/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-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:35:18,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:35:18,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:35:18,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:35:18,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:35:18,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:35:18,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:35:18,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:35:18,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:35:18,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:35:18,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:35:18,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:35:18,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:35:18,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:35:18,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:35:18,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:35:18,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:35:18,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:35:18,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:35:18,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:35:18,150 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-PN-NoLbe.epf [2021-03-11 02:35:18,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:35:18,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:35:18,165 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:35:18,165 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:35:18,165 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:35:18,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:35:18,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:35:18,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:35:18,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:35:18,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:35:18,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:35:18,168 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:35:18,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:35:18,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:35:18,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:35:18,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:35:18,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:35:18,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:35:18,417 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:35:18,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2021-03-11 02:35:18,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183d0946d/3d6b3f8fe8e34e32809a42cc09907af6/FLAGac4976628 [2021-03-11 02:35:18,945 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:35:18,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i [2021-03-11 02:35:18,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183d0946d/3d6b3f8fe8e34e32809a42cc09907af6/FLAGac4976628 [2021-03-11 02:35:19,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/183d0946d/3d6b3f8fe8e34e32809a42cc09907af6 [2021-03-11 02:35:19,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:35:19,447 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:35:19,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:35:19,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:35:19,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:35:19,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe99163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19, skipping insertion in model container [2021-03-11 02:35:19,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:35:19,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:35:19,602 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i[950,963] [2021-03-11 02:35:19,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:35:19,747 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:35:19,755 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.oepc.i[950,963] [2021-03-11 02:35:19,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:35:19,837 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:35:19,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19 WrapperNode [2021-03-11 02:35:19,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:35:19,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:35:19,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:35:19,842 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:35:19,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:35:19,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:35:19,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:35:19,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:35:19,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (1/1) ... [2021-03-11 02:35:19,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:35:19,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:35:19,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:35:19,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:35:19,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (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 [2021-03-11 02:35:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:35:19,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:35:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:35:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:35:19,972 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:35:19,972 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:35:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:35:19,973 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:35:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:35:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:35:19,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:35:19,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:35:19,974 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:35:20,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:35:20,177 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:35:20,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:20 BoogieIcfgContainer [2021-03-11 02:35:20,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:35:20,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:35:20,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:35:20,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:35:20,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:35:19" (1/3) ... [2021-03-11 02:35:20,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216c5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:35:20, skipping insertion in model container [2021-03-11 02:35:20,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:35:19" (2/3) ... [2021-03-11 02:35:20,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216c5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:35:20, skipping insertion in model container [2021-03-11 02:35:20,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:35:20" (3/3) ... [2021-03-11 02:35:20,184 INFO L111 eAbstractionObserver]: Analyzing ICFG safe022_tso.oepc.i [2021-03-11 02:35:20,187 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:35:20,190 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:35:20,191 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:35:20,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,213 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,213 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,214 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,214 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,215 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,216 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,216 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,217 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,221 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,221 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:35:20,222 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:35:20,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 02:35:20,246 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:35:20,246 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:35:20,246 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:35:20,246 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:35:20,247 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:35:20,247 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:35:20,247 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:35:20,247 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:35:20,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 02:35:20,273 INFO L129 PetriNetUnfolder]: 2/59 cut-off events. [2021-03-11 02:35:20,274 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:20,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 59 events. 