/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:27:52,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:27:52,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:27:52,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:27:52,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:27:52,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:27:52,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:27:52,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:27:52,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:27:52,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:27:52,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:27:52,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:27:52,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:27:52,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:27:52,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:27:52,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:27:52,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:27:52,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:27:52,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:27:52,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:27:52,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:27:52,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:27:52,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:27:52,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:27:52,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:27:52,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:27:52,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:27:52,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:27:52,184 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-SemanticLbe.epf [2021-03-11 20:27:52,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:27:52,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:27:52,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:27:52,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:27:52,221 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:27:52,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:27:52,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:27:52,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:27:52,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:27:52,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:27:52,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:27:52,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:27:52,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:27:52,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:27:52,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:27:52,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:27:52,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:27:52,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:27:52,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:27:52,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:27:52,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:27:52,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:27:52,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:27:52,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:27:52,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:27:52,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:27:52,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:27:52,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:27:52,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:27:52,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:27:52,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:27:52,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:27:52,571 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:27:52,572 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:27:52,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-11 20:27:52,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b51c27cf/280718903a8b41e4998ceb4afb7b2bb0/FLAG7a479906a [2021-03-11 20:27:53,206 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:27:53,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-03-11 20:27:53,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b51c27cf/280718903a8b41e4998ceb4afb7b2bb0/FLAG7a479906a [2021-03-11 20:27:53,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b51c27cf/280718903a8b41e4998ceb4afb7b2bb0 [2021-03-11 20:27:53,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:27:53,665 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:27:53,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:27:53,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:27:53,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:27:53,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:27:53" (1/1) ... [2021-03-11 20:27:53,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9b0612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:53, skipping insertion in model container [2021-03-11 20:27:53,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:27:53" (1/1) ... [2021-03-11 20:27:53,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:27:53,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:27:53,857 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/safe026_tso.oepc.i[950,963] [2021-03-11 20:27:53,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:27:54,002 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:27:54,013 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/safe026_tso.oepc.i[950,963] [2021-03-11 20:27:54,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:27:54,118 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:27:54,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54 WrapperNode [2021-03-11 20:27:54,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:27:54,120 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:27:54,120 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:27:54,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:27:54,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:27:54,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:27:54,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:27:54,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:27:54,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (1/1) ... [2021-03-11 20:27:54,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:27:54,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:27:54,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:27:54,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:27:54,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (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 [2021-03-11 20:27:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:27:54,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:27:54,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:27:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:27:54,283 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:27:54,283 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:27:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:27:54,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:27:54,284 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:27:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:27:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:27:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:27:54,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:27:54,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:27:54,286 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 20:27:54,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:27:54,687 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:27:54,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:27:54 BoogieIcfgContainer [2021-03-11 20:27:54,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:27:54,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:27:54,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:27:54,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:27:54,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:27:53" (1/3) ... [2021-03-11 20:27:54,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec403ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:27:54, skipping insertion in model container [2021-03-11 20:27:54,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:27:54" (2/3) ... [2021-03-11 20:27:54,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec403ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:27:54, skipping insertion in model container [2021-03-11 20:27:54,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:27:54" (3/3) ... [2021-03-11 20:27:54,699 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-03-11 20:27:54,703 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:27:54,706 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:27:54,706 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:27:54,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,727 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,727 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,728 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,728 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,728 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,729 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,730 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,730 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,730 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,731 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,731 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,732 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,732 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,732 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,732 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,733 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,735 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,735 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,739 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,739 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,740 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,741 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,741 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,742 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:27:54,743 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:27:54,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:27:54,775 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:27:54,775 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:27:54,775 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:27:54,776 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:27:54,776 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:27:54,776 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:27:54,776 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:27:54,776 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:27:54,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 20:27:54,813 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 20:27:54,814 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:54,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2021-03-11 20:27:54,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 20:27:54,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:54,823 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:27:54,831 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:54,833 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:54,833 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 58 transitions, 125 flow [2021-03-11 20:27:54,863 INFO L129 PetriNetUnfolder]: 1/58 cut-off events. [2021-03-11 20:27:54,863 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:54,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 1/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2021-03-11 20:27:54,866 INFO L116 LiptonReduction]: Number of co-enabled transitions 804 [2021-03-11 20:27:56,904 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:27:57,150 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 20:27:57,240 INFO L131 LiptonReduction]: Checked pairs total: 1527 [2021-03-11 20:27:57,240 INFO L133 LiptonReduction]: Total number of compositions: 46 [2021-03-11 20:27:57,241 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2421 [2021-03-11 20:27:57,254 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:27:57,255 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:57,255 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:57,256 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:57,256 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:57,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:57,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1620917175, now seen corresponding path program 1 times [2021-03-11 20:27:57,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:57,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876448036] [2021-03-11 20:27:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:57,460 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 20:27:57,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:27:57,476 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 20:27:57,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876448036] [2021-03-11 20:27:57,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:57,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:27:57,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545953099] [2021-03-11 20:27:57,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:27:57,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:57,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:27:57,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:27:57,502 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 119 [2021-03-11 20:27:57,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 20:27:57,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:57,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 119 [2021-03-11 20:27:57,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:57,554 INFO L129 PetriNetUnfolder]: 24/84 cut-off events. [2021-03-11 20:27:57,559 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:27:57,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 84 events. 24/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 321 event pairs, 6 based on Foata normal form. 21/102 useless extension candidates. Maximal degree in co-relation 141. Up to 45 conditions per place. [2021-03-11 20:27:57,563 INFO L132 encePairwiseOnDemand]: 112/119 looper letters, 5 selfloop transitions, 5 changer transitions 0/20 dead transitions. [2021-03-11 20:27:57,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 20 transitions, 69 flow [2021-03-11 20:27:57,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:27:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:27:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2021-03-11 20:27:57,581 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7927170868347339 [2021-03-11 20:27:57,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2021-03-11 20:27:57,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2021-03-11 20:27:57,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:57,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2021-03-11 20:27:57,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 20:27:57,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 20:27:57,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 20:27:57,599 INFO L185 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 283 transitions. [2021-03-11 20:27:57,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 20 transitions, 69 flow [2021-03-11 20:27:57,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 66 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:27:57,602 INFO L241 Difference]: Finished difference. Result has 27 places, 20 transitions, 76 flow [2021-03-11 20:27:57,604 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2021-03-11 20:27:57,604 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2021-03-11 20:27:57,604 INFO L480 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 76 flow [2021-03-11 20:27:57,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 20:27:57,605 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:57,605 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:57,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:27:57,605 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:57,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:57,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1300535176, now seen corresponding path program 1 times [2021-03-11 20:27:57,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:57,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877711124] [2021-03-11 20:27:57,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:57,667 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:57,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:57,671 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 20:27:57,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877711124] [2021-03-11 20:27:57,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:57,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:27:57,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108893607] [2021-03-11 20:27:57,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:27:57,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:57,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:27:57,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:27:57,674 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 119 [2021-03-11 20:27:57,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 20:27:57,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:57,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 119 [2021-03-11 20:27:57,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:57,701 INFO L129 PetriNetUnfolder]: 21/77 cut-off events. [2021-03-11 20:27:57,701 INFO L130 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2021-03-11 20:27:57,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 21/77 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 275 event pairs, 4 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 163. Up to 40 conditions per place. [2021-03-11 20:27:57,702 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 1 selfloop transitions, 3 changer transitions 0/20 dead transitions. [2021-03-11 20:27:57,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 20 transitions, 84 flow [2021-03-11 20:27:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:27:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:27:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2021-03-11 20:27:57,705 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8515406162464986 [2021-03-11 20:27:57,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2021-03-11 20:27:57,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2021-03-11 20:27:57,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:57,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2021-03-11 20:27:57,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 20:27:57,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 20:27:57,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 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 20:27:57,710 INFO L185 Difference]: Start difference. First operand has 27 places, 20 transitions, 76 flow. Second operand 3 states and 304 transitions. [2021-03-11 20:27:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 20 transitions, 84 flow [2021-03-11 20:27:57,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 20 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:27:57,712 INFO L241 Difference]: Finished difference. Result has 28 places, 20 transitions, 77 flow [2021-03-11 20:27:57,712 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2021-03-11 20:27:57,713 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2021-03-11 20:27:57,713 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 77 flow [2021-03-11 20:27:57,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 20:27:57,713 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:57,713 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:57,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:27:57,713 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:57,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:57,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1291176152, now seen corresponding path program 1 times [2021-03-11 20:27:57,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:57,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551220853] [2021-03-11 20:27:57,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:57,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:57,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:57,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:57,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:57,812 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 20:27:57,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551220853] [2021-03-11 20:27:57,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:57,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:27:57,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412017622] [2021-03-11 20:27:57,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:27:57,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:27:57,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:27:57,816 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 119 [2021-03-11 20:27:57,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 20:27:57,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:57,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 119 [2021-03-11 20:27:57,817 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:57,860 INFO L129 PetriNetUnfolder]: 14/74 cut-off events. [2021-03-11 20:27:57,861 INFO L130 PetriNetUnfolder]: For 41/49 co-relation queries the response was YES. [2021-03-11 20:27:57,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 74 events. 14/74 cut-off events. For 41/49 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 305 event pairs, 5 based on Foata normal form. 8/82 useless extension candidates. Maximal degree in co-relation 169. Up to 36 conditions per place. [2021-03-11 20:27:57,862 INFO L132 encePairwiseOnDemand]: 114/119 looper letters, 5 selfloop transitions, 5 changer transitions 4/26 dead transitions. [2021-03-11 20:27:57,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 26 transitions, 132 flow [2021-03-11 20:27:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:27:57,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:27:57,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 384 transitions. [2021-03-11 20:27:57,864 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8067226890756303 [2021-03-11 20:27:57,864 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 384 transitions. [2021-03-11 20:27:57,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 384 transitions. [2021-03-11 20:27:57,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:57,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 384 transitions. [2021-03-11 20:27:57,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 20:27:57,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 20:27:57,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 20:27:57,867 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 77 flow. Second operand 4 states and 384 transitions. [2021-03-11 20:27:57,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 26 transitions, 132 flow [2021-03-11 20:27:57,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:27:57,869 INFO L241 Difference]: Finished difference. Result has 31 places, 21 transitions, 102 flow [2021-03-11 20:27:57,870 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2021-03-11 20:27:57,871 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 5 predicate places. [2021-03-11 20:27:57,873 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 102 flow [2021-03-11 20:27:57,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 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 20:27:57,874 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:57,874 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:57,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:27:57,875 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:57,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1661919297, now seen corresponding path program 1 times [2021-03-11 20:27:57,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:57,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964533425] [2021-03-11 20:27:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:57,927 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:57,927 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:57,930 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:57,931 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:57,934 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 20:27:57,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964533425] [2021-03-11 20:27:57,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:57,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:27:57,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751516521] [2021-03-11 20:27:57,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:27:57,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:57,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:27:57,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:27:57,937 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-11 20:27:57,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 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 20:27:57,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:57,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-11 20:27:57,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:58,003 INFO L129 PetriNetUnfolder]: 81/187 cut-off events. [2021-03-11 20:27:58,004 INFO L130 PetriNetUnfolder]: For 427/505 co-relation queries the response was YES. [2021-03-11 20:27:58,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 187 events. 81/187 cut-off events. For 427/505 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 934 event pairs, 31 based on Foata normal form. 29/202 useless extension candidates. Maximal degree in co-relation 471. Up to 117 conditions per place. [2021-03-11 20:27:58,011 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 8 selfloop transitions, 8 changer transitions 0/31 dead transitions. [2021-03-11 20:27:58,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 154 flow [2021-03-11 20:27:58,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:27:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:27:58,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 438 transitions. [2021-03-11 20:27:58,014 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7361344537815127 [2021-03-11 20:27:58,014 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 438 transitions. [2021-03-11 20:27:58,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 438 transitions. [2021-03-11 20:27:58,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:58,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 438 transitions. [2021-03-11 20:27:58,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 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 20:27:58,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 20:27:58,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 119.0) internal successors, (714), 6 states have internal predecessors, (714), 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 20:27:58,017 INFO L185 Difference]: Start difference. First operand has 31 places, 21 transitions, 102 flow. Second operand 5 states and 438 transitions. [2021-03-11 20:27:58,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 154 flow [2021-03-11 20:27:58,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 137 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-11 20:27:58,022 INFO L241 Difference]: Finished difference. Result has 36 places, 28 transitions, 145 flow [2021-03-11 20:27:58,022 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2021-03-11 20:27:58,022 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2021-03-11 20:27:58,022 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 145 flow [2021-03-11 20:27:58,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 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 20:27:58,023 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:58,023 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:58,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:27:58,023 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:58,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:58,023 INFO L82 PathProgramCache]: Analyzing trace with hash 406793198, now seen corresponding path program 1 times [2021-03-11 20:27:58,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:58,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329156258] [2021-03-11 20:27:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:58,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,113 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 20:27:58,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329156258] [2021-03-11 20:27:58,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:58,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:27:58,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857461544] [2021-03-11 20:27:58,114 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:27:58,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:58,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:27:58,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:27:58,116 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-11 20:27:58,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 20:27:58,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:58,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-11 20:27:58,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:58,190 INFO L129 PetriNetUnfolder]: 54/154 cut-off events. [2021-03-11 20:27:58,190 INFO L130 PetriNetUnfolder]: For 343/574 co-relation queries the response was YES. [2021-03-11 20:27:58,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 154 events. 