/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 00:59:09,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 00:59:09,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 00:59:09,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 00:59:09,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 00:59:09,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 00:59:09,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 00:59:09,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 00:59:09,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 00:59:09,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 00:59:09,766 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 00:59:09,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 00:59:09,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 00:59:09,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 00:59:09,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 00:59:09,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 00:59:09,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 00:59:09,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 00:59:09,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 00:59:09,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 00:59:09,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-OGIterative.epf [2021-08-13 00:59:09,828 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 00:59:09,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 00:59:09,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 00:59:09,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 00:59:09,831 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 00:59:09,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 00:59:09,832 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 00:59:09,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 00:59:09,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 00:59:09,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 00:59:09,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 00:59:09,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 00:59:09,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 00:59:09,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 00:59:09,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 00:59:09,833 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 00:59:09,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 00:59:09,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 00:59:09,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 00:59:09,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 00:59:09,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 00:59:09,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 00:59:09,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 00:59:09,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 00:59:09,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 00:59:09,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 00:59:09,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 00:59:09,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 00:59:09,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 00:59:09,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 00:59:09,835 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 00:59:09,835 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 00:59:10,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 00:59:10,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 00:59:10,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 00:59:10,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 00:59:10,097 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 00:59:10,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2021-08-13 00:59:10,140 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2221d03b6/f507d19cbedd481096986f9d2c12d886/FLAG52d0eb67f [2021-08-13 00:59:10,557 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 00:59:10,557 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i [2021-08-13 00:59:10,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2221d03b6/f507d19cbedd481096986f9d2c12d886/FLAG52d0eb67f [2021-08-13 00:59:10,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2221d03b6/f507d19cbedd481096986f9d2c12d886 [2021-08-13 00:59:10,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 00:59:10,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 00:59:10,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 00:59:10,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 00:59:10,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 00:59:10,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:59:10" (1/1) ... [2021-08-13 00:59:10,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2476b288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:10, skipping insertion in model container [2021-08-13 00:59:10,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:59:10" (1/1) ... [2021-08-13 00:59:10,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 00:59:10,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 00:59:11,074 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i[950,963] [2021-08-13 00:59:11,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:59:11,191 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 00:59:11,237 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_tso.oepc.i[950,963] [2021-08-13 00:59:11,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:59:11,322 INFO L208 MainTranslator]: Completed translation [2021-08-13 00:59:11,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11 WrapperNode [2021-08-13 00:59:11,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 00:59:11,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 00:59:11,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 00:59:11,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 00:59:11,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 00:59:11,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 00:59:11,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 00:59:11,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 00:59:11,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (1/1) ... [2021-08-13 00:59:11,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 00:59:11,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 00:59:11,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 00:59:11,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 00:59:11,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (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 [2021-08-13 00:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 00:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 00:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 00:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 00:59:11,426 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 00:59:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 00:59:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 00:59:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 00:59:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 00:59:11,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 00:59:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 00:59:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 00:59:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 00:59:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 00:59:11,428 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 00:59:11,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 00:59:11,737 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 00:59:11,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:59:11 BoogieIcfgContainer [2021-08-13 00:59:11,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 00:59:11,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 00:59:11,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 00:59:11,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 00:59:11,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 12:59:10" (1/3) ... [2021-08-13 00:59:11,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6247f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:59:11, skipping insertion in model container [2021-08-13 00:59:11,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:59:11" (2/3) ... [2021-08-13 00:59:11,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6247f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:59:11, skipping insertion in model container [2021-08-13 00:59:11,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:59:11" (3/3) ... [2021-08-13 00:59:11,743 INFO L111 eAbstractionObserver]: Analyzing ICFG safe018_tso.oepc.i [2021-08-13 00:59:11,747 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 00:59:11,747 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 00:59:11,748 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 00:59:11,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,766 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,766 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,766 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,767 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,767 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,767 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,768 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,769 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,770 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,770 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,770 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,772 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,772 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,772 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,772 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,775 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,776 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,776 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,777 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,777 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,777 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:59:11,779 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 00:59:11,794 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 00:59:11,807 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 00:59:11,807 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 00:59:11,807 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 00:59:11,807 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 00:59:11,807 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 00:59:11,807 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 00:59:11,807 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 00:59:11,807 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 00:59:11,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 00:59:11,863 INFO L129 PetriNetUnfolder]: 2/80 cut-off events. [2021-08-13 00:59:11,863 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:59:11,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 00:59:11,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2021-08-13 00:59:11,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2021-08-13 00:59:11,900 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-08-13 00:59:11,900 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:59:11,901 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:11,901 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:11,902 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:11,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1924556435, now seen corresponding path program 1 times [2021-08-13 00:59:11,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:11,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363832123] [2021-08-13 00:59:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:12,167 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:12,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:12,180 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:59:12,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:59:12,189 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:59:12,190 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:59:12,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,205 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:12,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:12,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:12,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:12,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:12,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363832123] [2021-08-13 00:59:12,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363832123] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:12,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:12,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:59:12,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521824977] [2021-08-13 00:59:12,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:59:12,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:12,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:59:12,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:59:12,244 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-08-13 00:59:12,246 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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) [2021-08-13 00:59:12,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:12,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-08-13 00:59:12,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:12,427 INFO L129 PetriNetUnfolder]: 46/172 cut-off events. [2021-08-13 00:59:12,428 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:59:12,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 172 events. 46/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 10 based on Foata normal form. 8/174 useless extension candidates. Maximal degree in co-relation 249. Up to 47 conditions per place. [2021-08-13 00:59:12,430 INFO L132 encePairwiseOnDemand]: 76/83 looper letters, 11 selfloop transitions, 2 changer transitions 19/87 dead transitions. [2021-08-13 00:59:12,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 87 transitions, 247 flow [2021-08-13 00:59:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 00:59:12,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 00:59:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 639 transitions. [2021-08-13 00:59:12,451 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8554216867469879 [2021-08-13 00:59:12,451 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 639 transitions. [2021-08-13 00:59:12,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 639 transitions. [2021-08-13 00:59:12,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:12,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 639 transitions. [2021-08-13 00:59:12,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.0) internal successors, (639), 9 states have internal predecessors, (639), 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) [2021-08-13 00:59:12,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-08-13 00:59:12,474 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 83.0) internal successors, (830), 10 states have internal predecessors, (830), 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) [2021-08-13 00:59:12,475 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2021-08-13 00:59:12,475 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 87 transitions, 247 flow [2021-08-13 00:59:12,475 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 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) [2021-08-13 00:59:12,475 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:12,476 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:12,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 00:59:12,476 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:12,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:12,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1190945394, now seen corresponding path program 1 times [2021-08-13 00:59:12,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:12,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372345536] [2021-08-13 00:59:12,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:12,551 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:12,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:12,557 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:59:12,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:59:12,568 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:59:12,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:59:12,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:12,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:12,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:12,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:12,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:12,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372345536] [2021-08-13 00:59:12,605 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372345536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:12,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:12,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:59:12,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272566375] [2021-08-13 00:59:12,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:59:12,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:12,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:59:12,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:59:12,608 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-08-13 00:59:12,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 87 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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) [2021-08-13 00:59:12,609 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:12,609 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-08-13 00:59:12,609 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:12,906 INFO L129 PetriNetUnfolder]: 142/445 cut-off events. [2021-08-13 00:59:12,906 INFO L130 PetriNetUnfolder]: For 52/124 co-relation queries the response was YES. [2021-08-13 00:59:12,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 445 events. 142/445 cut-off events. For 52/124 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2401 event pairs, 5 based on Foata normal form. 10/450 useless extension candidates. Maximal degree in co-relation 935. Up to 106 conditions per place. [2021-08-13 00:59:12,913 INFO L132 encePairwiseOnDemand]: 71/83 looper letters, 16 selfloop transitions, 11 changer transitions 125/205 dead transitions. [2021-08-13 00:59:12,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 205 transitions, 1009 flow [2021-08-13 00:59:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 00:59:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 00:59:12,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1188 transitions. [2021-08-13 00:59:12,916 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8419560595322466 [2021-08-13 00:59:12,916 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1188 transitions. [2021-08-13 00:59:12,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1188 transitions. [2021-08-13 00:59:12,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:12,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1188 transitions. [2021-08-13 00:59:12,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 69.88235294117646) internal successors, (1188), 17 states have internal predecessors, (1188), 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) [2021-08-13 00:59:12,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 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) [2021-08-13 00:59:12,921 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 83.0) internal successors, (1494), 18 states have internal predecessors, (1494), 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) [2021-08-13 00:59:12,921 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2021-08-13 00:59:12,921 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 205 transitions, 1009 flow [2021-08-13 00:59:12,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 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) [2021-08-13 00:59:12,922 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:12,923 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:12,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 00:59:12,923 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:12,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1755290832, now seen corresponding path program 1 times [2021-08-13 00:59:12,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:12,930 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447921628] [2021-08-13 00:59:12,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:13,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:13,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:13,020 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:59:13,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:59:13,028 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:59:13,029 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:59:13,041 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:13,047 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,049 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:13,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:13,061 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:13,061 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447921628] [2021-08-13 00:59:13,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447921628] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:13,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:13,062 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:59:13,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735751015] [2021-08-13 00:59:13,062 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:59:13,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:13,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:59:13,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:59:13,064 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 83 [2021-08-13 00:59:13,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 205 transitions, 1009 flow. Second operand has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:59:13,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:13,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 83 [2021-08-13 00:59:13,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:13,203 INFO L129 PetriNetUnfolder]: 145/490 cut-off events. [2021-08-13 00:59:13,204 INFO L130 PetriNetUnfolder]: For 210/415 co-relation queries the response was YES. [2021-08-13 00:59:13,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 490 events. 145/490 cut-off events. For 210/415 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2904 event pairs, 0 based on Foata normal form. 8/495 useless extension candidates. Maximal degree in co-relation 1245. Up to 116 conditions per place. [2021-08-13 00:59:13,208 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 19 selfloop transitions, 6 changer transitions 163/244 dead transitions. [2021-08-13 00:59:13,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 244 transitions, 1607 flow [2021-08-13 00:59:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 00:59:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 00:59:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 708 transitions. [2021-08-13 00:59:13,215 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8530120481927711 [2021-08-13 00:59:13,215 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 708 transitions. [2021-08-13 00:59:13,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 708 transitions. [2021-08-13 00:59:13,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:13,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 708 transitions. [2021-08-13 00:59:13,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.8) internal successors, (708), 10 states have internal predecessors, (708), 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) [2021-08-13 00:59:13,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-08-13 00:59:13,218 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-08-13 00:59:13,218 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2021-08-13 00:59:13,218 INFO L482 AbstractCegarLoop]: Abstraction has has 110 places, 244 transitions, 1607 flow [2021-08-13 00:59:13,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.57142857142857) internal successors, (480), 7 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:59:13,218 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:13,218 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:13,218 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 00:59:13,218 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1730637553, now seen corresponding path program 1 times [2021-08-13 00:59:13,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:13,220 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964388861] [2021-08-13 00:59:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:13,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:13,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:13,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:13,303 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 00:59:13,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 00:59:13,311 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:59:13,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:59:13,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:13,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:13,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:13,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:13,343 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964388861] [2021-08-13 00:59:13,343 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964388861] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:13,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:13,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:59:13,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267719343] [2021-08-13 00:59:13,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:59:13,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:59:13,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:59:13,347 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-08-13 00:59:13,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 244 transitions, 1607 flow. Second operand has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:59:13,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:13,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-08-13 00:59:13,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:13,519 INFO L129 PetriNetUnfolder]: 146/529 cut-off events. [2021-08-13 00:59:13,519 INFO L130 PetriNetUnfolder]: For 330/1204 co-relation queries the response was YES. [2021-08-13 00:59:13,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 529 events. 