/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-CovSimpl-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 16:13:08,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 16:13:08,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 16:13:08,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 16:13:08,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 16:13:08,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 16:13:08,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 16:13:08,597 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-CovSimpl-Hitting.epf [2021-08-13 16:13:08,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 16:13:08,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 16:13:08,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 16:13:08,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 16:13:08,619 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 16:13:08,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 16:13:08,619 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 16:13:08,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 16:13:08,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 16:13:08,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 16:13:08,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 16:13:08,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 16:13:08,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 16:13:08,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 16:13:08,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 16:13:08,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 16:13:08,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 16:13:08,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 16:13:08,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 16:13:08,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 16:13:08,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 16:13:08,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 16:13:08,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 16:13:08,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 16:13:08,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 16:13:08,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 16:13:08,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 16:13:08,624 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 16:13:08,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 16:13:08,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 16:13:08,625 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 16:13:08,625 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 16:13:08,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 16:13:08,625 INFO L138 SettingsManager]: * Simplify away covered predicates in OwickiGries annotation=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 16:13:08,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 16:13:08,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 16:13:08,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 16:13:08,981 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 16:13:08,982 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 16:13:08,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-08-13 16:13:09,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadac170c/8ccc4f3753e3418e970044071d924325/FLAGc0090ce3b [2021-08-13 16:13:09,543 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 16:13:09,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.opt.i [2021-08-13 16:13:09,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadac170c/8ccc4f3753e3418e970044071d924325/FLAGc0090ce3b [2021-08-13 16:13:10,019 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dadac170c/8ccc4f3753e3418e970044071d924325 [2021-08-13 16:13:10,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 16:13:10,022 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 16:13:10,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 16:13:10,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 16:13:10,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 16:13:10,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58705c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10, skipping insertion in model container [2021-08-13 16:13:10,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 16:13:10,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 16:13:10,266 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/safe017_tso.opt.i[949,962] [2021-08-13 16:13:10,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:13:10,448 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 16:13:10,460 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/safe017_tso.opt.i[949,962] [2021-08-13 16:13:10,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 16:13:10,570 INFO L208 MainTranslator]: Completed translation [2021-08-13 16:13:10,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10 WrapperNode [2021-08-13 16:13:10,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 16:13:10,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 16:13:10,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 16:13:10,572 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 16:13:10,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 16:13:10,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 16:13:10,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 16:13:10,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 16:13:10,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (1/1) ... [2021-08-13 16:13:10,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 16:13:10,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 16:13:10,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 16:13:10,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 16:13:10,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (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 16:13:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 16:13:10,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 16:13:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 16:13:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 16:13:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 16:13:10,743 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 16:13:10,743 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 16:13:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 16:13:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-13 16:13:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-13 16:13:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 16:13:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 16:13:10,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 16:13:10,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 16:13:10,745 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 16:13:11,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 16:13:11,162 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 16:13:11,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:13:11 BoogieIcfgContainer [2021-08-13 16:13:11,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 16:13:11,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 16:13:11,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 16:13:11,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 16:13:11,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 04:13:10" (1/3) ... [2021-08-13 16:13:11,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8b1eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:13:11, skipping insertion in model container [2021-08-13 16:13:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 04:13:10" (2/3) ... [2021-08-13 16:13:11,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8b1eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 04:13:11, skipping insertion in model container [2021-08-13 16:13:11,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 04:13:11" (3/3) ... [2021-08-13 16:13:11,173 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.opt.i [2021-08-13 16:13:11,177 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 16:13:11,178 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 16:13:11,179 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 16:13:11,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,215 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,215 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,216 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,216 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,217 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,217 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,218 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,218 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,220 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,221 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,222 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,222 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,222 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,223 