/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/safe030_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 02:37:23,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 02:37:23,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 02:37:23,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 02:37:23,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 02:37:23,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 02:37:23,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 02:37:23,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 02:37:23,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 02:37:23,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 02:37:23,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 02:37:23,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 02:37:23,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 02:37:23,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 02:37:23,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 02:37:23,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 02:37:23,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 02:37:23,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 02:37:23,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 02:37:23,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 02:37:23,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-03-11 02:37:23,144 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 02:37:23,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 02:37:23,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 02:37:23,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 02:37:23,147 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 02:37:23,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 02:37:23,147 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 02:37:23,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 02:37:23,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 02:37:23,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 02:37:23,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 02:37:23,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 02:37:23,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 02:37:23,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 02:37:23,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 02:37:23,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 02:37:23,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 02:37:23,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 02:37:23,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 02:37:23,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 02:37:23,150 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 02:37:23,150 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 02:37:23,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 02:37:23,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 02:37:23,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 02:37:23,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 02:37:23,408 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 02:37:23,409 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 02:37:23,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-11 02:37:23,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b10f69d/87ee54547ddc4f568ab98902ba83f9f7/FLAG0f72222f4 [2021-03-11 02:37:23,868 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 02:37:23,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.opt.i [2021-03-11 02:37:23,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b10f69d/87ee54547ddc4f568ab98902ba83f9f7/FLAG0f72222f4 [2021-03-11 02:37:24,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57b10f69d/87ee54547ddc4f568ab98902ba83f9f7 [2021-03-11 02:37:24,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 02:37:24,242 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 02:37:24,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 02:37:24,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 02:37:24,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 02:37:24,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4145add8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24, skipping insertion in model container [2021-03-11 02:37:24,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 02:37:24,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 02:37:24,370 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/safe030_tso.opt.i[949,962] [2021-03-11 02:37:24,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:37:24,452 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 02:37:24,467 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/safe030_tso.opt.i[949,962] [2021-03-11 02:37:24,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 02:37:24,544 INFO L208 MainTranslator]: Completed translation [2021-03-11 02:37:24,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24 WrapperNode [2021-03-11 02:37:24,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 02:37:24,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 02:37:24,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 02:37:24,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 02:37:24,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 02:37:24,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 02:37:24,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 02:37:24,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 02:37:24,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (1/1) ... [2021-03-11 02:37:24,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 02:37:24,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 02:37:24,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 02:37:24,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 02:37:24,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (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 02:37:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 02:37:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 02:37:24,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 02:37:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 02:37:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 02:37:24,669 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 02:37:24,669 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 02:37:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 02:37:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 02:37:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 02:37:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 02:37:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 02:37:24,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 02:37:24,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 02:37:24,672 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 02:37:24,938 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 02:37:24,938 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 02:37:24,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:37:24 BoogieIcfgContainer [2021-03-11 02:37:24,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 02:37:24,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 02:37:24,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 02:37:24,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 02:37:24,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 02:37:24" (1/3) ... [2021-03-11 02:37:24,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c738f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:37:24, skipping insertion in model container [2021-03-11 02:37:24,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 02:37:24" (2/3) ... [2021-03-11 02:37:24,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c738f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 02:37:24, skipping insertion in model container [2021-03-11 02:37:24,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 02:37:24" (3/3) ... [2021-03-11 02:37:24,944 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2021-03-11 02:37:24,948 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 02:37:24,951 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 02:37:24,951 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 02:37:24,973 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,973 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,973 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,974 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,974 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,974 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,976 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,976 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,976 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,976 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,976 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,976 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,977 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,977 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,977 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,978 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,978 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,978 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,979 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,979 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,980 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,980 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,980 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,980 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,981 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,983 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,983 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,983 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,987 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,987 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,989 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,989 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 02:37:24,992 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 02:37:25,004 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 02:37:25,020 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 02:37:25,020 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 02:37:25,020 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 02:37:25,020 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 02:37:25,020 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 02:37:25,021 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 02:37:25,021 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 02:37:25,021 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 02:37:25,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 02:37:25,050 INFO L129 PetriNetUnfolder]: 2/70 cut-off events. [2021-03-11 02:37:25,050 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:37:25,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 02:37:25,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 73 transitions, 161 flow [2021-03-11 02:37:25,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 58 transitions, 125 flow [2021-03-11 02:37:25,066 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2021-03-11 02:37:25,066 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:37:25,066 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:25,067 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] [2021-03-11 02:37:25,067 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:25,071 INFO L82 PathProgramCache]: Analyzing trace with hash -98054960, now seen corresponding path program 1 times [2021-03-11 02:37:25,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:25,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714719271] [2021-03-11 02:37:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:25,239 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,240 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:25,245 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:37:25,246 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:25,259 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:25,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:25,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:25,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:25,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,310 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:25,312 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 02:37:25,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714719271] [2021-03-11 02:37:25,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:25,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:37:25,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405119509] [2021-03-11 02:37:25,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:37:25,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:25,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:37:25,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:37:25,329 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:37:25,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 125 flow. Second operand has 6 states, 6 states have (on average 55.5) internal successors, (333), 6 states have internal predecessors, (333), 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 02:37:25,332 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:25,332 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:37:25,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:25,660 INFO L129 PetriNetUnfolder]: 659/1440 cut-off events. [2021-03-11 02:37:25,661 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 02:37:25,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 1440 events. 659/1440 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9595 event pairs, 119 based on Foata normal form. 54/1460 useless extension candidates. Maximal degree in co-relation 2469. Up to 331 conditions per place. [2021-03-11 02:37:25,675 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 18 selfloop transitions, 7 changer transitions 43/110 dead transitions. [2021-03-11 02:37:25,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 365 flow [2021-03-11 02:37:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 02:37:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 02:37:25,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2021-03-11 02:37:25,690 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8493150684931506 [2021-03-11 02:37:25,690 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2021-03-11 02:37:25,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2021-03-11 02:37:25,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:25,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2021-03-11 02:37:25,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 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 02:37:25,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 02:37:25,704 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 73.0) internal successors, (730), 10 states have internal predecessors, (730), 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 02:37:25,705 INFO L185 Difference]: Start difference. First operand has 67 places, 58 transitions, 125 flow. Second operand 9 states and 558 transitions. [2021-03-11 02:37:25,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 365 flow [2021-03-11 02:37:25,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 110 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 02:37:25,713 INFO L241 Difference]: Finished difference. Result has 80 places, 63 transitions, 222 flow [2021-03-11 02:37:25,714 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=222, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2021-03-11 02:37:25,714 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2021-03-11 02:37:25,715 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 222 flow [2021-03-11 02:37:25,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 55.5) internal successors, (333), 6 states have internal predecessors, (333), 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 02:37:25,715 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:25,715 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 02:37:25,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 02:37:25,715 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:25,716 INFO L82 PathProgramCache]: Analyzing trace with hash 2106252881, now seen corresponding path program 1 times [2021-03-11 02:37:25,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:25,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107204542] [2021-03-11 02:37:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:25,794 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:25,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,796 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:25,802 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:37:25,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:25,814 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:25,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:25,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:25,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:25,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:25,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:25,849 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 02:37:25,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107204542] [2021-03-11 02:37:25,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:25,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:25,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865657796] [2021-03-11 02:37:25,850 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:25,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:25,852 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:37:25,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 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 02:37:25,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:25,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:37:25,852 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:26,212 INFO L129 PetriNetUnfolder]: 509/1328 cut-off events. [2021-03-11 02:37:26,213 INFO L130 PetriNetUnfolder]: For 2326/2794 co-relation queries the response was YES. [2021-03-11 02:37:26,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4190 conditions, 1328 events. 509/1328 cut-off events. For 2326/2794 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9594 event pairs, 32 based on Foata normal form. 38/1348 useless extension candidates. Maximal degree in co-relation 4154. Up to 374 conditions per place. [2021-03-11 02:37:26,221 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 23 selfloop transitions, 11 changer transitions 70/146 dead transitions. [2021-03-11 02:37:26,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 146 transitions, 1046 flow [2021-03-11 02:37:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:26,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 796 transitions. [2021-03-11 02:37:26,223 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8387776606954689 [2021-03-11 02:37:26,223 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 796 transitions. [2021-03-11 02:37:26,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 796 transitions. [2021-03-11 02:37:26,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:26,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 796 transitions. [2021-03-11 02:37:26,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.23076923076923) internal successors, (796), 13 states have internal predecessors, (796), 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 02:37:26,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:26,227 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:26,227 INFO L185 Difference]: Start difference. First operand has 80 places, 63 transitions, 222 flow. Second operand 13 states and 796 transitions. [2021-03-11 02:37:26,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 146 transitions, 1046 flow [2021-03-11 02:37:26,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 146 transitions, 962 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 02:37:26,237 INFO L241 Difference]: Finished difference. Result has 96 places, 70 transitions, 352 flow [2021-03-11 02:37:26,237 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=352, PETRI_PLACES=96, PETRI_TRANSITIONS=70} [2021-03-11 02:37:26,238 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 29 predicate places. [2021-03-11 02:37:26,238 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 70 transitions, 352 flow [2021-03-11 02:37:26,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 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 02:37:26,238 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:26,238 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 02:37:26,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 02:37:26,239 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:26,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:26,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1805629231, now seen corresponding path program 1 times [2021-03-11 02:37:26,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:26,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098871608] [2021-03-11 02:37:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:26,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:26,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:26,327 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:37:26,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:26,335 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:26,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:26,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:26,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:26,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:26,365 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 02:37:26,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098871608] [2021-03-11 02:37:26,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:26,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:26,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850361894] [2021-03-11 02:37:26,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:26,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:26,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:26,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:26,367 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:37:26,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 70 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 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 02:37:26,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:26,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:37:26,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:26,613 INFO L129 PetriNetUnfolder]: 378/1005 cut-off events. [2021-03-11 02:37:26,614 INFO L130 PetriNetUnfolder]: For 4993/5633 co-relation queries the response was YES. [2021-03-11 02:37:26,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 1005 events. 378/1005 cut-off events. For 4993/5633 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6730 event pairs, 28 based on Foata normal form. 39/1031 useless extension candidates. Maximal degree in co-relation 4007. Up to 312 conditions per place. [2021-03-11 02:37:26,624 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 25 selfloop transitions, 18 changer transitions 58/143 dead transitions. [2021-03-11 02:37:26,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 143 transitions, 1234 flow [2021-03-11 02:37:26,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 784 transitions. [2021-03-11 02:37:26,628 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8261327713382508 [2021-03-11 02:37:26,628 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 784 transitions. [2021-03-11 02:37:26,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 784 transitions. [2021-03-11 02:37:26,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:26,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 784 transitions. [2021-03-11 02:37:26,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 60.30769230769231) internal successors, (784), 13 states have internal predecessors, (784), 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 02:37:26,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:26,632 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:26,632 INFO L185 Difference]: Start difference. First operand has 96 places, 70 transitions, 352 flow. Second operand 13 states and 784 transitions. [2021-03-11 02:37:26,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 143 transitions, 1234 flow [2021-03-11 02:37:26,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 143 transitions, 1180 flow, removed 27 selfloop flow, removed 0 redundant places. [2021-03-11 02:37:26,644 INFO L241 Difference]: Finished difference. Result has 111 places, 79 transitions, 544 flow [2021-03-11 02:37:26,644 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=544, PETRI_PLACES=111, PETRI_TRANSITIONS=79} [2021-03-11 02:37:26,644 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 44 predicate places. [2021-03-11 02:37:26,644 INFO L480 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 544 flow [2021-03-11 02:37:26,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.42857142857143) internal successors, (388), 7 states have internal predecessors, (388), 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 02:37:26,645 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:26,645 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 02:37:26,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 02:37:26,645 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash 199733680, now seen corresponding path program 1 times [2021-03-11 02:37:26,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:26,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335832106] [2021-03-11 02:37:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:26,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:26,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:26,718 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:37:26,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:26,726 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:26,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:26,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:26,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:26,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:26,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:26,760 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 02:37:26,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335832106] [2021-03-11 02:37:26,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:26,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:26,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015068988] [2021-03-11 02:37:26,760 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:26,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:26,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:26,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:26,762 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:37:26,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 544 flow. Second operand has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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 02:37:26,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:26,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:37:26,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:27,005 INFO L129 PetriNetUnfolder]: 271/810 cut-off events. [2021-03-11 02:37:27,005 INFO L130 PetriNetUnfolder]: For 6605/7340 co-relation queries the response was YES. [2021-03-11 02:37:27,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3786 conditions, 810 events. 271/810 cut-off events. For 6605/7340 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5372 event pairs, 5 based on Foata normal form. 25/826 useless extension candidates. Maximal degree in co-relation 3722. Up to 251 conditions per place. [2021-03-11 02:37:27,013 INFO L132 encePairwiseOnDemand]: 61/73 looper letters, 28 selfloop transitions, 23 changer transitions 46/139 dead transitions. [2021-03-11 02:37:27,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 139 transitions, 1454 flow [2021-03-11 02:37:27,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:27,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 775 transitions. [2021-03-11 02:37:27,015 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8166491043203372 [2021-03-11 02:37:27,015 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 775 transitions. [2021-03-11 02:37:27,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 775 transitions. [2021-03-11 02:37:27,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:27,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 775 transitions. [2021-03-11 02:37:27,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.61538461538461) internal successors, (775), 13 states have internal predecessors, (775), 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 02:37:27,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:27,018 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:27,018 INFO L185 Difference]: Start difference. First operand has 111 places, 79 transitions, 544 flow. Second operand 13 states and 775 transitions. [2021-03-11 02:37:27,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 139 transitions, 1454 flow [2021-03-11 02:37:27,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 139 transitions, 1370 flow, removed 42 selfloop flow, removed 6 redundant places. [2021-03-11 02:37:27,035 INFO L241 Difference]: Finished difference. Result has 120 places, 87 transitions, 732 flow [2021-03-11 02:37:27,036 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=732, PETRI_PLACES=120, PETRI_TRANSITIONS=87} [2021-03-11 02:37:27,036 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 53 predicate places. [2021-03-11 02:37:27,036 INFO L480 AbstractCegarLoop]: Abstraction has has 120 places, 87 transitions, 732 flow [2021-03-11 02:37:27,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.57142857142857) internal successors, (389), 7 states have internal predecessors, (389), 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 02:37:27,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:27,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:27,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 02:37:27,036 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:27,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1879842862, now seen corresponding path program 1 times [2021-03-11 02:37:27,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:27,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781687145] [2021-03-11 02:37:27,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:27,080 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:27,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:27,085 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:37:27,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:27,092 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:27,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:27,106 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,107 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:27,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:27,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:27,127 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 02:37:27,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781687145] [2021-03-11 02:37:27,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:27,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:27,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466687386] [2021-03-11 02:37:27,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:27,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:27,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:27,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:27,128 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:37:27,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 87 transitions, 732 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 02:37:27,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:27,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:37:27,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:27,362 INFO L129 PetriNetUnfolder]: 217/752 cut-off events. [2021-03-11 02:37:27,362 INFO L130 PetriNetUnfolder]: For 8709/9660 co-relation queries the response was YES. [2021-03-11 02:37:27,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 752 events. 217/752 cut-off events. For 8709/9660 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5175 event pairs, 1 based on Foata normal form. 34/779 useless extension candidates. Maximal degree in co-relation 3891. Up to 222 conditions per place. [2021-03-11 02:37:27,369 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 29 selfloop transitions, 26 changer transitions 43/140 dead transitions. [2021-03-11 02:37:27,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 140 transitions, 1734 flow [2021-03-11 02:37:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:27,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:27,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 769 transitions. [2021-03-11 02:37:27,373 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8103266596417281 [2021-03-11 02:37:27,373 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 769 transitions. [2021-03-11 02:37:27,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 769 transitions. [2021-03-11 02:37:27,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:27,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 769 transitions. [2021-03-11 02:37:27,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.15384615384615) internal successors, (769), 13 states have internal predecessors, (769), 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 02:37:27,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:27,378 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:27,378 INFO L185 Difference]: Start difference. First operand has 120 places, 87 transitions, 732 flow. Second operand 13 states and 769 transitions. [2021-03-11 02:37:27,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 140 transitions, 1734 flow [2021-03-11 02:37:27,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 140 transitions, 1642 flow, removed 46 selfloop flow, removed 9 redundant places. [2021-03-11 02:37:27,395 INFO L241 Difference]: Finished difference. Result has 126 places, 87 transitions, 832 flow [2021-03-11 02:37:27,395 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=832, PETRI_PLACES=126, PETRI_TRANSITIONS=87} [2021-03-11 02:37:27,395 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 59 predicate places. [2021-03-11 02:37:27,396 INFO L480 AbstractCegarLoop]: Abstraction has has 126 places, 87 transitions, 832 flow [2021-03-11 02:37:27,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 02:37:27,396 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:27,396 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:27,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 02:37:27,396 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:27,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:27,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1551367394, now seen corresponding path program 1 times [2021-03-11 02:37:27,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:27,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85133983] [2021-03-11 02:37:27,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:27,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:27,443 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:27,447 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:37:27,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:27,453 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:27,455 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:27,467 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:27,473 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:27,482 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,483 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:27,483 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 02:37:27,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85133983] [2021-03-11 02:37:27,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:27,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:27,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233813143] [2021-03-11 02:37:27,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:27,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:27,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:27,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:27,485 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:37:27,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 87 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 02:37:27,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:27,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:37:27,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:27,708 INFO L129 PetriNetUnfolder]: 205/811 cut-off events. [2021-03-11 02:37:27,709 INFO L130 PetriNetUnfolder]: For 11283/12201 co-relation queries the response was YES. [2021-03-11 02:37:27,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4532 conditions, 811 events. 205/811 cut-off events. For 11283/12201 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6044 event pairs, 1 based on Foata normal form. 33/839 useless extension candidates. Maximal degree in co-relation 4490. Up to 228 conditions per place. [2021-03-11 02:37:27,718 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 29 selfloop transitions, 25 changer transitions 47/143 dead transitions. [2021-03-11 02:37:27,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 143 transitions, 2032 flow [2021-03-11 02:37:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 769 transitions. [2021-03-11 02:37:27,720 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8103266596417281 [2021-03-11 02:37:27,720 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 769 transitions. [2021-03-11 02:37:27,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 769 transitions. [2021-03-11 02:37:27,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:27,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 769 transitions. [2021-03-11 02:37:27,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.15384615384615) internal successors, (769), 13 states have internal predecessors, (769), 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 02:37:27,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:27,723 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:27,723 INFO L185 Difference]: Start difference. First operand has 126 places, 87 transitions, 832 flow. Second operand 13 states and 769 transitions. [2021-03-11 02:37:27,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 143 transitions, 2032 flow [2021-03-11 02:37:27,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 143 transitions, 1936 flow, removed 48 selfloop flow, removed 7 redundant places. [2021-03-11 02:37:27,747 INFO L241 Difference]: Finished difference. Result has 134 places, 86 transitions, 934 flow [2021-03-11 02:37:27,748 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=934, PETRI_PLACES=134, PETRI_TRANSITIONS=86} [2021-03-11 02:37:27,748 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 67 predicate places. [2021-03-11 02:37:27,748 INFO L480 AbstractCegarLoop]: Abstraction has has 134 places, 86 transitions, 934 flow [2021-03-11 02:37:27,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 02:37:27,748 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:27,748 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 02:37:27,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 02:37:27,749 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:27,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1578932964, now seen corresponding path program 1 times [2021-03-11 02:37:27,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:27,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917612710] [2021-03-11 02:37:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:27,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,794 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:27,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:27,797 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 02:37:27,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 02:37:27,805 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-03-11 02:37:27,807 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 02:37:27,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:27,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:27,832 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:27,832 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:27,834 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 02:37:27,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917612710] [2021-03-11 02:37:27,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:27,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:27,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629250908] [2021-03-11 02:37:27,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:27,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:27,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:27,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:27,836 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 73 [2021-03-11 02:37:27,836 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 86 transitions, 934 flow. Second operand has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 02:37:27,836 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:27,836 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 73 [2021-03-11 02:37:27,836 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:28,080 INFO L129 PetriNetUnfolder]: 185/869 cut-off events. [2021-03-11 02:37:28,080 INFO L130 PetriNetUnfolder]: For 14498/15380 co-relation queries the response was YES. [2021-03-11 02:37:28,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4971 conditions, 869 events. 185/869 cut-off events. For 14498/15380 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6980 event pairs, 1 based on Foata normal form. 25/890 useless extension candidates. Maximal degree in co-relation 4924. Up to 228 conditions per place. [2021-03-11 02:37:28,089 INFO L132 encePairwiseOnDemand]: 62/73 looper letters, 26 selfloop transitions, 23 changer transitions 51/142 dead transitions. [2021-03-11 02:37:28,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 2252 flow [2021-03-11 02:37:28,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 769 transitions. [2021-03-11 02:37:28,090 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8103266596417281 [2021-03-11 02:37:28,090 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 769 transitions. [2021-03-11 02:37:28,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 769 transitions. [2021-03-11 02:37:28,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:28,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 769 transitions. [2021-03-11 02:37:28,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 59.15384615384615) internal successors, (769), 13 states have internal predecessors, (769), 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 02:37:28,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:28,093 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:28,093 INFO L185 Difference]: Start difference. First operand has 134 places, 86 transitions, 934 flow. Second operand 13 states and 769 transitions. [2021-03-11 02:37:28,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 2252 flow [2021-03-11 02:37:28,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 142 transitions, 2033 flow, removed 91 selfloop flow, removed 10 redundant places. [2021-03-11 02:37:28,118 INFO L241 Difference]: Finished difference. Result has 137 places, 81 transitions, 840 flow [2021-03-11 02:37:28,119 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=840, PETRI_PLACES=137, PETRI_TRANSITIONS=81} [2021-03-11 02:37:28,119 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 70 predicate places. [2021-03-11 02:37:28,119 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 81 transitions, 840 flow [2021-03-11 02:37:28,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 55.714285714285715) internal successors, (390), 7 states have internal predecessors, (390), 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 02:37:28,119 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:28,119 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 02:37:28,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 02:37:28,119 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:28,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:28,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1018522925, now seen corresponding path program 1 times [2021-03-11 02:37:28,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:28,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606032613] [2021-03-11 02:37:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:28,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:28,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:28,158 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:37:28,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:37:28,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:28,177 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:37:28,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:28,185 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:28,185 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 02:37:28,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606032613] [2021-03-11 02:37:28,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:28,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 02:37:28,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299149880] [2021-03-11 02:37:28,186 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 02:37:28,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:28,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 02:37:28,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 02:37:28,187 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:37:28,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 81 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:28,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:28,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:37:28,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:28,512 INFO L129 PetriNetUnfolder]: 1049/2418 cut-off events. [2021-03-11 02:37:28,513 INFO L130 PetriNetUnfolder]: For 4491/4717 co-relation queries the response was YES. [2021-03-11 02:37:28,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5771 conditions, 2418 events. 1049/2418 cut-off events. For 4491/4717 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 21848 event pairs, 28 based on Foata normal form. 1/2151 useless extension candidates. Maximal degree in co-relation 5723. Up to 761 conditions per place. [2021-03-11 02:37:28,536 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 21 selfloop transitions, 17 changer transitions 3/111 dead transitions. [2021-03-11 02:37:28,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 111 transitions, 982 flow [2021-03-11 02:37:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-11 02:37:28,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-11 02:37:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2021-03-11 02:37:28,538 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8671232876712329 [2021-03-11 02:37:28,538 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 633 transitions. [2021-03-11 02:37:28,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 633 transitions. [2021-03-11 02:37:28,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:28,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 633 transitions. [2021-03-11 02:37:28,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.3) internal successors, (633), 10 states have internal predecessors, (633), 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 02:37:28,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 02:37:28,541 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 73.0) internal successors, (803), 11 states have internal predecessors, (803), 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 02:37:28,541 INFO L185 Difference]: Start difference. First operand has 137 places, 81 transitions, 840 flow. Second operand 10 states and 633 transitions. [2021-03-11 02:37:28,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 111 transitions, 982 flow [2021-03-11 02:37:28,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 111 transitions, 873 flow, removed 24 selfloop flow, removed 18 redundant places. [2021-03-11 02:37:28,554 INFO L241 Difference]: Finished difference. Result has 125 places, 97 transitions, 851 flow [2021-03-11 02:37:28,555 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=851, PETRI_PLACES=125, PETRI_TRANSITIONS=97} [2021-03-11 02:37:28,555 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 58 predicate places. [2021-03-11 02:37:28,555 INFO L480 AbstractCegarLoop]: Abstraction has has 125 places, 97 transitions, 851 flow [2021-03-11 02:37:28,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 60.166666666666664) internal successors, (361), 6 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 02:37:28,555 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:28,555 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] [2021-03-11 02:37:28,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 02:37:28,556 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:28,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1283721732, now seen corresponding path program 1 times [2021-03-11 02:37:28,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:28,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939750352] [2021-03-11 02:37:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:28,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:28,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:28,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:28,593 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:37:28,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:37:28,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:28,613 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:37:28,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:28,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:28,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:28,620 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 02:37:28,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939750352] [2021-03-11 02:37:28,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:28,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-11 02:37:28,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595507807] [2021-03-11 02:37:28,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 02:37:28,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:28,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 02:37:28,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-11 02:37:28,623 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:37:28,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 97 transitions, 851 flow. Second operand has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 02:37:28,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:28,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:37:28,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:28,972 INFO L129 PetriNetUnfolder]: 898/2510 cut-off events. [2021-03-11 02:37:28,972 INFO L130 PetriNetUnfolder]: For 6247/7947 co-relation queries the response was YES. [2021-03-11 02:37:28,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8530 conditions, 2510 events. 898/2510 cut-off events. For 6247/7947 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 25639 event pairs, 2 based on Foata normal form. 401/2720 useless extension candidates. Maximal degree in co-relation 8492. Up to 779 conditions per place. [2021-03-11 02:37:28,988 INFO L132 encePairwiseOnDemand]: 63/73 looper letters, 7 selfloop transitions, 9 changer transitions 58/132 dead transitions. [2021-03-11 02:37:28,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 132 transitions, 1171 flow [2021-03-11 02:37:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-11 02:37:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-03-11 02:37:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 823 transitions. [2021-03-11 02:37:28,990 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8672286617492097 [2021-03-11 02:37:28,990 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 823 transitions. [2021-03-11 02:37:28,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 823 transitions. [2021-03-11 02:37:28,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:28,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 823 transitions. [2021-03-11 02:37:28,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.30769230769231) internal successors, (823), 13 states have internal predecessors, (823), 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 02:37:28,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:28,995 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 73.0) internal successors, (1022), 14 states have internal predecessors, (1022), 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 02:37:28,995 INFO L185 Difference]: Start difference. First operand has 125 places, 97 transitions, 851 flow. Second operand 13 states and 823 transitions. [2021-03-11 02:37:28,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 132 transitions, 1171 flow [2021-03-11 02:37:29,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 132 transitions, 1119 flow, removed 25 selfloop flow, removed 6 redundant places. [2021-03-11 02:37:29,011 INFO L241 Difference]: Finished difference. Result has 137 places, 74 transitions, 655 flow [2021-03-11 02:37:29,012 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=655, PETRI_PLACES=137, PETRI_TRANSITIONS=74} [2021-03-11 02:37:29,012 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 70 predicate places. [2021-03-11 02:37:29,012 INFO L480 AbstractCegarLoop]: Abstraction has has 137 places, 74 transitions, 655 flow [2021-03-11 02:37:29,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 60.142857142857146) internal successors, (421), 7 states have internal predecessors, (421), 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 02:37:29,012 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 02:37:29,012 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 02:37:29,012 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 02:37:29,012 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 02:37:29,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 02:37:29,013 INFO L82 PathProgramCache]: Analyzing trace with hash 427984645, now seen corresponding path program 1 times [2021-03-11 02:37:29,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 02:37:29,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196073981] [2021-03-11 02:37:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 02:37:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 02:37:29,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:29,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:29,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:29,048 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:29,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:29,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:29,055 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:29,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 02:37:29,059 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-03-11 02:37:29,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-03-11 02:37:29,072 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:29,073 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 02:37:29,079 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-11 02:37:29,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 02:37:29,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 02:37:29,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 02:37:29,087 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 02:37:29,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196073981] [2021-03-11 02:37:29,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 02:37:29,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-11 02:37:29,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445224040] [2021-03-11 02:37:29,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-11 02:37:29,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 02:37:29,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-11 02:37:29,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-11 02:37:29,090 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 73 [2021-03-11 02:37:29,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 74 transitions, 655 flow. Second operand has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 02:37:29,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 02:37:29,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 73 [2021-03-11 02:37:29,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 02:37:29,215 INFO L129 PetriNetUnfolder]: 45/225 cut-off events. [2021-03-11 02:37:29,215 INFO L130 PetriNetUnfolder]: For 1330/1456 co-relation queries the response was YES. [2021-03-11 02:37:29,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 225 events. 45/225 cut-off events. For 1330/1456 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1092 event pairs, 0 based on Foata normal form. 39/261 useless extension candidates. Maximal degree in co-relation 1034. Up to 76 conditions per place. [2021-03-11 02:37:29,216 INFO L132 encePairwiseOnDemand]: 64/73 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2021-03-11 02:37:29,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 81 transitions, 808 flow [2021-03-11 02:37:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 02:37:29,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 02:37:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 680 transitions. [2021-03-11 02:37:29,218 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8468244084682441 [2021-03-11 02:37:29,218 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 680 transitions. [2021-03-11 02:37:29,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 680 transitions. [2021-03-11 02:37:29,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 02:37:29,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 680 transitions. [2021-03-11 02:37:29,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.81818181818182) internal successors, (680), 11 states have internal predecessors, (680), 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 02:37:29,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 02:37:29,221 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 73.0) internal successors, (876), 12 states have internal predecessors, (876), 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 02:37:29,221 INFO L185 Difference]: Start difference. First operand has 137 places, 74 transitions, 655 flow. Second operand 11 states and 680 transitions. [2021-03-11 02:37:29,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 81 transitions, 808 flow [2021-03-11 02:37:29,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 81 transitions, 599 flow, removed 30 selfloop flow, removed 22 redundant places. [2021-03-11 02:37:29,225 INFO L241 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2021-03-11 02:37:29,226 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2021-03-11 02:37:29,226 INFO L335 CegarLoopForPetriNet]: 67 programPoint places, 39 predicate places. [2021-03-11 02:37:29,226 INFO L480 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2021-03-11 02:37:29,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 60.125) internal successors, (481), 8 states have internal predecessors, (481), 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 02:37:29,226 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 02:37:29,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 02:37:29 BasicIcfg [2021-03-11 02:37:29,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 02:37:29,230 INFO L168 Benchmark]: Toolchain (without parser) took 4991.58 ms. Allocated memory was 383.8 MB in the beginning and 484.4 MB in the end (delta: 100.7 MB). Free memory was 347.3 MB in the beginning and 290.9 MB in the end (delta: 56.3 MB). Peak memory consumption was 158.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:29,232 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 383.8 MB. Free memory was 364.9 MB in the beginning and 364.9 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:37:29,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.42 ms. Allocated memory is still 383.8 MB. Free memory was 346.6 MB in the beginning and 347.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:29,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.97 ms. Allocated memory is still 383.8 MB. Free memory was 347.8 MB in the beginning and 345.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:29,232 INFO L168 Benchmark]: Boogie Preprocessor took 13.61 ms. Allocated memory is still 383.8 MB. Free memory was 345.7 MB in the beginning and 344.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 02:37:29,232 INFO L168 Benchmark]: RCFGBuilder took 354.84 ms. Allocated memory is still 383.8 MB. Free memory was 343.6 MB in the beginning and 321.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:29,234 INFO L168 Benchmark]: TraceAbstraction took 4289.76 ms. Allocated memory was 383.8 MB in the beginning and 484.4 MB in the end (delta: 100.7 MB). Free memory was 321.6 MB in the beginning and 290.9 MB in the end (delta: 30.6 MB). Peak memory consumption was 133.4 MB. Max. memory is 16.0 GB. [2021-03-11 02:37:29,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 383.8 MB. Free memory was 364.9 MB in the beginning and 364.9 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 301.42 ms. Allocated memory is still 383.8 MB. Free memory was 346.6 MB in the beginning and 347.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.97 ms. Allocated memory is still 383.8 MB. Free memory was 347.8 MB in the beginning and 345.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.61 ms. Allocated memory is still 383.8 MB. Free memory was 345.7 MB in the beginning and 344.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 354.84 ms. Allocated memory is still 383.8 MB. Free memory was 343.6 MB in the beginning and 321.6 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4289.76 ms. Allocated memory was 383.8 MB in the beginning and 484.4 MB in the end (delta: 100.7 MB). Free memory was 321.6 MB in the beginning and 290.9 MB in the end (delta: 30.6 MB). Peak memory consumption was 133.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 10.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4211.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 3042.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 248 SDtfs, 400 SDslu, 780 SDs, 0 SdLazy, 470 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 309.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1216.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=934occurred in iteration=6, InterpolantAutomatonStates: 121, 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: 25.7ms SsaConstructionTime, 155.5ms SatisfiabilityAnalysisTime, 798.9ms InterpolantComputationTime, 427 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 1971 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...