/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:35:53,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:35:53,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:35:53,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:35:53,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 23:35:53,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 23:35:53,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 23:35:53,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 23:35:53,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 23:35:53,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 23:35:53,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 23:35:53,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 23:35:53,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 23:35:53,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 23:35:53,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 23:35:53,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 23:35:53,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 23:35:53,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:35:53,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:35:53,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:35:53,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-05-21 23:35:53,145 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:35:53,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:35:53,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:35:53,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:35:53,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:35:53,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:35:53,148 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:35:53,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:35:53,148 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:35:53,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:35:53,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:35:53,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:35:53,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:35:53,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:35:53,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:35:53,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:35:53,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:35:53,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:35:53,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:35:53,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:35:53,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:35:53,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:35:53,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:35:53,442 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:35:53,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-05-21 23:35:53,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c81fac7/0867fa02f7dc423fb3acaeb38ba8d0f2/FLAGea3637763 [2021-05-21 23:35:53,881 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:35:53,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-05-21 23:35:53,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c81fac7/0867fa02f7dc423fb3acaeb38ba8d0f2/FLAGea3637763 [2021-05-21 23:35:53,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c81fac7/0867fa02f7dc423fb3acaeb38ba8d0f2 [2021-05-21 23:35:53,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:35:53,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:35:53,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:35:53,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:35:53,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:35:53,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:35:53" (1/1) ... [2021-05-21 23:35:53,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78fc3dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:53, skipping insertion in model container [2021-05-21 23:35:53,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:35:53" (1/1) ... [2021-05-21 23:35:53,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:35:53,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:35:54,095 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-05-21 23:35:54,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:35:54,233 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:35:54,241 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i[950,963] [2021-05-21 23:35:54,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:35:54,326 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:35:54,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54 WrapperNode [2021-05-21 23:35:54,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:35:54,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:35:54,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:35:54,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:35:54,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:35:54,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:35:54,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:35:54,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:35:54,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (1/1) ... [2021-05-21 23:35:54,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:35:54,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:35:54,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:35:54,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:35:54,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (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 [2021-05-21 23:35:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:35:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:35:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:35:54,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:35:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:35:54,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:35:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:35:54,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:35:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:35:54,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:35:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:35:54,485 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:35:54,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:35:54,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:35:54,487 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 23:35:54,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:35:54,795 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:35:54,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:35:54 BoogieIcfgContainer [2021-05-21 23:35:54,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:35:54,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:35:54,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:35:54,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:35:54,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:35:53" (1/3) ... [2021-05-21 23:35:54,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56444997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:35:54, skipping insertion in model container [2021-05-21 23:35:54,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:35:54" (2/3) ... [2021-05-21 23:35:54,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56444997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:35:54, skipping insertion in model container [2021-05-21 23:35:54,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:35:54" (3/3) ... [2021-05-21 23:35:54,801 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-05-21 23:35:54,805 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:35:54,805 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:35:54,805 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:35:54,806 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:35:54,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,822 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,822 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,823 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,823 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,823 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,823 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,824 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,825 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,825 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,826 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,827 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,827 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,827 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,829 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,831 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,832 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,833 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,833 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,833 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:35:54,834 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:35:54,848 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:35:54,860 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:35:54,860 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:35:54,860 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:35:54,860 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:35:54,860 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:35:54,860 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:35:54,860 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:35:54,860 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:35:54,867 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:35:55,210 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 23:35:55,298 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:55,298 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:55,299 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:55,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:55,305 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-05-21 23:35:55,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:55,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071211345] [2021-05-21 23:35:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:55,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:55,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071211345] [2021-05-21 23:35:55,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071211345] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:55,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:55,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:55,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579985452] [2021-05-21 23:35:55,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:55,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:55,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:55,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:55,644 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:56,057 INFO L93 Difference]: Finished difference Result 21089 states and 72806 transitions. [2021-05-21 23:35:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:56,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-05-21 23:35:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:56,125 INFO L225 Difference]: With dead ends: 21089 [2021-05-21 23:35:56,125 INFO L226 Difference]: Without dead ends: 7269 [2021-05-21 23:35:56,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 129.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2021-05-21 23:35:56,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 6135. [2021-05-21 23:35:56,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6134 states have (on average 3.373165960221715) internal successors, (20691), 6134 states have internal predecessors, (20691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 20691 transitions. [2021-05-21 23:35:56,473 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 20691 transitions. Word has length 49 [2021-05-21 23:35:56,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:56,476 INFO L482 AbstractCegarLoop]: Abstraction has 6135 states and 20691 transitions. [2021-05-21 23:35:56,477 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:56,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 20691 transitions. [2021-05-21 23:35:56,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 23:35:56,493 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:56,494 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:56,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:35:56,494 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash -831184694, now seen corresponding path program 1 times [2021-05-21 23:35:56,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:56,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441860330] [2021-05-21 23:35:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:56,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:56,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:56,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441860330] [2021-05-21 23:35:56,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441860330] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:56,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:56,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:56,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268544996] [2021-05-21 23:35:56,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:56,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:56,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:56,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:56,647 INFO L87 Difference]: Start difference. First operand 6135 states and 20691 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:56,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:56,953 INFO L93 Difference]: Finished difference Result 9517 states and 31675 transitions. [2021-05-21 23:35:56,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 23:35:56,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-05-21 23:35:56,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:56,988 INFO L225 Difference]: With dead ends: 9517 [2021-05-21 23:35:56,988 INFO L226 Difference]: Without dead ends: 7517 [2021-05-21 23:35:56,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 242.0ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-05-21 23:35:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2021-05-21 23:35:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 6104. [2021-05-21 23:35:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.362116991643454) internal successors, (20519), 6103 states have internal predecessors, (20519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 20519 transitions. [2021-05-21 23:35:57,176 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 20519 transitions. Word has length 51 [2021-05-21 23:35:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:57,176 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 20519 transitions. [2021-05-21 23:35:57,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 20519 transitions. [2021-05-21 23:35:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-21 23:35:57,185 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:57,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:57,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:35:57,186 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:57,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1915177392, now seen corresponding path program 1 times [2021-05-21 23:35:57,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:57,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292071160] [2021-05-21 23:35:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:57,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:57,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:57,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292071160] [2021-05-21 23:35:57,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292071160] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:57,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:57,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:57,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117021290] [2021-05-21 23:35:57,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:57,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:57,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:57,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:57,294 INFO L87 Difference]: Start difference. First operand 6104 states and 20519 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:57,519 