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,223 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,227 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,233 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,234 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,234 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,239 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,240 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,242 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,242 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 16:13:11,245 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 16:13:11,267 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-13 16:13:11,296 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 16:13:11,296 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 16:13:11,296 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 16:13:11,296 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 16:13:11,296 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 16:13:11,297 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 16:13:11,297 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 16:13:11,297 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 16:13:11,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 89 places, 81 transitions, 177 flow [2021-08-13 16:13:11,359 INFO L129 PetriNetUnfolder]: 2/78 cut-off events. [2021-08-13 16:13:11,360 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:13:11,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 2/78 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. 0/75 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2021-08-13 16:13:11,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 81 transitions, 177 flow [2021-08-13 16:13:11,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 66 transitions, 141 flow [2021-08-13 16:13:11,398 INFO L129 PetriNetUnfolder]: 1/65 cut-off events. [2021-08-13 16:13:11,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:13:11,398 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:13:11,399 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] [2021-08-13 16:13:11,400 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:13:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:13:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash 217118883, now seen corresponding path program 1 times [2021-08-13 16:13:11,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:13:11,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060091228] [2021-08-13 16:13:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:13:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:13:11,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:11,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:11,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:11,674 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:11,689 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:13:11,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:13:11,704 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:13:11,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:13:11,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:11,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:11,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:11,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:11,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:11,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:11,750 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 16:13:11,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:13:11,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060091228] [2021-08-13 16:13:11,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060091228] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:13:11,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:13:11,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:13:11,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21709358] [2021-08-13 16:13:11,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:13:11,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:13:11,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:13:11,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:13:11,775 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-08-13 16:13:11,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 141 flow. Second operand has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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 16:13:11,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:13:11,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-08-13 16:13:11,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:13:12,194 INFO L129 PetriNetUnfolder]: 294/738 cut-off events. [2021-08-13 16:13:12,194 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 16:13:12,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 738 events. 294/738 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4284 event pairs, 22 based on Foata normal form. 29/740 useless extension candidates. Maximal degree in co-relation 1225. Up to 135 conditions per place. [2021-08-13 16:13:12,205 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 19 selfloop transitions, 6 changer transitions 47/123 dead transitions. [2021-08-13 16:13:12,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 123 transitions, 399 flow [2021-08-13 16:13:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:13:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:13:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 897 transitions. [2021-08-13 16:13:12,226 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2021-08-13 16:13:12,227 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 897 transitions. [2021-08-13 16:13:12,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 897 transitions. [2021-08-13 16:13:12,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:13:12,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 897 transitions. [2021-08-13 16:13:12,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.0) internal successors, (897), 13 states have internal predecessors, (897), 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 16:13:12,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:12,251 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:12,252 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 12 predicate places. [2021-08-13 16:13:12,252 INFO L482 AbstractCegarLoop]: Abstraction has has 87 places, 123 transitions, 399 flow [2021-08-13 16:13:12,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.28571428571429) internal successors, (450), 7 states have internal predecessors, (450), 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 16:13:12,253 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:13:12,254 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 16:13:12,255 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 16:13:12,255 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:13:12,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:13:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash -760639326, now seen corresponding path program 1 times [2021-08-13 16:13:12,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:13:12,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128445061] [2021-08-13 16:13:12,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:13:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:13:12,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:12,385 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,386 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:12,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:12,403 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:13:12,405 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:13:12,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:12,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,445 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:12,456 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,457 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:12,459 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 16:13:12,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:13:12,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128445061] [2021-08-13 16:13:12,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128445061] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:13:12,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:13:12,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:13:12,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188092744] [2021-08-13 16:13:12,462 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:13:12,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:13:12,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:13:12,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:13:12,468 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 81 [2021-08-13 16:13:12,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 123 transitions, 399 flow. Second operand has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 16:13:12,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:13:12,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 81 [2021-08-13 16:13:12,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:13:12,847 INFO L129 PetriNetUnfolder]: 362/1084 cut-off events. [2021-08-13 16:13:12,848 INFO L130 PetriNetUnfolder]: For 134/695 co-relation queries the response was YES. [2021-08-13 16:13:12,851 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1084 events. 362/1084 cut-off events. For 134/695 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8131 event pairs, 15 based on Foata normal form. 18/1074 useless extension candidates. Maximal degree in co-relation 2236. Up to 157 conditions per place. [2021-08-13 16:13:12,854 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 16 selfloop transitions, 5 changer transitions 153/231 dead transitions. [2021-08-13 16:13:12,854 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 231 transitions, 1149 flow [2021-08-13 16:13:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:13:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:13:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 911 transitions. [2021-08-13 16:13:12,856 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8651471984805318 [2021-08-13 16:13:12,857 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 911 transitions. [2021-08-13 16:13:12,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 911 transitions. [2021-08-13 16:13:12,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:13:12,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 911 transitions. [2021-08-13 16:13:12,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.07692307692308) internal successors, (911), 13 states have internal predecessors, (911), 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 16:13:12,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:12,863 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:12,863 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2021-08-13 16:13:12,863 INFO L482 AbstractCegarLoop]: Abstraction has has 99 places, 231 transitions, 1149 flow [2021-08-13 16:13:12,864 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 67.28571428571429) internal successors, (471), 7 states have internal predecessors, (471), 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 16:13:12,864 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:13:12,864 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:13:12,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 16:13:12,864 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:13:12,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:13:12,866 INFO L82 PathProgramCache]: Analyzing trace with hash 90158115, now seen corresponding path program 1 times [2021-08-13 16:13:12,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:13:12,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965930690] [2021-08-13 16:13:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:13:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:13:12,977 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:12,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:12,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:12,984 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-08-13 16:13:13,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-08-13 16:13:13,021 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:13:13,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:13:13,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:13,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:13,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:13,064 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 16:13:13,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:13:13,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965930690] [2021-08-13 16:13:13,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965930690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:13:13,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:13:13,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:13:13,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667583754] [2021-08-13 16:13:13,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:13:13,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:13:13,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:13:13,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:13:13,068 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 81 [2021-08-13 16:13:13,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 231 transitions, 1149 flow. Second operand has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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 16:13:13,070 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:13:13,070 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 81 [2021-08-13 16:13:13,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:13:13,426 INFO L129 PetriNetUnfolder]: 533/1599 cut-off events. [2021-08-13 16:13:13,429 INFO L130 PetriNetUnfolder]: For 315/2882 co-relation queries the response was YES. [2021-08-13 16:13:13,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4434 conditions, 1599 events. 533/1599 cut-off events. For 315/2882 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13623 event pairs, 5 based on Foata normal form. 21/1600 useless extension candidates. Maximal degree in co-relation 4394. Up to 247 conditions per place. [2021-08-13 16:13:13,438 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 18 selfloop transitions, 13 changer transitions 363/445 dead transitions. [2021-08-13 16:13:13,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 445 transitions, 3157 flow [2021-08-13 16:13:13,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:13:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:13:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 902 transitions. [2021-08-13 16:13:13,446 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8566001899335233 [2021-08-13 16:13:13,446 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 902 transitions. [2021-08-13 16:13:13,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 902 transitions. [2021-08-13 16:13:13,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:13:13,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 902 transitions. [2021-08-13 16:13:13,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 69.38461538461539) internal successors, (902), 13 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 16:13:13,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:13,450 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:13,451 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 36 predicate places. [2021-08-13 16:13:13,451 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 445 transitions, 3157 flow [2021-08-13 16:13:13,451 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 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 16:13:13,451 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:13:13,451 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:13:13,451 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 16:13:13,451 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:13:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:13:13,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1422840637, now seen corresponding path program 1 times [2021-08-13 16:13:13,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:13:13,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942037824] [2021-08-13 16:13:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:13:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:13:13,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:13,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:13,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:13,552 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 16:13:13,553 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 16:13:13,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:13,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:13,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:13,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:13,623 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 16:13:13,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:13:13,624 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942037824] [2021-08-13 16:13:13,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942037824] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:13:13,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:13:13,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:13:13,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436930496] [2021-08-13 16:13:13,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:13:13,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:13:13,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:13:13,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:13:13,627 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 81 [2021-08-13 16:13:13,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 445 transitions, 3157 flow. Second operand has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 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 16:13:13,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:13:13,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 81 [2021-08-13 16:13:13,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:13:14,150 INFO L129 PetriNetUnfolder]: 574/2071 cut-off events. [2021-08-13 16:13:14,151 INFO L130 PetriNetUnfolder]: For 992/5988 co-relation queries the response was YES. [2021-08-13 16:13:14,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6419 conditions, 2071 events. 574/2071 cut-off events. For 992/5988 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 20438 event pairs, 0 based on Foata normal form. 52/2106 useless extension candidates. Maximal degree in co-relation 6375. Up to 431 conditions per place. [2021-08-13 16:13:14,163 INFO L132 encePairwiseOnDemand]: 74/81 looper letters, 20 selfloop transitions, 4 changer transitions 502/584 dead transitions. [2021-08-13 16:13:14,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 584 transitions, 5229 flow [2021-08-13 16:13:14,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 16:13:14,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 16:13:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1175 transitions. [2021-08-13 16:13:14,167 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8533042846768337 [2021-08-13 16:13:14,167 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1175 transitions. [2021-08-13 16:13:14,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1175 transitions. [2021-08-13 16:13:14,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:13:14,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1175 transitions. [2021-08-13 16:13:14,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 69.11764705882354) internal successors, (1175), 17 states have internal predecessors, (1175), 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 16:13:14,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 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 16:13:14,176 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 81.0) internal successors, (1458), 18 states have internal predecessors, (1458), 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 16:13:14,176 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 52 predicate places. [2021-08-13 16:13:14,176 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 584 transitions, 5229 flow [2021-08-13 16:13:14,176 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 67.42857142857143) internal successors, (472), 7 states have internal predecessors, (472), 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 16:13:14,176 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:13:14,177 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:13:14,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 16:13:14,177 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:13:14,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:13:14,177 INFO L82 PathProgramCache]: Analyzing trace with hash -352575068, now seen corresponding path program 1 times [2021-08-13 16:13:14,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:13:14,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842363241] [2021-08-13 16:13:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:13:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:13:14,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:14,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:14,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:14,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:14,258 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:13:14,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:13:14,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:14,276 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:13:14,284 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:13:14,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:14,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:14,294 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:14,294 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 16:13:14,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:13:14,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842363241] [2021-08-13 16:13:14,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842363241] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:13:14,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:13:14,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-13 16:13:14,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062963238] [2021-08-13 16:13:14,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-08-13 16:13:14,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:13:14,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-13 16:13:14,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-13 16:13:14,297 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-08-13 16:13:14,298 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 584 transitions, 5229 flow. Second operand has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 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 16:13:14,298 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:13:14,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-08-13 16:13:14,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:13:15,096 INFO L129 PetriNetUnfolder]: 1639/4544 cut-off events. [2021-08-13 16:13:15,096 INFO L130 PetriNetUnfolder]: For 1361/1898 co-relation queries the response was YES. [2021-08-13 16:13:15,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11795 conditions, 4544 events. 1639/4544 cut-off events. For 1361/1898 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 47185 event pairs, 55 based on Foata normal form. 30/4256 useless extension candidates. Maximal degree in co-relation 11748. Up to 1172 conditions per place. [2021-08-13 16:13:15,124 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 15 selfloop transitions, 13 changer transitions 336/464 dead transitions. [2021-08-13 16:13:15,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 464 transitions, 3883 flow [2021-08-13 16:13:15,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-13 16:13:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-08-13 16:13:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 713 transitions. [2021-08-13 16:13:15,126 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8802469135802469 [2021-08-13 16:13:15,127 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 713 transitions. [2021-08-13 16:13:15,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 713 transitions. [2021-08-13 16:13:15,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:13:15,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 713 transitions. [2021-08-13 16:13:15,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 71.3) internal successors, (713), 10 states have internal predecessors, (713), 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 16:13:15,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 16:13:15,130 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 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 16:13:15,131 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 61 predicate places. [2021-08-13 16:13:15,131 INFO L482 AbstractCegarLoop]: Abstraction has has 136 places, 464 transitions, 3883 flow [2021-08-13 16:13:15,131 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 68.16666666666667) internal successors, (409), 6 states have internal predecessors, (409), 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 16:13:15,131 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:13:15,131 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 16:13:15,132 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-13 16:13:15,132 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:13:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:13:15,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1336847416, now seen corresponding path program 1 times [2021-08-13 16:13:15,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:13:15,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338760124] [2021-08-13 16:13:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:13:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:13:15,170 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:15,171 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,171 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:15,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:15,179 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:13:15,181 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:13:15,196 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:13:15,206 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:13:15,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:15,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:15,217 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 16:13:15,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:13:15,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338760124] [2021-08-13 16:13:15,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338760124] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:13:15,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:13:15,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 16:13:15,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943514265] [2021-08-13 16:13:15,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 16:13:15,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:13:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 16:13:15,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 16:13:15,224 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-08-13 16:13:15,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 464 transitions, 3883 flow. Second operand has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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 16:13:15,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:13:15,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-08-13 16:13:15,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:13:15,778 INFO L129 PetriNetUnfolder]: 1157/3009 cut-off events. [2021-08-13 16:13:15,778 INFO L130 PetriNetUnfolder]: For 705/2079 co-relation queries the response was YES. [2021-08-13 16:13:15,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8657 conditions, 3009 events. 1157/3009 cut-off events. For 705/2079 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 28790 event pairs, 0 based on Foata normal form. 290/3071 useless extension candidates. Maximal degree in co-relation 8607. Up to 927 conditions per place. [2021-08-13 16:13:15,793 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 6 selfloop transitions, 9 changer transitions 216/298 dead transitions. [2021-08-13 16:13:15,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 298 transitions, 2241 flow [2021-08-13 16:13:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 16:13:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 16:13:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 928 transitions. [2021-08-13 16:13:15,796 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8812915479582146 [2021-08-13 16:13:15,797 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 928 transitions. [2021-08-13 16:13:15,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 928 transitions. [2021-08-13 16:13:15,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:13:15,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 928 transitions. [2021-08-13 16:13:15,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.38461538461539) internal successors, (928), 13 states have internal predecessors, (928), 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 16:13:15,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:15,801 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 81.0) internal successors, (1134), 14 states have internal predecessors, (1134), 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 16:13:15,802 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 67 predicate places. [2021-08-13 16:13:15,802 INFO L482 AbstractCegarLoop]: Abstraction has has 142 places, 298 transitions, 2241 flow [2021-08-13 16:13:15,802 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 68.14285714285714) internal successors, (477), 7 states have internal predecessors, (477), 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 16:13:15,802 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 16:13:15,802 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-13 16:13:15,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-13 16:13:15,803 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 16:13:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 16:13:15,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2063972783, now seen corresponding path program 1 times [2021-08-13 16:13:15,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 16:13:15,803 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221719387] [2021-08-13 16:13:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 16:13:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 16:13:15,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:15,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:15,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:15,874 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 16:13:15,883 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-08-13 16:13:15,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-08-13 16:13:15,900 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,900 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-08-13 16:13:15,908 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-08-13 16:13:15,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 16:13:15,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 16:13:15,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 16:13:15,920 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 16:13:15,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 16:13:15,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221719387] [2021-08-13 16:13:15,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221719387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 16:13:15,921 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 16:13:15,921 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-13 16:13:15,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186196954] [2021-08-13 16:13:15,921 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-08-13 16:13:15,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 16:13:15,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-13 16:13:15,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-13 16:13:15,923 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 81 [2021-08-13 16:13:15,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 298 transitions, 2241 flow. Second operand has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 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 16:13:15,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 16:13:15,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 81 [2021-08-13 16:13:15,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 16:13:16,470 INFO L129 PetriNetUnfolder]: 1055/2657 cut-off events. [2021-08-13 16:13:16,470 INFO L130 PetriNetUnfolder]: For 729/2677 co-relation queries the response was YES. [2021-08-13 16:13:16,482 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9087 conditions, 2657 events. 1055/2657 cut-off events. For 729/2677 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 25466 event pairs, 0 based on Foata normal form. 341/2800 useless extension candidates. Maximal degree in co-relation 9034. Up to 851 conditions per place. [2021-08-13 16:13:16,486 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 0 selfloop transitions, 0 changer transitions 214/214 dead transitions. [2021-08-13 16:13:16,486 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 214 transitions, 1585 flow [2021-08-13 16:13:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-13 16:13:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-08-13 16:13:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1128 transitions. [2021-08-13 16:13:16,490 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8703703703703703 [2021-08-13 16:13:16,490 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1128 transitions. [2021-08-13 16:13:16,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1128 transitions. [2021-08-13 16:13:16,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 16:13:16,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1128 transitions. [2021-08-13 16:13:16,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 70.5) internal successors, (1128), 16 states have internal predecessors, (1128), 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 16:13:16,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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 16:13:16,497 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 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 16:13:16,497 INFO L348 CegarLoopForPetriNet]: 75 programPoint places, 65 predicate places. [2021-08-13 16:13:16,497 INFO L482 AbstractCegarLoop]: Abstraction has has 140 places, 214 transitions, 1585 flow [2021-08-13 16:13:16,498 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 68.125) internal successors, (545), 8 states have internal predecessors, (545), 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 16:13:16,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown