/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:25:34,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:25:34,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:25:34,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 20:25:34,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 20:25:34,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 20:25:34,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 20:25:34,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 20:25:34,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 20:25:34,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 20:25:34,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 20:25:34,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 20:25:34,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:25:34,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:25:34,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:25:34,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:25:34,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:25:34,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:25:34,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:25:34,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:25:34,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:25:34,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:25:34,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:25:34,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:25:34,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:25:34,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 20:25:34,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 20:25:34,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 20:25:34,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 20:25:34,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 20:25:34,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 20:25:34,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 20:25:34,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 20:25:34,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:25:34,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:25:34,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:25:34,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 20:25:34,932 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:25:34,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:25:34,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:25:34,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:25:34,935 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:25:34,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:25:34,935 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:25:34,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:25:34,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:25:34,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:25:34,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:25:34,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:25:34,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:25:34,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:25:34,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:25:34,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:25:34,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:25:34,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:25:34,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:25:34,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:25:34,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:25:35,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:25:35,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:25:35,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:25:35,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:25:35,181 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:25:35,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2021-03-11 20:25:35,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaa4d73d/81f5e40afddc48cba2319857dd6ab246/FLAG1808e30be [2021-03-11 20:25:35,794 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:25:35,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i [2021-03-11 20:25:35,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaa4d73d/81f5e40afddc48cba2319857dd6ab246/FLAG1808e30be [2021-03-11 20:25:35,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcaa4d73d/81f5e40afddc48cba2319857dd6ab246 [2021-03-11 20:25:35,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:25:35,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:25:35,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:35,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:25:35,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:25:35,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:35" (1/1) ... [2021-03-11 20:25:35,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d510a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:35, skipping insertion in model container [2021-03-11 20:25:35,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:25:35" (1/1) ... [2021-03-11 20:25:36,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:25:36,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:25:36,147 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i[950,963] [2021-03-11 20:25:36,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:36,320 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:25:36,328 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_tso.oepc.i[950,963] [2021-03-11 20:25:36,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:25:36,391 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:25:36,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36 WrapperNode [2021-03-11 20:25:36,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:25:36,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:36,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:25:36,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:25:36,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:25:36,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:25:36,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:25:36,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:25:36,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... [2021-03-11 20:25:36,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:25:36,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:25:36,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:25:36,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:25:36,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:25:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:25:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:25:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:25:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:25:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:25:36,501 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:25:36,501 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:25:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:25:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:25:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:25:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-03-11 20:25:36,502 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-03-11 