2/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2021-03-11 02:35:20,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 132 flow [2021-03-11 02:35:20,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 49 transitions, 104 flow [2021-03-11 02:35:20,298 INFO L129 PetriNetUnfolder]: 1/48 cut-off events. [2021-03-11 02:35:20,298 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:20,299 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:20,299 INFO L255 CegarLoopForPetriNet]: 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] [2021-03-11 02:35:20,299 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:20,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:20,303 INFO L82 PathProgramCache]: Analyzing trace with hash -894398438, now seen corresponding path program 1 times [2021-03-11 02:35:20,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:20,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214847204] [2021-03-11 02:35:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:20,462 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:20,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:20,475 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-03-11 02:35:20,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:20,484 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:20,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:20,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:20,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:20,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:20,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214847204] [2021-03-11 02:35:20,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:20,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:20,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378876772] [2021-03-11 02:35:20,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:20,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:20,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:20,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:20,535 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:35:20,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 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) [2021-03-11 02:35:20,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:20,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:35:20,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:20,645 INFO L129 PetriNetUnfolder]: 11/83 cut-off events. [2021-03-11 02:35:20,645 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:35:20,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 83 events. 11/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 5 based on Foata normal form. 5/86 useless extension candidates. Maximal degree in co-relation 101. Up to 18 conditions per place. [2021-03-11 02:35:20,648 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 8 selfloop transitions, 2 changer transitions 14/61 dead transitions. [2021-03-11 02:35:20,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 174 flow [2021-03-11 02:35:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:35:20,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:35:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 450 transitions. [2021-03-11 02:35:20,662 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.819672131147541 [2021-03-11 02:35:20,663 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 450 transitions. [2021-03-11 02:35:20,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 450 transitions. [2021-03-11 02:35:20,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:20,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 450 transitions. [2021-03-11 02:35:20,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 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) [2021-03-11 02:35:20,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:20,681 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:20,682 INFO L185 Difference]: Start difference. First operand has 55 places, 49 transitions, 104 flow. Second operand 9 states and 450 transitions. [2021-03-11 02:35:20,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 174 flow [2021-03-11 02:35:20,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 02:35:20,693 INFO L241 Difference]: Finished difference. Result has 68 places, 47 transitions, 118 flow [2021-03-11 02:35:20,695 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=118, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2021-03-11 02:35:20,696 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2021-03-11 02:35:20,696 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 118 flow [2021-03-11 02:35:20,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.142857142857146) internal successors, (337), 7 states have internal predecessors, (337), 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) [2021-03-11 02:35:20,696 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:20,696 INFO L255 CegarLoopForPetriNet]: 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] [2021-03-11 02:35:20,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:35:20,697 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:20,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1322774107, now seen corresponding path program 1 times [2021-03-11 02:35:20,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:20,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011125950] [2021-03-11 02:35:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:20,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,787 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:20,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:20,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:20,797 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:20,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:20,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:20,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:20,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:20,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:20,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011125950] [2021-03-11 02:35:20,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:20,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:20,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269258712] [2021-03-11 02:35:20,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:20,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:20,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:20,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:20,842 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:35:20,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 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) [2021-03-11 02:35:20,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:20,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:35:20,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:20,968 INFO L129 PetriNetUnfolder]: 4/68 cut-off events. [2021-03-11 02:35:20,968 INFO L130 PetriNetUnfolder]: For 17/24 co-relation queries the response was YES. [2021-03-11 02:35:20,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 68 events. 4/68 cut-off events. For 17/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 2/70 useless extension candidates. Maximal degree in co-relation 113. Up to 7 conditions per place. [2021-03-11 02:35:20,968 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 6 selfloop transitions, 4 changer transitions 12/59 dead transitions. [2021-03-11 02:35:20,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 209 flow [2021-03-11 02:35:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:35:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:35:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 494 transitions. [2021-03-11 02:35:20,970 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8098360655737705 [2021-03-11 02:35:20,970 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 494 transitions. [2021-03-11 02:35:20,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 494 transitions. [2021-03-11 02:35:20,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:20,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 494 transitions. [2021-03-11 02:35:20,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 49.4) internal successors, (494), 10 states have internal predecessors, (494), 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) [2021-03-11 02:35:20,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:20,973 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:20,973 INFO L185 Difference]: Start difference. First operand has 68 places, 47 transitions, 118 flow. Second operand 10 states and 494 transitions. [2021-03-11 02:35:20,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 209 flow [2021-03-11 02:35:20,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 175 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-03-11 02:35:20,975 INFO L241 Difference]: Finished difference. Result has 70 places, 47 transitions, 132 flow [2021-03-11 02:35:20,975 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=132, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2021-03-11 02:35:20,976 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 15 predicate places. [2021-03-11 02:35:20,976 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 132 flow [2021-03-11 02:35:20,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.285714285714285) internal successors, (338), 7 states have internal predecessors, (338), 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) [2021-03-11 