54/154 cut-off events. For 343/574 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 817 event pairs, 4 based on Foata normal form. 84/228 useless extension candidates. Maximal degree in co-relation 561. Up to 113 conditions per place. [2021-03-11 20:27:58,192 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 5 selfloop transitions, 15 changer transitions 3/38 dead transitions. [2021-03-11 20:27:58,192 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 249 flow [2021-03-11 20:27:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:27:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:27:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 613 transitions. [2021-03-11 20:27:58,195 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7358943577430972 [2021-03-11 20:27:58,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 613 transitions. [2021-03-11 20:27:58,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 613 transitions. [2021-03-11 20:27:58,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:58,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 613 transitions. [2021-03-11 20:27:58,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.57142857142857) internal successors, (613), 7 states have internal predecessors, (613), 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 20:27:58,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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 20:27:58,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 119.0) internal successors, (952), 8 states have internal predecessors, (952), 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 20:27:58,201 INFO L185 Difference]: Start difference. First operand has 36 places, 28 transitions, 145 flow. Second operand 7 states and 613 transitions. [2021-03-11 20:27:58,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 249 flow [2021-03-11 20:27:58,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:27:58,208 INFO L241 Difference]: Finished difference. Result has 44 places, 35 transitions, 240 flow [2021-03-11 20:27:58,208 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2021-03-11 20:27:58,208 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 18 predicate places. [2021-03-11 20:27:58,208 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 240 flow [2021-03-11 20:27:58,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 20:27:58,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:58,209 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:58,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:27:58,209 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:58,210 INFO L82 PathProgramCache]: Analyzing trace with hash 49118824, now seen corresponding path program 1 times [2021-03-11 20:27:58,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:58,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093191863] [2021-03-11 20:27:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:58,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,289 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 20:27:58,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093191863] [2021-03-11 20:27:58,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:58,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:27:58,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183536492] [2021-03-11 20:27:58,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:27:58,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:58,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:27:58,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:27:58,292 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 119 [2021-03-11 20:27:58,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 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 20:27:58,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:58,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 119 [2021-03-11 20:27:58,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:58,379 INFO L129 PetriNetUnfolder]: 39/129 cut-off events. [2021-03-11 20:27:58,379 INFO L130 PetriNetUnfolder]: For 717/1103 co-relation queries the response was YES. [2021-03-11 20:27:58,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 637 conditions, 129 events. 39/129 cut-off events. For 717/1103 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 685 event pairs, 0 based on Foata normal form. 106/223 useless extension candidates. Maximal degree in co-relation 616. Up to 97 conditions per place. [2021-03-11 20:27:58,381 INFO L132 encePairwiseOnDemand]: 113/119 looper letters, 2 selfloop transitions, 19 changer transitions 3/39 dead transitions. [2021-03-11 20:27:58,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 318 flow [2021-03-11 20:27:58,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:27:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:27:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 782 transitions. [2021-03-11 20:27:58,384 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2021-03-11 20:27:58,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 782 transitions. [2021-03-11 20:27:58,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 782 transitions. [2021-03-11 20:27:58,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:58,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 782 transitions. [2021-03-11 20:27:58,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.88888888888889) internal successors, (782), 9 states have internal predecessors, (782), 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 20:27:58,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 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 20:27:58,391 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 119.0) internal successors, (1190), 10 states have internal predecessors, (1190), 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 20:27:58,391 INFO L185 Difference]: Start difference. First operand has 44 places, 35 transitions, 240 flow. Second operand 9 states and 782 transitions. [2021-03-11 20:27:58,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 318 flow [2021-03-11 20:27:58,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 39 transitions, 283 flow, removed 13 selfloop flow, removed 2 redundant places. [2021-03-11 20:27:58,397 INFO L241 Difference]: Finished difference. Result has 53 places, 36 transitions, 266 flow [2021-03-11 20:27:58,397 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2021-03-11 20:27:58,397 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 27 predicate places. [2021-03-11 20:27:58,397 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 266 flow [2021-03-11 20:27:58,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 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 20:27:58,398 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:27:58,398 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:27:58,398 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:27:58,398 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:27:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:27:58,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1435798364, now seen corresponding path program 1 times [2021-03-11 20:27:58,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:27:58,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433467143] [2021-03-11 20:27:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:27:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:27:58,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:27:58,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:27:58,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:27:58,453 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 20:27:58,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433467143] [2021-03-11 20:27:58,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:27:58,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:27:58,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034920754] [2021-03-11 20:27:58,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:27:58,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:27:58,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:27:58,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:27:58,456 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 119 [2021-03-11 20:27:58,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 36 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 20:27:58,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:27:58,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 119 [2021-03-11 20:27:58,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:27:58,480 INFO L129 PetriNetUnfolder]: 46/156 cut-off events. [2021-03-11 20:27:58,480 INFO L130 PetriNetUnfolder]: For 704/773 co-relation queries the response was YES. [2021-03-11 20:27:58,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 647 conditions, 156 events. 46/156 cut-off events. For 704/773 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 922 event pairs, 0 based on Foata normal form. 11/153 useless extension candidates. Maximal degree in co-relation 631. Up to 60 conditions per place. [2021-03-11 20:27:58,481 INFO L132 encePairwiseOnDemand]: 116/119 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2021-03-11 20:27:58,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 36 transitions, 262 flow [2021-03-11 20:27:58,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:27:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:27:58,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 385 transitions. [2021-03-11 20:27:58,482 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8088235294117647 [2021-03-11 20:27:58,482 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 385 transitions. [2021-03-11 20:27:58,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 385 transitions. [2021-03-11 20:27:58,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:27:58,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 385 transitions. [2021-03-11 20:27:58,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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 20:27:58,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 20:27:58,485 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 119.0) internal successors, (595), 5 states have internal predecessors, (595), 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 20:27:58,485 INFO L185 Difference]: Start difference. First operand has 53 places, 36 transitions, 266 flow. Second operand 4 states and 385 transitions. [2021-03-11 20:27:58,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 36 transitions, 262 flow [2021-03-11 20:27:58,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 185 flow, removed 11 selfloop flow, removed 12 redundant places. [2021-03-11 20:27:58,489 INFO L241 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2021-03-11 20:27:58,489 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=119, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2021-03-11 20:27:58,489 INFO L335 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2021-03-11 20:27:58,489 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2021-03-11 20:27:58,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 20:27:58,489 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:27:58,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:27:58 BasicIcfg [2021-03-11 20:27:58,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:27:58,494 INFO L168 Benchmark]: Toolchain (without parser) took 4831.22 ms. Allocated memory was 354.4 MB in the beginning and 463.5 MB in the end (delta: 109.1 MB). Free memory was 317.4 MB in the beginning and 294.6 MB in the end (delta: 22.8 MB). Peak memory consumption was 134.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:58,494 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 354.4 MB. Free memory was 335.6 MB in the beginning and 335.6 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:27:58,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.53 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 316.1 MB in the end (delta: 723.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:58,495 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.84 ms. Allocated memory is still 354.4 MB. Free memory was 316.1 MB in the beginning and 315.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:58,497 INFO L168 Benchmark]: Boogie Preprocessor took 28.23 ms. Allocated memory is still 354.4 MB. Free memory was 315.0 MB in the beginning and 312.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:58,497 INFO L168 Benchmark]: RCFGBuilder took 487.53 ms. Allocated memory is still 354.4 MB. Free memory was 312.9 MB in the beginning and 289.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:58,500 INFO L168 Benchmark]: TraceAbstraction took 3798.87 ms. Allocated memory was 354.4 MB in the beginning and 463.5 MB in the end (delta: 109.1 MB). Free memory was 288.8 MB in the beginning and 294.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 106.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:27:58,504 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 354.4 MB. Free memory was 335.6 MB in the beginning and 335.6 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 452.53 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 316.1 MB in the end (delta: 723.3 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 54.84 ms. Allocated memory is still 354.4 MB. Free memory was 316.1 MB in the beginning and 315.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.23 ms. Allocated memory is still 354.4 MB. Free memory was 315.0 MB in the beginning and 312.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 487.53 ms. Allocated memory is still 354.4 MB. Free memory was 312.9 MB in the beginning and 289.8 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3798.87 ms. Allocated memory was 354.4 MB in the beginning and 463.5 MB in the end (delta: 109.1 MB). Free memory was 288.8 MB in the beginning and 294.6 MB in the end (delta: -5.9 MB). Peak memory consumption was 106.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2407.6ms, 67 PlacesBefore, 26 PlacesAfterwards, 58 TransitionsBefore, 17 TransitionsAfterwards, 804 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1527 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 929, positive: 858, positive conditional: 0, positive unconditional: 858, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 607, positive: 572, positive conditional: 0, positive unconditional: 572, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 607, positive: 564, positive conditional: 0, positive unconditional: 564, negative: 43, negative conditional: 0, negative unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 35, negative conditional: 0, negative unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 197, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 161, negative conditional: 0, negative unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 929, positive: 286, positive conditional: 0, positive unconditional: 286, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 607, unknown conditional: 0, unknown unconditional: 607] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - 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 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3718.2ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 523.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2473.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 16 SDslu, 13 SDs, 0 SdLazy, 105 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 98.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=266occurred in iteration=6, InterpolantAutomatonStates: 35, 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: 23.5ms SsaConstructionTime, 157.6ms SatisfiabilityAnalysisTime, 355.3ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 69 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...