20:25:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:25:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:25:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:25:36,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:25:36,504 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:25:36,782 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:25:36,782 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 20:25:36,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:36 BoogieIcfgContainer [2021-03-11 20:25:36,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:25:36,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:25:36,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:25:36,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:25:36,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:25:35" (1/3) ... [2021-03-11 20:25:36,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bbb370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:36, skipping insertion in model container [2021-03-11 20:25:36,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:25:36" (2/3) ... [2021-03-11 20:25:36,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bbb370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:25:36, skipping insertion in model container [2021-03-11 20:25:36,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:25:36" (3/3) ... [2021-03-11 20:25:36,788 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_tso.oepc.i [2021-03-11 20:25:36,791 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:25:36,794 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 20:25:36,794 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:25:36,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,820 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,820 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,821 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,821 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,821 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,822 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,823 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,824 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,824 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,825 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,826 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,826 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,826 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,826 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,826 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,828 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,828 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,831 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,831 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,831 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,831 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,832 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,833 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,834 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,834 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,834 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:25:36,835 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:25:36,847 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-11 20:25:36,859 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:25:36,859 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:25:36,859 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:25:36,859 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:25:36,859 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:25:36,859 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:25:36,860 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:25:36,860 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:25:36,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 20:25:36,892 INFO L129 PetriNetUnfolder]: 2/82 cut-off events. [2021-03-11 20:25:36,892 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:36,895 INFO L84 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 2/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-03-11 20:25:36,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 86 transitions, 192 flow [2021-03-11 20:25:36,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:36,900 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:25:36,906 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:36,908 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:36,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 80 places, 68 transitions, 148 flow [2021-03-11 20:25:36,920 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-03-11 20:25:36,921 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:36,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-03-11 20:25:36,922 INFO L116 LiptonReduction]: Number of co-enabled transitions 1250 [2021-03-11 20:25:38,842 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 20:25:39,055 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2021-03-11 20:25:39,127 INFO L131 LiptonReduction]: Checked pairs total: 2149 [2021-03-11 20:25:39,127 INFO L133 LiptonReduction]: Total number of compositions: 52 [2021-03-11 20:25:39,128 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2230 [2021-03-11 20:25:39,135 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-11 20:25:39,135 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:39,135 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,136 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,136 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1488768315, now seen corresponding path program 1 times [2021-03-11 20:25:39,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547833642] [2021-03-11 20:25:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,323 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547833642] [2021-03-11 20:25:39,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:39,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143921301] [2021-03-11 20:25:39,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:39,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:39,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:39,349 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:39,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:39,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,385 INFO L129 PetriNetUnfolder]: 45/127 cut-off events. [2021-03-11 20:25:39,385 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:25:39,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 127 events. 45/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 574 event pairs, 27 based on Foata normal form. 24/141 useless extension candidates. Maximal degree in co-relation 220. Up to 78 conditions per place. [2021-03-11 20:25:39,387 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 5 selfloop transitions, 6 changer transitions 0/24 dead transitions. [2021-03-11 20:25:39,387 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 82 flow [2021-03-11 20:25:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2021-03-11 20:25:39,396 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7946859903381642 [2021-03-11 20:25:39,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2021-03-11 20:25:39,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2021-03-11 20:25:39,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2021-03-11 20:25:39,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,407 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 3 states and 329 transitions. [2021-03-11 20:25:39,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 82 flow [2021-03-11 20:25:39,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 78 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:39,410 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 84 flow [2021-03-11 20:25:39,411 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-11 20:25:39,411 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2021-03-11 20:25:39,412 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 84 flow [2021-03-11 20:25:39,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,412 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,412 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:25:39,412 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash -690613596, now seen corresponding path program 1 times [2021-03-11 20:25:39,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396546168] [2021-03-11 20:25:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396546168] [2021-03-11 20:25:39,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:25:39,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456763480] [2021-03-11 20:25:39,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:39,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:39,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:39,470 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 138 [2021-03-11 20:25:39,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 138 [2021-03-11 20:25:39,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,482 INFO L129 PetriNetUnfolder]: 35/112 cut-off events. [2021-03-11 20:25:39,482 INFO L130 PetriNetUnfolder]: For 28/42 co-relation queries the response was YES. [2021-03-11 20:25:39,483 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 112 events. 35/112 cut-off events. For 28/42 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 484 event pairs, 19 based on Foata normal form. 3/108 useless extension candidates. Maximal degree in co-relation 224. Up to 63 conditions per place. [2021-03-11 20:25:39,483 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 1 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2021-03-11 20:25:39,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 24 transitions, 92 flow [2021-03-11 20:25:39,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2021-03-11 20:25:39,485 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2021-03-11 20:25:39,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2021-03-11 20:25:39,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2021-03-11 20:25:39,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2021-03-11 20:25:39,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,488 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 84 flow. Second operand 3 states and 358 transitions. [2021-03-11 20:25:39,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 24 transitions, 92 flow [2021-03-11 20:25:39,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:39,489 INFO L241 Difference]: Finished difference. Result has 34 places, 24 transitions, 89 flow [2021-03-11 20:25:39,489 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2021-03-11 20:25:39,490 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2021-03-11 20:25:39,490 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 89 flow [2021-03-11 20:25:39,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,490 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,490 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,490 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:25:39,491 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1092821475, now seen corresponding path program 1 times [2021-03-11 20:25:39,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519169167] [2021-03-11 20:25:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,540 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519169167] [2021-03-11 20:25:39,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:39,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229160446] [2021-03-11 20:25:39,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:39,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:39,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:39,552 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:39,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:39,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,583 INFO L129 PetriNetUnfolder]: 28/93 cut-off events. [2021-03-11 20:25:39,583 INFO L130 PetriNetUnfolder]: For 41/129 co-relation queries the response was YES. [2021-03-11 20:25:39,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 93 events. 28/93 cut-off events. For 41/129 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 360 event pairs, 11 based on Foata normal form. 7/94 useless extension candidates. Maximal degree in co-relation 241. Up to 53 conditions per place. [2021-03-11 20:25:39,584 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 9 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2021-03-11 20:25:39,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 138 flow [2021-03-11 20:25:39,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:39,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2021-03-11 20:25:39,589 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7844202898550725 [2021-03-11 20:25:39,591 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 433 transitions. [2021-03-11 20:25:39,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 433 transitions. [2021-03-11 20:25:39,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 433 transitions. [2021-03-11 20:25:39,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,594 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,594 INFO L185 Difference]: Start difference. First operand has 34 places, 24 transitions, 89 flow. Second operand 4 states and 433 transitions. [2021-03-11 20:25:39,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 138 flow [2021-03-11 20:25:39,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:39,595 INFO L241 Difference]: Finished difference. Result has 38 places, 26 transitions, 121 flow [2021-03-11 20:25:39,595 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2021-03-11 20:25:39,595 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2021-03-11 20:25:39,595 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 121 flow [2021-03-11 20:25:39,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,596 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,596 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:25:39,596 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,596 INFO L82 PathProgramCache]: Analyzing trace with hash -482274620, now seen corresponding path program 1 times [2021-03-11 20:25:39,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264219124] [2021-03-11 20:25:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,626 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,629 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264219124] [2021-03-11 20:25:39,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:39,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758253467] [2021-03-11 20:25:39,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:39,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:39,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:39,638 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:39,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:39,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,656 INFO L129 PetriNetUnfolder]: 22/83 cut-off events. [2021-03-11 20:25:39,656 INFO L130 PetriNetUnfolder]: For 81/148 co-relation queries the response was YES. [2021-03-11 20:25:39,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 83 events. 22/83 cut-off events. For 81/148 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 303 event pairs, 1 based on Foata normal form. 3/82 useless extension candidates. Maximal degree in co-relation 249. Up to 45 conditions per place. [2021-03-11 20:25:39,657 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 10 selfloop transitions, 11 changer transitions 0/34 dead transitions. [2021-03-11 20:25:39,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 212 flow [2021-03-11 20:25:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 436 transitions. [2021-03-11 20:25:39,659 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7898550724637681 [2021-03-11 20:25:39,659 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 436 transitions. [2021-03-11 20:25:39,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 436 transitions. [2021-03-11 20:25:39,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 436 transitions. [2021-03-11 20:25:39,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,661 INFO L185 Difference]: Start difference. First operand has 38 places, 26 transitions, 121 flow. Second operand 4 states and 436 transitions. [2021-03-11 20:25:39,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 212 flow [2021-03-11 20:25:39,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:25:39,663 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 190 flow [2021-03-11 20:25:39,663 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2021-03-11 20:25:39,663 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2021-03-11 20:25:39,663 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 190 flow [2021-03-11 20:25:39,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,663 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,663 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,663 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:25:39,664 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,664 INFO L82 PathProgramCache]: Analyzing trace with hash -2065612441, now seen corresponding path program 1 times [2021-03-11 20:25:39,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869360611] [2021-03-11 20:25:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,708 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869360611] [2021-03-11 20:25:39,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:39,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078439398] [2021-03-11 20:25:39,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:39,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:39,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:39,721 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 138 [2021-03-11 20:25:39,722 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,722 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,722 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 138 [2021-03-11 20:25:39,722 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,763 INFO L129 PetriNetUnfolder]: 68/199 cut-off events. [2021-03-11 20:25:39,763 INFO L130 PetriNetUnfolder]: For 402/595 co-relation queries the response was YES. [2021-03-11 20:25:39,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 199 events. 68/199 cut-off events. For 402/595 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1058 event pairs, 6 based on Foata normal form. 17/209 useless extension candidates. Maximal degree in co-relation 702. Up to 96 conditions per place. [2021-03-11 20:25:39,765 INFO L132 encePairwiseOnDemand]: 130/138 looper letters, 15 selfloop transitions, 12 changer transitions 20/59 dead transitions. [2021-03-11 20:25:39,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 59 transitions, 526 flow [2021-03-11 20:25:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 532 transitions. [2021-03-11 20:25:39,766 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7710144927536232 [2021-03-11 20:25:39,766 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 532 transitions. [2021-03-11 20:25:39,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 532 transitions. [2021-03-11 20:25:39,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 532 transitions. [2021-03-11 20:25:39,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.4) internal successors, (532), 5 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) [2021-03-11 20:25:39,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,769 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,769 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 190 flow. Second operand 5 states and 532 transitions. [2021-03-11 20:25:39,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 59 transitions, 526 flow [2021-03-11 20:25:39,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 59 transitions, 522 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-03-11 20:25:39,772 INFO L241 Difference]: Finished difference. Result has 48 places, 31 transitions, 221 flow [2021-03-11 20:25:39,772 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=48, PETRI_TRANSITIONS=31} [2021-03-11 20:25:39,772 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2021-03-11 20:25:39,772 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 31 transitions, 221 flow [2021-03-11 20:25:39,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,772 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,772 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:25:39,773 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash -289274480, now seen corresponding path program 1 times [2021-03-11 20:25:39,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62085923] [2021-03-11 20:25:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,793 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,798 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-03-11 20:25:39,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-11 20:25:39,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62085923] [2021-03-11 20:25:39,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:39,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294106933] [2021-03-11 20:25:39,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:39,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:39,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:39,808 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 138 [2021-03-11 20:25:39,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 31 transitions, 221 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 138 [2021-03-11 20:25:39,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,842 INFO L129 PetriNetUnfolder]: 22/98 cut-off events. [2021-03-11 20:25:39,842 INFO L130 PetriNetUnfolder]: For 296/329 co-relation queries the response was YES. [2021-03-11 20:25:39,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 98 events. 22/98 cut-off events. For 296/329 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 426 event pairs, 4 based on Foata normal form. 7/102 useless extension candidates. Maximal degree in co-relation 393. Up to 52 conditions per place. [2021-03-11 20:25:39,844 INFO L132 encePairwiseOnDemand]: 132/138 looper letters, 8 selfloop transitions, 8 changer transitions 10/39 dead transitions. [2021-03-11 20:25:39,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 336 flow [2021-03-11 20:25:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2021-03-11 20:25:39,845 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7869565217391304 [2021-03-11 20:25:39,846 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2021-03-11 20:25:39,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2021-03-11 20:25:39,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2021-03-11 20:25:39,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,848 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,848 INFO L185 Difference]: Start difference. First operand has 48 places, 31 transitions, 221 flow. Second operand 5 states and 543 transitions. [2021-03-11 20:25:39,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 336 flow [2021-03-11 20:25:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 298 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-11 20:25:39,850 INFO L241 Difference]: Finished difference. Result has 48 places, 28 transitions, 182 flow [2021-03-11 20:25:39,851 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=48, PETRI_TRANSITIONS=28} [2021-03-11 20:25:39,851 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2021-03-11 20:25:39,851 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 28 transitions, 182 flow [2021-03-11 20:25:39,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,851 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,851 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:25:39,851 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1589475216, now seen corresponding path program 1 times [2021-03-11 20:25:39,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475333316] [2021-03-11 20:25:39,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,898 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,899 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:39,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475333316] [2021-03-11 20:25:39,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:39,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225510895] [2021-03-11 20:25:39,903 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:25:39,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:25:39,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:25:39,905 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 138 [2021-03-11 20:25:39,906 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 28 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 138 [2021-03-11 20:25:39,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:39,917 INFO L129 PetriNetUnfolder]: 8/60 cut-off events. [2021-03-11 20:25:39,917 INFO L130 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2021-03-11 20:25:39,917 INFO L84 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 60 events. 8/60 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 194 event pairs, 3 based on Foata normal form. 4/64 useless extension candidates. Maximal degree in co-relation 205. Up to 28 conditions per place. [2021-03-11 20:25:39,918 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 6 selfloop transitions, 4 changer transitions 1/28 dead transitions. [2021-03-11 20:25:39,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 28 transitions, 204 flow [2021-03-11 20:25:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:25:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:25:39,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-03-11 20:25:39,919 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8526570048309179 [2021-03-11 20:25:39,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-03-11 20:25:39,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-03-11 20:25:39,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:39,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-03-11 20:25:39,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,921 INFO L185 Difference]: Start difference. First operand has 48 places, 28 transitions, 182 flow. Second operand 3 states and 353 transitions. [2021-03-11 20:25:39,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 28 transitions, 204 flow [2021-03-11 20:25:39,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 171 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-03-11 20:25:39,922 INFO L241 Difference]: Finished difference. Result has 44 places, 27 transitions, 155 flow [2021-03-11 20:25:39,923 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2021-03-11 20:25:39,923 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2021-03-11 20:25:39,923 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 155 flow [2021-03-11 20:25:39,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:39,923 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:39,923 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:39,923 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:25:39,923 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:39,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1428164298, now seen corresponding path program 2 times [2021-03-11 20:25:39,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:39,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342942347] [2021-03-11 20:25:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:39,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:39,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:39,974 INFO L142 QuantifierPusher]: treesize reduction 19, result has 32.1 percent of original size [2021-03-11 20:25:39,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-11 20:25:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:39,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342942347] [2021-03-11 20:25:39,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:39,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:25:39,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567260603] [2021-03-11 20:25:39,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:39,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:39,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:39,982 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:39,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 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) [2021-03-11 20:25:39,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:39,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:39,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,044 INFO L129 PetriNetUnfolder]: 310/562 cut-off events. [2021-03-11 20:25:40,045 INFO L130 PetriNetUnfolder]: For 1212/1376 co-relation queries the response was YES. [2021-03-11 20:25:40,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 562 events. 310/562 cut-off events. For 1212/1376 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 3100 event pairs, 154 based on Foata normal form. 39/537 useless extension candidates. Maximal degree in co-relation 1368. Up to 392 conditions per place. [2021-03-11 20:25:40,049 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 10 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2021-03-11 20:25:40,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 221 flow [2021-03-11 20:25:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:25:40,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:25:40,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2021-03-11 20:25:40,051 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7782608695652173 [2021-03-11 20:25:40,051 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2021-03-11 20:25:40,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2021-03-11 20:25:40,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2021-03-11 20:25:40,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 138.0) internal successors, (828), 6 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,053 INFO L185 Difference]: Start difference. First operand has 44 places, 27 transitions, 155 flow. Second operand 5 states and 537 transitions. [2021-03-11 20:25:40,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 221 flow [2021-03-11 20:25:40,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 203 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 20:25:40,055 INFO L241 Difference]: Finished difference. Result has 48 places, 36 transitions, 212 flow [2021-03-11 20:25:40,055 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2021-03-11 20:25:40,055 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2021-03-11 20:25:40,055 INFO L480 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 212 flow [2021-03-11 20:25:40,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 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) [2021-03-11 20:25:40,055 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,056 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:25:40,056 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash -2067318507, now seen corresponding path program 1 times [2021-03-11 20:25:40,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980650353] [2021-03-11 20:25:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,089 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,092 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:40,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:40,095 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:40,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:40,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980650353] [2021-03-11 20:25:40,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:40,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794191637] [2021-03-11 20:25:40,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:25:40,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:25:40,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:25:40,103 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:40,103 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 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) [2021-03-11 20:25:40,103 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,103 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:40,103 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,177 INFO L129 PetriNetUnfolder]: 265/516 cut-off events. [2021-03-11 20:25:40,177 INFO L130 PetriNetUnfolder]: For 2082/3528 co-relation queries the response was YES. [2021-03-11 20:25:40,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 516 events. 265/516 cut-off events. For 2082/3528 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 2919 event pairs, 44 based on Foata normal form. 138/607 useless extension candidates. Maximal degree in co-relation 2073. Up to 444 conditions per place. [2021-03-11 20:25:40,179 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 10 selfloop transitions, 19 changer transitions 0/49 dead transitions. [2021-03-11 20:25:40,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 346 flow [2021-03-11 20:25:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 20:25:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 20:25:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 752 transitions. [2021-03-11 20:25:40,181 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7784679089026915 [2021-03-11 20:25:40,181 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 752 transitions. [2021-03-11 20:25:40,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 752 transitions. [2021-03-11 20:25:40,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 752 transitions. [2021-03-11 20:25:40,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,184 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 138.0) internal successors, (1104), 8 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,184 INFO L185 Difference]: Start difference. First operand has 48 places, 36 transitions, 212 flow. Second operand 7 states and 752 transitions. [2021-03-11 20:25:40,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 346 flow [2021-03-11 20:25:40,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 335 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:25:40,188 INFO L241 Difference]: Finished difference. Result has 55 places, 45 transitions, 335 flow [2021-03-11 20:25:40,188 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2021-03-11 20:25:40,188 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2021-03-11 20:25:40,188 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 335 flow [2021-03-11 20:25:40,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 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) [2021-03-11 20:25:40,189 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,204 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:25:40,204 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,204 INFO L82 PathProgramCache]: Analyzing trace with hash 337896068, now seen corresponding path program 1 times [2021-03-11 20:25:40,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552555000] [2021-03-11 20:25:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,230 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:40,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:40,234 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:40,236 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552555000] [2021-03-11 20:25:40,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:25:40,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056406216] [2021-03-11 20:25:40,243 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:25:40,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:25:40,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:25:40,246 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:40,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 335 flow. Second operand has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:40,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,344 INFO L129 PetriNetUnfolder]: 236/480 cut-off events. [2021-03-11 20:25:40,344 INFO L130 PetriNetUnfolder]: For 3248/7640 co-relation queries the response was YES. [2021-03-11 20:25:40,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 480 events. 236/480 cut-off events. For 3248/7640 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 2803 event pairs, 5 based on Foata normal form. 231/668 useless extension candidates. Maximal degree in co-relation 2679. Up to 430 conditions per place. [2021-03-11 20:25:40,347 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 6 selfloop transitions, 28 changer transitions 4/58 dead transitions. [2021-03-11 20:25:40,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 537 flow [2021-03-11 20:25:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-11 20:25:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-11 20:25:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 967 transitions. [2021-03-11 20:25:40,349 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7785829307568438 [2021-03-11 20:25:40,349 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 967 transitions. [2021-03-11 20:25:40,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 967 transitions. [2021-03-11 20:25:40,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 967 transitions. [2021-03-11 20:25:40,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.44444444444444) internal successors, (967), 9 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,354 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 138.0) internal successors, (1380), 10 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,354 INFO L185 Difference]: Start difference. First operand has 55 places, 45 transitions, 335 flow. Second operand 9 states and 967 transitions. [2021-03-11 20:25:40,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 537 flow [2021-03-11 20:25:40,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 487 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-03-11 20:25:40,360 INFO L241 Difference]: Finished difference. Result has 63 places, 54 transitions, 463 flow [2021-03-11 20:25:40,361 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=463, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2021-03-11 20:25:40,361 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2021-03-11 20:25:40,361 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 463 flow [2021-03-11 20:25:40,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,361 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,361 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:25:40,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:25:40,361 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1018632942, now seen corresponding path program 1 times [2021-03-11 20:25:40,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540885063] [2021-03-11 20:25:40,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,406 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,406 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,410 INFO L142 QuantifierPusher]: treesize reduction 4, result has 50.0 percent of original size [2021-03-11 20:25:40,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 20:25:40,416 INFO L142 QuantifierPusher]: treesize reduction 11, result has 54.2 percent of original size [2021-03-11 20:25:40,419 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:25:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540885063] [2021-03-11 20:25:40,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:25:40,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150198389] [2021-03-11 20:25:40,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:25:40,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:25:40,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:25:40,429 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 138 [2021-03-11 20:25:40,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 463 flow. Second operand has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 138 [2021-03-11 20:25:40,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,540 INFO L129 PetriNetUnfolder]: 201/431 cut-off events. [2021-03-11 20:25:40,540 INFO L130 PetriNetUnfolder]: For 4344/6619 co-relation queries the response was YES. [2021-03-11 20:25:40,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 431 events. 201/431 cut-off events. For 4344/6619 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 2558 event pairs, 0 based on Foata normal form. 228/617 useless extension candidates. Maximal degree in co-relation 2637. Up to 288 conditions per place. [2021-03-11 20:25:40,543 INFO L132 encePairwiseOnDemand]: 131/138 looper letters, 2 selfloop transitions, 30 changer transitions 12/59 dead transitions. [2021-03-11 20:25:40,543 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 597 flow [2021-03-11 20:25:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-11 20:25:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-11 20:25:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1174 transitions. [2021-03-11 20:25:40,545 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7733860342555995 [2021-03-11 20:25:40,545 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1174 transitions. [2021-03-11 20:25:40,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1174 transitions. [2021-03-11 20:25:40,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1174 transitions. [2021-03-11 20:25:40,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.72727272727273) internal successors, (1174), 11 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,549 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 138.0) internal successors, (1656), 12 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,549 INFO L185 Difference]: Start difference. First operand has 63 places, 54 transitions, 463 flow. Second operand 11 states and 1174 transitions. [2021-03-11 20:25:40,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 597 flow [2021-03-11 20:25:40,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 500 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-03-11 20:25:40,560 INFO L241 Difference]: Finished difference. Result has 72 places, 47 transitions, 397 flow [2021-03-11 20:25:40,560 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=397, PETRI_PLACES=72, PETRI_TRANSITIONS=47} [2021-03-11 20:25:40,561 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 39 predicate places. [2021-03-11 20:25:40,561 INFO L480 AbstractCegarLoop]: Abstraction has has 72 places, 47 transitions, 397 flow [2021-03-11 20:25:40,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,561 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:25:40,561 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] [2021-03-11 20:25:40,561 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:25:40,561 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:25:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:25:40,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1875857013, now seen corresponding path program 1 times [2021-03-11 20:25:40,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:25:40,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270959428] [2021-03-11 20:25:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:25:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:25:40,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:25:40,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:25:40,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:25:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:25:40,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270959428] [2021-03-11 20:25:40,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:25:40,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:25:40,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927168206] [2021-03-11 20:25:40,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:25:40,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:25:40,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:25:40,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:25:40,589 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 138 [2021-03-11 20:25:40,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 47 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:25:40,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 138 [2021-03-11 20:25:40,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:25:40,608 INFO L129 PetriNetUnfolder]: 51/135 cut-off events. [2021-03-11 20:25:40,608 INFO L130 PetriNetUnfolder]: For 762/841 co-relation queries the response was YES. [2021-03-11 20:25:40,609 INFO L84 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 135 events. 51/135 cut-off events. For 762/841 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 608 event pairs, 0 based on Foata normal form. 5/127 useless extension candidates. Maximal degree in co-relation 577. Up to 35 conditions per place. [2021-03-11 20:25:40,609 INFO L132 encePairwiseOnDemand]: 135/138 looper letters, 0 selfloop transitions, 0 changer transitions 46/46 dead transitions. [2021-03-11 20:25:40,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 46 transitions, 379 flow [2021-03-11 20:25:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:25:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:25:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2021-03-11 20:25:40,610 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8134057971014492 [2021-03-11 20:25:40,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2021-03-11 20:25:40,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2021-03-11 20:25:40,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:25:40,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2021-03-11 20:25:40,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,612 INFO L185 Difference]: Start difference. First operand has 72 places, 47 transitions, 397 flow. Second operand 4 states and 449 transitions. [2021-03-11 20:25:40,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 46 transitions, 379 flow [2021-03-11 20:25:40,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 46 transitions, 232 flow, removed 23 selfloop flow, removed 21 redundant places. [2021-03-11 20:25:40,615 INFO L241 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2021-03-11 20:25:40,616 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2021-03-11 20:25:40,616 INFO L335 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2021-03-11 20:25:40,616 INFO L480 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2021-03-11 20:25:40,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 20:25:40,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:25:40,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:25:40 BasicIcfg [2021-03-11 20:25:40,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:25:40,620 INFO L168 Benchmark]: Toolchain (without parser) took 4632.63 ms. Allocated memory was 383.8 MB in the beginning and 461.4 MB in the end (delta: 77.6 MB). Free memory was 347.0 MB in the beginning and 315.1 MB in the end (delta: 31.9 MB). Peak memory consumption was 109.9 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:40,621 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 383.8 MB. Free memory was 365.0 MB in the beginning and 365.0 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:25:40,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.79 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 345.4 MB in the end (delta: 987.9 kB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:40,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 383.8 MB. Free memory was 345.4 MB in the beginning and 344.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:40,623 INFO L168 Benchmark]: Boogie Preprocessor took 13.08 ms. Allocated memory is still 383.8 MB. Free memory was 344.4 MB in the beginning and 342.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:40,623 INFO L168 Benchmark]: RCFGBuilder took 336.77 ms. Allocated memory is still 383.8 MB. Free memory was 342.3 MB in the beginning and 317.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:40,623 INFO L168 Benchmark]: TraceAbstraction took 3834.73 ms. Allocated memory was 383.8 MB in the beginning and 461.4 MB in the end (delta: 77.6 MB). Free memory was 316.1 MB in the beginning and 315.1 MB in the end (delta: 933.1 kB). Peak memory consumption was 81.7 MB. Max. memory is 16.0 GB. [2021-03-11 20:25:40,627 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 383.8 MB. Free memory was 365.0 MB in the beginning and 365.0 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 399.79 ms. Allocated memory is still 383.8 MB. Free memory was 346.4 MB in the beginning and 345.4 MB in the end (delta: 987.9 kB). Peak memory consumption was 6.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 383.8 MB. Free memory was 345.4 MB in the beginning and 344.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.08 ms. Allocated memory is still 383.8 MB. Free memory was 344.4 MB in the beginning and 342.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 336.77 ms. Allocated memory is still 383.8 MB. Free memory was 342.3 MB in the beginning and 317.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3834.73 ms. Allocated memory was 383.8 MB in the beginning and 461.4 MB in the end (delta: 77.6 MB). Free memory was 316.1 MB in the beginning and 315.1 MB in the end (delta: 933.1 kB). Peak memory consumption was 81.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2219.2ms, 80 PlacesBefore, 33 PlacesAfterwards, 68 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 2149 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1271, positive: 1194, positive conditional: 0, positive unconditional: 1194, negative: 77, negative conditional: 0, negative unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 883, positive: 854, positive conditional: 0, positive unconditional: 854, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 883, positive: 837, positive conditional: 0, positive unconditional: 837, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 46, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 29, negative conditional: 0, negative unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 194, positive: 80, positive conditional: 0, positive unconditional: 80, negative: 115, negative conditional: 0, negative unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1271, positive: 340, positive conditional: 0, positive unconditional: 340, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 883, unknown conditional: 0, unknown unconditional: 883] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3759.9ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 707.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2272.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60 SDtfs, 51 SDslu, 42 SDs, 0 SdLazy, 231 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 159.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 156.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred in iteration=10, InterpolantAutomatonStates: 63, 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: 21.8ms SsaConstructionTime, 171.6ms SatisfiabilityAnalysisTime, 423.8ms InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 661 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...