/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-4336eb1 [2019-12-27 00:19:14,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-27 00:19:14,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-27 00:19:14,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-27 00:19:14,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-27 00:19:14,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-27 00:19:14,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-27 00:19:14,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-27 00:19:14,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-27 00:19:14,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-27 00:19:14,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-27 00:19:14,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-27 00:19:14,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-27 00:19:14,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-27 00:19:14,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-27 00:19:14,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-27 00:19:14,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-27 00:19:14,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-27 00:19:14,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-27 00:19:14,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-27 00:19:14,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-27 00:19:14,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-27 00:19:14,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-27 00:19:14,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-27 00:19:14,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-27 00:19:15,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-27 00:19:15,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-27 00:19:15,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-27 00:19:15,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-27 00:19:15,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-27 00:19:15,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-27 00:19:15,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-27 00:19:15,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-27 00:19:15,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-27 00:19:15,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-27 00:19:15,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-27 00:19:15,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-27 00:19:15,036 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-27 00:19:15,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-27 00:19:15,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-27 00:19:15,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-27 00:19:15,038 INFO L138 SettingsManager]: * Use SBE=true [2019-12-27 00:19:15,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-27 00:19:15,038 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-27 00:19:15,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-27 00:19:15,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-27 00:19:15,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-27 00:19:15,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-27 00:19:15,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-27 00:19:15,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-27 00:19:15,040 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-27 00:19:15,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-27 00:19:15,040 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-27 00:19:15,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-27 00:19:15,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-27 00:19:15,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-27 00:19:15,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-27 00:19:15,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-27 00:19:15,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-27 00:19:15,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-27 00:19:15,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-27 00:19:15,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-27 00:19:15,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-27 00:19:15,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-27 00:19:15,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-27 00:19:15,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-27 00:19:15,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-27 00:19:15,318 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-27 00:19:15,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-27 00:19:15,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-27 00:19:15,339 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-27 00:19:15,340 INFO L275 PluginConnector]: CDTParser initialized [2019-12-27 00:19:15,341 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2019-12-27 00:19:15,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68c5b0bf5/d0e0df994bd74ffca748518d74967df6/FLAG5a704518e [2019-12-27 00:19:15,990 INFO L306 CDTParser]: Found 1 translation units. [2019-12-27 00:19:15,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_rmo.oepc.i [2019-12-27 00:19:16,007 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68c5b0bf5/d0e0df994bd74ffca748518d74967df6/FLAG5a704518e [2019-12-27 00:19:16,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68c5b0bf5/d0e0df994bd74ffca748518d74967df6 [2019-12-27 00:19:16,332 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-27 00:19:16,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-27 00:19:16,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-27 00:19:16,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-27 00:19:16,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-27 00:19:16,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:19:16" (1/1) ... [2019-12-27 00:19:16,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478c5e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:16, skipping insertion in model container [2019-12-27 00:19:16,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 12:19:16" (1/1) ... [2019-12-27 00:19:16,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-27 00:19:16,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-27 00:19:16,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:19:16,966 INFO L203 MainTranslator]: Completed pre-run [2019-12-27 00:19:17,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-27 00:19:17,098 INFO L208 MainTranslator]: Completed translation [2019-12-27 00:19:17,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17 WrapperNode [2019-12-27 00:19:17,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-27 00:19:17,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-27 00:19:17,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-27 00:19:17,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-27 00:19:17,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-27 00:19:17,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-27 00:19:17,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-27 00:19:17,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-27 00:19:17,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (1/1) ... [2019-12-27 00:19:17,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-27 00:19:17,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-27 00:19:17,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-27 00:19:17,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-27 00:19:17,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (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 [2019-12-27 00:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-27 00:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-27 00:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-27 00:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-27 00:19:17,241 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-27 00:19:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-27 00:19:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-27 00:19:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-27 00:19:17,242 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-27 00:19:17,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-27 00:19:17,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-27 00:19:17,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-27 00:19:17,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-27 00:19:17,244 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-27 00:19:17,635 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-27 00:19:17,635 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-27 00:19:17,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:19:17 BoogieIcfgContainer [2019-12-27 00:19:17,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-27 00:19:17,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-27 00:19:17,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-27 00:19:17,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-27 00:19:17,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 12:19:16" (1/3) ... [2019-12-27 00:19:17,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6d5b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:19:17, skipping insertion in model container [2019-12-27 00:19:17,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 12:19:17" (2/3) ... [2019-12-27 00:19:17,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6d5b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 12:19:17, skipping insertion in model container [2019-12-27 00:19:17,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 12:19:17" (3/3) ... [2019-12-27 00:19:17,645 INFO L109 eAbstractionObserver]: Analyzing ICFG safe037_rmo.oepc.i [2019-12-27 00:19:17,653 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-27 00:19:17,654 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-27 00:19:17,660 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-27 00:19:17,661 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-27 00:19:17,696 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,698 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,699 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,699 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,700 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,700 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,700 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,701 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,701 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,701 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,702 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,702 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,703 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,703 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,703 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,704 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,704 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,704 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,710 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,711 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,711 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,711 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,719 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,720 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,720 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,720 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,723 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,723 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,724 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,724 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-27 00:19:17,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-27 00:19:17,761 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-27 00:19:17,761 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-27 00:19:17,761 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-27 00:19:17,762 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-27 00:19:17,762 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-27 00:19:17,762 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-27 00:19:17,762 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-27 00:19:17,762 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-27 00:19:17,777 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-27 00:19:17,779 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 00:19:17,824 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 00:19:17,824 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 00:19:17,830 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 00:19:17,833 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-27 00:19:17,852 INFO L132 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-27 00:19:17,853 INFO L133 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-27 00:19:17,854 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs. 0/50 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-27 00:19:17,857 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-27 00:19:17,859 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-27 00:19:19,278 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-12-27 00:19:19,343 INFO L206 etLargeBlockEncoding]: Checked pairs total: 425 [2019-12-27 00:19:19,343 INFO L214 etLargeBlockEncoding]: Total number of compositions: 45 [2019-12-27 00:19:19,347 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 17 transitions [2019-12-27 00:19:19,355 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 54 states. [2019-12-27 00:19:19,357 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-12-27 00:19:19,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-27 00:19:19,364 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:19:19,365 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:19:19,365 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:19:19,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:19:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1086085239, now seen corresponding path program 1 times [2019-12-27 00:19:19,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:19:19,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235112055] [2019-12-27 00:19:19,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:19:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:19:19,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:19:19,695 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235112055] [2019-12-27 00:19:19,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:19:19,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-27 00:19:19,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878046616] [2019-12-27 00:19:19,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:19:19,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:19:19,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:19:19,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:19:19,723 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2019-12-27 00:19:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:19:19,791 INFO L93 Difference]: Finished difference Result 58 states and 113 transitions. [2019-12-27 00:19:19,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:19:19,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-27 00:19:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:19:19,818 INFO L225 Difference]: With dead ends: 58 [2019-12-27 00:19:19,818 INFO L226 Difference]: Without dead ends: 36 [2019-12-27 00:19:19,820 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 [2019-12-27 00:19:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-27 00:19:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-27 00:19:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-27 00:19:19,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-27 00:19:19,863 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-27 00:19:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:19:19,863 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-27 00:19:19,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:19:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-27 00:19:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-27 00:19:19,864 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:19:19,864 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:19:19,865 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:19:19,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:19:19,865 INFO L82 PathProgramCache]: Analyzing trace with hash -744608244, now seen corresponding path program 1 times [2019-12-27 00:19:19,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:19:19,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003860193] [2019-12-27 00:19:19,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:19:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:19:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:19:20,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003860193] [2019-12-27 00:19:20,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:19:20,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:19:20,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397901509] [2019-12-27 00:19:20,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-27 00:19:20,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:19:20,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-27 00:19:20,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-27 00:19:20,005 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-27 00:19:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:19:20,066 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-27 00:19:20,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-27 00:19:20,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-27 00:19:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:19:20,067 INFO L225 Difference]: With dead ends: 37 [2019-12-27 00:19:20,068 INFO L226 Difference]: Without dead ends: 30 [2019-12-27 00:19:20,069 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-27 00:19:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-27 00:19:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-27 00:19:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-27 00:19:20,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-27 00:19:20,074 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-27 00:19:20,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:19:20,074 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-27 00:19:20,074 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-27 00:19:20,075 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-27 00:19:20,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 00:19:20,075 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:19:20,075 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:19:20,076 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:19:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:19:20,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1607968112, now seen corresponding path program 1 times [2019-12-27 00:19:20,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:19:20,077 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080943160] [2019-12-27 00:19:20,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:19:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:19:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:19:20,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080943160] [2019-12-27 00:19:20,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:19:20,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:19:20,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950144069] [2019-12-27 00:19:20,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:19:20,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:19:20,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:19:20,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:19:20,135 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 4 states. [2019-12-27 00:19:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:19:20,152 INFO L93 Difference]: Finished difference Result 35 states and 54 transitions. [2019-12-27 00:19:20,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:19:20,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-27 00:19:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:19:20,154 INFO L225 Difference]: With dead ends: 35 [2019-12-27 00:19:20,154 INFO L226 Difference]: Without dead ends: 31 [2019-12-27 00:19:20,154 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 [2019-12-27 00:19:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-27 00:19:20,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-12-27 00:19:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-27 00:19:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 47 transitions. [2019-12-27 00:19:20,159 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 47 transitions. Word has length 10 [2019-12-27 00:19:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:19:20,159 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 47 transitions. [2019-12-27 00:19:20,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:19:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 47 transitions. [2019-12-27 00:19:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-27 00:19:20,160 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:19:20,161 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:19:20,161 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:19:20,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:19:20,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1607961385, now seen corresponding path program 1 times [2019-12-27 00:19:20,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:19:20,162 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114298555] [2019-12-27 00:19:20,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:19:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:19:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:19:20,255 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114298555] [2019-12-27 00:19:20,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:19:20,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-27 00:19:20,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378489956] [2019-12-27 00:19:20,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-27 00:19:20,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:19:20,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-27 00:19:20,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-27 00:19:20,258 INFO L87 Difference]: Start difference. First operand 30 states and 47 transitions. Second operand 6 states. [2019-12-27 00:19:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:19:20,357 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2019-12-27 00:19:20,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-27 00:19:20,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-27 00:19:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:19:20,358 INFO L225 Difference]: With dead ends: 28 [2019-12-27 00:19:20,358 INFO L226 Difference]: Without dead ends: 16 [2019-12-27 00:19:20,359 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-27 00:19:20,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-27 00:19:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-27 00:19:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-27 00:19:20,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-27 00:19:20,364 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 10 [2019-12-27 00:19:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:19:20,364 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-27 00:19:20,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-27 00:19:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-27 00:19:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:19:20,366 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:19:20,367 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:19:20,367 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:19:20,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:19:20,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1627425577, now seen corresponding path program 1 times [2019-12-27 00:19:20,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:19:20,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944497232] [2019-12-27 00:19:20,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:19:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:19:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:19:20,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944497232] [2019-12-27 00:19:20,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:19:20,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:19:20,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46208535] [2019-12-27 00:19:20,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:19:20,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:19:20,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:19:20,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:19:20,450 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2019-12-27 00:19:20,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:19:20,468 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-27 00:19:20,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:19:20,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 00:19:20,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:19:20,469 INFO L225 Difference]: With dead ends: 19 [2019-12-27 00:19:20,469 INFO L226 Difference]: Without dead ends: 14 [2019-12-27 00:19:20,469 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 [2019-12-27 00:19:20,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-27 00:19:20,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-27 00:19:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-27 00:19:20,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-27 00:19:20,474 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-27 00:19:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:19:20,475 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-27 00:19:20,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:19:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-27 00:19:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-27 00:19:20,475 INFO L403 BasicCegarLoop]: Found error trace [2019-12-27 00:19:20,475 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-27 00:19:20,480 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-27 00:19:20,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-27 00:19:20,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1633797007, now seen corresponding path program 2 times [2019-12-27 00:19:20,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-27 00:19:20,481 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617028567] [2019-12-27 00:19:20,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-27 00:19:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-27 00:19:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-27 00:19:20,534 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617028567] [2019-12-27 00:19:20,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-27 00:19:20,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-27 00:19:20,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546501379] [2019-12-27 00:19:20,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-27 00:19:20,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-27 00:19:20,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-27 00:19:20,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-27 00:19:20,539 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 4 states. [2019-12-27 00:19:20,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-27 00:19:20,555 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-27 00:19:20,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-27 00:19:20,555 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-27 00:19:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-27 00:19:20,556 INFO L225 Difference]: With dead ends: 13 [2019-12-27 00:19:20,556 INFO L226 Difference]: Without dead ends: 0 [2019-12-27 00:19:20,556 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 [2019-12-27 00:19:20,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-27 00:19:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-27 00:19:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-27 00:19:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-27 00:19:20,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-27 00:19:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-27 00:19:20,557 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-27 00:19:20,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-27 00:19:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-27 00:19:20,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-27 00:19:20,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 12:19:20 BasicIcfg [2019-12-27 00:19:20,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-27 00:19:20,565 INFO L168 Benchmark]: Toolchain (without parser) took 4231.54 ms. Allocated memory was 139.5 MB in the beginning and 244.3 MB in the end (delta: 104.9 MB). Free memory was 102.7 MB in the beginning and 105.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 102.5 MB. Max. memory is 7.1 GB. [2019-12-27 00:19:20,566 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-12-27 00:19:20,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 764.21 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.3 MB in the beginning and 161.0 MB in the end (delta: -58.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-12-27 00:19:20,568 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.78 ms. Allocated memory is still 203.9 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-12-27 00:19:20,569 INFO L168 Benchmark]: Boogie Preprocessor took 31.29 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 157.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-27 00:19:20,570 INFO L168 Benchmark]: RCFGBuilder took 457.39 ms. Allocated memory is still 203.9 MB. Free memory was 157.1 MB in the beginning and 136.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2019-12-27 00:19:20,571 INFO L168 Benchmark]: TraceAbstraction took 2925.65 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 136.6 MB in the beginning and 105.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. [2019-12-27 00:19:20,575 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 139.5 MB. Free memory was 122.7 MB in the beginning and 122.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 764.21 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.3 MB in the beginning and 161.0 MB in the end (delta: -58.8 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.78 ms. Allocated memory is still 203.9 MB. Free memory was 161.0 MB in the beginning and 159.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.29 ms. Allocated memory is still 203.9 MB. Free memory was 159.0 MB in the beginning and 157.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.39 ms. Allocated memory is still 203.9 MB. Free memory was 157.1 MB in the beginning and 136.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2925.65 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 136.6 MB in the beginning and 105.0 MB in the end (delta: 31.6 MB). Peak memory consumption was 71.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 64 ProgramPointsBefore, 22 ProgramPointsAfterwards, 55 TransitionsBefore, 17 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 236 VarBasedMoverChecksPositive, 9 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 10 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 425 CheckedPairsTotal, 45 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 68 SDslu, 79 SDs, 0 SdLazy, 57 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 1341 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...