INFO L93 Difference]: Finished difference Result 8464 states and 28055 transitions. [2021-05-21 23:35:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 23:35:57,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-05-21 23:35:57,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:57,540 INFO L225 Difference]: With dead ends: 8464 [2021-05-21 23:35:57,540 INFO L226 Difference]: Without dead ends: 4308 [2021-05-21 23:35:57,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-05-21 23:35:57,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2021-05-21 23:35:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3848. [2021-05-21 23:35:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.260722641018976) internal successors, (12544), 3847 states have internal predecessors, (12544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12544 transitions. [2021-05-21 23:35:57,616 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12544 transitions. Word has length 51 [2021-05-21 23:35:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:57,621 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12544 transitions. [2021-05-21 23:35:57,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,621 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12544 transitions. [2021-05-21 23:35:57,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-21 23:35:57,628 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:57,628 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:57,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:35:57,628 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:57,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:57,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1721389007, now seen corresponding path program 1 times [2021-05-21 23:35:57,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:57,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823314316] [2021-05-21 23:35:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:57,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:57,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823314316] [2021-05-21 23:35:57,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823314316] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:57,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:57,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:57,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920877320] [2021-05-21 23:35:57,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:57,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:57,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:57,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:57,738 INFO L87 Difference]: Start difference. First operand 3848 states and 12544 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:57,826 INFO L93 Difference]: Finished difference Result 4248 states and 13759 transitions. [2021-05-21 23:35:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:57,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-05-21 23:35:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:57,836 INFO L225 Difference]: With dead ends: 4248 [2021-05-21 23:35:57,836 INFO L226 Difference]: Without dead ends: 3548 [2021-05-21 23:35:57,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2021-05-21 23:35:57,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3548. [2021-05-21 23:35:57,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3547 states have (on average 3.2320270651254583) internal successors, (11464), 3547 states have internal predecessors, (11464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 11464 transitions. [2021-05-21 23:35:57,915 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 11464 transitions. Word has length 53 [2021-05-21 23:35:57,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:57,916 INFO L482 AbstractCegarLoop]: Abstraction has 3548 states and 11464 transitions. [2021-05-21 23:35:57,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 11464 transitions. [2021-05-21 23:35:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 23:35:57,922 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:57,923 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:57,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:35:57,925 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1678265394, now seen corresponding path program 1 times [2021-05-21 23:35:57,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:57,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024861339] [2021-05-21 23:35:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:58,036 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:58,036 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024861339] [2021-05-21 23:35:58,036 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024861339] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:58,036 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:58,036 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:58,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939738830] [2021-05-21 23:35:58,038 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:58,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:58,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:58,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:58,039 INFO L87 Difference]: Start difference. First operand 3548 states and 11464 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:58,204 INFO L93 Difference]: Finished difference Result 5066 states and 16148 transitions. [2021-05-21 23:35:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 23:35:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-05-21 23:35:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:58,218 INFO L225 Difference]: With dead ends: 5066 [2021-05-21 23:35:58,218 INFO L226 Difference]: Without dead ends: 4246 [2021-05-21 23:35:58,218 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:35:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2021-05-21 23:35:58,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3198. [2021-05-21 23:35:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 3197 states have (on average 3.1995620894588677) internal successors, (10229), 3197 states have internal predecessors, (10229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 10229 transitions. [2021-05-21 23:35:58,304 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 10229 transitions. Word has length 55 [2021-05-21 23:35:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:58,304 INFO L482 AbstractCegarLoop]: Abstraction has 3198 states and 10229 transitions. [2021-05-21 23:35:58,304 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 10229 transitions. [2021-05-21 23:35:58,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-21 23:35:58,309 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:58,309 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:58,309 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:35:58,309 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:58,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:58,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1442814938, now seen corresponding path program 1 times [2021-05-21 23:35:58,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:58,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659927369] [2021-05-21 23:35:58,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:58,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:58,363 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659927369] [2021-05-21 23:35:58,363 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659927369] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:58,363 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:58,363 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:58,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187657791] [2021-05-21 23:35:58,364 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:58,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:58,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:58,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:58,364 INFO L87 Difference]: Start difference. First operand 3198 states and 10229 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:58,465 INFO L93 Difference]: Finished difference Result 4278 states and 13595 transitions. [2021-05-21 23:35:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:35:58,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-05-21 23:35:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:58,470 INFO L225 Difference]: With dead ends: 4278 [2021-05-21 23:35:58,470 INFO L226 Difference]: Without dead ends: 2038 [2021-05-21 23:35:58,471 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 23:35:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2021-05-21 23:35:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 2038. [2021-05-21 23:35:58,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 3.1183112420225823) internal successors, (6352), 2037 states have internal predecessors, (6352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 6352 transitions. [2021-05-21 23:35:58,503 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 6352 transitions. Word has length 56 [2021-05-21 23:35:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:58,504 INFO L482 AbstractCegarLoop]: Abstraction has 2038 states and 6352 transitions. [2021-05-21 23:35:58,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 6352 transitions. [2021-05-21 23:35:58,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 23:35:58,506 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:58,506 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:58,507 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:35:58,507 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:58,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1506580816, now seen corresponding path program 1 times [2021-05-21 23:35:58,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:58,507 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193219463] [2021-05-21 23:35:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:58,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:58,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193219463] [2021-05-21 23:35:58,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193219463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:58,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:58,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:35:58,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841421127] [2021-05-21 23:35:58,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:35:58,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:58,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:35:58,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:35:58,557 INFO L87 Difference]: Start difference. First operand 2038 states and 6352 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:58,635 INFO L93 Difference]: Finished difference Result 2598 states and 8005 transitions. [2021-05-21 23:35:58,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:35:58,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-05-21 23:35:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:58,640 INFO L225 Difference]: With dead ends: 2598 [2021-05-21 23:35:58,640 INFO L226 Difference]: Without dead ends: 1886 [2021-05-21 23:35:58,640 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:58,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-05-21 23:35:58,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-05-21 23:35:58,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.0870026525198937) internal successors, (5819), 1885 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 5819 transitions. [2021-05-21 23:35:58,675 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 5819 transitions. Word has length 57 [2021-05-21 23:35:58,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:58,676 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 5819 transitions. [2021-05-21 23:35:58,676 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 5819 transitions. [2021-05-21 23:35:58,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-21 23:35:58,679 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:58,679 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:58,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 23:35:58,679 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:58,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -208209097, now seen corresponding path program 1 times [2021-05-21 23:35:58,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:58,679 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515168212] [2021-05-21 23:35:58,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:58,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:58,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515168212] [2021-05-21 23:35:58,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515168212] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:58,764 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:58,764 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:58,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917538357] [2021-05-21 23:35:58,764 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:58,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:58,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:58,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:58,765 INFO L87 Difference]: Start difference. First operand 1886 states and 5819 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:58,862 INFO L93 Difference]: Finished difference Result 2096 states and 6322 transitions. [2021-05-21 23:35:58,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:35:58,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-05-21 23:35:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:58,865 INFO L225 Difference]: With dead ends: 2096 [2021-05-21 23:35:58,865 INFO L226 Difference]: Without dead ends: 1496 [2021-05-21 23:35:58,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 81.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:35:58,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-05-21 23:35:58,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1496. [2021-05-21 23:35:58,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 2.985953177257525) internal successors, (4464), 1495 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 4464 transitions. [2021-05-21 23:35:58,890 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 4464 transitions. Word has length 58 [2021-05-21 23:35:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:58,890 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 4464 transitions. [2021-05-21 23:35:58,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:58,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 4464 transitions. [2021-05-21 23:35:58,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-21 23:35:58,892 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:58,892 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:58,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-05-21 23:35:58,893 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:58,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:58,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1710207794, now seen corresponding path program 1 times [2021-05-21 23:35:58,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:58,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139579447] [2021-05-21 23:35:58,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:58,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:58,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139579447] [2021-05-21 23:35:58,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139579447] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:58,975 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:58,975 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:35:58,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997074231] [2021-05-21 23:35:58,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:35:58,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:58,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:35:58,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:35:58,976 INFO L87 Difference]: Start difference. First operand 1496 states and 4464 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:59,080 INFO L93 Difference]: Finished difference Result 1325 states and 3840 transitions. [2021-05-21 23:35:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 