/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/safe007_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:39:20,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:39:20,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:39:20,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:39:20,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:39:20,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:39:20,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:39:20,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:39:20,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:39:20,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:39:20,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:39:20,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:39:20,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:39:20,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:39:20,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:39:20,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:39:20,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:39:20,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:39:20,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:39:20,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:39:20,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:39:21,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:39:21,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:39:21,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:39:21,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:39:21,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:39:21,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:39:21,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:39:21,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:39:21,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:39:21,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:39:21,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:39:21,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:39:21,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:39:21,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:39:21,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:39:21,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:39:21,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:39:21,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:39:21,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:39:21,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:39:21,018 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 [2020-04-17 17:39:21,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:39:21,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:39:21,033 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:39:21,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:39:21,034 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:39:21,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:39:21,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:39:21,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:39:21,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:39:21,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:39:21,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:39:21,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:39:21,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:39:21,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:39:21,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:39:21,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:39:21,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:39:21,036 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:39:21,036 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:39:21,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:39:21,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:39:21,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:39:21,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:39:21,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:39:21,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:39:21,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:39:21,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:39:21,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:39:21,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:39:21,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:39:21,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:39:21,362 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:39:21,366 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:39:21,368 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:39:21,368 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:39:21,369 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-04-17 17:39:21,446 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a481b839/bd45acd15e3b4f8990e3ca934b0c5861/FLAG63bc075cf [2020-04-17 17:39:22,064 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:39:22,067 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_tso.oepc.i [2020-04-17 17:39:22,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a481b839/bd45acd15e3b4f8990e3ca934b0c5861/FLAG63bc075cf [2020-04-17 17:39:22,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a481b839/bd45acd15e3b4f8990e3ca934b0c5861 [2020-04-17 17:39:22,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:39:22,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:39:22,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:39:22,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:39:22,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:39:22,329 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:39:22" (1/1) ... [2020-04-17 17:39:22,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c8c7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:22, skipping insertion in model container [2020-04-17 17:39:22,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:39:22" (1/1) ... [2020-04-17 17:39:22,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:39:22,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:39:22,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:39:22,956 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:39:22,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:39:23,072 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:39:23,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23 WrapperNode [2020-04-17 17:39:23,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:39:23,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:39:23,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:39:23,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:39:23,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:39:23,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:39:23,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:39:23,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:39:23,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... [2020-04-17 17:39:23,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:39:23,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:39:23,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:39:23,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:39:23,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:39:23,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:39:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:39:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:39:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:39:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:39:23,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:39:23,223 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:39:23,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:39:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:39:23,224 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:39:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:39:23,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:39:23,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:39:23,226 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:39:23,645 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:39:23,646 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:39:23,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:39:23 BoogieIcfgContainer [2020-04-17 17:39:23,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:39:23,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:39:23,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:39:23,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:39:23,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:39:22" (1/3) ... [2020-04-17 17:39:23,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a95538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:39:23, skipping insertion in model container [2020-04-17 17:39:23,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:39:23" (2/3) ... [2020-04-17 17:39:23,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a95538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:39:23, skipping insertion in model container [2020-04-17 17:39:23,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:39:23" (3/3) ... [2020-04-17 17:39:23,659 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.oepc.i [2020-04-17 17:39:23,670 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:39:23,670 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:39:23,677 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:39:23,678 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:39:23,704 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,705 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,705 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,705 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,706 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,706 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,707 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,707 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,707 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,707 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,708 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,708 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,709 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,709 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,709 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,709 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,710 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,710 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,714 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,715 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,715 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,715 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,721 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,722 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,722 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,722 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,725 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,725 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,725 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,726 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:39:23,743 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:39:23,760 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:39:23,760 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:39:23,760 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:39:23,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:39:23,761 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:39:23,761 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:39:23,761 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:39:23,761 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:39:23,778 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 71 transitions, 157 flow [2020-04-17 17:39:23,780 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 17:39:23,823 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 17:39:23,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:39:23,828 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:39:23,831 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 79 places, 71 transitions, 157 flow [2020-04-17 17:39:23,853 INFO L129 PetriNetUnfolder]: 2/68 cut-off events. [2020-04-17 17:39:23,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:39:23,856 INFO L80 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 2/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:39:23,860 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 17:39:23,863 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:39:25,475 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-04-17 17:39:25,629 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2463 [2020-04-17 17:39:25,629 INFO L214 etLargeBlockEncoding]: Total number of compositions: 57 [2020-04-17 17:39:25,636 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-04-17 17:39:25,699 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-04-17 17:39:25,702 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-04-17 17:39:25,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:39:25,715 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:39:25,716 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:39:25,717 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:39:25,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:39:25,725 INFO L82 PathProgramCache]: Analyzing trace with hash -691335731, now seen corresponding path program 1 times [2020-04-17 17:39:25,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:39:25,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856529885] [2020-04-17 17:39:25,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:39:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:39:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:39:26,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856529885] [2020-04-17 17:39:26,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:39:26,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:39:26,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952559269] [2020-04-17 17:39:26,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-04-17 17:39:26,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:39:26,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-04-17 17:39:26,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:39:26,037 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-04-17 17:39:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:39:26,069 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-04-17 17:39:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-04-17 17:39:26,070 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-04-17 17:39:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:39:26,090 INFO L225 Difference]: With dead ends: 362 [2020-04-17 17:39:26,094 INFO L226 Difference]: Without dead ends: 298 [2020-04-17 17:39:26,096 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-04-17 17:39:26,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-04-17 17:39:26,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-04-17 17:39:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-04-17 17:39:26,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-04-17 17:39:26,179 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-04-17 17:39:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:39:26,181 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-04-17 17:39:26,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-04-17 17:39:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-04-17 17:39:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:39:26,183 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:39:26,183 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:39:26,183 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:39:26,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:39:26,184 INFO L82 PathProgramCache]: Analyzing trace with hash 43425274, now seen corresponding path program 1 times [2020-04-17 17:39:26,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:39:26,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535989059] [2020-04-17 17:39:26,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:39:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:39:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:39:26,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535989059] [2020-04-17 17:39:26,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:39:26,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:39:26,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907591254] [2020-04-17 17:39:26,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:39:26,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:39:26,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:39:26,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:39:26,354 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-04-17 17:39:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:39:26,392 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-04-17 17:39:26,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:39:26,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:39:26,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:39:26,397 INFO L225 Difference]: With dead ends: 330 [2020-04-17 17:39:26,397 INFO L226 Difference]: Without dead ends: 266 [2020-04-17 17:39:26,398 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:39:26,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-04-17 17:39:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-04-17 17:39:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-04-17 17:39:26,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-04-17 17:39:26,424 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-04-17 17:39:26,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:39:26,424 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-04-17 17:39:26,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:39:26,424 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-04-17 17:39:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-17 17:39:26,426 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:39:26,426 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:39:26,426 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:39:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:39:26,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1226466257, now seen corresponding path program 1 times [2020-04-17 17:39:26,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:39:26,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648363832] [2020-04-17 17:39:26,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:39:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:39:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:39:26,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648363832] [2020-04-17 17:39:26,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:39:26,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:39:26,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879650613] [2020-04-17 17:39:26,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:39:26,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:39:26,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:39:26,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:39:26,552 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 6 states. [2020-04-17 17:39:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:39:26,654 INFO L93 Difference]: Finished difference Result 350 states and 940 transitions. [2020-04-17 17:39:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-04-17 17:39:26,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-04-17 17:39:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:39:26,657 INFO L225 Difference]: With dead ends: 350 [2020-04-17 17:39:26,658 INFO L226 Difference]: Without dead ends: 182 [2020-04-17 17:39:26,658 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-04-17 17:39:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-04-17 17:39:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-04-17 17:39:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-04-17 17:39:26,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 458 transitions. [2020-04-17 17:39:26,672 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 458 transitions. Word has length 10 [2020-04-17 17:39:26,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:39:26,672 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 458 transitions. [2020-04-17 17:39:26,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:39:26,673 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 458 transitions. [2020-04-17 17:39:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:39:26,674 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:39:26,674 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:39:26,675 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:39:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:39:26,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1670897012, now seen corresponding path program 1 times [2020-04-17 17:39:26,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:39:26,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457997625] [2020-04-17 17:39:26,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:39:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:39:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:39:26,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457997625] [2020-04-17 17:39:26,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:39:26,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:39:26,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771996580] [2020-04-17 17:39:26,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:39:26,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:39:26,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:39:26,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:39:26,726 INFO L87 Difference]: Start difference. First operand 182 states and 458 transitions. Second operand 4 states. [2020-04-17 17:39:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:39:26,760 INFO L93 Difference]: Finished difference Result 194 states and 472 transitions. [2020-04-17 17:39:26,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:39:26,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-04-17 17:39:26,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:39:26,762 INFO L225 Difference]: With dead ends: 194 [2020-04-17 17:39:26,763 INFO L226 Difference]: Without dead ends: 170 [2020-04-17 17:39:26,764 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:39:26,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-04-17 17:39:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-04-17 17:39:26,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-04-17 17:39:26,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 420 transitions. [2020-04-17 17:39:26,779 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 420 transitions. Word has length 12 [2020-04-17 17:39:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:39:26,779 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 420 transitions. [2020-04-17 17:39:26,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:39:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 420 transitions. [2020-04-17 17:39:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:39:26,781 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:39:26,783 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:39:26,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:39:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:39:26,784 INFO L82 PathProgramCache]: Analyzing trace with hash 257080554, now seen corresponding path program 1 times [2020-04-17 17:39:26,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:39:26,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551077004] [2020-04-17 17:39:26,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:39:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:39:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:39:26,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551077004] [2020-04-17 17:39:26,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:39:26,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:39:26,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514080093] [2020-04-17 17:39:26,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:39:26,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:39:26,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:39:26,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:39:26,868 INFO L87 Difference]: Start difference. First operand 170 states and 420 transitions. Second operand 5 states. [2020-04-17 17:39:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:39:26,922 INFO L93 Difference]: Finished difference Result 194 states and 469 transitions. [2020-04-17 17:39:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:39:26,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-04-17 17:39:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:39:26,924 INFO L225 Difference]: With dead ends: 194 [2020-04-17 17:39:26,924 INFO L226 Difference]: Without dead ends: 98 [2020-04-17 17:39:26,925 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:39:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-17 17:39:26,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-04-17 17:39:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-04-17 17:39:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-04-17 17:39:26,940 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-04-17 17:39:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:39:26,940 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-04-17 17:39:26,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:39:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-04-17 17:39:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:39:26,942 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:39:26,942 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:39:26,942 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:39:26,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:39:26,946 INFO L82 PathProgramCache]: Analyzing trace with hash -647415272, now seen corresponding path program 1 times [2020-04-17 17:39:26,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:39:26,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662951910] [2020-04-17 17:39:26,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:39:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:39:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:39:27,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662951910] [2020-04-17 17:39:27,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:39:27,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:39:27,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318709575] [2020-04-17 17:39:27,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:39:27,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:39:27,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:39:27,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:39:27,067 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-04-17 17:39:27,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:39:27,104 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2020-04-17 17:39:27,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:39:27,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 17:39:27,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:39:27,105 INFO L225 Difference]: With dead ends: 86 [2020-04-17 17:39:27,105 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:39:27,105 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-04-17 17:39:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:39:27,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:39:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:39:27,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:39:27,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-17 17:39:27,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:39:27,107 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:39:27,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:39:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:39:27,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:39:27,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:39:27 BasicIcfg [2020-04-17 17:39:27,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:39:27,114 INFO L168 Benchmark]: Toolchain (without parser) took 4813.59 ms. Allocated memory was 144.2 MB in the beginning and 249.0 MB in the end (delta: 104.9 MB). Free memory was 100.3 MB in the beginning and 205.8 MB in the end (delta: -105.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 17:39:27,114 INFO L168 Benchmark]: CDTParser took 1.54 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-04-17 17:39:27,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.78 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.5 MB in the beginning and 155.9 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:39:27,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.48 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:39:27,117 INFO L168 Benchmark]: Boogie Preprocessor took 26.02 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:39:27,118 INFO L168 Benchmark]: RCFGBuilder took 482.47 ms. Allocated memory is still 201.3 MB. Free memory was 152.5 MB in the beginning and 129.9 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-04-17 17:39:27,119 INFO L168 Benchmark]: TraceAbstraction took 3460.15 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 129.9 MB in the beginning and 205.8 MB in the end (delta: -76.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-17 17:39:27,123 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.54 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.78 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 98.5 MB in the beginning and 155.9 MB in the end (delta: -57.5 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 67.48 ms. Allocated memory is still 201.3 MB. Free memory was 155.9 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.02 ms. Allocated memory is still 201.3 MB. Free memory was 153.9 MB in the beginning and 152.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 482.47 ms. Allocated memory is still 201.3 MB. Free memory was 152.5 MB in the beginning and 129.9 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3460.15 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 129.9 MB in the beginning and 205.8 MB in the end (delta: -76.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 79 ProgramPointsBefore, 32 ProgramPointsAfterwards, 71 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 688 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 17 SemBasedMoverChecksPositive, 29 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2463 CheckedPairsTotal, 57 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 127 SDtfs, 160 SDslu, 180 SDs, 0 SdLazy, 68 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...