146/529 cut-off events. For 330/1204 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3364 event pairs, 5 based on Foata normal form. 21/546 useless extension candidates. Maximal degree in co-relation 1671. Up to 126 conditions per place. [2021-08-13 00:59:13,521 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 10 selfloop transitions, 4 changer transitions 203/269 dead transitions. [2021-08-13 00:59:13,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 269 transitions, 2215 flow [2021-08-13 00:59:13,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:59:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:59:13,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 896 transitions. [2021-08-13 00:59:13,524 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.830398517145505 [2021-08-13 00:59:13,524 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 896 transitions. [2021-08-13 00:59:13,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 896 transitions. [2021-08-13 00:59:13,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:13,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 896 transitions. [2021-08-13 00:59:13,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 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) [2021-08-13 00:59:13,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-08-13 00:59:13,528 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-08-13 00:59:13,528 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 45 predicate places. [2021-08-13 00:59:13,528 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 269 transitions, 2215 flow [2021-08-13 00:59:13,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.5) internal successors, (532), 8 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:59:13,528 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:13,528 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:13,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 00:59:13,528 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:13,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:13,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1775122426, now seen corresponding path program 1 times [2021-08-13 00:59:13,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:13,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175513599] [2021-08-13 00:59:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:13,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:13,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,616 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:13,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:13,626 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:59:13,627 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:59:13,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:13,649 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:13,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:13,657 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:13,657 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175513599] [2021-08-13 00:59:13,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175513599] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:13,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:13,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:59:13,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071772143] [2021-08-13 00:59:13,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:59:13,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:13,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:59:13,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:59:13,660 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2021-08-13 00:59:13,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 269 transitions, 2215 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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) [2021-08-13 00:59:13,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:13,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2021-08-13 00:59:13,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:13,921 INFO L129 PetriNetUnfolder]: 537/1408 cut-off events. [2021-08-13 00:59:13,922 INFO L130 PetriNetUnfolder]: For 1930/5156 co-relation queries the response was YES. [2021-08-13 00:59:13,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 1408 events. 537/1408 cut-off events. For 1930/5156 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11071 event pairs, 5 based on Foata normal form. 21/1421 useless extension candidates. Maximal degree in co-relation 5425. Up to 343 conditions per place. [2021-08-13 00:59:13,929 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 7 selfloop transitions, 4 changer transitions 519/585 dead transitions. [2021-08-13 00:59:13,929 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 585 transitions, 6349 flow [2021-08-13 00:59:13,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:59:13,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:59:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 929 transitions. [2021-08-13 00:59:13,931 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.860982391102873 [2021-08-13 00:59:13,931 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 929 transitions. [2021-08-13 00:59:13,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 929 transitions. [2021-08-13 00:59:13,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:13,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 929 transitions. [2021-08-13 00:59:13,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.46153846153847) internal successors, (929), 13 states have internal predecessors, (929), 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) [2021-08-13 00:59:13,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-08-13 00:59:13,935 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-08-13 00:59:13,935 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2021-08-13 00:59:13,935 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 585 transitions, 6349 flow [2021-08-13 00:59:13,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 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) [2021-08-13 00:59:13,936 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:13,936 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:13,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 00:59:13,936 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:13,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:13,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1702036349, now seen corresponding path program 1 times [2021-08-13 00:59:13,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:13,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822687004] [2021-08-13 00:59:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:13,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:13,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,976 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:13,980 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:59:13,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:59:13,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:13,994 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:59:14,000 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:59:14,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:14,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:14,008 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:14,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822687004] [2021-08-13 00:59:14,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822687004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:14,009 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:14,009 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:59:14,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716122679] [2021-08-13 00:59:14,009 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:59:14,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:14,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:59:14,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:59:14,010 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 00:59:14,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 585 transitions, 6349 flow. Second operand has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:59:14,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:14,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 00:59:14,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:14,437 INFO L129 PetriNetUnfolder]: 1105/2698 cut-off events. [2021-08-13 00:59:14,437 INFO L130 PetriNetUnfolder]: For 1735/2495 co-relation queries the response was YES. [2021-08-13 00:59:14,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8334 conditions, 2698 events. 1105/2698 cut-off events. For 1735/2495 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 23943 event pairs, 37 based on Foata normal form. 21/2527 useless extension candidates. Maximal degree in co-relation 8277. Up to 619 conditions per place. [2021-08-13 00:59:14,448 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 10 selfloop transitions, 6 changer transitions 354/446 dead transitions. [2021-08-13 00:59:14,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 446 transitions, 4463 flow [2021-08-13 00:59:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 00:59:14,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 00:59:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 733 transitions. [2021-08-13 00:59:14,450 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8831325301204819 [2021-08-13 00:59:14,450 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 733 transitions. [2021-08-13 00:59:14,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 733 transitions. [2021-08-13 00:59:14,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:14,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 733 transitions. [2021-08-13 00:59:14,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 73.3) internal successors, (733), 10 states have internal predecessors, (733), 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) [2021-08-13 00:59:14,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-08-13 00:59:14,453 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 83.0) internal successors, (913), 11 states have internal predecessors, (913), 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) [2021-08-13 00:59:14,453 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 66 predicate places. [2021-08-13 00:59:14,453 INFO L482 AbstractCegarLoop]: Abstraction has has 143 places, 446 transitions, 4463 flow [2021-08-13 00:59:14,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 70.16666666666667) internal successors, (421), 6 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:59:14,453 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:14,453 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:14,453 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 00:59:14,453 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:14,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:14,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1756712025, now seen corresponding path program 1 times [2021-08-13 00:59:14,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:14,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224623989] [2021-08-13 00:59:14,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:14,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:14,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:14,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:14,496 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:59:14,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:59:14,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:59:14,511 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:59:14,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:14,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:14,518 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:14,518 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224623989] [2021-08-13 00:59:14,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224623989] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:14,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:14,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:59:14,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293256763] [2021-08-13 00:59:14,518 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:59:14,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:14,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:59:14,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:59:14,520 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 00:59:14,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 446 transitions, 4463 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2021-08-13 00:59:14,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:14,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 00:59:14,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:14,908 INFO L129 PetriNetUnfolder]: 750/1933 cut-off events. [2021-08-13 00:59:14,908 INFO L130 PetriNetUnfolder]: For 727/1639 co-relation queries the response was YES. [2021-08-13 00:59:14,914 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5681 conditions, 1933 events. 750/1933 cut-off events. For 727/1639 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 16963 event pairs, 5 based on Foata normal form. 167/1956 useless extension candidates. Maximal degree in co-relation 5621. Up to 554 conditions per place. [2021-08-13 00:59:14,918 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 10 selfloop transitions, 9 changer transitions 191/266 dead transitions. [2021-08-13 00:59:14,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 266 transitions, 2187 flow [2021-08-13 00:59:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:59:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:59:14,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2021-08-13 00:59:14,920 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8841519925857275 [2021-08-13 00:59:14,920 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2021-08-13 00:59:14,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2021-08-13 00:59:14,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:14,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2021-08-13 00:59:14,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 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) [2021-08-13 00:59:14,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-08-13 00:59:14,924 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 83.0) internal successors, (1162), 14 states have internal predecessors, (1162), 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) [2021-08-13 00:59:14,924 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 72 predicate places. [2021-08-13 00:59:14,924 INFO L482 AbstractCegarLoop]: Abstraction has has 149 places, 266 transitions, 2187 flow [2021-08-13 00:59:14,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2021-08-13 00:59:14,925 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:14,925 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:14,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 00:59:14,925 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:14,926 INFO L82 PathProgramCache]: Analyzing trace with hash 758824611, now seen corresponding path program 1 times [2021-08-13 00:59:14,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:14,926 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264769494] [2021-08-13 00:59:14,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:14,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:14,974 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:14,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:14,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,981 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:14,986 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:59:14,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:59:14,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:14,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:59:15,005 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:59:15,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:15,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:15,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:15,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:15,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264769494] [2021-08-13 00:59:15,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264769494] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:15,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:15,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:59:15,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476539178] [2021-08-13 00:59:15,015 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:59:15,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:15,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:59:15,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:59:15,017 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 83 [2021-08-13 00:59:15,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 266 transitions, 2187 flow. Second operand has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2021-08-13 00:59:15,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:15,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 83 [2021-08-13 00:59:15,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:15,387 INFO L129 PetriNetUnfolder]: 670/1671 cut-off events. [2021-08-13 00:59:15,387 INFO L130 PetriNetUnfolder]: For 634/1929 co-relation queries the response was YES. [2021-08-13 00:59:15,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5714 conditions, 1671 events. 670/1671 cut-off events. For 634/1929 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 14566 event pairs, 0 based on Foata normal form. 212/1761 useless extension candidates. Maximal degree in co-relation 5651. Up to 522 conditions per place. [2021-08-13 00:59:15,395 INFO L132 encePairwiseOnDemand]: 73/83 looper letters, 4 selfloop transitions, 12 changer transitions 130/202 dead transitions. [2021-08-13 00:59:15,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 202 transitions, 1549 flow [2021-08-13 00:59:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 00:59:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 00:59:15,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1160 transitions. [2021-08-13 00:59:15,398 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8734939759036144 [2021-08-13 00:59:15,398 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1160 transitions. [2021-08-13 00:59:15,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1160 transitions. [2021-08-13 00:59:15,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:15,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1160 transitions. [2021-08-13 00:59:15,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.5) internal successors, (1160), 16 states have internal predecessors, (1160), 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) [2021-08-13 00:59:15,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 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) [2021-08-13 00:59:15,404 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 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) [2021-08-13 00:59:15,404 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2021-08-13 00:59:15,404 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 202 transitions, 1549 flow [2021-08-13 00:59:15,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 70.125) internal successors, (561), 8 states have internal predecessors, (561), 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) [2021-08-13 00:59:15,404 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:59:15,405 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 00:59:15,405 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-13 00:59:15,405 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:59:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:59:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash -513648258, now seen corresponding path program 1 times [2021-08-13 00:59:15,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:59:15,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208275456] [2021-08-13 00:59:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:59:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:59:15,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:15,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:15,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:15,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:15,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:15,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:59:15,434 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:59:15,434 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:59:15,445 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:15,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:15,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:15,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:59:15,460 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:59:15,461 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:59:15,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 00:59:15,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:59:15,461 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208275456] [2021-08-13 00:59:15,461 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208275456] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:59:15,461 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:59:15,461 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:59:15,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350334479] [2021-08-13 00:59:15,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:59:15,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:59:15,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:59:15,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:59:15,463 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 83 [2021-08-13 00:59:15,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 202 transitions, 1549 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2021-08-13 00:59:15,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:59:15,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 83 [2021-08-13 00:59:15,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:59:15,732 INFO L129 PetriNetUnfolder]: 882/2204 cut-off events. [2021-08-13 00:59:15,732 INFO L130 PetriNetUnfolder]: For 961/1701 co-relation queries the response was YES. [2021-08-13 00:59:15,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7633 conditions, 2204 events. 882/2204 cut-off events. For 961/1701 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 20640 event pairs, 0 based on Foata normal form. 23/2052 useless extension candidates. Maximal degree in co-relation 7566. Up to 709 conditions per place. [2021-08-13 00:59:15,743 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 0 selfloop transitions, 0 changer transitions 213/213 dead transitions. [2021-08-13 00:59:15,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 213 transitions, 1803 flow [2021-08-13 00:59:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-13 00:59:15,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-08-13 00:59:15,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 494 transitions. [2021-08-13 00:59:15,744 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8502581755593803 [2021-08-13 00:59:15,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 494 transitions. [2021-08-13 00:59:15,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 494 transitions. [2021-08-13 00:59:15,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:59:15,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 494 transitions. [2021-08-13 00:59:15,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 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) [2021-08-13 00:59:15,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-08-13 00:59:15,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-08-13 00:59:15,746 INFO L348 CegarLoopForPetriNet]: 77 programPoint places, 61 predicate places. [2021-08-13 00:59:15,746 INFO L482 AbstractCegarLoop]: Abstraction has has 138 places, 213 transitions, 1803 flow [2021-08-13 00:59:15,746 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 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) [2021-08-13 00:59:15,746 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown