/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:32:53,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:32:53,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:32:53,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 02:32:53,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 02:32:53,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 02:32:53,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 02:32:53,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 02:32:53,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 02:32:53,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 02:32:53,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 02:32:53,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 02:32:53,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:32:53,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:32:53,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:32:53,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:32:53,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:32:53,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:32:53,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:32:53,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:32:53,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:32:53,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:32:53,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:32:53,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:32:53,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:32:53,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:32:53,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:32:53,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:32:53,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:32:53,399 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:32:53,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:32:53,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:32:53,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:32:53,400 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:32:53,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:32:53,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:32:53,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:32:53,402 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:32:53,402 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:32:53,403 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:32:53,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:32:53,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:32:53,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:32:53,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:32:53,698 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:32:53,699 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:32:53,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-11 02:32:53,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa78ed05/a3efbebae44441aa99e1ae667f991e52/FLAGf0ea40537 [2021-03-11 02:32:54,191 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:32:54,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-03-11 02:32:54,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa78ed05/a3efbebae44441aa99e1ae667f991e52/FLAGf0ea40537 [2021-03-11 02:32:54,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fa78ed05/a3efbebae44441aa99e1ae667f991e52 [2021-03-11 02:32:54,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:32:54,221 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:32:54,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:32:54,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:32:54,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:32:54,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b1c4a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54, skipping insertion in model container [2021-03-11 02:32:54,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:32:54,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:32:54,408 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/safe014_pso.oepc.i[950,963] [2021-03-11 02:32:54,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:32:54,533 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:32:54,540 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/safe014_pso.oepc.i[950,963] [2021-03-11 02:32:54,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:32:54,624 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:32:54,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54 WrapperNode [2021-03-11 02:32:54,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:32:54,625 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:32:54,625 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:32:54,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:32:54,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:32:54,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:32:54,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:32:54,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:32:54,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,657 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,660 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... [2021-03-11 02:32:54,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:32:54,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:32:54,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:32:54,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:32:54,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:32:54,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:32:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:32:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:32:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:32:54,725 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:32:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:32:54,726 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:32:54,726 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:32:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:32:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:32:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:32:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:32:54,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:32:54,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:32:54,728 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 02:32:55,007 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:32:55,007 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:32:55,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:32:55 BoogieIcfgContainer [2021-03-11 02:32:55,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:32:55,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:32:55,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:32:55,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:32:55,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:32:54" (1/3) ... [2021-03-11 02:32:55,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dade2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:32:55, skipping insertion in model container [2021-03-11 02:32:55,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:32:54" (2/3) ... [2021-03-11 02:32:55,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24dade2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:32:55, skipping insertion in model container [2021-03-11 02:32:55,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:32:55" (3/3) ... [2021-03-11 02:32:55,014 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-03-11 02:32:55,018 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:32:55,021 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:32:55,022 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:32:55,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,047 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,047 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,048 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,049 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,049 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,050 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,052 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,052 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,052 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,053 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,053 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,055 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,056 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,058 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,058 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:32:55,070 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:32:55,083 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:32:55,105 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:32:55,105 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:32:55,105 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:32:55,105 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:32:55,105 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:32:55,105 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:32:55,105 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:32:55,106 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:32:55,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:32:55,158 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2021-03-11 02:32:55,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:55,162 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 02:32:55,162 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 75 transitions, 165 flow [2021-03-11 02:32:55,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 60 transitions, 129 flow [2021-03-11 02:32:55,178 INFO L129 PetriNetUnfolder]: 1/59 cut-off events. [2021-03-11 02:32:55,178 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:55,179 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:55,179 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:55,180 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:55,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1780672703, now seen corresponding path program 1 times [2021-03-11 02:32:55,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:55,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569672954] [2021-03-11 02:32:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:55,401 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:55,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:55,415 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:32:55,416 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:32:55,427 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:55,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:55,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:55,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:55,463 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:55,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:55,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569672954] [2021-03-11 02:32:55,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:55,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:55,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808981022] [2021-03-11 02:32:55,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:55,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:55,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:55,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:55,482 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:32:55,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:55,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:55,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:32:55,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:55,761 INFO L129 PetriNetUnfolder]: 304/746 cut-off events. [2021-03-11 02:32:55,761 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:32:55,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 746 events. 304/746 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4595 event pairs, 60 based on Foata normal form. 32/755 useless extension candidates. Maximal degree in co-relation 1243. Up to 147 conditions per place. [2021-03-11 02:32:55,766 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 20 selfloop transitions, 6 changer transitions 47/117 dead transitions. [2021-03-11 02:32:55,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 389 flow [2021-03-11 02:32:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:55,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 807 transitions. [2021-03-11 02:32:55,777 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8276923076923077 [2021-03-11 02:32:55,778 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 807 transitions. [2021-03-11 02:32:55,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 807 transitions. [2021-03-11 02:32:55,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:55,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 807 transitions. [2021-03-11 02:32:55,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 62.07692307692308) internal successors, (807), 13 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:55,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:55,790 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:55,791 INFO L185 Difference]: Start difference. First operand has 69 places, 60 transitions, 129 flow. Second operand 13 states and 807 transitions. [2021-03-11 02:32:55,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 389 flow [2021-03-11 02:32:55,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 117 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:32:55,796 INFO L241 Difference]: Finished difference. Result has 90 places, 63 transitions, 210 flow [2021-03-11 02:32:55,797 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=63} [2021-03-11 02:32:55,798 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 21 predicate places. [2021-03-11 02:32:55,798 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 63 transitions, 210 flow [2021-03-11 02:32:55,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:55,798 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:55,799 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:55,799 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:32:55,799 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:55,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:55,799 INFO L82 PathProgramCache]: Analyzing trace with hash -880296958, now seen corresponding path program 1 times [2021-03-11 02:32:55,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:55,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974835650] [2021-03-11 02:32:55,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:55,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:55,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:55,860 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:32:55,861 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:32:55,868 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:55,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:55,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,881 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:55,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:55,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:55,895 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:55,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974835650] [2021-03-11 02:32:55,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:55,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:55,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224788234] [2021-03-11 02:32:55,896 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:55,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:55,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:55,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:55,898 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:32:55,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 63 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:55,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:55,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:32:55,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:56,105 INFO L129 PetriNetUnfolder]: 168/506 cut-off events. [2021-03-11 02:32:56,105 INFO L130 PetriNetUnfolder]: For 1185/1503 co-relation queries the response was YES. [2021-03-11 02:32:56,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 506 events. 168/506 cut-off events. For 1185/1503 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2794 event pairs, 2 based on Foata normal form. 19/511 useless extension candidates. Maximal degree in co-relation 1608. Up to 112 conditions per place. [2021-03-11 02:32:56,110 INFO L132 encePairwiseOnDemand]: 63/75 looper letters, 22 selfloop transitions, 11 changer transitions 52/129 dead transitions. [2021-03-11 02:32:56,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 129 transitions, 882 flow [2021-03-11 02:32:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 798 transitions. [2021-03-11 02:32:56,115 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8184615384615385 [2021-03-11 02:32:56,115 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 798 transitions. [2021-03-11 02:32:56,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 798 transitions. [2021-03-11 02:32:56,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:56,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 798 transitions. [2021-03-11 02:32:56,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.38461538461539) internal successors, (798), 13 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,119 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,119 INFO L185 Difference]: Start difference. First operand has 90 places, 63 transitions, 210 flow. Second operand 13 states and 798 transitions. [2021-03-11 02:32:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 129 transitions, 882 flow [2021-03-11 02:32:56,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 129 transitions, 854 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-03-11 02:32:56,129 INFO L241 Difference]: Finished difference. Result has 101 places, 69 transitions, 339 flow [2021-03-11 02:32:56,129 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=339, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2021-03-11 02:32:56,129 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 32 predicate places. [2021-03-11 02:32:56,129 INFO L480 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 339 flow [2021-03-11 02:32:56,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.57142857142857) internal successors, (403), 7 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,130 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:56,130 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:56,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:32:56,131 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1341594819, now seen corresponding path program 1 times [2021-03-11 02:32:56,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:56,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424844004] [2021-03-11 02:32:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:56,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:56,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:56,221 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:56,226 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:32:56,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:32:56,235 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:56,237 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:56,250 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:56,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:56,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:56,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:56,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424844004] [2021-03-11 02:32:56,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:56,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:56,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295448479] [2021-03-11 02:32:56,271 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:56,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:56,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:56,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:56,272 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 75 [2021-03-11 02:32:56,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:56,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 75 [2021-03-11 02:32:56,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:56,463 INFO L129 PetriNetUnfolder]: 199/551 cut-off events. [2021-03-11 02:32:56,464 INFO L130 PetriNetUnfolder]: For 2803/3247 co-relation queries the response was YES. [2021-03-11 02:32:56,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2211 conditions, 551 events. 199/551 cut-off events. For 2803/3247 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2838 event pairs, 8 based on Foata normal form. 21/560 useless extension candidates. Maximal degree in co-relation 2153. Up to 116 conditions per place. [2021-03-11 02:32:56,472 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 24 selfloop transitions, 8 changer transitions 62/136 dead transitions. [2021-03-11 02:32:56,472 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 1195 flow [2021-03-11 02:32:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:32:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:32:56,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 656 transitions. [2021-03-11 02:32:56,474 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7951515151515152 [2021-03-11 02:32:56,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 656 transitions. [2021-03-11 02:32:56,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 656 transitions. [2021-03-11 02:32:56,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:56,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 656 transitions. [2021-03-11 02:32:56,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 59.63636363636363) internal successors, (656), 11 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,477 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 75.0) internal successors, (900), 12 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,477 INFO L185 Difference]: Start difference. First operand has 101 places, 69 transitions, 339 flow. Second operand 11 states and 656 transitions. [2021-03-11 02:32:56,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 1195 flow [2021-03-11 02:32:56,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 136 transitions, 1132 flow, removed 30 selfloop flow, removed 4 redundant places. [2021-03-11 02:32:56,491 INFO L241 Difference]: Finished difference. Result has 106 places, 65 transitions, 306 flow [2021-03-11 02:32:56,491 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=306, PETRI_PLACES=106, PETRI_TRANSITIONS=65} [2021-03-11 02:32:56,492 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 37 predicate places. [2021-03-11 02:32:56,492 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 65 transitions, 306 flow [2021-03-11 02:32:56,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,492 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:56,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:56,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:32:56,492 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:56,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:56,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1532306767, now seen corresponding path program 1 times [2021-03-11 02:32:56,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:56,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336992669] [2021-03-11 02:32:56,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:56,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,551 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:56,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:56,559 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:32:56,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:32:56,571 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:56,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:56,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:56,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:56,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:56,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336992669] [2021-03-11 02:32:56,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:56,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:56,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141815674] [2021-03-11 02:32:56,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:56,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:56,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:56,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:56,604 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:32:56,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 65 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:56,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:32:56,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:56,803 INFO L129 PetriNetUnfolder]: 47/236 cut-off events. [2021-03-11 02:32:56,803 INFO L130 PetriNetUnfolder]: For 987/1054 co-relation queries the response was YES. [2021-03-11 02:32:56,804 INFO L84 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 236 events. 47/236 cut-off events. For 987/1054 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1060 event pairs, 0 based on Foata normal form. 9/244 useless extension candidates. Maximal degree in co-relation 858. Up to 39 conditions per place. [2021-03-11 02:32:56,805 INFO L132 encePairwiseOnDemand]: 62/75 looper letters, 17 selfloop transitions, 13 changer transitions 28/102 dead transitions. [2021-03-11 02:32:56,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 802 flow [2021-03-11 02:32:56,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 782 transitions. [2021-03-11 02:32:56,807 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8020512820512821 [2021-03-11 02:32:56,807 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 782 transitions. [2021-03-11 02:32:56,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 782 transitions. [2021-03-11 02:32:56,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:56,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 782 transitions. [2021-03-11 02:32:56,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.15384615384615) internal successors, (782), 13 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,811 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,811 INFO L185 Difference]: Start difference. First operand has 106 places, 65 transitions, 306 flow. Second operand 13 states and 782 transitions. [2021-03-11 02:32:56,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 802 flow [2021-03-11 02:32:56,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 682 flow, removed 35 selfloop flow, removed 12 redundant places. [2021-03-11 02:32:56,816 INFO L241 Difference]: Finished difference. Result has 112 places, 68 transitions, 382 flow [2021-03-11 02:32:56,817 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=382, PETRI_PLACES=112, PETRI_TRANSITIONS=68} [2021-03-11 02:32:56,817 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 43 predicate places. [2021-03-11 02:32:56,817 INFO L480 AbstractCegarLoop]: Abstraction has has 112 places, 68 transitions, 382 flow [2021-03-11 02:32:56,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:56,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:56,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:32:56,819 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:56,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1957084048, now seen corresponding path program 1 times [2021-03-11 02:32:56,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:56,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176566798] [2021-03-11 02:32:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:56,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:56,857 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,858 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:56,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,860 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:56,863 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:32:56,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:32:56,870 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:56,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:56,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:56,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,890 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:56,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:56,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:56,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176566798] [2021-03-11 02:32:56,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:56,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:56,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945485424] [2021-03-11 02:32:56,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:56,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:56,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:56,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:56,899 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:32:56,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 68 transitions, 382 flow. Second operand has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:56,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:56,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:32:56,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:57,142 INFO L129 PetriNetUnfolder]: 36/250 cut-off events. [2021-03-11 02:32:57,143 INFO L130 PetriNetUnfolder]: For 1414/1497 co-relation queries the response was YES. [2021-03-11 02:32:57,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 250 events. 36/250 cut-off events. For 1414/1497 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1244 event pairs, 0 based on Foata normal form. 18/267 useless extension candidates. Maximal degree in co-relation 924. Up to 34 conditions per place. [2021-03-11 02:32:57,144 INFO L132 encePairwiseOnDemand]: 64/75 looper letters, 16 selfloop transitions, 13 changer transitions 49/122 dead transitions. [2021-03-11 02:32:57,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 122 transitions, 1166 flow [2021-03-11 02:32:57,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-03-11 02:32:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-03-11 02:32:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1246 transitions. [2021-03-11 02:32:57,147 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7911111111111111 [2021-03-11 02:32:57,147 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1246 transitions. [2021-03-11 02:32:57,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1246 transitions. [2021-03-11 02:32:57,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:57,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1246 transitions. [2021-03-11 02:32:57,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 59.333333333333336) internal successors, (1246), 21 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 75.0) internal successors, (1650), 22 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,152 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 75.0) internal successors, (1650), 22 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,152 INFO L185 Difference]: Start difference. First operand has 112 places, 68 transitions, 382 flow. Second operand 21 states and 1246 transitions. [2021-03-11 02:32:57,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 122 transitions, 1166 flow [2021-03-11 02:32:57,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 122 transitions, 1026 flow, removed 68 selfloop flow, removed 7 redundant places. [2021-03-11 02:32:57,157 INFO L241 Difference]: Finished difference. Result has 136 places, 69 transitions, 456 flow [2021-03-11 02:32:57,157 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=456, PETRI_PLACES=136, PETRI_TRANSITIONS=69} [2021-03-11 02:32:57,157 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 67 predicate places. [2021-03-11 02:32:57,157 INFO L480 AbstractCegarLoop]: Abstraction has has 136 places, 69 transitions, 456 flow [2021-03-11 02:32:57,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,157 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:57,157 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:57,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:32:57,158 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:57,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:57,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1688140546, now seen corresponding path program 1 times [2021-03-11 02:32:57,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:57,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400205592] [2021-03-11 02:32:57,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:57,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,180 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,183 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:57,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:57,194 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:57,200 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:57,201 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:57,207 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:57,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400205592] [2021-03-11 02:32:57,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:57,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:32:57,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342772886] [2021-03-11 02:32:57,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:32:57,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:57,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:32:57,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:32:57,209 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:32:57,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 69 transitions, 456 flow. Second operand has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:57,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:32:57,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:57,334 INFO L129 PetriNetUnfolder]: 231/611 cut-off events. [2021-03-11 02:32:57,335 INFO L130 PetriNetUnfolder]: For 1029/1062 co-relation queries the response was YES. [2021-03-11 02:32:57,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 611 events. 231/611 cut-off events. For 1029/1062 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 3932 event pairs, 4 based on Foata normal form. 9/581 useless extension candidates. Maximal degree in co-relation 1436. Up to 166 conditions per place. [2021-03-11 02:32:57,339 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 15 selfloop transitions, 13 changer transitions 13/99 dead transitions. [2021-03-11 02:32:57,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 99 transitions, 598 flow [2021-03-11 02:32:57,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:32:57,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:32:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 653 transitions. [2021-03-11 02:32:57,341 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8706666666666667 [2021-03-11 02:32:57,341 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 653 transitions. [2021-03-11 02:32:57,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 653 transitions. [2021-03-11 02:32:57,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:57,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 653 transitions. [2021-03-11 02:32:57,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.3) internal successors, (653), 10 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,343 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 75.0) internal successors, (825), 11 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,343 INFO L185 Difference]: Start difference. First operand has 136 places, 69 transitions, 456 flow. Second operand 10 states and 653 transitions. [2021-03-11 02:32:57,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 99 transitions, 598 flow [2021-03-11 02:32:57,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 99 transitions, 517 flow, removed 37 selfloop flow, removed 21 redundant places. [2021-03-11 02:32:57,348 INFO L241 Difference]: Finished difference. Result has 113 places, 81 transitions, 473 flow [2021-03-11 02:32:57,348 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=473, PETRI_PLACES=113, PETRI_TRANSITIONS=81} [2021-03-11 02:32:57,348 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2021-03-11 02:32:57,349 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 81 transitions, 473 flow [2021-03-11 02:32:57,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,349 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:57,349 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:57,349 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:32:57,349 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:57,349 INFO L82 PathProgramCache]: Analyzing trace with hash 141561641, now seen corresponding path program 1 times [2021-03-11 02:32:57,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:57,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613152568] [2021-03-11 02:32:57,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:57,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,373 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,375 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,375 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,379 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:57,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:57,392 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:57,398 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:57,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:57,405 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:57,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613152568] [2021-03-11 02:32:57,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:57,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:32:57,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437981241] [2021-03-11 02:32:57,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:32:57,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:57,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:32:57,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:32:57,407 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:32:57,407 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 81 transitions, 473 flow. Second operand has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,407 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:57,407 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:32:57,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:57,574 INFO L129 PetriNetUnfolder]: 191/575 cut-off events. [2021-03-11 02:32:57,574 INFO L130 PetriNetUnfolder]: For 1264/1643 co-relation queries the response was YES. [2021-03-11 02:32:57,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1918 conditions, 575 events. 191/575 cut-off events. For 1264/1643 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3965 event pairs, 0 based on Foata normal form. 55/610 useless extension candidates. Maximal degree in co-relation 1887. Up to 171 conditions per place. [2021-03-11 02:32:57,577 INFO L132 encePairwiseOnDemand]: 65/75 looper letters, 17 selfloop transitions, 17 changer transitions 24/116 dead transitions. [2021-03-11 02:32:57,577 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 116 transitions, 785 flow [2021-03-11 02:32:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:32:57,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:32:57,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 845 transitions. [2021-03-11 02:32:57,579 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2021-03-11 02:32:57,579 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 845 transitions. [2021-03-11 02:32:57,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 845 transitions. [2021-03-11 02:32:57,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:57,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 845 transitions. [2021-03-11 02:32:57,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.0) internal successors, (845), 13 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,582 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 75.0) internal successors, (1050), 14 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,582 INFO L185 Difference]: Start difference. First operand has 113 places, 81 transitions, 473 flow. Second operand 13 states and 845 transitions. [2021-03-11 02:32:57,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 116 transitions, 785 flow [2021-03-11 02:32:57,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 752 flow, removed 9 selfloop flow, removed 8 redundant places. [2021-03-11 02:32:57,586 INFO L241 Difference]: Finished difference. Result has 124 places, 87 transitions, 566 flow [2021-03-11 02:32:57,587 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=566, PETRI_PLACES=124, PETRI_TRANSITIONS=87} [2021-03-11 02:32:57,587 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 55 predicate places. [2021-03-11 02:32:57,587 INFO L480 AbstractCegarLoop]: Abstraction has has 124 places, 87 transitions, 566 flow [2021-03-11 02:32:57,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 62.142857142857146) internal successors, (435), 7 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,587 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:57,587 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:57,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:32:57,587 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:57,588 INFO L82 PathProgramCache]: Analyzing trace with hash 180215324, now seen corresponding path program 1 times [2021-03-11 02:32:57,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:57,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374632652] [2021-03-11 02:32:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:57,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,619 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,623 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:32:57,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:32:57,636 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,636 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:32:57,643 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:32:57,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:57,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:57,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374632652] [2021-03-11 02:32:57,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:57,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:57,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803452855] [2021-03-11 02:32:57,655 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:57,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:57,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:57,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:57,658 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 75 [2021-03-11 02:32:57,659 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 87 transitions, 566 flow. Second operand has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,659 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:57,659 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 75 [2021-03-11 02:32:57,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:57,847 INFO L129 PetriNetUnfolder]: 61/347 cut-off events. [2021-03-11 02:32:57,847 INFO L130 PetriNetUnfolder]: For 1593/2256 co-relation queries the response was YES. [2021-03-11 02:32:57,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1349 conditions, 347 events. 61/347 cut-off events. For 1593/2256 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2250 event pairs, 0 based on Foata normal form. 72/405 useless extension candidates. Maximal degree in co-relation 1317. Up to 97 conditions per place. [2021-03-11 02:32:57,850 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 11 selfloop transitions, 20 changer transitions 17/103 dead transitions. [2021-03-11 02:32:57,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 103 transitions, 786 flow [2021-03-11 02:32:57,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-11 02:32:57,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-03-11 02:32:57,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 958 transitions. [2021-03-11 02:32:57,852 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8515555555555555 [2021-03-11 02:32:57,852 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 958 transitions. [2021-03-11 02:32:57,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 958 transitions. [2021-03-11 02:32:57,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:57,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 958 transitions. [2021-03-11 02:32:57,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 63.86666666666667) internal successors, (958), 15 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 75.0) internal successors, (1200), 16 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,856 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 75.0) internal successors, (1200), 16 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,856 INFO L185 Difference]: Start difference. First operand has 124 places, 87 transitions, 566 flow. Second operand 15 states and 958 transitions. [2021-03-11 02:32:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 103 transitions, 786 flow [2021-03-11 02:32:57,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 103 transitions, 727 flow, removed 14 selfloop flow, removed 11 redundant places. [2021-03-11 02:32:57,863 INFO L241 Difference]: Finished difference. Result has 130 places, 83 transitions, 526 flow [2021-03-11 02:32:57,863 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=526, PETRI_PLACES=130, PETRI_TRANSITIONS=83} [2021-03-11 02:32:57,863 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 61 predicate places. [2021-03-11 02:32:57,863 INFO L480 AbstractCegarLoop]: Abstraction has has 130 places, 83 transitions, 526 flow [2021-03-11 02:32:57,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 62.125) internal successors, (497), 8 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,863 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:32:57,864 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:32:57,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:32:57,864 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:32:57,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:32:57,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1400496253, now seen corresponding path program 1 times [2021-03-11 02:32:57,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:32:57,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692888120] [2021-03-11 02:32:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:32:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:32:57,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:32:57,911 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 02:32:57,912 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 02:32:57,921 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:32:57,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:32:57,937 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:57,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:32:57,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:32:57,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:32:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 02:32:57,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692888120] [2021-03-11 02:32:57,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:32:57,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:32:57,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255920379] [2021-03-11 02:32:57,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:32:57,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:32:57,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:32:57,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:32:57,954 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 75 [2021-03-11 02:32:57,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 83 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:57,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:32:57,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 75 [2021-03-11 02:32:57,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:32:58,014 INFO L129 PetriNetUnfolder]: 20/184 cut-off events. [2021-03-11 02:32:58,014 INFO L130 PetriNetUnfolder]: For 497/520 co-relation queries the response was YES. [2021-03-11 02:32:58,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 184 events. 20/184 cut-off events. For 497/520 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 897 event pairs, 0 based on Foata normal form. 2/179 useless extension candidates. Maximal degree in co-relation 590. Up to 39 conditions per place. [2021-03-11 02:32:58,015 INFO L132 encePairwiseOnDemand]: 66/75 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2021-03-11 02:32:58,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 82 transitions, 573 flow [2021-03-11 02:32:58,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-11 02:32:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-11 02:32:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 465 transitions. [2021-03-11 02:32:58,016 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.775 [2021-03-11 02:32:58,016 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 465 transitions. [2021-03-11 02:32:58,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 465 transitions. [2021-03-11 02:32:58,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:32:58,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 465 transitions. [2021-03-11 02:32:58,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.125) internal successors, (465), 8 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 02:32:58,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:58,018 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 75.0) internal successors, (675), 9 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:58,018 INFO L185 Difference]: Start difference. First operand has 130 places, 83 transitions, 526 flow. Second operand 8 states and 465 transitions. [2021-03-11 02:32:58,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 82 transitions, 573 flow [2021-03-11 02:32:58,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 82 transitions, 465 flow, removed 21 selfloop flow, removed 18 redundant places. [2021-03-11 02:32:58,021 INFO L241 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2021-03-11 02:32:58,021 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2021-03-11 02:32:58,021 INFO L335 CegarLoopForPetriNet]: 69 programPoint places, 44 predicate places. [2021-03-11 02:32:58,021 INFO L480 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2021-03-11 02:32:58,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:32:58,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:32:58,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:32:58 BasicIcfg [2021-03-11 02:32:58,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:32:58,026 INFO L168 Benchmark]: Toolchain (without parser) took 3806.84 ms. Allocated memory was 354.4 MB in the beginning and 471.9 MB in the end (delta: 117.4 MB). Free memory was 317.7 MB in the beginning and 416.3 MB in the end (delta: -98.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:58,026 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 354.4 MB. Free memory was 335.9 MB in the beginning and 335.8 MB in the end (delta: 71.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:32:58,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.92 ms. Allocated memory is still 354.4 MB. Free memory was 317.1 MB in the beginning and 317.6 MB in the end (delta: -504.9 kB). Peak memory consumption was 9.6 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:58,026 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.09 ms. Allocated memory is still 354.4 MB. Free memory was 317.6 MB in the beginning and 315.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:58,026 INFO L168 Benchmark]: Boogie Preprocessor took 14.03 ms. Allocated memory is still 354.4 MB. Free memory was 315.4 MB in the beginning and 314.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:32:58,027 INFO L168 Benchmark]: RCFGBuilder took 345.40 ms. Allocated memory is still 354.4 MB. Free memory was 314.1 MB in the beginning and 291.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:32:58,027 INFO L168 Benchmark]: TraceAbstraction took 3014.73 ms. Allocated memory was 354.4 MB in the beginning and 471.9 MB in the end (delta: 117.4 MB). Free memory was 290.3 MB in the beginning and 416.3 MB in the end (delta: -126.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:32:58,028 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 354.4 MB. Free memory was 335.9 MB in the beginning and 335.8 MB in the end (delta: 71.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 400.92 ms. Allocated memory is still 354.4 MB. Free memory was 317.1 MB in the beginning and 317.6 MB in the end (delta: -504.9 kB). Peak memory consumption was 9.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.09 ms. Allocated memory is still 354.4 MB. Free memory was 317.6 MB in the beginning and 315.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.03 ms. Allocated memory is still 354.4 MB. Free memory was 315.4 MB in the beginning and 314.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 345.40 ms. Allocated memory is still 354.4 MB. Free memory was 314.1 MB in the beginning and 291.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3014.73 ms. Allocated memory was 354.4 MB in the beginning and 471.9 MB in the end (delta: 117.4 MB). Free memory was 290.3 MB in the beginning and 416.3 MB in the end (delta: -126.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2921.1ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1842.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 60.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 141 SDtfs, 377 SDslu, 516 SDs, 0 SdLazy, 492 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 294.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1089.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred in iteration=7, InterpolantAutomatonStates: 117, 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: 19.5ms SsaConstructionTime, 131.0ms SatisfiabilityAnalysisTime, 724.8ms InterpolantComputationTime, 417 NumberOfCodeBlocks, 417 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 408 ConstructedInterpolants, 0 QuantifiedInterpolants, 1910 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...