02:35:20,976 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:20,976 INFO L255 CegarLoopForPetriNet]: 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] [2021-03-11 02:35:20,976 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:35:20,976 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:20,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:20,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1004606386, now seen corresponding path program 1 times [2021-03-11 02:35:20,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:20,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416049606] [2021-03-11 02:35:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:21,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:21,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:21,021 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:35:21,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:35:21,034 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,038 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:35:21,048 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:35:21,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:21,057 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:21,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416049606] [2021-03-11 02:35:21,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:21,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:35:21,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393805480] [2021-03-11 02:35:21,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:35:21,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:21,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:35:21,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:35:21,060 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 61 [2021-03-11 02:35:21,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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) [2021-03-11 02:35:21,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:21,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 61 [2021-03-11 02:35:21,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:21,159 INFO L129 PetriNetUnfolder]: 24/124 cut-off events. [2021-03-11 02:35:21,159 INFO L130 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2021-03-11 02:35:21,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 124 events. 24/124 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 401 event pairs, 0 based on Foata normal form. 4/125 useless extension candidates. Maximal degree in co-relation 211. Up to 26 conditions per place. [2021-03-11 02:35:21,160 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 8 selfloop transitions, 5 changer transitions 15/66 dead transitions. [2021-03-11 02:35:21,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 226 flow [2021-03-11 02:35:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:35:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:35:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 462 transitions. [2021-03-11 02:35:21,162 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8415300546448088 [2021-03-11 02:35:21,162 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 462 transitions. [2021-03-11 02:35:21,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 462 transitions. [2021-03-11 02:35:21,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:21,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 462 transitions. [2021-03-11 02:35:21,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 51.333333333333336) internal successors, (462), 9 states have internal predecessors, (462), 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) [2021-03-11 02:35:21,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:21,164 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 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) [2021-03-11 02:35:21,164 INFO L185 Difference]: Start difference. First operand has 70 places, 47 transitions, 132 flow. Second operand 9 states and 462 transitions. [2021-03-11 02:35:21,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 226 flow [2021-03-11 02:35:21,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 200 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-03-11 02:35:21,166 INFO L241 Difference]: Finished difference. Result has 68 places, 49 transitions, 150 flow [2021-03-11 02:35:21,166 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2021-03-11 02:35:21,166 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2021-03-11 02:35:21,166 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 150 flow [2021-03-11 02:35:21,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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) [2021-03-11 02:35:21,166 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:21,166 INFO L255 CegarLoopForPetriNet]: 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] [2021-03-11 02:35:21,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:35:21,167 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:21,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:21,167 INFO L82 PathProgramCache]: Analyzing trace with hash -182144863, now seen corresponding path program 1 times [2021-03-11 02:35:21,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:21,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210771624] [2021-03-11 02:35:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:21,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,193 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:21,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,194 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:21,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,197 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:21,200 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:35:21,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:35:21,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:35:21,222 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:35:21,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:21,229 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,229 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:21,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210771624] [2021-03-11 02:35:21,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:21,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:21,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524985490] [2021-03-11 02:35:21,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:21,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:21,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:21,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:21,233 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 61 [2021-03-11 02:35:21,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 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) [2021-03-11 02:35:21,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:21,234 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 61 [2021-03-11 02:35:21,234 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:21,328 INFO L129 PetriNetUnfolder]: 8/76 cut-off events. [2021-03-11 02:35:21,328 INFO L130 PetriNetUnfolder]: For 67/74 co-relation queries the response was YES. [2021-03-11 02:35:21,328 INFO L84 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 76 events. 8/76 cut-off events. For 67/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 141 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 163. Up to 17 conditions per place. [2021-03-11 02:35:21,329 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 4 selfloop transitions, 7 changer transitions 11/60 dead transitions. [2021-03-11 02:35:21,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 60 transitions, 259 flow [2021-03-11 02:35:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:35:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:35:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 504 transitions. [2021-03-11 02:35:21,331 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8262295081967214 [2021-03-11 02:35:21,331 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 504 transitions. [2021-03-11 02:35:21,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 504 transitions. [2021-03-11 02:35:21,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:21,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 504 transitions. [2021-03-11 02:35:21,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 50.4) internal successors, (504), 10 states have internal predecessors, (504), 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) [2021-03-11 02:35:21,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:21,333 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 61.0) internal successors, (671), 11 states have internal predecessors, (671), 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) [2021-03-11 02:35:21,333 INFO L185 Difference]: Start difference. First operand has 68 places, 49 transitions, 150 flow. Second operand 10 states and 504 transitions. [2021-03-11 02:35:21,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 60 transitions, 259 flow [2021-03-11 02:35:21,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 