/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 06:51:34,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 06:51:34,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 06:51:34,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-13 06:51:34,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-13 06:51:34,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-13 06:51:34,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-13 06:51:34,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-13 06:51:34,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-13 06:51:34,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-13 06:51:34,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-13 06:51:34,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-13 06:51:34,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 06:51:34,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 06:51:34,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 06:51:34,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 06:51:34,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 06:51:34,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 06:51:34,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 06:51:34,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 06:51:34,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 06:51:34,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 06:51:34,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 06:51:34,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 06:51:34,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 06:51:34,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-13 06:51:34,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-13 06:51:34,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-13 06:51:34,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-13 06:51:34,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-13 06:51:34,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-13 06:51:34,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-13 06:51:34,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-13 06:51:34,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-13 06:51:34,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-13 06:51:34,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-13 06:51:34,330 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.epf [2021-08-13 06:51:34,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 06:51:34,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 06:51:34,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 06:51:34,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 06:51:34,355 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 06:51:34,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 06:51:34,355 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 06:51:34,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 06:51:34,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 06:51:34,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 06:51:34,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 06:51:34,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 06:51:34,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 06:51:34,357 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 06:51:34,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 06:51:34,357 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 06:51:34,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 06:51:34,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 06:51:34,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 06:51:34,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 06:51:34,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 06:51:34,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 06:51:34,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 06:51:34,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 06:51:34,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 06:51:34,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 06:51:34,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 06:51:34,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 06:51:34,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 06:51:34,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 06:51:34,359 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 06:51:34,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-13 06:51:34,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 06:51:34,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 06:51:34,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 06:51:34,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 06:51:34,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-13 06:51:34,679 INFO L275 PluginConnector]: CDTParser initialized [2021-08-13 06:51:34,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin000_pso.oepc.i [2021-08-13 06:51:34,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39439891/a21d57ca3c55450eba56d50556ca74c3/FLAG61b662140 [2021-08-13 06:51:35,183 INFO L306 CDTParser]: Found 1 translation units. [2021-08-13 06:51:35,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin000_pso.oepc.i [2021-08-13 06:51:35,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39439891/a21d57ca3c55450eba56d50556ca74c3/FLAG61b662140 [2021-08-13 06:51:35,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c39439891/a21d57ca3c55450eba56d50556ca74c3 [2021-08-13 06:51:35,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 06:51:35,212 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-13 06:51:35,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-13 06:51:35,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-13 06:51:35,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-13 06:51:35,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,218 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd1d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35, skipping insertion in model container [2021-08-13 06:51:35,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-13 06:51:35,250 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-13 06:51:35,377 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/thin000_pso.oepc.i[950,963] [2021-08-13 06:51:35,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:51:35,523 INFO L203 MainTranslator]: Completed pre-run [2021-08-13 06:51:35,534 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/thin000_pso.oepc.i[950,963] [2021-08-13 06:51:35,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-13 06:51:35,692 INFO L208 MainTranslator]: Completed translation [2021-08-13 06:51:35,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35 WrapperNode [2021-08-13 06:51:35,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-13 06:51:35,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 06:51:35,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 06:51:35,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 06:51:35,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 06:51:35,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 06:51:35,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 06:51:35,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 06:51:35,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (1/1) ... [2021-08-13 06:51:35,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 06:51:35,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 06:51:35,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 06:51:35,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 06:51:35,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (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 06:51:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-13 06:51:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-13 06:51:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-13 06:51:35,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-13 06:51:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-13 06:51:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-13 06:51:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-13 06:51:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-13 06:51:35,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-13 06:51:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-13 06:51:35,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 06:51:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 06:51:35,828 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 06:51:36,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 06:51:36,146 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-13 06:51:36,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:51:36 BoogieIcfgContainer [2021-08-13 06:51:36,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 06:51:36,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 06:51:36,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 06:51:36,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 06:51:36,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.08 06:51:35" (1/3) ... [2021-08-13 06:51:36,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593abb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:51:36, skipping insertion in model container [2021-08-13 06:51:36,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.08 06:51:35" (2/3) ... [2021-08-13 06:51:36,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593abb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 06:51:36, skipping insertion in model container [2021-08-13 06:51:36,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 06:51:36" (3/3) ... [2021-08-13 06:51:36,153 INFO L111 eAbstractionObserver]: Analyzing ICFG thin000_pso.oepc.i [2021-08-13 06:51:36,158 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 06:51:36,159 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 06:51:36,159 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 06:51:36,179 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,180 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,180 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,180 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,180 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,180 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,181 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,181 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,182 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,182 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,182 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,182 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,183 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,183 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,190 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,190 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 06:51:36,192 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-13 06:51:36,212 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 06:51:36,237 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 06:51:36,237 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 06:51:36,237 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 06:51:36,237 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 06:51:36,237 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 06:51:36,238 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 06:51:36,238 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 06:51:36,238 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 06:51:36,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 144 flow [2021-08-13 06:51:36,302 INFO L129 PetriNetUnfolder]: 2/65 cut-off events. [2021-08-13 06:51:36,302 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:51:36,314 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 65 events. 2/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-08-13 06:51:36,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 144 flow [2021-08-13 06:51:36,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 55 transitions, 116 flow [2021-08-13 06:51:36,343 INFO L129 PetriNetUnfolder]: 1/54 cut-off events. [2021-08-13 06:51:36,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:51:36,343 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:51:36,344 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] [2021-08-13 06:51:36,344 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:51:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:51:36,349 INFO L82 PathProgramCache]: Analyzing trace with hash -593502858, now seen corresponding path program 1 times [2021-08-13 06:51:36,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:51:36,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756932593] [2021-08-13 06:51:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:51:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:51:36,666 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:36,667 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:36,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:36,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:51:36,686 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 06:51:36,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:36,707 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:51:36,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:51:36,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:36,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:36,750 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:36,751 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:36,781 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:36,784 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:36,786 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 06:51:36,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:51:36,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756932593] [2021-08-13 06:51:36,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756932593] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:51:36,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:51:36,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:51:36,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902186981] [2021-08-13 06:51:36,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:51:36,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:51:36,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:51:36,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:51:36,815 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-08-13 06:51:36,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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 06:51:36,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:51:36,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-08-13 06:51:36,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:51:37,020 INFO L129 PetriNetUnfolder]: 20/113 cut-off events. [2021-08-13 06:51:37,020 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-13 06:51:37,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 113 events. 20/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 298 event pairs, 5 based on Foata normal form. 6/116 useless extension candidates. Maximal degree in co-relation 143. Up to 19 conditions per place. [2021-08-13 06:51:37,023 INFO L132 encePairwiseOnDemand]: 60/67 looper letters, 9 selfloop transitions, 2 changer transitions 16/71 dead transitions. [2021-08-13 06:51:37,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 202 flow [2021-08-13 06:51:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-13 06:51:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-08-13 06:51:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 508 transitions. [2021-08-13 06:51:37,043 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8424543946932007 [2021-08-13 06:51:37,044 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 508 transitions. [2021-08-13 06:51:37,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 508 transitions. [2021-08-13 06:51:37,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:51:37,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 508 transitions. [2021-08-13 06:51:37,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.44444444444444) internal successors, (508), 9 states have internal predecessors, (508), 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 06:51:37,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 06:51:37,074 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 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 06:51:37,075 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 8 predicate places. [2021-08-13 06:51:37,075 INFO L482 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 202 flow [2021-08-13 06:51:37,076 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.142857142857146) internal successors, (379), 7 states have internal predecessors, (379), 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 06:51:37,076 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:51:37,076 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] [2021-08-13 06:51:37,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 06:51:37,076 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:51:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:51:37,077 INFO L82 PathProgramCache]: Analyzing trace with hash -293216521, now seen corresponding path program 1 times [2021-08-13 06:51:37,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:51:37,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573099686] [2021-08-13 06:51:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:51:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:51:37,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:37,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:51:37,160 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 06:51:37,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:37,169 