18:55:26,304 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 18:55:26,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:55:26 BoogieIcfgContainer [2019-12-18 18:55:26,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 18:55:26,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 18:55:26,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 18:55:26,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 18:55:26,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 06:55:25" (1/3) ... [2019-12-18 18:55:26,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6246b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:55:26, skipping insertion in model container [2019-12-18 18:55:26,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:55:25" (2/3) ... [2019-12-18 18:55:26,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6246b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:55:26, skipping insertion in model container [2019-12-18 18:55:26,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:55:26" (3/3) ... [2019-12-18 18:55:26,313 INFO L109 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2019-12-18 18:55:26,323 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 18:55:26,324 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 18:55:26,331 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 18:55:26,332 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 18:55:26,359 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,360 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,360 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,361 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,361 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,361 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,362 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,362 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,362 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,362 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,363 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,363 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,364 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,364 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,364 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,364 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,365 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,369 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,369 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,370 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,370 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,373 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,374 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,374 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,374 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,377 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,378 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,378 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,378 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 18:55:26,394 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 18:55:26,415 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 18:55:26,415 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 18:55:26,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 18:55:26,415 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 18:55:26,416 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 18:55:26,416 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 18:55:26,416 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 18:55:26,416 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 18:55:26,430 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 54 transitions [2019-12-18 18:55:26,432 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 18:55:26,482 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 18:55:26,485 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 18:55:26,494 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 18:55:26,499 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 63 places, 54 transitions [2019-12-18 18:55:26,525 INFO L126 PetriNetUnfolder]: 1/51 cut-off events. [2019-12-18 18:55:26,526 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 18:55:26,527 INFO L76 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 1/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 9/58 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 18:55:26,528 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 18:55:26,530 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-18 18:55:27,874 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-12-18 18:55:28,040 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2019-12-18 18:55:28,116 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-18 18:55:28,117 INFO L214 etLargeBlockEncoding]: Total number of compositions: 44 [2019-12-18 18:55:28,121 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 18:55:28,144 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 18:55:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 18:55:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 18:55:28,158 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 18:55:28,160 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 18:55:28,160 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 18:55:28,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 18:55:28,169 INFO L82 PathProgramCache]: Analyzing trace with hash -53140901, now seen corresponding path program 1 times [2019-12-18 18:55:28,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 18:55:28,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995536855] [2019-12-18 18:55:28,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 18:55:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 18:55:28,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 18:55:28,493 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995536855] [2019-12-18 18:55:28,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 18:55:28,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 18:55:28,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933031848] [2019-12-18 18:55:28,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 18:55:28,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 18:55:28,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 18:55:28,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 18:55:28,523 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 18:55:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 18:55:28,572 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-18 18:55:28,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 18:55:28,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 18:55:28,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 18:55:28,604 INFO L225 Difference]: With dead ends: 42 [2019-12-18 18:55:28,605 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 18:55:28,606 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 18:55:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 18:55:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 18:55:28,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 18:55:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 18:55:28,654 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 18:55:28,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 18:55:28,655 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 18:55:28,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 18:55:28,656 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 18:55:28,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 18:55:28,659 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 18:55:28,659 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 18:55:28,660 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 18:55:28,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 18:55:28,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1649012318, now seen corresponding path program 1 times [2019-12-18 18:55:28,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 18:55:28,661 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110942650] [2019-12-18 18:55:28,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 18:55:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 18:55:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 18:55:28,738 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110942650] [2019-12-18 18:55:28,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 18:55:28,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 18:55:28,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155605343] [2019-12-18 18:55:28,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 18:55:28,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 18:55:28,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 18:55:28,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 18:55:28,741 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 3 states. [2019-12-18 18:55:28,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 18:55:28,747 INFO L93 Difference]: Finished difference Result 32 states and 59 transitions. [2019-12-18 18:55:28,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 18:55:28,747 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-18 18:55:28,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 18:55:28,748 INFO L225 Difference]: With dead ends: 32 [2019-12-18 18:55:28,749 INFO L226 Difference]: Without dead ends: 32 [2019-12-18 18:55:28,750 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 18:55:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-18 18:55:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-12-18 18:55:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-18 18:55:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 59 transitions. [2019-12-18 18:55:28,755 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 59 transitions. Word has length 9 [2019-12-18 18:55:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 18:55:28,755 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 59 transitions. [2019-12-18 18:55:28,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 18:55:28,756 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 59 transitions. [2019-12-18 18:55:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 18:55:28,756 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 18:55:28,757 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 18:55:28,757 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 18:55:28,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 18:55:28,757 INFO L82 PathProgramCache]: Analyzing trace with hash 420225671, now seen corresponding path program 1 times [2019-12-18 18:55:28,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 18:55:28,758 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635899521] [2019-12-18 18:55:28,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 18:55:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 18:55:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 18:55:28,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635899521] [2019-12-18 18:55:28,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 18:55:28,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 18:55:28,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165891990] [2019-12-18 18:55:28,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 18:55:28,932 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 18:55:28,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 18:55:28,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-18 