/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 00:28:42,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 00:28:42,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 00:28:42,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 00:28:42,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 00:28:42,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 00:28:42,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 00:28:42,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 00:28:42,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 00:28:42,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 00:28:42,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 00:28:42,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 00:28:42,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 00:28:42,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 00:28:42,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 00:28:42,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 00:28:42,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 00:28:42,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 00:28:42,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 00:28:42,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 00:28:42,161 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 00:28:42,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 00:28:42,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 00:28:42,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 00:28:42,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 00:28:42,192 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 00:28:42,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 00:28:42,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 00:28:42,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 00:28:42,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 00:28:42,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 00:28:42,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 00:28:42,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 00:28:42,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 00:28:42,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 00:28:42,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 00:28:42,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 00:28:42,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 00:28:42,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 00:28:42,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 00:28:42,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 00:28:42,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 00:28:42,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 00:28:42,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 00:28:42,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 00:28:42,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 00:28:42,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 00:28:42,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 00:28:42,196 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 00:28:42,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 00:28:42,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 00:28:42,196 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 00:28:42,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 00:28:42,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 00:28:42,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 00:28:42,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 00:28:42,474 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 00:28:42,474 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 00:28:42,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-08-13 00:28:42,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6dd7d30/94110c25c3d24717a0addfff28acdaea/FLAG1ded2f4e4 [2021-08-13 00:28:42,976 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 00:28:42,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2021-08-13 00:28:42,993 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6dd7d30/94110c25c3d24717a0addfff28acdaea/FLAG1ded2f4e4 [2021-08-13 00:28:43,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d6dd7d30/94110c25c3d24717a0addfff28acdaea [2021-08-13 00:28:43,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 00:28:43,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 00:28:43,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 00:28:43,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 00:28:43,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 00:28:43,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695b0084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43, skipping insertion in model container [2021-08-13 00:28:43,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 00:28:43,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 00:28:43,212 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/safe005_tso.oepc.i[950,963] [2021-08-13 00:28:43,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:28:43,359 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 00:28:43,367 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/safe005_tso.oepc.i[950,963] [2021-08-13 00:28:43,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 00:28:43,452 INFO L208 MainTranslator]: Completed translation [2021-08-13 00:28:43,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43 WrapperNode [2021-08-13 00:28:43,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 00:28:43,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 00:28:43,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 00:28:43,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 00:28:43,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 00:28:43,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 00:28:43,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 00:28:43,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 00:28:43,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (1/1) ... [2021-08-13 00:28:43,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 00:28:43,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 00:28:43,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 00:28:43,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 00:28:43,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (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 00:28:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 00:28:43,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 00:28:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 00:28:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 00:28:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 00:28:43,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 00:28:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 00:28:43,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 00:28:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 00:28:43,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 00:28:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 00:28:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 00:28:43,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 00:28:43,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 00:28:43,612 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 00:28:43,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 00:28:43,932 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 00:28:43,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:28:43 BoogieIcfgContainer [2021-08-13 00:28:43,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 00:28:43,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 00:28:43,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 00:28:43,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 00:28:43,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 12:28:43" (1/3) ... [2021-08-13 00:28:43,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75428081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:28:43, skipping insertion in model container [2021-08-13 00:28:43,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 12:28:43" (2/3) ... [2021-08-13 00:28:43,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75428081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:28:43, skipping insertion in model container [2021-08-13 00:28:43,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:28:43" (3/3) ... [2021-08-13 00:28:43,938 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2021-08-13 00:28:43,941 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 00:28:43,941 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 00:28:43,942 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 00:28:43,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,957 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,957 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,958 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,959 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,960 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,961 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,962 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,962 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,962 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,966 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 00:28:43,968 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 00:28:43,982 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 00:28:43,994 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 00:28:43,994 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 00:28:43,995 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 00:28:43,995 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 00:28:43,995 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 00:28:43,995 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 00:28:43,995 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 00:28:43,995 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 00:28:44,001 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 00:28:44,031 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-13 00:28:44,031 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:28:44,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-13 00:28:44,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2021-08-13 00:28:44,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2021-08-13 00:28:44,046 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-08-13 00:28:44,046 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:28:44,047 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:44,047 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 00:28:44,047 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:44,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:44,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-08-13 00:28:44,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:44,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855789520] [2021-08-13 00:28:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:44,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:44,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:44,254 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:44,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:44,266 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:44,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:44,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,283 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:44,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:44,299 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:44,302 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 00:28:44,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:44,302 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855789520] [2021-08-13 00:28:44,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855789520] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:44,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:44,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:44,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582232] [2021-08-13 00:28:44,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:44,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:44,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:44,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:44,320 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 00:28:44,322 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 147 flow. Second operand has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:44,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:44,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 00:28:44,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:44,557 INFO L129 PetriNetUnfolder]: 183/473 cut-off events. [2021-08-13 00:28:44,557 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 00:28:44,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 473 events. 183/473 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2238 event pairs, 9 based on Foata normal form. 30/481 useless extension candidates. Maximal degree in co-relation 777. Up to 65 conditions per place. [2021-08-13 00:28:44,562 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 17 selfloop transitions, 6 changer transitions 42/118 dead transitions. [2021-08-13 00:28:44,562 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 118 transitions, 375 flow [2021-08-13 00:28:44,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:28:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:28:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 916 transitions. [2021-08-13 00:28:44,578 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8388278388278388 [2021-08-13 00:28:44,579 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 916 transitions. [2021-08-13 00:28:44,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 916 transitions. [2021-08-13 00:28:44,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:44,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 916 transitions. [2021-08-13 00:28:44,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.46153846153847) internal successors, (916), 13 states have internal predecessors, (916), 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 00:28:44,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:44,594 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:44,595 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2021-08-13 00:28:44,595 INFO L482 AbstractCegarLoop]: Abstraction has has 90 places, 118 transitions, 375 flow [2021-08-13 00:28:44,595 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 66.42857142857143) internal successors, (465), 7 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:44,595 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:44,596 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 00:28:44,596 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 00:28:44,596 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:44,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:44,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2048541138, now seen corresponding path program 1 times [2021-08-13 00:28:44,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:44,597 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075765597] [2021-08-13 00:28:44,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:44,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,691 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:44,693 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,693 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:44,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:44,700 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:44,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:44,714 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:44,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:44,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:44,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,741 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:44,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:44,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:44,750 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 00:28:44,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:44,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075765597] [2021-08-13 00:28:44,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075765597] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:44,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:44,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:28:44,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127982545] [2021-08-13 00:28:44,753 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:28:44,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:44,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:28:44,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:28:44,754 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 00:28:44,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 118 transitions, 375 flow. Second operand has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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 00:28:44,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:44,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 00:28:44,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:45,024 INFO L129 PetriNetUnfolder]: 198/558 cut-off events. [2021-08-13 00:28:45,024 INFO L130 PetriNetUnfolder]: For 32/410 co-relation queries the response was YES. [2021-08-13 00:28:45,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 558 events. 198/558 cut-off events. For 32/410 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3165 event pairs, 2 based on Foata normal form. 11/551 useless extension candidates. Maximal degree in co-relation 1302. Up to 110 conditions per place. [2021-08-13 00:28:45,027 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 17 selfloop transitions, 9 changer transitions 110/189 dead transitions. [2021-08-13 00:28:45,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 189 transitions, 931 flow [2021-08-13 00:28:45,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 00:28:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 00:28:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1191 transitions. [2021-08-13 00:28:45,029 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8340336134453782 [2021-08-13 00:28:45,029 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1191 transitions. [2021-08-13 00:28:45,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1191 transitions. [2021-08-13 00:28:45,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:45,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1191 transitions. [2021-08-13 00:28:45,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.05882352941177) internal successors, (1191), 17 states have internal predecessors, (1191), 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 00:28:45,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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 00:28:45,035 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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 00:28:45,035 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 28 predicate places. [2021-08-13 00:28:45,035 INFO L482 AbstractCegarLoop]: Abstraction has has 106 places, 189 transitions, 931 flow [2021-08-13 00:28:45,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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 00:28:45,036 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:45,036 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] [2021-08-13 00:28:45,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 00:28:45,036 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:45,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1665545972, now seen corresponding path program 1 times [2021-08-13 00:28:45,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:45,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26815423] [2021-08-13 00:28:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:45,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:45,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:45,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:45,095 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:45,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:45,109 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:45,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:45,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:45,134 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,135 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:45,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:45,145 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 00:28:45,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:45,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26815423] [2021-08-13 00:28:45,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26815423] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:45,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:45,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:28:45,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170912569] [2021-08-13 00:28:45,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:28:45,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:45,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:28:45,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:28:45,149 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2021-08-13 00:28:45,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 189 transitions, 931 flow. Second operand has 8 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 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 00:28:45,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:45,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2021-08-13 00:28:45,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:45,481 INFO L129 PetriNetUnfolder]: 320/928 cut-off events. [2021-08-13 00:28:45,482 INFO L130 PetriNetUnfolder]: For 165/2765 co-relation queries the response was YES. [2021-08-13 00:28:45,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 928 events. 320/928 cut-off events. For 165/2765 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6497 event pairs, 2 based on Foata normal form. 25/929 useless extension candidates. Maximal degree in co-relation 2803. Up to 152 conditions per place. [2021-08-13 00:28:45,485 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 18 selfloop transitions, 10 changer transitions 214/295 dead transitions. [2021-08-13 00:28:45,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 295 transitions, 2051 flow [2021-08-13 00:28:45,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 00:28:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 00:28:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1199 transitions. [2021-08-13 00:28:45,489 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8396358543417367 [2021-08-13 00:28:45,489 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1199 transitions. [2021-08-13 00:28:45,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1199 transitions. [2021-08-13 00:28:45,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:45,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1199 transitions. [2021-08-13 00:28:45,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.52941176470588) internal successors, (1199), 17 states have internal predecessors, (1199), 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 00:28:45,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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 00:28:45,493 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 84.0) internal successors, (1512), 18 states have internal predecessors, (1512), 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 00:28:45,494 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 44 predicate places. [2021-08-13 00:28:45,494 INFO L482 AbstractCegarLoop]: Abstraction has has 122 places, 295 transitions, 2051 flow [2021-08-13 00:28:45,494 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 66.75) internal successors, (534), 8 states have internal predecessors, (534), 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 00:28:45,494 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:45,494 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] [2021-08-13 00:28:45,494 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 00:28:45,494 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:45,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:45,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1971754568, now seen corresponding path program 2 times [2021-08-13 00:28:45,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:45,495 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356324898] [2021-08-13 00:28:45,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:45,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:45,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:45,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:45,542 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:45,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:45,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:45,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:45,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:45,570 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 00:28:45,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:45,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356324898] [2021-08-13 00:28:45,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356324898] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:45,571 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:45,571 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:45,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909245402] [2021-08-13 00:28:45,571 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:45,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:45,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:45,576 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 84 [2021-08-13 00:28:45,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 295 transitions, 2051 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 00:28:45,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:45,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 84 [2021-08-13 00:28:45,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:45,836 INFO L129 PetriNetUnfolder]: 457/1477 cut-off events. [2021-08-13 00:28:45,836 INFO L130 PetriNetUnfolder]: For 614/6428 co-relation queries the response was YES. [2021-08-13 00:28:45,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5348 conditions, 1477 events. 457/1477 cut-off events. For 614/6428 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 12750 event pairs, 2 based on Foata normal form. 34/1487 useless extension candidates. Maximal degree in co-relation 5298. Up to 265 conditions per place. [2021-08-13 00:28:45,842 INFO L132 encePairwiseOnDemand]: 77/84 looper letters, 17 selfloop transitions, 4 changer transitions 398/476 dead transitions. [2021-08-13 00:28:45,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 476 transitions, 4239 flow [2021-08-13 00:28:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-13 00:28:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-08-13 00:28:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 796 transitions. [2021-08-13 00:28:45,844 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8614718614718615 [2021-08-13 00:28:45,844 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 796 transitions. [2021-08-13 00:28:45,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 796 transitions. [2021-08-13 00:28:45,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:45,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 796 transitions. [2021-08-13 00:28:45,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.36363636363636) internal successors, (796), 11 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:45,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 00:28:45,849 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 84.0) internal successors, (1008), 12 states have internal predecessors, (1008), 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 00:28:45,849 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 54 predicate places. [2021-08-13 00:28:45,849 INFO L482 AbstractCegarLoop]: Abstraction has has 132 places, 476 transitions, 4239 flow [2021-08-13 00:28:45,850 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 00:28:45,850 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:45,850 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 00:28:45,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 00:28:45,877 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash -292325279, now seen corresponding path program 1 times [2021-08-13 00:28:45,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:45,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477146545] [2021-08-13 00:28:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:45,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:45,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:45,948 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:28:45,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:28:45,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:28:45,966 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:28:45,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:45,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:45,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:45,974 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 00:28:45,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:45,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477146545] [2021-08-13 00:28:45,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477146545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:45,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:45,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 00:28:45,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806411570] [2021-08-13 00:28:45,974 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 00:28:45,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:45,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 00:28:45,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 00:28:45,975 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 00:28:45,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 476 transitions, 4239 flow. Second operand has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 00:28:45,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:45,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 00:28:45,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:46,693 INFO L129 PetriNetUnfolder]: 2541/6270 cut-off events. [2021-08-13 00:28:46,693 INFO L130 PetriNetUnfolder]: For 1747/3616 co-relation queries the response was YES. [2021-08-13 00:28:46,715 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16923 conditions, 6270 events. 2541/6270 cut-off events. For 1747/3616 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 66240 event pairs, 41 based on Foata normal form. 44/5765 useless extension candidates. Maximal degree in co-relation 16870. Up to 1571 conditions per place. [2021-08-13 00:28:46,725 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 24 selfloop transitions, 17 changer transitions 301/472 dead transitions. [2021-08-13 00:28:46,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 472 transitions, 4041 flow [2021-08-13 00:28:46,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 00:28:46,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 00:28:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 743 transitions. [2021-08-13 00:28:46,727 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8845238095238095 [2021-08-13 00:28:46,727 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 743 transitions. [2021-08-13 00:28:46,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 743 transitions. [2021-08-13 00:28:46,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:46,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 743 transitions. [2021-08-13 00:28:46,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 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 00:28:46,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 00:28:46,733 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 84.0) internal successors, (924), 11 states have internal predecessors, (924), 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 00:28:46,733 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 63 predicate places. [2021-08-13 00:28:46,734 INFO L482 AbstractCegarLoop]: Abstraction has has 141 places, 472 transitions, 4041 flow [2021-08-13 00:28:46,734 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 71.16666666666667) internal successors, (427), 6 states have internal predecessors, (427), 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 00:28:46,734 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:46,734 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 00:28:46,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 00:28:46,734 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:46,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1818936032, now seen corresponding path program 1 times [2021-08-13 00:28:46,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:46,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305075501] [2021-08-13 00:28:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:46,801 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:46,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:46,802 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:46,802 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:46,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:46,804 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:46,808 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:28:46,810 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:28:46,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:46,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:28:46,871 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:28:46,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:46,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:46,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:46,879 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 00:28:46,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:46,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305075501] [2021-08-13 00:28:46,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305075501] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:46,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:46,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:46,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784152036] [2021-08-13 00:28:46,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:46,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:46,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:46,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:46,880 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 00:28:46,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 472 transitions, 4041 flow. Second operand has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 00:28:46,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:46,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 00:28:46,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:47,503 INFO L129 PetriNetUnfolder]: 2074/5460 cut-off events. [2021-08-13 00:28:47,503 INFO L130 PetriNetUnfolder]: For 1120/4110 co-relation queries the response was YES. [2021-08-13 00:28:47,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15415 conditions, 5460 events. 2074/5460 cut-off events. For 1120/4110 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 59323 event pairs, 2 based on Foata normal form. 572/5595 useless extension candidates. Maximal degree in co-relation 15359. Up to 1633 conditions per place. [2021-08-13 00:28:47,530 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 22 selfloop transitions, 44 changer transitions 266/406 dead transitions. [2021-08-13 00:28:47,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 406 transitions, 3315 flow [2021-08-13 00:28:47,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 00:28:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 00:28:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 967 transitions. [2021-08-13 00:28:47,533 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8855311355311355 [2021-08-13 00:28:47,533 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 967 transitions. [2021-08-13 00:28:47,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 967 transitions. [2021-08-13 00:28:47,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:47,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 967 transitions. [2021-08-13 00:28:47,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.38461538461539) internal successors, (967), 13 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 00:28:47,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:47,537 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 84.0) internal successors, (1176), 14 states have internal predecessors, (1176), 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 00:28:47,537 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 69 predicate places. [2021-08-13 00:28:47,537 INFO L482 AbstractCegarLoop]: Abstraction has has 147 places, 406 transitions, 3315 flow [2021-08-13 00:28:47,537 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 71.14285714285714) internal successors, (498), 7 states have internal predecessors, (498), 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 00:28:47,537 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:47,537 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] [2021-08-13 00:28:47,537 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 00:28:47,537 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:47,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:47,538 INFO L82 PathProgramCache]: Analyzing trace with hash 141473981, now seen corresponding path program 1 times [2021-08-13 00:28:47,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:47,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922200131] [2021-08-13 00:28:47,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:47,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:47,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:47,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:47,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:47,600 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:47,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:47,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:47,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:47,608 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 00:28:47,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 00:28:47,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:47,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 00:28:47,628 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 00:28:47,628 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:47,635 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:47,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:47,635 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 00:28:47,635 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:47,636 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922200131] [2021-08-13 00:28:47,636 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922200131] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:47,636 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:47,636 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 00:28:47,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478611568] [2021-08-13 00:28:47,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 00:28:47,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:47,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 00:28:47,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 00:28:47,638 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 84 [2021-08-13 00:28:47,638 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 406 transitions, 3315 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 00:28:47,638 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:47,638 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 84 [2021-08-13 00:28:47,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:48,243 INFO L129 PetriNetUnfolder]: 1901/4735 cut-off events. [2021-08-13 00:28:48,243 INFO L130 PetriNetUnfolder]: For 1357/5657 co-relation queries the response was YES. [2021-08-13 00:28:48,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16233 conditions, 4735 events. 1901/4735 cut-off events. For 1357/5657 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 50787 event pairs, 2 based on Foata normal form. 653/5006 useless extension candidates. Maximal degree in co-relation 16174. Up to 1536 conditions per place. [2021-08-13 00:28:48,262 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 19 selfloop transitions, 48 changer transitions 117/258 dead transitions. [2021-08-13 00:28:48,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 258 transitions, 2011 flow [2021-08-13 00:28:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 00:28:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 00:28:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1176 transitions. [2021-08-13 00:28:48,265 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-08-13 00:28:48,265 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1176 transitions. [2021-08-13 00:28:48,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1176 transitions. [2021-08-13 00:28:48,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:48,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1176 transitions. [2021-08-13 00:28:48,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.5) internal successors, (1176), 16 states have internal predecessors, (1176), 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 00:28:48,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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 00:28:48,269 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 84.0) internal successors, (1428), 17 states have internal predecessors, (1428), 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 00:28:48,270 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 72 predicate places. [2021-08-13 00:28:48,270 INFO L482 AbstractCegarLoop]: Abstraction has has 150 places, 258 transitions, 2011 flow [2021-08-13 00:28:48,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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 00:28:48,270 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 00:28:48,270 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, 1] [2021-08-13 00:28:48,270 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-13 00:28:48,270 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 00:28:48,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 00:28:48,271 INFO L82 PathProgramCache]: Analyzing trace with hash -515414656, now seen corresponding path program 1 times [2021-08-13 00:28:48,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 00:28:48,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239722567] [2021-08-13 00:28:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 00:28:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 00:28:48,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:48,296 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:48,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:48,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 00:28:48,300 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-08-13 00:28:48,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-08-13 00:28:48,308 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 00:28:48,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 00:28:48,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:48,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:48,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:48,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 00:28:48,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 00:28:48,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 00:28:48,339 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 00:28:48,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 00:28:48,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239722567] [2021-08-13 00:28:48,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239722567] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 00:28:48,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 00:28:48,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 00:28:48,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835203796] [2021-08-13 00:28:48,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 00:28:48,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 00:28:48,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 00:28:48,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 00:28:48,340 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 84 [2021-08-13 00:28:48,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 258 transitions, 2011 flow. Second operand has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 00:28:48,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 00:28:48,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 84 [2021-08-13 00:28:48,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 00:28:48,827 INFO L129 PetriNetUnfolder]: 2061/5313 cut-off events. [2021-08-13 00:28:48,827 INFO L130 PetriNetUnfolder]: For 1809/3549 co-relation queries the response was YES. [2021-08-13 00:28:48,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18119 conditions, 5313 events. 2061/5313 cut-off events. For 1809/3549 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 59241 event pairs, 0 based on Foata normal form. 11/4900 useless extension candidates. Maximal degree in co-relation 18053. Up to 1655 conditions per place. [2021-08-13 00:28:48,855 INFO L132 encePairwiseOnDemand]: 73/84 looper letters, 0 selfloop transitions, 0 changer transitions 279/279 dead transitions. [2021-08-13 00:28:48,855 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 279 transitions, 2469 flow [2021-08-13 00:28:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-13 00:28:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-08-13 00:28:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 533 transitions. [2021-08-13 00:28:48,856 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.7931547619047619 [2021-08-13 00:28:48,856 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 533 transitions. [2021-08-13 00:28:48,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 533 transitions. [2021-08-13 00:28:48,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 00:28:48,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 533 transitions. [2021-08-13 00:28:48,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 66.625) internal successors, (533), 8 states have internal predecessors, (533), 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 00:28:48,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 00:28:48,859 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 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 00:28:48,859 INFO L348 CegarLoopForPetriNet]: 78 programPoint places, 77 predicate places. [2021-08-13 00:28:48,859 INFO L482 AbstractCegarLoop]: Abstraction has has 155 places, 279 transitions, 2469 flow [2021-08-13 00:28:48,859 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 65.42857142857143) internal successors, (458), 7 states have internal predecessors, (458), 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 00:28:48,860 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown