/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/safe023_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:41:08,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:41:08,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:41:08,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:41:08,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:41:08,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:41:08,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:41:08,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:41:08,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:41:08,095 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:41:08,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:41:08,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:41:08,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:41:08,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:41:08,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:41:08,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:41:08,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:41:08,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:41:08,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:41:08,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:41:08,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:41:08,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:41:08,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:41:08,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:41:08,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:41:08,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:41:08,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:41:08,170 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:41:08,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:41:08,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:41:08,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:41:08,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:41:08,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:41:08,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:41:08,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:41:08,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:41:08,177 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 [2020-11-09 15:41:08,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:41:08,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:41:08,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:41:08,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:41:08,243 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:41:08,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:41:08,244 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:41:08,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:41:08,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:41:08,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:41:08,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:41:08,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:41:08,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:41:08,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:41:08,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:41:08,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:41:08,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:41:08,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:41:08,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:41:08,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:41:08,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:41:08,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:41:08,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:41:08,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:41:08,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:41:08,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:41:08,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:41:08,249 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:41:08,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:41:08,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:41:08,250 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:41:08,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:41:08,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:41:08,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:41:08,715 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:41:08,716 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:41:08,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-11-09 15:41:08,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feff8d60b/dacb764625ac4a0a967dfca6137dd34e/FLAG03de98c39 [2020-11-09 15:41:09,622 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:41:09,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.opt.i [2020-11-09 15:41:09,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feff8d60b/dacb764625ac4a0a967dfca6137dd34e/FLAG03de98c39 [2020-11-09 15:41:09,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feff8d60b/dacb764625ac4a0a967dfca6137dd34e [2020-11-09 15:41:09,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:41:09,890 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:41:09,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:41:09,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:41:09,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:41:09,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:41:09" (1/1) ... [2020-11-09 15:41:09,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bceddfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:09, skipping insertion in model container [2020-11-09 15:41:09,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:41:09" (1/1) ... [2020-11-09 15:41:09,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:41:09,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:41:10,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:41:10,444 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:41:10,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:41:10,648 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:41:10,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10 WrapperNode [2020-11-09 15:41:10,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:41:10,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:41:10,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:41:10,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:41:10,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:41:10,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:41:10,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:41:10,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:41:10,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (1/1) ... [2020-11-09 15:41:10,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:41:10,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:41:10,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:41:10,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:41:10,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (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 [2020-11-09 15:41:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:41:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:41:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:41:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:41:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:41:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:41:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:41:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:41:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:41:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:41:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:41:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:41:10,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:41:10,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:41:10,893 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:41:11,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:41:11,406 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:41:11,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:41:11 BoogieIcfgContainer [2020-11-09 15:41:11,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:41:11,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:41:11,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:41:11,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:41:11,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:41:09" (1/3) ... [2020-11-09 15:41:11,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7def19e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:41:11, skipping insertion in model container [2020-11-09 15:41:11,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:41:10" (2/3) ... [2020-11-09 15:41:11,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7def19e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:41:11, skipping insertion in model container [2020-11-09 15:41:11,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:41:11" (3/3) ... [2020-11-09 15:41:11,417 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.opt.i [2020-11-09 15:41:11,433 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:41:11,434 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:41:11,438 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:41:11,439 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:41:11,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,475 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,475 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,475 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,476 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,476 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,477 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,478 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,478 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,478 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,478 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,479 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,479 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,479 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,479 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,481 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,481 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,481 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,481 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,481 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,482 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,482 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,482 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,483 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,485 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,486 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,486 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,499 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,499 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,500 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:41:11,503 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:41:11,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:41:11,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:41:11,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:41:11,539 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:41:11,539 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:41:11,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:41:11,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:41:11,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:41:11,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:41:11,553 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:41:11,554 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:41:11,557 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:41:11,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 15:41:11,606 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 15:41:11,606 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:41:11,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:41:11,615 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:41:15,058 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-11-09 15:41:15,890 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 15:41:16,021 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:41:16,268 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-11-09 15:41:16,384 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 15:41:16,556 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-11-09 15:41:16,556 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-11-09 15:41:16,563 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 15:41:16,610 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 15:41:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 15:41:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:41:16,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:16,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:16,624 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:16,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-11-09 15:41:16,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:16,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643126623] [2020-11-09 15:41:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:16,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:16,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643126623] [2020-11-09 15:41:16,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:16,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:41:16,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1656335736] [2020-11-09 15:41:16,918 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:16,921 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:16,937 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:41:16,937 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:16,942 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:16,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:41:16,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:16,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:41:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:16,962 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 15:41:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:17,014 INFO L93 Difference]: Finished difference Result 294 states and 849 transitions. [2020-11-09 15:41:17,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:41:17,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 15:41:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:17,034 INFO L225 Difference]: With dead ends: 294 [2020-11-09 15:41:17,034 INFO L226 Difference]: Without dead ends: 230 [2020-11-09 15:41:17,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-09 15:41:17,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-09 15:41:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-09 15:41:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 641 transitions. [2020-11-09 15:41:17,149 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 641 transitions. Word has length 8 [2020-11-09 15:41:17,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:17,151 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 641 transitions. [2020-11-09 15:41:17,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:41:17,151 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 641 transitions. [2020-11-09 15:41:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:41:17,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:17,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:17,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:41:17,154 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash 305615834, now seen corresponding path program 1 times [2020-11-09 15:41:17,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:17,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800325818] [2020-11-09 15:41:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:17,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800325818] [2020-11-09 15:41:17,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:17,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:41:17,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [979053431] [2020-11-09 15:41:17,282 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:17,283 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:17,286 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-11-09 15:41:17,286 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:17,318 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:17,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:41:17,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:17,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:41:17,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:17,321 INFO L87 Difference]: Start difference. First operand 230 states and 641 transitions. Second operand 3 states. [2020-11-09 15:41:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:17,331 INFO L93 Difference]: Finished difference Result 215 states and 589 transitions. [2020-11-09 15:41:17,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:41:17,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 15:41:17,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:17,335 INFO L225 Difference]: With dead ends: 215 [2020-11-09 15:41:17,335 INFO L226 Difference]: Without dead ends: 215 [2020-11-09 15:41:17,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:17,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-09 15:41:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-11-09 15:41:17,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-09 15:41:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 589 transitions. [2020-11-09 15:41:17,353 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 589 transitions. Word has length 9 [2020-11-09 15:41:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:17,354 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 589 transitions. [2020-11-09 15:41:17,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:41:17,354 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 589 transitions. [2020-11-09 15:41:17,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:41:17,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:17,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:17,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:41:17,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:17,357 INFO L82 PathProgramCache]: Analyzing trace with hash 884125177, now seen corresponding path program 1 times [2020-11-09 15:41:17,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:17,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143009293] [2020-11-09 15:41:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:17,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143009293] [2020-11-09 15:41:17,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:17,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:41:17,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [375920520] [2020-11-09 15:41:17,466 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:17,467 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:17,470 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-11-09 15:41:17,470 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:17,563 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:17,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:41:17,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:17,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:41:17,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:41:17,565 INFO L87 Difference]: Start difference. First operand 215 states and 589 transitions. Second operand 4 states. [2020-11-09 15:41:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:17,608 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-11-09 15:41:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:41:17,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-09 15:41:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:17,611 INFO L225 Difference]: With dead ends: 242 [2020-11-09 15:41:17,612 INFO L226 Difference]: Without dead ends: 146 [2020-11-09 15:41:17,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:41:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-11-09 15:41:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-11-09 15:41:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-11-09 15:41:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-11-09 15:41:17,621 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-11-09 15:41:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:17,622 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-11-09 15:41:17,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:41:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-11-09 15:41:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:41:17,623 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:17,623 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:17,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:41:17,624 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:17,624 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-11-09 15:41:17,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:17,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926015195] [2020-11-09 15:41:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:17,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:17,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926015195] [2020-11-09 15:41:17,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:17,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:41:17,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [394041571] [2020-11-09 15:41:17,675 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:17,695 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:17,698 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 15:41:17,698 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:17,736 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:17,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:41:17,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:17,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:41:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:17,737 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-11-09 15:41:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:17,745 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-11-09 15:41:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:41:17,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 15:41:17,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:17,747 INFO L225 Difference]: With dead ends: 134 [2020-11-09 15:41:17,747 INFO L226 Difference]: Without dead ends: 134 [2020-11-09 15:41:17,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:17,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-09 15:41:17,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-11-09 15:41:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-09 15:41:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-11-09 15:41:17,756 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-11-09 15:41:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:17,756 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-11-09 15:41:17,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:41:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-11-09 15:41:17,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:41:17,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:17,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:17,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:41:17,758 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:17,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:17,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1054826072, now seen corresponding path program 1 times [2020-11-09 15:41:17,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:17,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021213385] [2020-11-09 15:41:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:17,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021213385] [2020-11-09 15:41:17,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:17,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:41:17,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [548398252] [2020-11-09 15:41:17,826 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:17,827 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:17,833 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-11-09 15:41:17,833 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:17,966 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:17,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:41:17,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:17,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:41:17,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:17,968 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 3 states. [2020-11-09 15:41:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:17,993 INFO L93 Difference]: Finished difference Result 206 states and 495 transitions. [2020-11-09 15:41:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:41:17,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-09 15:41:17,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:17,996 INFO L225 Difference]: With dead ends: 206 [2020-11-09 15:41:17,996 INFO L226 Difference]: Without dead ends: 110 [2020-11-09 15:41:17,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:41:17,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-09 15:41:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-11-09 15:41:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-11-09 15:41:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-11-09 15:41:18,002 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 13 [2020-11-09 15:41:18,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:18,002 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-11-09 15:41:18,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:41:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-11-09 15:41:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:41:18,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:18,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:18,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:41:18,008 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:18,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1395741464, now seen corresponding path program 2 times [2020-11-09 15:41:18,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:18,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138076218] [2020-11-09 15:41:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:18,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138076218] [2020-11-09 15:41:18,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:18,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:41:18,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2103313457] [2020-11-09 15:41:18,096 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:18,099 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:18,106 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 76 transitions. [2020-11-09 15:41:18,107 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:18,191 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:18,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:41:18,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:18,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:41:18,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:41:18,192 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-11-09 15:41:18,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:18,236 INFO L93 Difference]: Finished difference Result 158 states and 361 transitions. [2020-11-09 15:41:18,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:41:18,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 15:41:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:18,238 INFO L225 Difference]: With dead ends: 158 [2020-11-09 15:41:18,238 INFO L226 Difference]: Without dead ends: 86 [2020-11-09 15:41:18,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:41:18,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-09 15:41:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-09 15:41:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-09 15:41:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-11-09 15:41:18,243 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 13 [2020-11-09 15:41:18,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:18,243 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-11-09 15:41:18,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:41:18,244 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-11-09 15:41:18,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:41:18,245 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:18,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:18,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:41:18,245 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:18,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:18,246 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 3 times [2020-11-09 15:41:18,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:18,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632364049] [2020-11-09 15:41:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:18,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632364049] [2020-11-09 15:41:18,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:18,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:41:18,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [689794800] [2020-11-09 15:41:18,382 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:18,384 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:18,390 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-11-09 15:41:18,390 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:18,507 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:41:18,531 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:41:18,548 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:41:18,569 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:41:18,588 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:18,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:41:18,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:18,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:41:18,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:41:18,592 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-11-09 15:41:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:18,646 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-09 15:41:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:41:18,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-09 15:41:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:18,648 INFO L225 Difference]: With dead ends: 99 [2020-11-09 15:41:18,648 INFO L226 Difference]: Without dead ends: 77 [2020-11-09 15:41:18,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:41:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-09 15:41:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-11-09 15:41:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-09 15:41:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-11-09 15:41:18,652 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-11-09 15:41:18,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:18,652 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-11-09 15:41:18,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:41:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-11-09 15:41:18,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:41:18,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:18,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:18,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:41:18,654 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:18,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-11-09 15:41:18,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:18,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155412503] [2020-11-09 15:41:18,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:18,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155412503] [2020-11-09 15:41:18,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:18,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:41:18,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1970318355] [2020-11-09 15:41:18,801 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:18,803 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:18,810 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2020-11-09 15:41:18,810 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:18,830 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:41:18,857 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:41:19,047 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4065#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:41:19,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 15:41:19,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:19,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 15:41:19,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-09 15:41:19,049 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 6 states. [2020-11-09 15:41:19,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:19,158 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-11-09 15:41:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:41:19,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-09 15:41:19,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:19,160 INFO L225 Difference]: With dead ends: 78 [2020-11-09 15:41:19,160 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 15:41:19,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:41:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 15:41:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-09 15:41:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-09 15:41:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-11-09 15:41:19,164 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-11-09 15:41:19,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:19,165 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-11-09 15:41:19,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 15:41:19,168 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-11-09 15:41:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:41:19,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:19,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:19,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:41:19,169 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:19,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:19,176 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-11-09 15:41:19,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:19,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474803103] [2020-11-09 15:41:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:19,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474803103] [2020-11-09 15:41:19,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:19,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:41:19,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [620231132] [2020-11-09 15:41:19,338 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:19,340 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:19,348 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 84 transitions. [2020-11-09 15:41:19,349 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:19,522 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4278#(<= ~__unbuffered_cnt~0 0)] [2020-11-09 15:41:19,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 15:41:19,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:19,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 15:41:19,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:41:19,524 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 7 states. [2020-11-09 15:41:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:19,583 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-11-09 15:41:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:41:19,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-09 15:41:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:19,585 INFO L225 Difference]: With dead ends: 60 [2020-11-09 15:41:19,585 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 15:41:19,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:41:19,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 15:41:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 15:41:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 15:41:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-09 15:41:19,587 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-11-09 15:41:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:19,588 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-09 15:41:19,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 15:41:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-09 15:41:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:41:19,589 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:41:19,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:41:19,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:41:19,589 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:41:19,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:41:19,590 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-11-09 15:41:19,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:41:19,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762077153] [2020-11-09 15:41:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:41:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:41:19,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:41:19,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762077153] [2020-11-09 15:41:19,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:41:19,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:41:19,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2055001058] [2020-11-09 15:41:19,628 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:41:19,630 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:41:19,638 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-11-09 15:41:19,638 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:41:19,696 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:41:19,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:41:19,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:41:19,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:41:19,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:41:19,698 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-09 15:41:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:41:19,713 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-11-09 15:41:19,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:41:19,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 15:41:19,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:41:19,714 INFO L225 Difference]: With dead ends: 53 [2020-11-09 15:41:19,714 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:41:19,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:41:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:41:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:41:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:41:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:41:19,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 15:41:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:41:19,716 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:41:19,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:41:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:41:19,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:41:19,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:41:19,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:41:19 BasicIcfg [2020-11-09 15:41:19,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:41:19,721 INFO L168 Benchmark]: Toolchain (without parser) took 9836.50 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 124.4 MB in the beginning and 123.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 69.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:41:19,722 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:41:19,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 757.80 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 127.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:41:19,723 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.21 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 125.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:41:19,724 INFO L168 Benchmark]: Boogie Preprocessor took 52.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 124.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:41:19,725 INFO L168 Benchmark]: RCFGBuilder took 602.64 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 102.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:41:19,725 INFO L168 Benchmark]: TraceAbstraction took 8309.68 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 102.2 MB in the beginning and 123.2 MB in the end (delta: -21.0 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:41:19,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 757.80 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 127.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 101.21 ms. Allocated memory is still 151.0 MB. Free memory was 127.9 MB in the beginning and 125.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.03 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 124.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 602.64 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 102.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8309.68 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 102.2 MB in the beginning and 123.2 MB in the end (delta: -21.0 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 775 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.9s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 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 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 189 SDtfs, 103 SDslu, 202 SDs, 0 SdLazy, 122 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 151 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 3581 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...