18:55:28,933 INFO L87 Difference]: Start difference. First operand 32 states and 59 transitions. Second operand 6 states. [2019-12-18 18:55:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 18:55:29,027 INFO L93 Difference]: Finished difference Result 32 states and 57 transitions. [2019-12-18 18:55:29,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 18:55:29,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 18:55:29,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 18:55:29,029 INFO L225 Difference]: With dead ends: 32 [2019-12-18 18:55:29,029 INFO L226 Difference]: Without dead ends: 24 [2019-12-18 18:55:29,030 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-18 18:55:29,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-18 18:55:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-18 18:55:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-18 18:55:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-18 18:55:29,034 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-18 18:55:29,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 18:55:29,034 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-18 18:55:29,034 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 18:55:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-18 18:55:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 18:55:29,035 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 18:55:29,035 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 18:55:29,036 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 18:55:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 18:55:29,036 INFO L82 PathProgramCache]: Analyzing trace with hash 868107411, now seen corresponding path program 1 times [2019-12-18 18:55:29,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 18:55:29,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156323506] [2019-12-18 18:55:29,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 18:55:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 18:55:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 18:55:29,106 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156323506] [2019-12-18 18:55:29,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 18:55:29,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 18:55:29,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419214013] [2019-12-18 18:55:29,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 18:55:29,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 18:55:29,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 18:55:29,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 18:55:29,109 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 4 states. [2019-12-18 18:55:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 18:55:29,132 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-18 18:55:29,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 18:55:29,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 18:55:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 18:55:29,133 INFO L225 Difference]: With dead ends: 27 [2019-12-18 18:55:29,134 INFO L226 Difference]: Without dead ends: 16 [2019-12-18 18:55:29,134 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 18:55:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-18 18:55:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-18 18:55:29,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-18 18:55:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-18 18:55:29,138 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-18 18:55:29,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 18:55:29,139 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-18 18:55:29,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 18:55:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-18 18:55:29,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 18:55:29,139 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 18:55:29,139 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 18:55:29,140 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 18:55:29,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 18:55:29,140 INFO L82 PathProgramCache]: Analyzing trace with hash 144947967, now seen corresponding path program 2 times [2019-12-18 18:55:29,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 18:55:29,140 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29203940] [2019-12-18 18:55:29,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 18:55:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 18:55:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 18:55:29,221 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29203940] [2019-12-18 18:55:29,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 18:55:29,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 18:55:29,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285712217] [2019-12-18 18:55:29,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 18:55:29,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 18:55:29,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 18:55:29,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 18:55:29,226 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-18 18:55:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 18:55:29,261 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-12-18 18:55:29,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 18:55:29,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 18:55:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 18:55:29,264 INFO L225 Difference]: With dead ends: 18 [2019-12-18 18:55:29,264 INFO L226 Difference]: Without dead ends: 12 [2019-12-18 18:55:29,264 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-18 18:55:29,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-18 18:55:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-18 18:55:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-18 18:55:29,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-18 18:55:29,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-18 18:55:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 18:55:29,272 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-18 18:55:29,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 18:55:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-18 18:55:29,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 18:55:29,273 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 18:55:29,273 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 18:55:29,274 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 18:55:29,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 18:55:29,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1810889517, now seen corresponding path program 3 times [2019-12-18 18:55:29,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 18:55:29,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585346550] [2019-12-18 18:55:29,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 18:55:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 18:55:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-18 18:55:29,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585346550] [2019-12-18 18:55:29,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 18:55:29,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 18:55:29,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690592335] [2019-12-18 18:55:29,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 18:55:29,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 18:55:29,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 18:55:29,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 18:55:29,338 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2019-12-18 18:55:29,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 18:55:29,351 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-18 18:55:29,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 18:55:29,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 18:55:29,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 18:55:29,352 INFO L225 Difference]: With dead ends: 11 [2019-12-18 18:55:29,352 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 18:55:29,352 INFO L631 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 [2019-12-18 18:55:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 18:55:29,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 18:55:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 18:55:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 18:55:29,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 18:55:29,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 18:55:29,353 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 18:55:29,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 18:55:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 18:55:29,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 18:55:29,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 06:55:29 BasicIcfg [2019-12-18 18:55:29,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 18:55:29,360 INFO L168 Benchmark]: Toolchain (without parser) took 4261.73 ms. Allocated memory was 145.2 MB in the beginning and 247.5 MB in the end (delta: 102.2 MB). Free memory was 100.4 MB in the beginning and 126.1 MB in the end (delta: -25.7 MB). Peak memory consumption was 76.5 MB. Max. memory is 7.1 GB. [2019-12-18 18:55:29,361 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-12-18 18:55:29,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 703.23 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 160.8 MB in the end (delta: -60.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2019-12-18 18:55:29,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.16 ms. Allocated memory is still 202.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-18 18:55:29,363 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 18:55:29,364 INFO L168 Benchmark]: RCFGBuilder took 424.77 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 136.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-12-18 18:55:29,365 INFO L168 Benchmark]: TraceAbstraction took 3051.58 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 136.0 MB in the beginning and 126.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2019-12-18 18:55:29,370 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 145.2 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 703.23 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 100.2 MB in the beginning and 160.8 MB in the end (delta: -60.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.16 ms. Allocated memory is still 202.9 MB. Free memory was 160.8 MB in the beginning and 158.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 202.9 MB. Free memory was 158.8 MB in the beginning and 157.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 424.77 ms. Allocated memory is still 202.9 MB. Free memory was 157.5 MB in the beginning and 136.7 MB in the end (delta: 20.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3051.58 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 136.0 MB in the beginning and 126.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.6s, 63 ProgramPointsBefore, 21 ProgramPointsAfterwards, 54 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 230 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 1 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 44 TotalNumberOfCompositions - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 38 SDslu, 49 SDs, 0 SdLazy, 48 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1459 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...