220 flow, removed 14 selfloop flow, removed 6 redundant places. [2021-03-11 02:35:21,336 INFO L241 Difference]: Finished difference. Result has 73 places, 49 transitions, 162 flow [2021-03-11 02:35:21,336 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=73, PETRI_TRANSITIONS=49} [2021-03-11 02:35:21,336 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2021-03-11 02:35:21,336 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 49 transitions, 162 flow [2021-03-11 02:35:21,336 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 49.142857142857146) internal successors, (344), 7 states have internal predecessors, (344), 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) [2021-03-11 02:35:21,336 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:35:21,336 INFO L255 CegarLoopForPetriNet]: 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] [2021-03-11 02:35:21,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:35:21,336 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:35:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:35:21,337 INFO L82 PathProgramCache]: Analyzing trace with hash -222690148, now seen corresponding path program 1 times [2021-03-11 02:35:21,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:35:21,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564148125] [2021-03-11 02:35:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:35:21,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:35:21,393 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:21,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,394 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:21,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:35:21,399 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:35:21,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:35:21,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:21,420 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,420 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:35:21,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:35:21,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:35:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:35:21,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564148125] [2021-03-11 02:35:21,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:35:21,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:35:21,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031857357] [2021-03-11 02:35:21,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:35:21,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:35:21,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:35:21,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:35:21,433 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 61 [2021-03-11 02:35:21,433 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 49 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 states have internal predecessors, (339), 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) [2021-03-11 02:35:21,433 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:35:21,433 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 61 [2021-03-11 02:35:21,433 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:35:21,480 INFO L129 PetriNetUnfolder]: 1/49 cut-off events. [2021-03-11 02:35:21,481 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-11 02:35:21,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 49 events. 1/49 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 80. Up to 6 conditions per place. [2021-03-11 02:35:21,482 INFO L132 encePairwiseOnDemand]: 55/61 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2021-03-11 02:35:21,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 47 transitions, 176 flow [2021-03-11 02:35:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 02:35:21,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 02:35:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 339 transitions. [2021-03-11 02:35:21,483 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7939110070257611 [2021-03-11 02:35:21,483 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 339 transitions. [2021-03-11 02:35:21,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 339 transitions. [2021-03-11 02:35:21,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:35:21,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 339 transitions. [2021-03-11 02:35:21,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 states have internal predecessors, (339), 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) [2021-03-11 02:35:21,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2021-03-11 02:35:21,485 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 61.0) internal successors, (488), 8 states have internal predecessors, (488), 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) [2021-03-11 02:35:21,485 INFO L185 Difference]: Start difference. First operand has 73 places, 49 transitions, 162 flow. Second operand 7 states and 339 transitions. [2021-03-11 02:35:21,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 47 transitions, 176 flow [2021-03-11 02:35:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 130 flow, removed 13 selfloop flow, removed 13 redundant places. [2021-03-11 02:35:21,486 INFO L241 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2021-03-11 02:35:21,486 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2021-03-11 02:35:21,486 INFO L335 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2021-03-11 02:35:21,486 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2021-03-11 02:35:21,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 48.42857142857143) internal successors, (339), 7 states have internal predecessors, (339), 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) [2021-03-11 02:35:21,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:35:21,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:35:21 BasicIcfg [2021-03-11 02:35:21,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:35:21,491 INFO L168 Benchmark]: Toolchain (without parser) took 2047.46 ms. Allocated memory is still 360.7 MB. Free memory was 323.8 MB in the beginning and 262.3 MB in the end (delta: 61.5 MB). Peak memory consumption was 63.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:21,491 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 360.7 MB. Free memory is still 341.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:35:21,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.29 ms. Allocated memory is still 360.7 MB. Free memory was 323.2 MB in the beginning and 322.3 MB in the end (delta: 882.5 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:21,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.40 ms. Allocated memory is still 360.7 MB. Free memory was 322.3 MB in the beginning and 320.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:21,492 INFO L168 Benchmark]: Boogie Preprocessor took 26.16 ms. Allocated memory is still 360.7 MB. Free memory was 320.7 MB in the beginning and 319.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:21,494 INFO L168 Benchmark]: RCFGBuilder took 269.73 ms. Allocated memory is still 360.7 MB. Free memory was 319.1 MB in the beginning and 297.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:21,494 INFO L168 Benchmark]: TraceAbstraction took 1310.56 ms. Allocated memory is still 360.7 MB. Free memory was 297.1 MB in the beginning and 262.3 MB in the end (delta: 34.8 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.0 GB. [2021-03-11 02:35:21,499 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 360.7 MB. Free memory is still 341.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 393.29 ms. Allocated memory is still 360.7 MB. Free memory was 323.2 MB in the beginning and 322.3 MB in the end (delta: 882.5 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.40 ms. Allocated memory is still 360.7 MB. Free memory was 322.3 MB in the beginning and 320.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.16 ms. Allocated memory is still 360.7 MB. Free memory was 320.7 MB in the beginning and 319.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 269.73 ms. Allocated memory is still 360.7 MB. Free memory was 319.1 MB in the beginning and 297.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1310.56 ms. Allocated memory is still 360.7 MB. Free memory was 297.1 MB in the beginning and 262.3 MB in the end (delta: 34.8 MB). Peak memory consumption was 36.9 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1244.0ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 566.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 31.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 87 SDslu, 125 SDs, 0 SdLazy, 159 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 402.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=4, InterpolantAutomatonStates: 45, 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: TRACE_CHECK: 13.0ms SsaConstructionTime, 91.1ms SatisfiabilityAnalysisTime, 416.5ms InterpolantComputationTime, 196 NumberOfCodeBlocks, 196 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 651 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...