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:51:37,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:51:37,197 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:37,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:37,224 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,225 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:37,226 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 06:51:37,226 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:51:37,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573099686] [2021-08-13 06:51:37,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573099686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:51:37,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:51:37,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:51:37,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946922587] [2021-08-13 06:51:37,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:51:37,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:51:37,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:51:37,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:51:37,231 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-08-13 06:51:37,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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 06:51:37,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:51:37,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-08-13 06:51:37,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:51:37,602 INFO L129 PetriNetUnfolder]: 54/309 cut-off events. [2021-08-13 06:51:37,602 INFO L130 PetriNetUnfolder]: For 43/77 co-relation queries the response was YES. [2021-08-13 06:51:37,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 309 events. 54/309 cut-off events. For 43/77 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1847 event pairs, 0 based on Foata normal form. 6/313 useless extension candidates. Maximal degree in co-relation 540. Up to 37 conditions per place. [2021-08-13 06:51:37,604 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 14 selfloop transitions, 5 changer transitions 85/146 dead transitions. [2021-08-13 06:51:37,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 146 transitions, 696 flow [2021-08-13 06:51:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 06:51:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 06:51:37,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 929 transitions. [2021-08-13 06:51:37,608 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8156277436347673 [2021-08-13 06:51:37,608 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 929 transitions. [2021-08-13 06:51:37,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 929 transitions. [2021-08-13 06:51:37,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:51:37,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 929 transitions. [2021-08-13 06:51:37,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.64705882352941) internal successors, (929), 17 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-13 06:51:37,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 06:51:37,614 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 06:51:37,615 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 24 predicate places. [2021-08-13 06:51:37,615 INFO L482 AbstractCegarLoop]: Abstraction has has 85 places, 146 transitions, 696 flow [2021-08-13 06:51:37,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.42857142857143) internal successors, (367), 7 states have internal predecessors, (367), 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 06:51:37,615 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:51:37,616 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] [2021-08-13 06:51:37,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 06:51:37,616 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:51:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:51:37,616 INFO L82 PathProgramCache]: Analyzing trace with hash 248634582, now seen corresponding path program 1 times [2021-08-13 06:51:37,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:51:37,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939532359] [2021-08-13 06:51:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:51:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:51:37,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:37,662 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:51:37,667 INFO L142 QuantifierPusher]: treesize reduction 3, result has 75.0 percent of original size [2021-08-13 06:51:37,668 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:37,676 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:51:37,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:51:37,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:37,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:37,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:37,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:37,721 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 06:51:37,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:51:37,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939532359] [2021-08-13 06:51:37,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939532359] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:51:37,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:51:37,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:51:37,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067951490] [2021-08-13 06:51:37,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:51:37,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:51:37,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:51:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:51:37,725 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 67 [2021-08-13 06:51:37,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 146 transitions, 696 flow. Second operand has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 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 06:51:37,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:51:37,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 67 [2021-08-13 06:51:37,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:51:38,086 INFO L129 PetriNetUnfolder]: 133/538 cut-off events. [2021-08-13 06:51:38,087 INFO L130 PetriNetUnfolder]: For 284/565 co-relation queries the response was YES. [2021-08-13 06:51:38,088 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 538 events. 133/538 cut-off events. For 284/565 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3799 event pairs, 0 based on Foata normal form. 21/556 useless extension candidates. Maximal degree in co-relation 1236. Up to 89 conditions per place. [2021-08-13 06:51:38,090 INFO L132 encePairwiseOnDemand]: 58/67 looper letters, 19 selfloop transitions, 5 changer transitions 165/231 dead transitions. [2021-08-13 06:51:38,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 231 transitions, 1542 flow [2021-08-13 06:51:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-13 06:51:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-08-13 06:51:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 927 transitions. [2021-08-13 06:51:38,093 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8138718173836699 [2021-08-13 06:51:38,093 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 927 transitions. [2021-08-13 06:51:38,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 927 transitions. [2021-08-13 06:51:38,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:51:38,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 927 transitions. [2021-08-13 06:51:38,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.529411764705884) internal successors, (927), 17 states have internal predecessors, (927), 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 06:51:38,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 06:51:38,098 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 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 06:51:38,098 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 40 predicate places. [2021-08-13 06:51:38,098 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 231 transitions, 1542 flow [2021-08-13 06:51:38,099 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 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 06:51:38,099 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:51:38,099 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] [2021-08-13 06:51:38,099 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-13 06:51:38,099 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:51:38,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:51:38,100 INFO L82 PathProgramCache]: Analyzing trace with hash -635467116, now seen corresponding path program 1 times [2021-08-13 06:51:38,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:51:38,100 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726719373] [2021-08-13 06:51:38,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:51:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:51:38,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:38,140 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:51:38,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:51:38,148 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:51:38,148 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:51:38,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:38,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:38,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,187 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:38,187 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 06:51:38,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:51:38,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726719373] [2021-08-13 06:51:38,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726719373] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:51:38,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:51:38,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:51:38,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109728959] [2021-08-13 06:51:38,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:51:38,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:51:38,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:51:38,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:51:38,190 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-08-13 06:51:38,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 231 transitions, 1542 flow. Second operand has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 06:51:38,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:51:38,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-08-13 06:51:38,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:51:38,408 INFO L129 PetriNetUnfolder]: 135/508 cut-off events. [2021-08-13 06:51:38,409 INFO L130 PetriNetUnfolder]: For 447/976 co-relation queries the response was YES. [2021-08-13 06:51:38,410 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1516 conditions, 508 events. 135/508 cut-off events. For 447/976 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3354 event pairs, 0 based on Foata normal form. 35/540 useless extension candidates. Maximal degree in co-relation 1472. Up to 92 conditions per place. [2021-08-13 06:51:38,411 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 11 selfloop transitions, 4 changer transitions 185/243 dead transitions. [2021-08-13 06:51:38,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 243 transitions, 1964 flow [2021-08-13 06:51:38,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:51:38,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:51:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 722 transitions. [2021-08-13 06:51:38,414 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8289322617680827 [2021-08-13 06:51:38,414 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 722 transitions. [2021-08-13 06:51:38,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 722 transitions. [2021-08-13 06:51:38,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:51:38,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 722 transitions. [2021-08-13 06:51:38,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 55.53846153846154) internal successors, (722), 13 states have internal predecessors, (722), 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 06:51:38,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 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 06:51:38,418 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 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 06:51:38,418 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 52 predicate places. [2021-08-13 06:51:38,418 INFO L482 AbstractCegarLoop]: Abstraction has has 113 places, 243 transitions, 1964 flow [2021-08-13 06:51:38,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 06:51:38,418 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 06:51:38,418 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] [2021-08-13 06:51:38,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-13 06:51:38,419 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-08-13 06:51:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 06:51:38,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1556709704, now seen corresponding path program 1 times [2021-08-13 06:51:38,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 06:51:38,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745421798] [2021-08-13 06:51:38,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 06:51:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 06:51:38,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:38,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:51:38,499 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 06:51:38,506 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-08-13 06:51:38,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-08-13 06:51:38,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:38,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-08-13 06:51:38,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 06:51:38,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 06:51:38,544 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 06:51:38,544 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 06:51:38,544 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745421798] [2021-08-13 06:51:38,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745421798] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 06:51:38,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 06:51:38,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-13 06:51:38,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518133733] [2021-08-13 06:51:38,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-08-13 06:51:38,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 06:51:38,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-13 06:51:38,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-13 06:51:38,547 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 67 [2021-08-13 06:51:38,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 243 transitions, 1964 flow. Second operand has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 06:51:38,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 06:51:38,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 67 [2021-08-13 06:51:38,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 06:51:38,748 INFO L129 PetriNetUnfolder]: 137/464 cut-off events. [2021-08-13 06:51:38,748 INFO L130 PetriNetUnfolder]: For 570/1279 co-relation queries the response was YES. [2021-08-13 06:51:38,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 464 events. 137/464 cut-off events. For 570/1279 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2862 event pairs, 0 based on Foata normal form. 39/500 useless extension candidates. Maximal degree in co-relation 1647. Up to 88 conditions per place. [2021-08-13 06:51:38,751 INFO L132 encePairwiseOnDemand]: 59/67 looper letters, 0 selfloop transitions, 0 changer transitions 246/246 dead transitions. [2021-08-13 06:51:38,751 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 246 transitions, 2312 flow [2021-08-13 06:51:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-13 06:51:38,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-08-13 06:51:38,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 721 transitions. [2021-08-13 06:51:38,754 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.8277841561423651 [2021-08-13 06:51:38,754 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 721 transitions. [2021-08-13 06:51:38,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 721 transitions. [2021-08-13 06:51:38,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 06:51:38,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 721 transitions. [2021-08-13 06:51:38,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 55.46153846153846) internal successors, (721), 13 states have internal predecessors, (721), 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 06:51:38,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 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 06:51:38,761 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 67.0) internal successors, (938), 14 states have internal predecessors, (938), 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 06:51:38,761 INFO L348 CegarLoopForPetriNet]: 61 programPoint places, 62 predicate places. [2021-08-13 06:51:38,761 INFO L482 AbstractCegarLoop]: Abstraction has has 123 places, 246 transitions, 2312 flow [2021-08-13 06:51:38,761 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 54.285714285714285) internal successors, (380), 7 states have internal predecessors, (380), 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 06:51:38,761 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown