/usr/bin/java -Xmx8000000000 -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/safe026_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 07:33:55,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 07:33:55,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 07:33:55,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 07:33:55,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 07:33:55,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 07:33:55,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 07:33:55,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 07:33:55,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 07:33:55,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 07:33:55,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 07:33:55,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 07:33:55,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 07:33:55,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 07:33:55,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 07:33:55,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 07:33:55,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 07:33:55,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 07:33:55,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 07:33:55,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 07:33:55,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 07:33:55,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 07:33:55,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 07:33:55,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 07:33:55,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-13 07:33:55,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 07:33:55,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 07:33:55,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 07:33:55,871 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 [2021-06-13 07:33:55,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 07:33:55,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 07:33:55,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 07:33:55,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 07:33:55,897 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 07:33:55,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 07:33:55,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 07:33:55,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 07:33:55,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 07:33:55,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 07:33:55,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 07:33:55,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 07:33:55,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 07:33:55,899 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 07:33:55,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 07:33:55,899 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 07:33:55,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 07:33:55,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 07:33:55,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 07:33:55,899 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 07:33:55,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 07:33:55,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 07:33:55,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 07:33:55,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 07:33:55,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 07:33:55,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 07:33:55,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 07:33:55,900 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 07:33:55,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 07:33:55,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 07:33:56,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 07:33:56,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 07:33:56,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 07:33:56,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 07:33:56,167 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 07:33:56,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-06-13 07:33:56,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f997b5d7/8053a38a6ed641db96fa67d197b651c8/FLAGd5a506019 [2021-06-13 07:33:56,626 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 07:33:56,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i [2021-06-13 07:33:56,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f997b5d7/8053a38a6ed641db96fa67d197b651c8/FLAGd5a506019 [2021-06-13 07:33:56,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f997b5d7/8053a38a6ed641db96fa67d197b651c8 [2021-06-13 07:33:56,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 07:33:56,646 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 07:33:56,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 07:33:56,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 07:33:56,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 07:33:56,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:56,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709e88ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56, skipping insertion in model container [2021-06-13 07:33:56,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:56,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 07:33:56,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 07:33:56,782 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i[950,963] [2021-06-13 07:33:56,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:33:56,891 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 07:33:56,900 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.oepc.i[950,963] [2021-06-13 07:33:56,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 07:33:56,979 INFO L208 MainTranslator]: Completed translation [2021-06-13 07:33:56,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56 WrapperNode [2021-06-13 07:33:56,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 07:33:56,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 07:33:56,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 07:33:56,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 07:33:56,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 07:33:57,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 07:33:57,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 07:33:57,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 07:33:57,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (1/1) ... [2021-06-13 07:33:57,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 07:33:57,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 07:33:57,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 07:33:57,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 07:33:57,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (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 [2021-06-13 07:33:57,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 07:33:57,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 07:33:57,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 07:33:57,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 07:33:57,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-13 07:33:57,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-13 07:33:57,106 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-13 07:33:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-13 07:33:57,107 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-13 07:33:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-13 07:33:57,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 07:33:57,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 07:33:57,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 07:33:57,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 07:33:57,108 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 07:33:57,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 07:33:57,374 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-13 07:33:57,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:33:57 BoogieIcfgContainer [2021-06-13 07:33:57,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 07:33:57,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 07:33:57,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 07:33:57,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 07:33:57,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 07:33:56" (1/3) ... [2021-06-13 07:33:57,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6a5c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:33:57, skipping insertion in model container [2021-06-13 07:33:57,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 07:33:56" (2/3) ... [2021-06-13 07:33:57,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6a5c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 07:33:57, skipping insertion in model container [2021-06-13 07:33:57,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 07:33:57" (3/3) ... [2021-06-13 07:33:57,383 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2021-06-13 07:33:57,388 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 07:33:57,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-13 07:33:57,389 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 07:33:57,415 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,416 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,416 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,416 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,416 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,416 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,417 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,417 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,418 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,418 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,418 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,418 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,418 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,419 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,420 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,420 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,422 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,423 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,423 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,426 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,426 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,426 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,427 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,428 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,428 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,428 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,429 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,435 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,435 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 07:33:57,437 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-13 07:33:57,453 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-13 07:33:57,473 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 07:33:57,474 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 07:33:57,474 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 07:33:57,474 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 07:33:57,474 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 07:33:57,474 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 07:33:57,474 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 07:33:57,474 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 07:33:57,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:33:57,525 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2021-06-13 07:33:57,525 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:33:57,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 79 events. 2/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-06-13 07:33:57,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 179 flow [2021-06-13 07:33:57,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 67 transitions, 143 flow [2021-06-13 07:33:57,551 INFO L129 PetriNetUnfolder]: 1/66 cut-off events. [2021-06-13 07:33:57,551 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:33:57,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:57,552 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] [2021-06-13 07:33:57,552 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:57,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:57,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1683349452, now seen corresponding path program 1 times [2021-06-13 07:33:57,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:57,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606976034] [2021-06-13 07:33:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:57,812 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:57,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:57,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:57,829 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:33:57,830 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:33:57,843 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:57,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:57,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:57,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:57,899 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:57,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:33:57,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:57,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606976034] [2021-06-13 07:33:57,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606976034] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:57,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:57,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:57,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886729505] [2021-06-13 07:33:57,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:57,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:57,922 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-06-13 07:33:57,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-06-13 07:33:57,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:57,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-06-13 07:33:57,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:58,223 INFO L129 PetriNetUnfolder]: 173/484 cut-off events. [2021-06-13 07:33:58,223 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 07:33:58,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 484 events. 173/484 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2617 event pairs, 21 based on Foata normal form. 21/489 useless extension candidates. Maximal degree in co-relation 779. Up to 117 conditions per place. [2021-06-13 07:33:58,229 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 5 changer transitions 35/109 dead transitions. [2021-06-13 07:33:58,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 339 flow [2021-06-13 07:33:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:33:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:33:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 907 transitions. [2021-06-13 07:33:58,242 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.850844277673546 [2021-06-13 07:33:58,243 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 907 transitions. [2021-06-13 07:33:58,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 907 transitions. [2021-06-13 07:33:58,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:58,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 907 transitions. [2021-06-13 07:33:58,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.76923076923077) internal successors, (907), 13 states have internal predecessors, (907), 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) [2021-06-13 07:33:58,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:33:58,256 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:33:58,257 INFO L185 Difference]: Start difference. First operand has 76 places, 67 transitions, 143 flow. Second operand 13 states and 907 transitions. [2021-06-13 07:33:58,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 339 flow [2021-06-13 07:33:58,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-06-13 07:33:58,262 INFO L241 Difference]: Finished difference. Result has 97 places, 69 transitions, 210 flow [2021-06-13 07:33:58,264 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=210, PETRI_PLACES=97, PETRI_TRANSITIONS=69} [2021-06-13 07:33:58,264 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 21 predicate places. [2021-06-13 07:33:58,264 INFO L482 AbstractCegarLoop]: Abstraction has has 97 places, 69 transitions, 210 flow [2021-06-13 07:33:58,264 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.28571428571429) internal successors, (464), 7 states have internal predecessors, (464), 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) [2021-06-13 07:33:58,264 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:58,265 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:33:58,265 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 07:33:58,265 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:58,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1410993197, now seen corresponding path program 1 times [2021-06-13 07:33:58,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:58,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211126392] [2021-06-13 07:33:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:58,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:58,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:58,329 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:33:58,331 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:33:58,338 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:58,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:58,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:58,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:58,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:33:58,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:58,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211126392] [2021-06-13 07:33:58,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211126392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:58,369 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:58,369 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:58,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697406507] [2021-06-13 07:33:58,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:58,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:58,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:58,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:58,371 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 82 [2021-06-13 07:33:58,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 69 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:33:58,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:58,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 82 [2021-06-13 07:33:58,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:58,560 INFO L129 PetriNetUnfolder]: 94/349 cut-off events. [2021-06-13 07:33:58,561 INFO L130 PetriNetUnfolder]: For 769/882 co-relation queries the response was YES. [2021-06-13 07:33:58,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 349 events. 94/349 cut-off events. For 769/882 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1760 event pairs, 15 based on Foata normal form. 12/353 useless extension candidates. Maximal degree in co-relation 1044. Up to 93 conditions per place. [2021-06-13 07:33:58,563 INFO L132 encePairwiseOnDemand]: 71/82 looper letters, 15 selfloop transitions, 12 changer transitions 34/114 dead transitions. [2021-06-13 07:33:58,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 114 transitions, 668 flow [2021-06-13 07:33:58,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:33:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:33:58,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 906 transitions. [2021-06-13 07:33:58,565 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.849906191369606 [2021-06-13 07:33:58,565 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 906 transitions. [2021-06-13 07:33:58,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 906 transitions. [2021-06-13 07:33:58,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:58,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 906 transitions. [2021-06-13 07:33:58,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.6923076923077) internal successors, (906), 13 states have internal predecessors, (906), 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) [2021-06-13 07:33:58,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:33:58,568 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:33:58,568 INFO L185 Difference]: Start difference. First operand has 97 places, 69 transitions, 210 flow. Second operand 13 states and 906 transitions. [2021-06-13 07:33:58,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 114 transitions, 668 flow [2021-06-13 07:33:58,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 114 transitions, 616 flow, removed 24 selfloop flow, removed 4 redundant places. [2021-06-13 07:33:58,576 INFO L241 Difference]: Finished difference. Result has 107 places, 74 transitions, 299 flow [2021-06-13 07:33:58,577 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=299, PETRI_PLACES=107, PETRI_TRANSITIONS=74} [2021-06-13 07:33:58,577 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 31 predicate places. [2021-06-13 07:33:58,577 INFO L482 AbstractCegarLoop]: Abstraction has has 107 places, 74 transitions, 299 flow [2021-06-13 07:33:58,578 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:33:58,578 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:58,578 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:33:58,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 07:33:58,578 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:58,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:58,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1056138804, now seen corresponding path program 1 times [2021-06-13 07:33:58,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:58,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289338002] [2021-06-13 07:33:58,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:58,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:58,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:58,636 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:33:58,638 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:33:58,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:33:58,674 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:33:58,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:58,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:58,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:33:58,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:58,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289338002] [2021-06-13 07:33:58,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289338002] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:58,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:58,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-13 07:33:58,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989933082] [2021-06-13 07:33:58,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-13 07:33:58,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-13 07:33:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-13 07:33:58,688 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:33:58,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 74 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-06-13 07:33:58,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:58,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:33:58,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:58,876 INFO L129 PetriNetUnfolder]: 387/956 cut-off events. [2021-06-13 07:33:58,876 INFO L130 PetriNetUnfolder]: For 789/812 co-relation queries the response was YES. [2021-06-13 07:33:58,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 956 events. 387/956 cut-off events. For 789/812 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6934 event pairs, 25 based on Foata normal form. 0/851 useless extension candidates. Maximal degree in co-relation 2123. Up to 261 conditions per place. [2021-06-13 07:33:58,885 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 24 selfloop transitions, 17 changer transitions 0/104 dead transitions. [2021-06-13 07:33:58,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 104 transitions, 441 flow [2021-06-13 07:33:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-13 07:33:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-13 07:33:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 723 transitions. [2021-06-13 07:33:58,887 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8817073170731707 [2021-06-13 07:33:58,887 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 723 transitions. [2021-06-13 07:33:58,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 723 transitions. [2021-06-13 07:33:58,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:58,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 723 transitions. [2021-06-13 07:33:58,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.3) internal successors, (723), 10 states have internal predecessors, (723), 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) [2021-06-13 07:33:58,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-06-13 07:33:58,890 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 82.0) internal successors, (902), 11 states have internal predecessors, (902), 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) [2021-06-13 07:33:58,890 INFO L185 Difference]: Start difference. First operand has 107 places, 74 transitions, 299 flow. Second operand 10 states and 723 transitions. [2021-06-13 07:33:58,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 104 transitions, 441 flow [2021-06-13 07:33:58,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 104 transitions, 411 flow, removed 15 selfloop flow, removed 12 redundant places. [2021-06-13 07:33:58,896 INFO L241 Difference]: Finished difference. Result has 101 places, 89 transitions, 389 flow [2021-06-13 07:33:58,896 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=389, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2021-06-13 07:33:58,897 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 25 predicate places. [2021-06-13 07:33:58,897 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 389 flow [2021-06-13 07:33:58,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 69.16666666666667) internal successors, (415), 6 states have internal predecessors, (415), 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) [2021-06-13 07:33:58,897 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:58,897 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:33:58,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 07:33:58,897 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:58,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:58,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1985144626, now seen corresponding path program 1 times [2021-06-13 07:33:58,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:58,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506038331] [2021-06-13 07:33:58,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:58,952 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,953 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:58,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:58,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:58,960 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:33:58,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:33:58,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:33:58,980 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:33:58,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:58,987 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:58,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:33:58,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:58,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506038331] [2021-06-13 07:33:58,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506038331] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:58,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:58,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:58,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215943038] [2021-06-13 07:33:58,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:58,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:58,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:58,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:58,990 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:33:58,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 389 flow. Second operand has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-06-13 07:33:58,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:58,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:33:58,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:59,190 INFO L129 PetriNetUnfolder]: 351/914 cut-off events. [2021-06-13 07:33:59,191 INFO L130 PetriNetUnfolder]: For 2272/2645 co-relation queries the response was YES. [2021-06-13 07:33:59,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 914 events. 351/914 cut-off events. For 2272/2645 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 6948 event pairs, 5 based on Foata normal form. 98/938 useless extension candidates. Maximal degree in co-relation 3182. Up to 361 conditions per place. [2021-06-13 07:33:59,198 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 20 selfloop transitions, 32 changer transitions 9/124 dead transitions. [2021-06-13 07:33:59,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 124 transitions, 735 flow [2021-06-13 07:33:59,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-13 07:33:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-06-13 07:33:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 941 transitions. [2021-06-13 07:33:59,200 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8827392120075047 [2021-06-13 07:33:59,200 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 941 transitions. [2021-06-13 07:33:59,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 941 transitions. [2021-06-13 07:33:59,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:59,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 941 transitions. [2021-06-13 07:33:59,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 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) [2021-06-13 07:33:59,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:33:59,203 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 82.0) internal successors, (1148), 14 states have internal predecessors, (1148), 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) [2021-06-13 07:33:59,203 INFO L185 Difference]: Start difference. First operand has 101 places, 89 transitions, 389 flow. Second operand 13 states and 941 transitions. [2021-06-13 07:33:59,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 124 transitions, 735 flow [2021-06-13 07:33:59,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 124 transitions, 727 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-06-13 07:33:59,208 INFO L241 Difference]: Finished difference. Result has 115 places, 109 transitions, 624 flow [2021-06-13 07:33:59,208 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=624, PETRI_PLACES=115, PETRI_TRANSITIONS=109} [2021-06-13 07:33:59,208 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 39 predicate places. [2021-06-13 07:33:59,208 INFO L482 AbstractCegarLoop]: Abstraction has has 115 places, 109 transitions, 624 flow [2021-06-13 07:33:59,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.14285714285714) internal successors, (484), 7 states have internal predecessors, (484), 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) [2021-06-13 07:33:59,209 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:59,209 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:33:59,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 07:33:59,209 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:59,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:59,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1750570109, now seen corresponding path program 1 times [2021-06-13 07:33:59,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:59,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092824303] [2021-06-13 07:33:59,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:59,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:59,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:59,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:59,262 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:59,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:59,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:59,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,307 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:59,315 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:33:59,316 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:59,316 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092824303] [2021-06-13 07:33:59,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092824303] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:59,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:59,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:59,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311606988] [2021-06-13 07:33:59,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:59,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:59,317 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 82 [2021-06-13 07:33:59,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 109 transitions, 624 flow. Second operand has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 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) [2021-06-13 07:33:59,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:59,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 82 [2021-06-13 07:33:59,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:59,483 INFO L129 PetriNetUnfolder]: 340/1286 cut-off events. [2021-06-13 07:33:59,483 INFO L130 PetriNetUnfolder]: For 3845/4055 co-relation queries the response was YES. [2021-06-13 07:33:59,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4372 conditions, 1286 events. 340/1286 cut-off events. For 3845/4055 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11996 event pairs, 9 based on Foata normal form. 12/1231 useless extension candidates. Maximal degree in co-relation 4316. Up to 381 conditions per place. [2021-06-13 07:33:59,491 INFO L132 encePairwiseOnDemand]: 73/82 looper letters, 10 selfloop transitions, 6 changer transitions 15/122 dead transitions. [2021-06-13 07:33:59,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 122 transitions, 793 flow [2021-06-13 07:33:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-13 07:33:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-13 07:33:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 496 transitions. [2021-06-13 07:33:59,493 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8641114982578397 [2021-06-13 07:33:59,493 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 496 transitions. [2021-06-13 07:33:59,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 496 transitions. [2021-06-13 07:33:59,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:59,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 496 transitions. [2021-06-13 07:33:59,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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) [2021-06-13 07:33:59,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:33:59,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 82.0) internal successors, (656), 8 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 07:33:59,496 INFO L185 Difference]: Start difference. First operand has 115 places, 109 transitions, 624 flow. Second operand 7 states and 496 transitions. [2021-06-13 07:33:59,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 122 transitions, 793 flow [2021-06-13 07:33:59,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 679 flow, removed 44 selfloop flow, removed 6 redundant places. [2021-06-13 07:33:59,526 INFO L241 Difference]: Finished difference. Result has 119 places, 107 transitions, 518 flow [2021-06-13 07:33:59,526 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=518, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2021-06-13 07:33:59,526 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 43 predicate places. [2021-06-13 07:33:59,527 INFO L482 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 518 flow [2021-06-13 07:33:59,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 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) [2021-06-13 07:33:59,527 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:59,527 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:33:59,527 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 07:33:59,528 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:59,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1003340803, now seen corresponding path program 2 times [2021-06-13 07:33:59,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:59,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457495414] [2021-06-13 07:33:59,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:59,588 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,589 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:59,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:59,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:59,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:59,602 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-13 07:33:59,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-13 07:33:59,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-13 07:33:59,623 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-13 07:33:59,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:59,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,630 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:33:59,632 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:59,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457495414] [2021-06-13 07:33:59,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457495414] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:59,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:59,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:33:59,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380565913] [2021-06-13 07:33:59,632 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:33:59,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:59,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:33:59,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:33:59,636 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 82 [2021-06-13 07:33:59,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 518 flow. Second operand has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-06-13 07:33:59,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:59,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 82 [2021-06-13 07:33:59,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:33:59,882 INFO L129 PetriNetUnfolder]: 245/722 cut-off events. [2021-06-13 07:33:59,882 INFO L130 PetriNetUnfolder]: For 994/1367 co-relation queries the response was YES. [2021-06-13 07:33:59,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 722 events. 245/722 cut-off events. For 994/1367 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 5455 event pairs, 0 based on Foata normal form. 105/767 useless extension candidates. Maximal degree in co-relation 2255. Up to 126 conditions per place. [2021-06-13 07:33:59,886 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 16 selfloop transitions, 36 changer transitions 20/133 dead transitions. [2021-06-13 07:33:59,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 804 flow [2021-06-13 07:33:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-13 07:33:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-06-13 07:33:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1144 transitions. [2021-06-13 07:33:59,888 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8719512195121951 [2021-06-13 07:33:59,888 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1144 transitions. [2021-06-13 07:33:59,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1144 transitions. [2021-06-13 07:33:59,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:33:59,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1144 transitions. [2021-06-13 07:33:59,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.5) internal successors, (1144), 16 states have internal predecessors, (1144), 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) [2021-06-13 07:33:59,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-06-13 07:33:59,892 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 82.0) internal successors, (1394), 17 states have internal predecessors, (1394), 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) [2021-06-13 07:33:59,892 INFO L185 Difference]: Start difference. First operand has 119 places, 107 transitions, 518 flow. Second operand 16 states and 1144 transitions. [2021-06-13 07:33:59,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 804 flow [2021-06-13 07:33:59,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 757 flow, removed 16 selfloop flow, removed 7 redundant places. [2021-06-13 07:33:59,897 INFO L241 Difference]: Finished difference. Result has 131 places, 107 transitions, 589 flow [2021-06-13 07:33:59,897 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=589, PETRI_PLACES=131, PETRI_TRANSITIONS=107} [2021-06-13 07:33:59,897 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 55 predicate places. [2021-06-13 07:33:59,897 INFO L482 AbstractCegarLoop]: Abstraction has has 131 places, 107 transitions, 589 flow [2021-06-13 07:33:59,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 69.125) internal successors, (553), 8 states have internal predecessors, (553), 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) [2021-06-13 07:33:59,897 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:33:59,897 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:33:59,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 07:33:59,898 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:33:59,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:33:59,898 INFO L82 PathProgramCache]: Analyzing trace with hash -106830617, now seen corresponding path program 1 times [2021-06-13 07:33:59,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:33:59,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674685620] [2021-06-13 07:33:59,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:33:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:33:59,925 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,932 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:59,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,933 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:33:59,936 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:33:59,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:33:59,941 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:33:59,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:33:59,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:59,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:33:59,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:33:59,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:33:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:33:59,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:33:59,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674685620] [2021-06-13 07:33:59,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674685620] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:33:59,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:33:59,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-13 07:33:59,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221497962] [2021-06-13 07:33:59,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-13 07:33:59,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:33:59,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-13 07:33:59,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-13 07:33:59,972 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-06-13 07:33:59,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 107 transitions, 589 flow. Second operand has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2021-06-13 07:33:59,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:33:59,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-06-13 07:33:59,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:00,093 INFO L129 PetriNetUnfolder]: 180/743 cut-off events. [2021-06-13 07:34:00,094 INFO L130 PetriNetUnfolder]: For 1710/1819 co-relation queries the response was YES. [2021-06-13 07:34:00,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 743 events. 180/743 cut-off events. For 1710/1819 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6176 event pairs, 0 based on Foata normal form. 7/701 useless extension candidates. Maximal degree in co-relation 2212. Up to 99 conditions per place. [2021-06-13 07:34:00,098 INFO L132 encePairwiseOnDemand]: 70/82 looper letters, 8 selfloop transitions, 7 changer transitions 46/117 dead transitions. [2021-06-13 07:34:00,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 117 transitions, 706 flow [2021-06-13 07:34:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-13 07:34:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-13 07:34:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 532 transitions. [2021-06-13 07:34:00,099 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8109756097560976 [2021-06-13 07:34:00,099 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 532 transitions. [2021-06-13 07:34:00,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 532 transitions. [2021-06-13 07:34:00,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:00,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 532 transitions. [2021-06-13 07:34:00,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 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) [2021-06-13 07:34:00,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2021-06-13 07:34:00,101 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 82.0) internal successors, (738), 9 states have internal predecessors, (738), 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) [2021-06-13 07:34:00,101 INFO L185 Difference]: Start difference. First operand has 131 places, 107 transitions, 589 flow. Second operand 8 states and 532 transitions. [2021-06-13 07:34:00,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 117 transitions, 706 flow [2021-06-13 07:34:00,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 117 transitions, 625 flow, removed 16 selfloop flow, removed 14 redundant places. [2021-06-13 07:34:00,109 INFO L241 Difference]: Finished difference. Result has 125 places, 71 transitions, 282 flow [2021-06-13 07:34:00,109 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=282, PETRI_PLACES=125, PETRI_TRANSITIONS=71} [2021-06-13 07:34:00,109 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 49 predicate places. [2021-06-13 07:34:00,109 INFO L482 AbstractCegarLoop]: Abstraction has has 125 places, 71 transitions, 282 flow [2021-06-13 07:34:00,109 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 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) [2021-06-13 07:34:00,109 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 07:34:00,109 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 07:34:00,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 07:34:00,109 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 07:34:00,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 07:34:00,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1651882897, now seen corresponding path program 2 times [2021-06-13 07:34:00,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 07:34:00,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055247708] [2021-06-13 07:34:00,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 07:34:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 07:34:00,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:00,134 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:00,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:00,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:00,137 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:00,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 07:34:00,140 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-06-13 07:34:00,142 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-13 07:34:00,148 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-13 07:34:00,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-13 07:34:00,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:00,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:00,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:00,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-13 07:34:00,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 07:34:00,174 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 07:34:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 07:34:00,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 07:34:00,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055247708] [2021-06-13 07:34:00,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055247708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 07:34:00,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 07:34:00,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-13 07:34:00,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510402062] [2021-06-13 07:34:00,175 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-13 07:34:00,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 07:34:00,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-13 07:34:00,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-13 07:34:00,176 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 82 [2021-06-13 07:34:00,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 71 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 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) [2021-06-13 07:34:00,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 07:34:00,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 82 [2021-06-13 07:34:00,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 07:34:00,237 INFO L129 PetriNetUnfolder]: 5/80 cut-off events. [2021-06-13 07:34:00,237 INFO L130 PetriNetUnfolder]: For 76/78 co-relation queries the response was YES. [2021-06-13 07:34:00,238 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 80 events. 5/80 cut-off events. For 76/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 81 event pairs, 0 based on Foata normal form. 2/81 useless extension candidates. Maximal degree in co-relation 171. Up to 9 conditions per place. [2021-06-13 07:34:00,238 INFO L132 encePairwiseOnDemand]: 72/82 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2021-06-13 07:34:00,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 69 transitions, 304 flow [2021-06-13 07:34:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-13 07:34:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-13 07:34:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 582 transitions. [2021-06-13 07:34:00,239 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7886178861788617 [2021-06-13 07:34:00,239 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 582 transitions. [2021-06-13 07:34:00,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 582 transitions. [2021-06-13 07:34:00,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 07:34:00,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 582 transitions. [2021-06-13 07:34:00,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 64.66666666666667) internal successors, (582), 9 states have internal predecessors, (582), 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) [2021-06-13 07:34:00,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-06-13 07:34:00,241 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 82.0) internal successors, (820), 10 states have internal predecessors, (820), 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) [2021-06-13 07:34:00,241 INFO L185 Difference]: Start difference. First operand has 125 places, 71 transitions, 282 flow. Second operand 9 states and 582 transitions. [2021-06-13 07:34:00,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 69 transitions, 304 flow [2021-06-13 07:34:00,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 69 transitions, 206 flow, removed 17 selfloop flow, removed 28 redundant places. [2021-06-13 07:34:00,242 INFO L241 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2021-06-13 07:34:00,243 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2021-06-13 07:34:00,243 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 10 predicate places. [2021-06-13 07:34:00,243 INFO L482 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2021-06-13 07:34:00,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 64.875) internal successors, (519), 8 states have internal predecessors, (519), 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) [2021-06-13 07:34:00,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 07:34:00,245 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 07:34:00,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 07:34:00 BasicIcfg [2021-06-13 07:34:00,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 07:34:00,247 INFO L168 Benchmark]: Toolchain (without parser) took 3600.73 ms. Allocated memory was 200.3 MB in the beginning and 294.6 MB in the end (delta: 94.4 MB). Free memory was 162.6 MB in the beginning and 134.5 MB in the end (delta: 28.1 MB). Peak memory consumption was 123.0 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:00,247 INFO L168 Benchmark]: CDTParser took 0.08 ms. Allocated memory is still 200.3 MB. Free memory is still 180.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 07:34:00,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.26 ms. Allocated memory is still 200.3 MB. Free memory was 162.5 MB in the beginning and 161.6 MB in the end (delta: 889.3 kB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:00,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.54 ms. Allocated memory is still 200.3 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:00,248 INFO L168 Benchmark]: Boogie Preprocessor took 28.04 ms. Allocated memory is still 200.3 MB. Free memory was 159.5 MB in the beginning and 157.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:00,248 INFO L168 Benchmark]: RCFGBuilder took 323.44 ms. Allocated memory is still 200.3 MB. Free memory was 157.9 MB in the beginning and 134.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:00,248 INFO L168 Benchmark]: TraceAbstraction took 2867.76 ms. Allocated memory was 200.3 MB in the beginning and 294.6 MB in the end (delta: 94.4 MB). Free memory was 133.8 MB in the beginning and 134.5 MB in the end (delta: -745.6 kB). Peak memory consumption was 94.2 MB. Max. memory is 8.0 GB. [2021-06-13 07:34:00,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08 ms. Allocated memory is still 200.3 MB. Free memory is still 180.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 333.26 ms. Allocated memory is still 200.3 MB. Free memory was 162.5 MB in the beginning and 161.6 MB in the end (delta: 889.3 kB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.54 ms. Allocated memory is still 200.3 MB. Free memory was 161.6 MB in the beginning and 159.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.04 ms. Allocated memory is still 200.3 MB. Free memory was 159.5 MB in the beginning and 157.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 323.44 ms. Allocated memory is still 200.3 MB. Free memory was 157.9 MB in the beginning and 134.3 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2867.76 ms. Allocated memory was 200.3 MB in the beginning and 294.6 MB in the end (delta: 94.4 MB). Free memory was 133.8 MB in the beginning and 134.5 MB in the end (delta: -745.6 kB). Peak memory consumption was 94.2 MB. Max. memory is 8.0 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 18.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2773.3ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1664.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 58.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 101 SDtfs, 257 SDslu, 329 SDs, 0 SdLazy, 372 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 241.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 887.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=624occurred in iteration=4, InterpolantAutomatonStates: 89, 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: 29.3ms SsaConstructionTime, 166.0ms SatisfiabilityAnalysisTime, 702.7ms InterpolantComputationTime, 431 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 423 ConstructedInterpolants, 0 QuantifiedInterpolants, 1741 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...