/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-fae578e [2019-12-18 22:58:14,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-18 22:58:14,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-18 22:58:14,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-18 22:58:14,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-18 22:58:14,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-18 22:58:14,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-18 22:58:14,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-18 22:58:14,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-18 22:58:14,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-18 22:58:14,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-18 22:58:14,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-18 22:58:14,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-18 22:58:14,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-18 22:58:14,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-18 22:58:14,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-18 22:58:14,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-18 22:58:14,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-18 22:58:14,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-18 22:58:14,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-18 22:58:14,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-18 22:58:14,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-18 22:58:14,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-18 22:58:14,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-18 22:58:14,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-12-18 22:58:14,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-18 22:58:14,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-18 22:58:14,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-18 22:58:14,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-18 22:58:14,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-18 22:58:14,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-18 22:58:14,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-18 22:58:14,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-18 22:58:14,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-18 22:58:14,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-18 22:58:14,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-18 22:58:14,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-VariableLbe.epf [2019-12-18 22:58:14,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-18 22:58:14,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-18 22:58:14,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-18 22:58:14,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-18 22:58:14,640 INFO L138 SettingsManager]: * Use SBE=true [2019-12-18 22:58:14,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-18 22:58:14,640 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-18 22:58:14,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-18 22:58:14,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-18 22:58:14,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-18 22:58:14,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-18 22:58:14,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-18 22:58:14,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-18 22:58:14,642 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-18 22:58:14,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-18 22:58:14,643 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-18 22:58:14,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-18 22:58:14,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-18 22:58:14,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-18 22:58:14,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-18 22:58:14,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-18 22:58:14,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-18 22:58:14,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-18 22:58:14,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-18 22:58:14,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-18 22:58:14,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-18 22:58:14,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-18 22:58:14,646 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2019-12-18 22:58:14,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-18 22:58:14,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-18 22:58:14,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-18 22:58:14,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-18 22:58:14,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-18 22:58:14,946 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-18 22:58:14,946 INFO L275 PluginConnector]: CDTParser initialized [2019-12-18 22:58:14,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2019-12-18 22:58:15,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f08f8771/5bfd24d9fd484a5cb4d14de2bc1d544c/FLAG5caea6cd1 [2019-12-18 22:58:15,608 INFO L306 CDTParser]: Found 1 translation units. [2019-12-18 22:58:15,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2019-12-18 22:58:15,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f08f8771/5bfd24d9fd484a5cb4d14de2bc1d544c/FLAG5caea6cd1 [2019-12-18 22:58:15,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f08f8771/5bfd24d9fd484a5cb4d14de2bc1d544c [2019-12-18 22:58:15,957 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-18 22:58:15,959 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-18 22:58:15,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-18 22:58:15,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-18 22:58:15,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-18 22:58:15,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:58:15" (1/1) ... [2019-12-18 22:58:15,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dce9158 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:15, skipping insertion in model container [2019-12-18 22:58:15,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:58:15" (1/1) ... [2019-12-18 22:58:15,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-18 22:58:16,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-18 22:58:16,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:58:16,518 INFO L203 MainTranslator]: Completed pre-run [2019-12-18 22:58:16,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-18 22:58:16,648 INFO L208 MainTranslator]: Completed translation [2019-12-18 22:58:16,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16 WrapperNode [2019-12-18 22:58:16,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-18 22:58:16,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-18 22:58:16,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-18 22:58:16,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-18 22:58:16,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-18 22:58:16,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-18 22:58:16,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-18 22:58:16,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-18 22:58:16,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (1/1) ... [2019-12-18 22:58:16,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-18 22:58:16,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-18 22:58:16,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-18 22:58:16,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-18 22:58:16,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (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 22:58:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-18 22:58:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-18 22:58:16,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-18 22:58:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-18 22:58:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-18 22:58:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-18 22:58:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-18 22:58:16,795 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-18 22:58:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-18 22:58:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-18 22:58:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-18 22:58:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-18 22:58:16,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-18 22:58:16,798 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 22:58:17,186 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-18 22:58:17,186 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-18 22:58:17,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:58:17 BoogieIcfgContainer [2019-12-18 22:58:17,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-18 22:58:17,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-18 22:58:17,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-18 22:58:17,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-18 22:58:17,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:58:15" (1/3) ... [2019-12-18 22:58:17,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d414f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:58:17, skipping insertion in model container [2019-12-18 22:58:17,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:58:16" (2/3) ... [2019-12-18 22:58:17,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d414f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:58:17, skipping insertion in model container [2019-12-18 22:58:17,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:58:17" (3/3) ... [2019-12-18 22:58:17,195 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2019-12-18 22:58:17,203 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-18 22:58:17,204 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-18 22:58:17,211 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-18 22:58:17,212 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-18 22:58:17,246 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,246 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,247 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,247 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,247 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,250 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,251 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,251 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,252 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,252 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,252 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,252 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,253 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,253 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,254 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,254 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,254 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,254 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,260 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,261 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,261 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,261 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,272 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,273 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,273 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,274 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,277 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,278 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,278 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,278 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-18 22:58:17,296 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-18 22:58:17,321 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-18 22:58:17,321 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-18 22:58:17,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-18 22:58:17,322 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-18 22:58:17,322 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-18 22:58:17,323 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-18 22:58:17,323 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-18 22:58:17,323 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-18 22:58:17,342 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-18 22:58:17,345 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 22:58:17,420 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 22:58:17,421 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:58:17,432 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:58:17,435 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-18 22:58:17,477 INFO L126 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-18 22:58:17,477 INFO L127 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-18 22:58:17,479 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-18 22:58:17,482 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-18 22:58:17,483 INFO L182 etLargeBlockEncoding]: Variable Check. [2019-12-18 22:58:18,797 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-12-18 22:58:18,852 INFO L206 etLargeBlockEncoding]: Checked pairs total: 489 [2019-12-18 22:58:18,852 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2019-12-18 22:58:18,856 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-18 22:58:18,867 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-18 22:58:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-18 22:58:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-18 22:58:18,877 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:58:18,878 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:58:18,878 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:58:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:58:18,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1221233282, now seen corresponding path program 1 times [2019-12-18 22:58:18,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:58:18,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424184849] [2019-12-18 22:58:18,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:58:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:58:19,137 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 22:58:19,137 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424184849] [2019-12-18 22:58:19,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:58:19,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-18 22:58:19,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377392773] [2019-12-18 22:58:19,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-18 22:58:19,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:58:19,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-18 22:58:19,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-18 22:58:19,166 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2019-12-18 22:58:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:58:19,205 INFO L93 Difference]: Finished difference Result 42 states and 84 transitions. [2019-12-18 22:58:19,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-18 22:58:19,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-18 22:58:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:58:19,221 INFO L225 Difference]: With dead ends: 42 [2019-12-18 22:58:19,221 INFO L226 Difference]: Without dead ends: 34 [2019-12-18 22:58:19,223 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 22:58:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-18 22:58:19,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-18 22:58:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-18 22:58:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 64 transitions. [2019-12-18 22:58:19,257 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 64 transitions. Word has length 8 [2019-12-18 22:58:19,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:58:19,258 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 64 transitions. [2019-12-18 22:58:19,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-18 22:58:19,259 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 64 transitions. [2019-12-18 22:58:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-18 22:58:19,259 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:58:19,260 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:58:19,260 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:58:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:58:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash 796473804, now seen corresponding path program 1 times [2019-12-18 22:58:19,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:58:19,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426782401] [2019-12-18 22:58:19,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:58:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:58:19,367 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 22:58:19,367 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426782401] [2019-12-18 22:58:19,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:58:19,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-18 22:58:19,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377104489] [2019-12-18 22:58:19,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:58:19,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:58:19,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:58:19,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:58:19,371 INFO L87 Difference]: Start difference. First operand 34 states and 64 transitions. Second operand 4 states. [2019-12-18 22:58:19,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:58:19,397 INFO L93 Difference]: Finished difference Result 39 states and 68 transitions. [2019-12-18 22:58:19,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:58:19,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-18 22:58:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:58:19,398 INFO L225 Difference]: With dead ends: 39 [2019-12-18 22:58:19,398 INFO L226 Difference]: Without dead ends: 31 [2019-12-18 22:58:19,399 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 22:58:19,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-18 22:58:19,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-12-18 22:58:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-18 22:58:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2019-12-18 22:58:19,405 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 9 [2019-12-18 22:58:19,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:58:19,405 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2019-12-18 22:58:19,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:58:19,406 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2019-12-18 22:58:19,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:58:19,406 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:58:19,407 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:58:19,407 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:58:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:58:19,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1474951325, now seen corresponding path program 1 times [2019-12-18 22:58:19,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:58:19,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312782664] [2019-12-18 22:58:19,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:58:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:58:19,481 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 22:58:19,481 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312782664] [2019-12-18 22:58:19,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:58:19,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:58:19,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798285513] [2019-12-18 22:58:19,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:58:19,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:58:19,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:58:19,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:58:19,483 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 4 states. [2019-12-18 22:58:19,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:58:19,509 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2019-12-18 22:58:19,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 22:58:19,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-18 22:58:19,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:58:19,511 INFO L225 Difference]: With dead ends: 41 [2019-12-18 22:58:19,511 INFO L226 Difference]: Without dead ends: 29 [2019-12-18 22:58:19,511 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 22:58:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-18 22:58:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-12-18 22:58:19,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-18 22:58:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 41 transitions. [2019-12-18 22:58:19,516 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 41 transitions. Word has length 10 [2019-12-18 22:58:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:58:19,516 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 41 transitions. [2019-12-18 22:58:19,516 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:58:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 41 transitions. [2019-12-18 22:58:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:58:19,517 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:58:19,517 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:58:19,518 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:58:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:58:19,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1079116931, now seen corresponding path program 1 times [2019-12-18 22:58:19,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:58:19,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940951034] [2019-12-18 22:58:19,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:58:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:58:19,641 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 22:58:19,642 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940951034] [2019-12-18 22:58:19,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:58:19,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:58:19,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024524658] [2019-12-18 22:58:19,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-18 22:58:19,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:58:19,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-18 22:58:19,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-18 22:58:19,644 INFO L87 Difference]: Start difference. First operand 28 states and 41 transitions. Second operand 5 states. [2019-12-18 22:58:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:58:19,692 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2019-12-18 22:58:19,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-18 22:58:19,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-18 22:58:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:58:19,694 INFO L225 Difference]: With dead ends: 31 [2019-12-18 22:58:19,694 INFO L226 Difference]: Without dead ends: 25 [2019-12-18 22:58:19,694 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-18 22:58:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-18 22:58:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-18 22:58:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-18 22:58:19,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-12-18 22:58:19,698 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 10 [2019-12-18 22:58:19,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:58:19,698 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-12-18 22:58:19,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-18 22:58:19,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-12-18 22:58:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-18 22:58:19,699 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:58:19,699 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:58:19,700 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:58:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:58:19,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1076556641, now seen corresponding path program 2 times [2019-12-18 22:58:19,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:58:19,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187505357] [2019-12-18 22:58:19,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:58:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:58:19,781 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 22:58:19,782 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187505357] [2019-12-18 22:58:19,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:58:19,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-18 22:58:19,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898307099] [2019-12-18 22:58:19,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-18 22:58:19,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:58:19,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-18 22:58:19,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-18 22:58:19,784 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand 6 states. [2019-12-18 22:58:19,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:58:19,857 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2019-12-18 22:58:19,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-18 22:58:19,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-18 22:58:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:58:19,858 INFO L225 Difference]: With dead ends: 25 [2019-12-18 22:58:19,859 INFO L226 Difference]: Without dead ends: 18 [2019-12-18 22:58:19,859 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 [2019-12-18 22:58:19,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-18 22:58:19,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-18 22:58:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-18 22:58:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2019-12-18 22:58:19,862 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 10 [2019-12-18 22:58:19,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:58:19,862 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2019-12-18 22:58:19,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-18 22:58:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2019-12-18 22:58:19,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-18 22:58:19,863 INFO L403 BasicCegarLoop]: Found error trace [2019-12-18 22:58:19,863 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-18 22:58:19,864 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-18 22:58:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-18 22:58:19,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1518589970, now seen corresponding path program 1 times [2019-12-18 22:58:19,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-18 22:58:19,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203248868] [2019-12-18 22:58:19,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-18 22:58:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-18 22:58:19,898 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 22:58:19,898 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203248868] [2019-12-18 22:58:19,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-18 22:58:19,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-18 22:58:19,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667876912] [2019-12-18 22:58:19,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-18 22:58:19,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-18 22:58:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-18 22:58:19,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-18 22:58:19,900 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand 4 states. [2019-12-18 22:58:19,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-18 22:58:19,913 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2019-12-18 22:58:19,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-18 22:58:19,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-18 22:58:19,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-18 22:58:19,913 INFO L225 Difference]: With dead ends: 17 [2019-12-18 22:58:19,914 INFO L226 Difference]: Without dead ends: 0 [2019-12-18 22:58:19,914 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 22:58:19,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-18 22:58:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-18 22:58:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-18 22:58:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-18 22:58:19,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-18 22:58:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-18 22:58:19,915 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-18 22:58:19,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-18 22:58:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-18 22:58:19,916 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-18 22:58:19,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:58:19 BasicIcfg [2019-12-18 22:58:19,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-18 22:58:19,922 INFO L168 Benchmark]: Toolchain (without parser) took 3963.25 ms. Allocated memory was 146.3 MB in the beginning and 245.4 MB in the end (delta: 99.1 MB). Free memory was 102.8 MB in the beginning and 136.1 MB in the end (delta: -33.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 7.1 GB. [2019-12-18 22:58:19,923 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-12-18 22:58:19,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.14 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 161.2 MB in the end (delta: -58.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:58:19,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.87 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-12-18 22:58:19,926 INFO L168 Benchmark]: Boogie Preprocessor took 24.74 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-12-18 22:58:19,927 INFO L168 Benchmark]: RCFGBuilder took 460.37 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 137.3 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:58:19,927 INFO L168 Benchmark]: TraceAbstraction took 2731.57 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 136.7 MB in the beginning and 136.1 MB in the end (delta: 562.5 kB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. [2019-12-18 22:58:19,932 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 146.3 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.14 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 161.2 MB in the end (delta: -58.9 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 51.87 ms. Allocated memory is still 203.9 MB. Free memory was 160.6 MB in the beginning and 158.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.74 ms. Allocated memory is still 203.9 MB. Free memory was 158.7 MB in the beginning and 157.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 460.37 ms. Allocated memory is still 203.9 MB. Free memory was 157.4 MB in the beginning and 137.3 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2731.57 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 136.7 MB in the beginning and 136.1 MB in the end (delta: 562.5 kB). Peak memory consumption was 42.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 489 CheckedPairsTotal, 43 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, 53 locations, 1 error locations. Result: SAFE, OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 57 SDslu, 66 SDs, 0 SdLazy, 54 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1553 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...