/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 00:43:12,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 00:43:12,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 00:43:12,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 00:43:12,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 00:43:12,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 00:43:12,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 00:43:12,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 00:43:12,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 00:43:12,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 00:43:12,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 00:43:12,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 00:43:12,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 00:43:12,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 00:43:12,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 00:43:12,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 00:43:12,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 00:43:12,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 00:43:12,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 00:43:12,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 00:43:12,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 00:43:12,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 00:43:12,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 00:43:12,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 00:43:12,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 00:43:12,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 00:43:12,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 00:43:12,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 00:43:12,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 00:43:12,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 00:43:12,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 00:43:12,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 00:43:12,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 00:43:12,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 00:43:12,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 00:43:12,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 00:43:12,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-22 00:43:12,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 00:43:12,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 00:43:12,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 00:43:12,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 00:43:12,924 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 00:43:12,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 00:43:12,924 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 00:43:12,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 00:43:12,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 00:43:12,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 00:43:12,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 00:43:12,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 00:43:12,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 00:43:12,926 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 00:43:12,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 00:43:12,926 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 00:43:12,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 00:43:12,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 00:43:12,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 00:43:12,927 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 00:43:12,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 00:43:12,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 00:43:12,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 00:43:12,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 00:43:12,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 00:43:12,928 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 00:43:12,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 00:43:12,929 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 00:43:12,929 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 00:43:12,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 00:43:12,929 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 00:43:13,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 00:43:13,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 00:43:13,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 00:43:13,260 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 00:43:13,261 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 00:43:13,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-10-22 00:43:13,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8354b45d9/9448a6fd63684a3a9d2055279ac1885f/FLAGc68c77246 [2020-10-22 00:43:13,888 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 00:43:13,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036_pso.oepc.i [2020-10-22 00:43:13,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8354b45d9/9448a6fd63684a3a9d2055279ac1885f/FLAGc68c77246 [2020-10-22 00:43:14,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8354b45d9/9448a6fd63684a3a9d2055279ac1885f [2020-10-22 00:43:14,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 00:43:14,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 00:43:14,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 00:43:14,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 00:43:14,264 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 00:43:14,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:14,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757c7976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14, skipping insertion in model container [2020-10-22 00:43:14,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:14,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 00:43:14,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 00:43:14,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:43:14,866 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 00:43:14,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 00:43:14,987 INFO L208 MainTranslator]: Completed translation [2020-10-22 00:43:14,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14 WrapperNode [2020-10-22 00:43:14,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 00:43:14,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 00:43:14,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 00:43:14,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 00:43:15,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 00:43:15,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 00:43:15,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 00:43:15,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 00:43:15,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (1/1) ... [2020-10-22 00:43:15,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 00:43:15,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 00:43:15,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 00:43:15,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 00:43:15,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (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 [2020-10-22 00:43:15,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 00:43:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 00:43:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 00:43:15,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 00:43:15,144 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 00:43:15,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 00:43:15,145 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 00:43:15,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 00:43:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 00:43:15,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 00:43:15,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 00:43:15,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 00:43:15,150 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 00:43:15,538 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 00:43:15,539 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 00:43:15,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:43:15 BoogieIcfgContainer [2020-10-22 00:43:15,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 00:43:15,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 00:43:15,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 00:43:15,545 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 00:43:15,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 12:43:14" (1/3) ... [2020-10-22 00:43:15,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3118964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:43:15, skipping insertion in model container [2020-10-22 00:43:15,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 12:43:14" (2/3) ... [2020-10-22 00:43:15,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3118964f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 12:43:15, skipping insertion in model container [2020-10-22 00:43:15,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 12:43:15" (3/3) ... [2020-10-22 00:43:15,550 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_pso.oepc.i [2020-10-22 00:43:15,561 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 00:43:15,562 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 00:43:15,569 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 00:43:15,570 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 00:43:15,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,597 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,597 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,598 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,598 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,599 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,600 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,601 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,605 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,605 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,606 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,606 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,611 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,612 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 00:43:15,613 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 00:43:15,627 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 00:43:15,646 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 00:43:15,646 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 00:43:15,646 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 00:43:15,646 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 00:43:15,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 00:43:15,647 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 00:43:15,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 00:43:15,647 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 00:43:15,660 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 00:43:15,661 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-22 00:43:15,664 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-10-22 00:43:15,666 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-10-22 00:43:15,715 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-10-22 00:43:15,715 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 00:43:15,720 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-22 00:43:15,723 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-10-22 00:43:17,097 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-22 00:43:17,203 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-10-22 00:43:17,203 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-10-22 00:43:17,209 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-10-22 00:43:17,223 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-10-22 00:43:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-22 00:43:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-22 00:43:17,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:43:17,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-22 00:43:17,232 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:43:17,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:43:17,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-10-22 00:43:17,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:43:17,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920784411] [2020-10-22 00:43:17,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:43:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:43:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:43:17,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920784411] [2020-10-22 00:43:17,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:43:17,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 00:43:17,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [469144513] [2020-10-22 00:43:17,419 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:43:17,422 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:43:17,434 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-10-22 00:43:17,434 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:43:17,438 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:43:17,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-22 00:43:17,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:43:17,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-22 00:43:17,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-22 00:43:17,451 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-10-22 00:43:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:43:17,460 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-10-22 00:43:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-22 00:43:17,461 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-10-22 00:43:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:43:17,471 INFO L225 Difference]: With dead ends: 90 [2020-10-22 00:43:17,471 INFO L226 Difference]: Without dead ends: 74 [2020-10-22 00:43:17,473 INFO L677 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 [2020-10-22 00:43:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-22 00:43:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-22 00:43:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-22 00:43:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-10-22 00:43:17,516 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-10-22 00:43:17,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:43:17,517 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-10-22 00:43:17,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-22 00:43:17,517 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-10-22 00:43:17,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-22 00:43:17,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:43:17,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:43:17,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 00:43:17,519 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:43:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:43:17,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-10-22 00:43:17,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:43:17,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723318527] [2020-10-22 00:43:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:43:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:43:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:43:17,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723318527] [2020-10-22 00:43:17,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:43:17,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 00:43:17,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1214618161] [2020-10-22 00:43:17,663 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:43:17,664 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:43:17,666 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2020-10-22 00:43:17,666 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:43:17,666 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:43:17,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 00:43:17,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:43:17,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 00:43:17,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 00:43:17,669 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-10-22 00:43:17,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:43:17,708 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-10-22 00:43:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:43:17,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-22 00:43:17,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:43:17,710 INFO L225 Difference]: With dead ends: 63 [2020-10-22 00:43:17,710 INFO L226 Difference]: Without dead ends: 47 [2020-10-22 00:43:17,711 INFO L677 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 [2020-10-22 00:43:17,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-22 00:43:17,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-22 00:43:17,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-22 00:43:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-10-22 00:43:17,718 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-10-22 00:43:17,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:43:17,719 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-10-22 00:43:17,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 00:43:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-10-22 00:43:17,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-22 00:43:17,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:43:17,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:43:17,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 00:43:17,720 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:43:17,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:43:17,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-10-22 00:43:17,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:43:17,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132701856] [2020-10-22 00:43:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:43:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:43:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:43:17,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132701856] [2020-10-22 00:43:17,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:43:17,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:43:17,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1154642687] [2020-10-22 00:43:17,842 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:43:17,843 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:43:17,853 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-10-22 00:43:17,856 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:43:17,937 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [660#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 00:43:17,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 00:43:17,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:43:17,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 00:43:17,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 00:43:17,939 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 6 states. [2020-10-22 00:43:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:43:17,983 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-10-22 00:43:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 00:43:17,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-22 00:43:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:43:17,984 INFO L225 Difference]: With dead ends: 36 [2020-10-22 00:43:17,984 INFO L226 Difference]: Without dead ends: 29 [2020-10-22 00:43:17,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:43:17,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-22 00:43:17,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-22 00:43:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-22 00:43:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-10-22 00:43:17,989 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-10-22 00:43:17,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:43:17,989 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-10-22 00:43:17,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 00:43:17,989 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-10-22 00:43:17,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 00:43:17,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:43:17,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:43:17,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 00:43:17,991 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:43:17,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:43:17,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-10-22 00:43:17,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:43:17,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210292918] [2020-10-22 00:43:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:43:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:43:18,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:43:18,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210292918] [2020-10-22 00:43:18,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:43:18,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:43:18,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1377425500] [2020-10-22 00:43:18,072 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:43:18,073 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:43:18,075 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-10-22 00:43:18,076 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:43:18,136 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:43:18,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:43:18,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:43:18,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:43:18,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:43:18,138 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-10-22 00:43:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:43:18,172 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-10-22 00:43:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:43:18,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 00:43:18,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:43:18,174 INFO L225 Difference]: With dead ends: 37 [2020-10-22 00:43:18,174 INFO L226 Difference]: Without dead ends: 17 [2020-10-22 00:43:18,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:43:18,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-22 00:43:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-22 00:43:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-22 00:43:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-10-22 00:43:18,177 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-10-22 00:43:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:43:18,177 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-10-22 00:43:18,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:43:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-10-22 00:43:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 00:43:18,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 00:43:18,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 00:43:18,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 00:43:18,179 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 00:43:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 00:43:18,179 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-10-22 00:43:18,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 00:43:18,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135678007] [2020-10-22 00:43:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 00:43:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 00:43:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 00:43:18,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135678007] [2020-10-22 00:43:18,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 00:43:18,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 00:43:18,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2000932288] [2020-10-22 00:43:18,231 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 00:43:18,232 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 00:43:18,235 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2020-10-22 00:43:18,235 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 00:43:18,236 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 00:43:18,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 00:43:18,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 00:43:18,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 00:43:18,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 00:43:18,237 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-10-22 00:43:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 00:43:18,259 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-10-22 00:43:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 00:43:18,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-22 00:43:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 00:43:18,260 INFO L225 Difference]: With dead ends: 16 [2020-10-22 00:43:18,260 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 00:43:18,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 00:43:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 00:43:18,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 00:43:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 00:43:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 00:43:18,261 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-22 00:43:18,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 00:43:18,261 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 00:43:18,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 00:43:18,262 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 00:43:18,262 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 00:43:18,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 00:43:18,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 12:43:18 BasicIcfg [2020-10-22 00:43:18,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 00:43:18,268 INFO L168 Benchmark]: Toolchain (without parser) took 4017.17 ms. Allocated memory was 144.7 MB in the beginning and 250.6 MB in the end (delta: 105.9 MB). Free memory was 98.0 MB in the beginning and 107.0 MB in the end (delta: -8.9 MB). Peak memory consumption was 97.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:43:18,269 INFO L168 Benchmark]: CDTParser took 2.65 ms. Allocated memory is still 144.7 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-22 00:43:18,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 730.15 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 97.0 MB in the beginning and 155.8 MB in the end (delta: -58.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:43:18,271 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.75 ms. Allocated memory is still 200.8 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 00:43:18,272 INFO L168 Benchmark]: Boogie Preprocessor took 28.17 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 152.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 00:43:18,273 INFO L168 Benchmark]: RCFGBuilder took 471.15 ms. Allocated memory is still 200.8 MB. Free memory was 152.4 MB in the beginning and 130.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-10-22 00:43:18,274 INFO L168 Benchmark]: TraceAbstraction took 2724.19 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 130.0 MB in the beginning and 107.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. [2020-10-22 00:43:18,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.65 ms. Allocated memory is still 144.7 MB. Free memory was 118.2 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 730.15 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 97.0 MB in the beginning and 155.8 MB in the end (delta: -58.8 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.75 ms. Allocated memory is still 200.8 MB. Free memory was 155.8 MB in the beginning and 153.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.17 ms. Allocated memory is still 200.8 MB. Free memory was 153.8 MB in the beginning and 152.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.15 ms. Allocated memory is still 200.8 MB. Free memory was 152.4 MB in the beginning and 130.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2724.19 ms. Allocated memory was 200.8 MB in the beginning and 250.6 MB in the end (delta: 49.8 MB). Free memory was 130.0 MB in the beginning and 107.0 MB in the end (delta: 23.0 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 435 VarBasedMoverChecksPositive, 11 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 25 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.5s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 MoverChecksTotal - PositiveResult [Line: 17]: 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 109 SDs, 0 SdLazy, 53 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...