23:35:59,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-05-21 23:35:59,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:59,082 INFO L225 Difference]: With dead ends: 1325 [2021-05-21 23:35:59,082 INFO L226 Difference]: Without dead ends: 693 [2021-05-21 23:35:59,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:35:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-05-21 23:35:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2021-05-21 23:35:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 2.7846820809248554) internal successors, (1927), 692 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1927 transitions. [2021-05-21 23:35:59,091 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1927 transitions. Word has length 59 [2021-05-21 23:35:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:59,091 INFO L482 AbstractCegarLoop]: Abstraction has 693 states and 1927 transitions. [2021-05-21 23:35:59,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1927 transitions. [2021-05-21 23:35:59,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-21 23:35:59,092 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:35:59,092 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:35:59,092 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-05-21 23:35:59,092 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:35:59,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:35:59,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1185234251, now seen corresponding path program 1 times [2021-05-21 23:35:59,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:35:59,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23240361] [2021-05-21 23:35:59,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:35:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:35:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:35:59,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:35:59,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23240361] [2021-05-21 23:35:59,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23240361] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:35:59,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:35:59,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:35:59,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868505260] [2021-05-21 23:35:59,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:35:59,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:35:59,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:35:59,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:35:59,174 INFO L87 Difference]: Start difference. First operand 693 states and 1927 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:35:59,219 INFO L93 Difference]: Finished difference Result 639 states and 1765 transitions. [2021-05-21 23:35:59,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-21 23:35:59,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-05-21 23:35:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:35:59,219 INFO L225 Difference]: With dead ends: 639 [2021-05-21 23:35:59,219 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:35:59,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:35:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:35:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:35:59,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:35:59,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-05-21 23:35:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:35:59,220 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:35:59,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:35:59,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:35:59,220 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-05-21 23:35:59,220 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:35:59,222 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:35:59,223 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:35:59,223 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:35:59,223 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:35:59,223 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:35:59,223 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:35:59,223 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:35:59,224 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:35:59,224 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:35:59,226 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:35:59,450 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:35:59,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:35:59,498 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:35:59,498 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:35:59,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:35:59 BasicIcfg [2021-05-21 23:35:59,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:35:59,501 INFO L168 Benchmark]: Toolchain (without parser) took 5590.90 ms. Allocated memory was 381.7 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 344.1 MB in the beginning and 1.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 338.3 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:59,501 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 381.7 MB. Free memory is still 362.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:35:59,501 INFO L168 Benchmark]: CACSL2BoogieTranslator took 414.68 ms. Allocated memory is still 381.7 MB. Free memory was 343.9 MB in the beginning and 343.5 MB in the end (delta: 429.2 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:59,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.88 ms. Allocated memory is still 381.7 MB. Free memory was 343.5 MB in the beginning and 341.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:59,501 INFO L168 Benchmark]: Boogie Preprocessor took 27.79 ms. Allocated memory is still 381.7 MB. Free memory was 341.4 MB in the beginning and 340.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:59,502 INFO L168 Benchmark]: RCFGBuilder took 393.17 ms. Allocated memory is still 381.7 MB. Free memory was 340.3 MB in the beginning and 314.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:59,502 INFO L168 Benchmark]: TraceAbstraction took 4702.80 ms. Allocated memory was 381.7 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 314.1 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 309.9 MB. Max. memory is 16.0 GB. [2021-05-21 23:35:59,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 381.7 MB. Free memory is still 362.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 414.68 ms. Allocated memory is still 381.7 MB. Free memory was 343.9 MB in the beginning and 343.5 MB in the end (delta: 429.2 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.88 ms. Allocated memory is still 381.7 MB. Free memory was 343.5 MB in the beginning and 341.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.79 ms. Allocated memory is still 381.7 MB. Free memory was 341.4 MB in the beginning and 340.3 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 393.17 ms. Allocated memory is still 381.7 MB. Free memory was 340.3 MB in the beginning and 314.1 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4702.80 ms. Allocated memory was 381.7 MB in the beginning and 2.1 GB in the end (delta: 1.7 GB). Free memory was 314.1 MB in the beginning and 1.7 GB in the end (delta: -1.4 GB). Peak memory consumption was 309.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4362.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 136.8ms, AutomataDifference: 1817.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 350.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1060 SDtfs, 1607 SDslu, 3528 SDs, 0 SdLazy, 465 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 279.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1061.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 865.2ms AutomataMinimizationTime, 10 MinimizatonAttempts, 4055 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.4ms SsaConstructionTime, 196.3ms SatisfiabilityAnalysisTime, 790.7ms InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 1952 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 274.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 48.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 226.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...