/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/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:19:48,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:19:48,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:19:48,141 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:19:48,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:19:48,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:19:48,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:19:48,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:19:48,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:19:48,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:19:48,147 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:19:48,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:19:48,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:19:48,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:19:48,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:19:48,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:19:48,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:19:48,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:19:48,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:19:48,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:19:48,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:19:48,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:19:48,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:19:48,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:19:48,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:19:48,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:19:48,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:19:48,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:19:48,180 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 20:19:48,208 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:19:48,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:19:48,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:19:48,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:19:48,211 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:19:48,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:19:48,211 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:19:48,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:19:48,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:19:48,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:19:48,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:19:48,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:19:48,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:19:48,213 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:19:48,213 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:19:48,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:19:48,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:19:48,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:19:48,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:19:48,479 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:19:48,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-03-11 20:19:48,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30c49a4d2/da688fba3a3a4198948a762c55216cce/FLAGef7971bdd [2021-03-11 20:19:48,948 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:19:48,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-03-11 20:19:48,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30c49a4d2/da688fba3a3a4198948a762c55216cce/FLAGef7971bdd [2021-03-11 20:19:49,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30c49a4d2/da688fba3a3a4198948a762c55216cce [2021-03-11 20:19:49,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:19:49,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:19:49,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:19:49,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:19:49,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:19:49,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f66c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49, skipping insertion in model container [2021-03-11 20:19:49,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:19:49,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:19:49,462 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/safe002_tso.oepc.i[950,963] [2021-03-11 20:19:49,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:19:49,621 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:19:49,630 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/safe002_tso.oepc.i[950,963] [2021-03-11 20:19:49,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:19:49,711 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:19:49,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49 WrapperNode [2021-03-11 20:19:49,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:19:49,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:19:49,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:19:49,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:19:49,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:19:49,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:19:49,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:19:49,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:19:49,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (1/1) ... [2021-03-11 20:19:49,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:19:49,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:19:49,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:19:49,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:19:49,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (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 20:19:49,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:19:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:19:49,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:19:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:19:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:19:49,842 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:19:49,842 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:19:49,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:19:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:19:49,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:19:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:19:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:19:49,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:19:49,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:19:49,844 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 20:19:50,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:19:50,179 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:19:50,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:19:50 BoogieIcfgContainer [2021-03-11 20:19:50,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:19:50,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:19:50,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:19:50,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:19:50,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:19:49" (1/3) ... [2021-03-11 20:19:50,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edab66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:19:50, skipping insertion in model container [2021-03-11 20:19:50,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:19:49" (2/3) ... [2021-03-11 20:19:50,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edab66a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:19:50, skipping insertion in model container [2021-03-11 20:19:50,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:19:50" (3/3) ... [2021-03-11 20:19:50,187 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-03-11 20:19:50,191 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:19:50,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:19:50,195 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:19:50,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,224 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,224 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,225 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,226 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,226 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,227 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,228 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,229 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,229 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,230 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,230 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,230 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,230 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,232 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,233 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,236 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,236 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,240 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,240 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,247 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,247 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,247 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:19:50,249 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:19:50,262 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 20:19:50,285 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:19:50,285 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:19:50,285 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:19:50,285 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:19:50,285 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:19:50,286 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:19:50,286 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:19:50,286 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:19:50,295 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:19:50,335 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 20:19:50,335 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:50,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 20:19:50,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 20:19:50,351 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 20:19:50,354 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:19:50,361 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:19:50,363 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 60 transitions, 129 flow [2021-03-11 20:19:50,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 129 flow [2021-03-11 20:19:50,386 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-03-11 20:19:50,386 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:50,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 60 events. 1/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2021-03-11 20:19:50,389 INFO L116 LiptonReduction]: Number of co-enabled transitions 864 [2021-03-11 20:19:52,150 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:19:52,348 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-03-11 20:19:52,413 INFO L131 LiptonReduction]: Checked pairs total: 1856 [2021-03-11 20:19:52,413 INFO L133 LiptonReduction]: Total number of compositions: 47 [2021-03-11 20:19:52,414 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2062 [2021-03-11 20:19:52,420 INFO L129 PetriNetUnfolder]: 0/12 cut-off events. [2021-03-11 20:19:52,420 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:52,420 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:52,421 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:52,421 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:52,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash -373270630, now seen corresponding path program 1 times [2021-03-11 20:19:52,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:52,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549333991] [2021-03-11 20:19:52,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:52,586 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:52,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:52,600 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 20:19:52,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549333991] [2021-03-11 20:19:52,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:52,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:19:52,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019768769] [2021-03-11 20:19:52,607 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:19:52,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:52,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:19:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:19:52,618 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:19:52,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 20:19:52,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:52,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:19:52,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:52,667 INFO L129 PetriNetUnfolder]: 47/133 cut-off events. [2021-03-11 20:19:52,667 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:19:52,667 INFO L84 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 133 events. 47/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 613 event pairs, 19 based on Foata normal form. 36/164 useless extension candidates. Maximal degree in co-relation 231. Up to 63 conditions per place. [2021-03-11 20:19:52,669 INFO L132 encePairwiseOnDemand]: 114/122 looper letters, 6 selfloop transitions, 6 changer transitions 0/22 dead transitions. [2021-03-11 20:19:52,669 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 77 flow [2021-03-11 20:19:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:19:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:19:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2021-03-11 20:19:52,677 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7704918032786885 [2021-03-11 20:19:52,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2021-03-11 20:19:52,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2021-03-11 20:19:52,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:52,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2021-03-11 20:19:52,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 20:19:52,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:52,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:52,688 INFO L185 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 282 transitions. [2021-03-11 20:19:52,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 77 flow [2021-03-11 20:19:52,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:19:52,691 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2021-03-11 20:19:52,692 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2021-03-11 20:19:52,693 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2021-03-11 20:19:52,693 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2021-03-11 20:19:52,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 20:19:52,693 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:52,693 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:52,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:19:52,694 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:52,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:52,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1313511652, now seen corresponding path program 1 times [2021-03-11 20:19:52,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:52,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68555100] [2021-03-11 20:19:52,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:52,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:52,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:52,734 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 20:19:52,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68555100] [2021-03-11 20:19:52,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:52,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:19:52,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740388900] [2021-03-11 20:19:52,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:19:52,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:52,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:19:52,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:19:52,737 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 122 [2021-03-11 20:19:52,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 20:19:52,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:52,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 122 [2021-03-11 20:19:52,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:52,749 INFO L129 PetriNetUnfolder]: 35/106 cut-off events. [2021-03-11 20:19:52,749 INFO L130 PetriNetUnfolder]: For 42/45 co-relation queries the response was YES. [2021-03-11 20:19:52,749 INFO L84 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 106 events. 35/106 cut-off events. For 42/45 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 425 event pairs, 9 based on Foata normal form. 3/106 useless extension candidates. Maximal degree in co-relation 238. Up to 53 conditions per place. [2021-03-11 20:19:52,750 INFO L132 encePairwiseOnDemand]: 119/122 looper letters, 1 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-11 20:19:52,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 94 flow [2021-03-11 20:19:52,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:19:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:19:52,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2021-03-11 20:19:52,755 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8387978142076503 [2021-03-11 20:19:52,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2021-03-11 20:19:52,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2021-03-11 20:19:52,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:52,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2021-03-11 20:19:52,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 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 20:19:52,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:52,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:52,758 INFO L185 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 3 states and 307 transitions. [2021-03-11 20:19:52,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 94 flow [2021-03-11 20:19:52,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:52,759 INFO L241 Difference]: Finished difference. Result has 29 places, 22 transitions, 85 flow [2021-03-11 20:19:52,759 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2021-03-11 20:19:52,760 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2021-03-11 20:19:52,760 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 85 flow [2021-03-11 20:19:52,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 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 20:19:52,760 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:52,760 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:52,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:19:52,760 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:52,761 INFO L82 PathProgramCache]: Analyzing trace with hash 2064160608, now seen corresponding path program 1 times [2021-03-11 20:19:52,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:52,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754712569] [2021-03-11 20:19:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:52,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:52,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:52,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:52,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:52,820 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:52,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:52,828 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 20:19:52,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754712569] [2021-03-11 20:19:52,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:52,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:52,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130120068] [2021-03-11 20:19:52,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:19:52,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:52,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:19:52,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:19:52,830 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:19:52,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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 20:19:52,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:52,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:19:52,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:52,863 INFO L129 PetriNetUnfolder]: 27/97 cut-off events. [2021-03-11 20:19:52,863 INFO L130 PetriNetUnfolder]: For 42/81 co-relation queries the response was YES. [2021-03-11 20:19:52,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 97 events. 27/97 cut-off events. For 42/81 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 412 event pairs, 0 based on Foata normal form. 13/108 useless extension candidates. Maximal degree in co-relation 252. Up to 48 conditions per place. [2021-03-11 20:19:52,864 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 9 selfloop transitions, 8 changer transitions 9/36 dead transitions. [2021-03-11 20:19:52,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 199 flow [2021-03-11 20:19:52,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 465 transitions. [2021-03-11 20:19:52,866 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7622950819672131 [2021-03-11 20:19:52,866 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 465 transitions. [2021-03-11 20:19:52,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 465 transitions. [2021-03-11 20:19:52,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:52,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 465 transitions. [2021-03-11 20:19:52,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 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 20:19:52,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:52,870 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:52,870 INFO L185 Difference]: Start difference. First operand has 29 places, 22 transitions, 85 flow. Second operand 5 states and 465 transitions. [2021-03-11 20:19:52,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 199 flow [2021-03-11 20:19:52,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:52,871 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 125 flow [2021-03-11 20:19:52,872 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-11 20:19:52,872 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2021-03-11 20:19:52,872 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 125 flow [2021-03-11 20:19:52,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 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 20:19:52,872 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:52,872 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:52,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:19:52,873 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:52,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:52,873 INFO L82 PathProgramCache]: Analyzing trace with hash -850063908, now seen corresponding path program 1 times [2021-03-11 20:19:52,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:52,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923952032] [2021-03-11 20:19:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:52,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:52,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:52,914 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:52,914 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:52,921 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 20:19:52,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923952032] [2021-03-11 20:19:52,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:52,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:52,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243776383] [2021-03-11 20:19:52,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:52,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:52,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:52,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:52,923 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:19:52,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 20:19:52,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:52,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:19:52,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:52,939 INFO L129 PetriNetUnfolder]: 12/48 cut-off events. [2021-03-11 20:19:52,939 INFO L130 PetriNetUnfolder]: For 76/101 co-relation queries the response was YES. [2021-03-11 20:19:52,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 48 events. 12/48 cut-off events. For 76/101 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 123 event pairs, 2 based on Foata normal form. 6/53 useless extension candidates. Maximal degree in co-relation 162. Up to 24 conditions per place. [2021-03-11 20:19:52,940 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 7 selfloop transitions, 9 changer transitions 0/26 dead transitions. [2021-03-11 20:19:52,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 173 flow [2021-03-11 20:19:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:52,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 370 transitions. [2021-03-11 20:19:52,941 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7581967213114754 [2021-03-11 20:19:52,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 370 transitions. [2021-03-11 20:19:52,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 370 transitions. [2021-03-11 20:19:52,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:52,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 370 transitions. [2021-03-11 20:19:52,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.5) internal successors, (370), 4 states have internal predecessors, (370), 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 20:19:52,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:52,943 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:52,943 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 125 flow. Second operand 4 states and 370 transitions. [2021-03-11 20:19:52,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 173 flow [2021-03-11 20:19:52,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 158 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 20:19:52,945 INFO L241 Difference]: Finished difference. Result has 36 places, 25 transitions, 149 flow [2021-03-11 20:19:52,945 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2021-03-11 20:19:52,945 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2021-03-11 20:19:52,945 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 149 flow [2021-03-11 20:19:52,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 20:19:52,946 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:52,946 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:52,946 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:19:52,946 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:52,946 INFO L82 PathProgramCache]: Analyzing trace with hash 526454516, now seen corresponding path program 1 times [2021-03-11 20:19:52,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:52,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67418202] [2021-03-11 20:19:52,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:52,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:52,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:19:52,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:52,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,003 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:53,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:53,011 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 20:19:53,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67418202] [2021-03-11 20:19:53,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:53,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:53,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643880173] [2021-03-11 20:19:53,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:53,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:53,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:53,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:53,013 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:19:53,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 20:19:53,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:53,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:19:53,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:53,030 INFO L129 PetriNetUnfolder]: 9/43 cut-off events. [2021-03-11 20:19:53,031 INFO L130 PetriNetUnfolder]: For 76/98 co-relation queries the response was YES. [2021-03-11 20:19:53,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 43 events. 9/43 cut-off events. For 76/98 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 113 event pairs, 2 based on Foata normal form. 9/51 useless extension candidates. Maximal degree in co-relation 150. Up to 19 conditions per place. [2021-03-11 20:19:53,031 INFO L132 encePairwiseOnDemand]: 117/122 looper letters, 10 selfloop transitions, 7 changer transitions 0/27 dead transitions. [2021-03-11 20:19:53,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 196 flow [2021-03-11 20:19:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:19:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:19:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2021-03-11 20:19:53,033 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7540983606557377 [2021-03-11 20:19:53,033 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 368 transitions. [2021-03-11 20:19:53,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 368 transitions. [2021-03-11 20:19:53,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:53,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 368 transitions. [2021-03-11 20:19:53,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 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 20:19:53,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:53,035 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 122.0) internal successors, (610), 5 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:19:53,035 INFO L185 Difference]: Start difference. First operand has 36 places, 25 transitions, 149 flow. Second operand 4 states and 368 transitions. [2021-03-11 20:19:53,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 196 flow [2021-03-11 20:19:53,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 189 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:19:53,037 INFO L241 Difference]: Finished difference. Result has 40 places, 26 transitions, 177 flow [2021-03-11 20:19:53,037 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2021-03-11 20:19:53,037 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2021-03-11 20:19:53,037 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 177 flow [2021-03-11 20:19:53,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 20:19:53,037 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:53,037 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:53,037 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:19:53,038 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:53,038 INFO L82 PathProgramCache]: Analyzing trace with hash 654084162, now seen corresponding path program 1 times [2021-03-11 20:19:53,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:53,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702028401] [2021-03-11 20:19:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:53,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,072 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,075 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,079 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:53,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:53,086 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 20:19:53,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702028401] [2021-03-11 20:19:53,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:53,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:53,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684047563] [2021-03-11 20:19:53,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:19:53,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:53,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:19:53,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:19:53,089 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 122 [2021-03-11 20:19:53,089 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 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 20:19:53,089 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:53,089 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 122 [2021-03-11 20:19:53,089 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:53,114 INFO L129 PetriNetUnfolder]: 9/53 cut-off events. [2021-03-11 20:19:53,114 INFO L130 PetriNetUnfolder]: For 112/134 co-relation queries the response was YES. [2021-03-11 20:19:53,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 53 events. 9/53 cut-off events. For 112/134 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 169 event pairs, 2 based on Foata normal form. 5/57 useless extension candidates. Maximal degree in co-relation 207. Up to 24 conditions per place. [2021-03-11 20:19:53,115 INFO L132 encePairwiseOnDemand]: 115/122 looper letters, 5 selfloop transitions, 8 changer transitions 9/32 dead transitions. [2021-03-11 20:19:53,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 32 transitions, 268 flow [2021-03-11 20:19:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 460 transitions. [2021-03-11 20:19:53,116 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7540983606557377 [2021-03-11 20:19:53,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 460 transitions. [2021-03-11 20:19:53,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 460 transitions. [2021-03-11 20:19:53,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:53,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 460 transitions. [2021-03-11 20:19:53,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 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 20:19:53,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,119 INFO L185 Difference]: Start difference. First operand has 40 places, 26 transitions, 177 flow. Second operand 5 states and 460 transitions. [2021-03-11 20:19:53,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 32 transitions, 268 flow [2021-03-11 20:19:53,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 252 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:53,123 INFO L241 Difference]: Finished difference. Result has 43 places, 23 transitions, 157 flow [2021-03-11 20:19:53,123 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=43, PETRI_TRANSITIONS=23} [2021-03-11 20:19:53,123 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2021-03-11 20:19:53,123 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 23 transitions, 157 flow [2021-03-11 20:19:53,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 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 20:19:53,123 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:53,124 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:53,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:19:53,124 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:53,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:53,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1306085204, now seen corresponding path program 2 times [2021-03-11 20:19:53,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:53,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193404531] [2021-03-11 20:19:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:53,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:19:53,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,164 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,167 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 20:19:53,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193404531] [2021-03-11 20:19:53,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:53,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:53,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542183490] [2021-03-11 20:19:53,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:53,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:53,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:53,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:53,169 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2021-03-11 20:19:53,169 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 23 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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 20:19:53,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:53,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2021-03-11 20:19:53,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:53,185 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-03-11 20:19:53,185 INFO L130 PetriNetUnfolder]: For 79/80 co-relation queries the response was YES. [2021-03-11 20:19:53,186 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 35 events. 5/35 cut-off events. For 79/80 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 75 event pairs, 2 based on Foata normal form. 3/38 useless extension candidates. Maximal degree in co-relation 130. Up to 17 conditions per place. [2021-03-11 20:19:53,186 INFO L132 encePairwiseOnDemand]: 118/122 looper letters, 4 selfloop transitions, 2 changer transitions 6/23 dead transitions. [2021-03-11 20:19:53,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 23 transitions, 179 flow [2021-03-11 20:19:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:53,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 480 transitions. [2021-03-11 20:19:53,187 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7868852459016393 [2021-03-11 20:19:53,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 480 transitions. [2021-03-11 20:19:53,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 480 transitions. [2021-03-11 20:19:53,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:53,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 480 transitions. [2021-03-11 20:19:53,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 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 20:19:53,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,189 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,189 INFO L185 Difference]: Start difference. First operand has 43 places, 23 transitions, 157 flow. Second operand 5 states and 480 transitions. [2021-03-11 20:19:53,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 23 transitions, 179 flow [2021-03-11 20:19:53,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 23 transitions, 147 flow, removed 2 selfloop flow, removed 8 redundant places. [2021-03-11 20:19:53,191 INFO L241 Difference]: Finished difference. Result has 40 places, 17 transitions, 80 flow [2021-03-11 20:19:53,191 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=40, PETRI_TRANSITIONS=17} [2021-03-11 20:19:53,191 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2021-03-11 20:19:53,191 INFO L480 AbstractCegarLoop]: Abstraction has has 40 places, 17 transitions, 80 flow [2021-03-11 20:19:53,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 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 20:19:53,191 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:53,191 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:53,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:19:53,191 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:53,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash -582186448, now seen corresponding path program 3 times [2021-03-11 20:19:53,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:53,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804401198] [2021-03-11 20:19:53,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:53,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,223 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:19:53,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:19:53,229 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 20:19:53,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804401198] [2021-03-11 20:19:53,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:53,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:19:53,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370499641] [2021-03-11 20:19:53,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:53,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:53,230 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:19:53,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 17 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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 20:19:53,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:53,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:19:53,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:53,254 INFO L129 PetriNetUnfolder]: 32/76 cut-off events. [2021-03-11 20:19:53,254 INFO L130 PetriNetUnfolder]: For 320/355 co-relation queries the response was YES. [2021-03-11 20:19:53,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 76 events. 32/76 cut-off events. For 320/355 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 230 event pairs, 16 based on Foata normal form. 12/80 useless extension candidates. Maximal degree in co-relation 207. Up to 49 conditions per place. [2021-03-11 20:19:53,255 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 4 changer transitions 7/27 dead transitions. [2021-03-11 20:19:53,255 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 27 transitions, 132 flow [2021-03-11 20:19:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2021-03-11 20:19:53,256 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7754098360655738 [2021-03-11 20:19:53,256 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2021-03-11 20:19:53,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2021-03-11 20:19:53,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:53,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2021-03-11 20:19:53,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 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 20:19:53,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,259 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,259 INFO L185 Difference]: Start difference. First operand has 40 places, 17 transitions, 80 flow. Second operand 5 states and 473 transitions. [2021-03-11 20:19:53,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 27 transitions, 132 flow [2021-03-11 20:19:53,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 106 flow, removed 5 selfloop flow, removed 10 redundant places. [2021-03-11 20:19:53,260 INFO L241 Difference]: Finished difference. Result has 34 places, 20 transitions, 90 flow [2021-03-11 20:19:53,260 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2021-03-11 20:19:53,260 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2021-03-11 20:19:53,260 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 90 flow [2021-03-11 20:19:53,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 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 20:19:53,260 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:53,260 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:53,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:19:53,261 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:53,261 INFO L82 PathProgramCache]: Analyzing trace with hash -465109221, now seen corresponding path program 1 times [2021-03-11 20:19:53,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:53,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493652268] [2021-03-11 20:19:53,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:53,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,299 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:19:53,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:19:53,307 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 20:19:53,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493652268] [2021-03-11 20:19:53,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:53,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:53,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287840291] [2021-03-11 20:19:53,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:19:53,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:53,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:19:53,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:19:53,309 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:19:53,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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 20:19:53,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:53,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:19:53,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:53,339 INFO L129 PetriNetUnfolder]: 17/52 cut-off events. [2021-03-11 20:19:53,339 INFO L130 PetriNetUnfolder]: For 145/204 co-relation queries the response was YES. [2021-03-11 20:19:53,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 52 events. 17/52 cut-off events. For 145/204 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 118 event pairs, 3 based on Foata normal form. 20/69 useless extension candidates. Maximal degree in co-relation 181. Up to 35 conditions per place. [2021-03-11 20:19:53,339 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 5 selfloop transitions, 7 changer transitions 7/30 dead transitions. [2021-03-11 20:19:53,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 186 flow [2021-03-11 20:19:53,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 20:19:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-11 20:19:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 567 transitions. [2021-03-11 20:19:53,341 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7745901639344263 [2021-03-11 20:19:53,341 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 567 transitions. [2021-03-11 20:19:53,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 567 transitions. [2021-03-11 20:19:53,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:53,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 567 transitions. [2021-03-11 20:19:53,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.5) internal successors, (567), 6 states have internal predecessors, (567), 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 20:19:53,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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 20:19:53,343 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 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 20:19:53,343 INFO L185 Difference]: Start difference. First operand has 34 places, 20 transitions, 90 flow. Second operand 6 states and 567 transitions. [2021-03-11 20:19:53,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 186 flow [2021-03-11 20:19:53,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 180 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:19:53,344 INFO L241 Difference]: Finished difference. Result has 38 places, 23 transitions, 140 flow [2021-03-11 20:19:53,344 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2021-03-11 20:19:53,345 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2021-03-11 20:19:53,345 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 140 flow [2021-03-11 20:19:53,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 91.8) internal successors, (459), 5 states have internal predecessors, (459), 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 20:19:53,345 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:53,345 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:53,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:19:53,345 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:53,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:53,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1985358734, now seen corresponding path program 1 times [2021-03-11 20:19:53,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:53,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754846643] [2021-03-11 20:19:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:53,394 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,410 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:19:53,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:19:53,417 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 20:19:53,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754846643] [2021-03-11 20:19:53,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:53,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:19:53,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630149347] [2021-03-11 20:19:53,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:19:53,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:53,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:19:53,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:19:53,421 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2021-03-11 20:19:53,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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 20:19:53,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:53,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2021-03-11 20:19:53,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:53,466 INFO L129 PetriNetUnfolder]: 7/32 cut-off events. [2021-03-11 20:19:53,466 INFO L130 PetriNetUnfolder]: For 122/155 co-relation queries the response was YES. [2021-03-11 20:19:53,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 32 events. 7/32 cut-off events. For 122/155 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 14/45 useless extension candidates. Maximal degree in co-relation 127. Up to 20 conditions per place. [2021-03-11 20:19:53,466 INFO L132 encePairwiseOnDemand]: 116/122 looper letters, 2 selfloop transitions, 10 changer transitions 4/27 dead transitions. [2021-03-11 20:19:53,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 208 flow [2021-03-11 20:19:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:19:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:19:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 655 transitions. [2021-03-11 20:19:53,468 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7669789227166276 [2021-03-11 20:19:53,468 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 655 transitions. [2021-03-11 20:19:53,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 655 transitions. [2021-03-11 20:19:53,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:53,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 655 transitions. [2021-03-11 20:19:53,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.57142857142857) internal successors, (655), 7 states have internal predecessors, (655), 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 20:19:53,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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 20:19:53,471 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 122.0) internal successors, (976), 8 states have internal predecessors, (976), 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 20:19:53,471 INFO L185 Difference]: Start difference. First operand has 38 places, 23 transitions, 140 flow. Second operand 7 states and 655 transitions. [2021-03-11 20:19:53,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 208 flow [2021-03-11 20:19:53,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 170 flow, removed 15 selfloop flow, removed 4 redundant places. [2021-03-11 20:19:53,472 INFO L241 Difference]: Finished difference. Result has 41 places, 23 transitions, 140 flow [2021-03-11 20:19:53,473 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2021-03-11 20:19:53,473 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2021-03-11 20:19:53,473 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 140 flow [2021-03-11 20:19:53,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 91.83333333333333) internal successors, (551), 6 states have internal predecessors, (551), 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 20:19:53,474 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:19:53,474 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:19:53,474 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:19:53,474 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:19:53,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:19:53,475 INFO L82 PathProgramCache]: Analyzing trace with hash -608261883, now seen corresponding path program 1 times [2021-03-11 20:19:53,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:19:53,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335733523] [2021-03-11 20:19:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:19:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:19:53,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:19:53,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:19:53,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:19:53,511 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:19:53,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:19:53,521 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 20:19:53,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335733523] [2021-03-11 20:19:53,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:19:53,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:19:53,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236428372] [2021-03-11 20:19:53,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:19:53,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:19:53,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:19:53,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:19:53,523 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 122 [2021-03-11 20:19:53,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 20:19:53,523 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:19:53,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 122 [2021-03-11 20:19:53,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:19:53,540 INFO L129 PetriNetUnfolder]: 5/25 cut-off events. [2021-03-11 20:19:53,540 INFO L130 PetriNetUnfolder]: For 51/58 co-relation queries the response was YES. [2021-03-11 20:19:53,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 51/58 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 2/26 useless extension candidates. Maximal degree in co-relation 83. Up to 11 conditions per place. [2021-03-11 20:19:53,540 INFO L132 encePairwiseOnDemand]: 117/122 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2021-03-11 20:19:53,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 22 transitions, 142 flow [2021-03-11 20:19:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:19:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:19:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2021-03-11 20:19:53,542 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7098360655737705 [2021-03-11 20:19:53,542 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2021-03-11 20:19:53,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2021-03-11 20:19:53,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:19:53,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2021-03-11 20:19:53,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 20:19:53,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,544 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 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 20:19:53,544 INFO L185 Difference]: Start difference. First operand has 41 places, 23 transitions, 140 flow. Second operand 5 states and 433 transitions. [2021-03-11 20:19:53,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 22 transitions, 142 flow [2021-03-11 20:19:53,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 22 transitions, 108 flow, removed 9 selfloop flow, removed 5 redundant places. [2021-03-11 20:19:53,545 INFO L241 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2021-03-11 20:19:53,545 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=122, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2021-03-11 20:19:53,545 INFO L335 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2021-03-11 20:19:53,545 INFO L480 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2021-03-11 20:19:53,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 20:19:53,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:19:53,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:19:53 BasicIcfg [2021-03-11 20:19:53,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:19:53,551 INFO L168 Benchmark]: Toolchain (without parser) took 4238.15 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 298.9 MB in the beginning and 359.2 MB in the end (delta: -60.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:53,551 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 335.5 MB. Free memory is still 317.1 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:19:53,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.45 ms. Allocated memory is still 335.5 MB. Free memory was 298.3 MB in the beginning and 298.9 MB in the end (delta: -630.2 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:53,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 335.5 MB. Free memory was 298.9 MB in the beginning and 296.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:53,553 INFO L168 Benchmark]: Boogie Preprocessor took 13.10 ms. Allocated memory is still 335.5 MB. Free memory was 296.8 MB in the beginning and 295.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:53,554 INFO L168 Benchmark]: RCFGBuilder took 410.53 ms. Allocated memory is still 335.5 MB. Free memory was 295.8 MB in the beginning and 270.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:19:53,554 INFO L168 Benchmark]: TraceAbstraction took 3366.56 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 270.6 MB in the beginning and 359.2 MB in the end (delta: -88.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:19:53,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 335.5 MB. Free memory is still 317.1 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 396.45 ms. Allocated memory is still 335.5 MB. Free memory was 298.3 MB in the beginning and 298.9 MB in the end (delta: -630.2 kB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 335.5 MB. Free memory was 298.9 MB in the beginning and 296.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.10 ms. Allocated memory is still 335.5 MB. Free memory was 296.8 MB in the beginning and 295.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 410.53 ms. Allocated memory is still 335.5 MB. Free memory was 295.8 MB in the beginning and 270.6 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3366.56 ms. Allocated memory was 335.5 MB in the beginning and 402.7 MB in the end (delta: 67.1 MB). Free memory was 270.6 MB in the beginning and 359.2 MB in the end (delta: -88.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2050.3ms, 69 PlacesBefore, 27 PlacesAfterwards, 60 TransitionsBefore, 18 TransitionsAfterwards, 864 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 0 ChoiceCompositions, 47 TotalNumberOfCompositions, 1856 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 930, positive: 845, positive conditional: 0, positive unconditional: 845, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 621, positive: 584, positive conditional: 0, positive unconditional: 584, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 621, positive: 577, positive conditional: 0, positive unconditional: 577, negative: 44, negative conditional: 0, negative unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 202, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 173, negative conditional: 0, negative unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 930, positive: 261, positive conditional: 0, positive unconditional: 261, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 621, unknown conditional: 0, unknown unconditional: 621] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3264.7ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 392.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2131.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 34 SDslu, 24 SDs, 0 SdLazy, 151 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 136.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=5, InterpolantAutomatonStates: 52, 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: 18.7ms SsaConstructionTime, 135.7ms SatisfiabilityAnalysisTime, 444.6ms InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 613 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...