/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 12:29:18,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 12:29:18,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 12:29:18,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 12:29:18,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 12:29:18,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 12:29:18,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 12:29:18,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 12:29:18,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 12:29:18,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 12:29:18,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 12:29:18,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 12:29:18,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 12:29:18,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 12:29:18,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 12:29:18,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 12:29:18,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 12:29:18,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 12:29:18,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 12:29:18,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 12:29:18,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 12:29:18,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 12:29:18,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 12:29:18,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 12:29:18,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 12:29:18,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 12:29:18,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 12:29:18,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 12:29:18,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 12:29:18,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 12:29:18,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 12:29:18,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 12:29:18,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 12:29:18,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 12:29:18,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 12:29:18,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 12:29:18,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 12:29:18,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 12:29:18,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 12:29:18,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 12:29:18,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 12:29:18,596 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.epf [2021-06-10 12:29:18,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 12:29:18,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 12:29:18,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 12:29:18,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 12:29:18,624 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 12:29:18,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 12:29:18,624 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 12:29:18,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 12:29:18,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 12:29:18,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 12:29:18,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 12:29:18,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 12:29:18,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 12:29:18,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 12:29:18,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 12:29:18,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 12:29:18,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 12:29:18,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 12:29:18,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 12:29:18,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 12:29:18,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 12:29:18,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 12:29:18,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 12:29:18,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 12:29:18,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 12:29:18,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 12:29:18,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 12:29:18,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 12:29:18,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 12:29:18,627 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 12:29:18,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 12:29:18,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 12:29:18,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 12:29:18,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 12:29:18,897 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 12:29:18,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2021-06-10 12:29:18,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94c2b213/4a00d7bf7efb4ea3b4f4cceeb26c84fe/FLAG2a46f3a47 [2021-06-10 12:29:19,335 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 12:29:19,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2021-06-10 12:29:19,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94c2b213/4a00d7bf7efb4ea3b4f4cceeb26c84fe/FLAG2a46f3a47 [2021-06-10 12:29:19,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94c2b213/4a00d7bf7efb4ea3b4f4cceeb26c84fe [2021-06-10 12:29:19,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 12:29:19,717 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 12:29:19,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 12:29:19,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 12:29:19,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 12:29:19,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:29:19" (1/1) ... [2021-06-10 12:29:19,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103465bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:19, skipping insertion in model container [2021-06-10 12:29:19,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 12:29:19" (1/1) ... [2021-06-10 12:29:19,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 12:29:19,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 12:29:19,910 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i[949,962] [2021-06-10 12:29:19,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:29:20,001 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 12:29:20,009 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i[949,962] [2021-06-10 12:29:20,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 12:29:20,078 INFO L208 MainTranslator]: Completed translation [2021-06-10 12:29:20,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20 WrapperNode [2021-06-10 12:29:20,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 12:29:20,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 12:29:20,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 12:29:20,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 12:29:20,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 12:29:20,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 12:29:20,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 12:29:20,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 12:29:20,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,129 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (1/1) ... [2021-06-10 12:29:20,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 12:29:20,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 12:29:20,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 12:29:20,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 12:29:20,142 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (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 [2021-06-10 12:29:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 12:29:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 12:29:20,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 12:29:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 12:29:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 12:29:20,276 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 12:29:20,276 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 12:29:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 12:29:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 12:29:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 12:29:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-06-10 12:29:20,277 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-06-10 12:29:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 12:29:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 12:29:20,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 12:29:20,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 12:29:20,279 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 12:29:20,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 12:29:20,620 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 12:29:20,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:29:20 BoogieIcfgContainer [2021-06-10 12:29:20,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 12:29:20,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 12:29:20,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 12:29:20,624 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 12:29:20,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 12:29:19" (1/3) ... [2021-06-10 12:29:20,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0eacf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:29:20, skipping insertion in model container [2021-06-10 12:29:20,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 12:29:20" (2/3) ... [2021-06-10 12:29:20,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0eacf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 12:29:20, skipping insertion in model container [2021-06-10 12:29:20,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 12:29:20" (3/3) ... [2021-06-10 12:29:20,626 INFO L111 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2021-06-10 12:29:20,629 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 12:29:20,632 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 12:29:20,633 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 12:29:20,656 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,657 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,658 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,658 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,658 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,659 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,660 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,660 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,660 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,660 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,661 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,662 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,664 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,664 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,664 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,673 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,674 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,674 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,674 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,675 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,677 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 12:29:20,679 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 12:29:20,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-10 12:29:20,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 12:29:20,705 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 12:29:20,705 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 12:29:20,705 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 12:29:20,705 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 12:29:20,705 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 12:29:20,705 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 12:29:20,706 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 12:29:20,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 87 transitions, 194 flow [2021-06-10 12:29:20,741 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-06-10 12:29:20,741 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:29:20,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 83 events. 2/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-06-10 12:29:20,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 87 transitions, 194 flow [2021-06-10 12:29:20,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 69 transitions, 150 flow [2021-06-10 12:29:20,759 INFO L129 PetriNetUnfolder]: 1/68 cut-off events. [2021-06-10 12:29:20,759 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:29:20,760 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:20,760 INFO L263 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] [2021-06-10 12:29:20,760 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:20,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1468949887, now seen corresponding path program 1 times [2021-06-10 12:29:20,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:20,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076488732] [2021-06-10 12:29:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:20,956 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:20,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:20,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:20,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:20,971 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:29:20,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:29:21,003 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:21,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:21,023 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,024 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:21,032 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,034 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:21,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,045 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:21,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076488732] [2021-06-10 12:29:21,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:21,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:21,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337156253] [2021-06-10 12:29:21,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:21,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:21,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:21,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:21,071 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2021-06-10 12:29:21,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2021-06-10 12:29:21,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:21,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2021-06-10 12:29:21,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:21,295 INFO L129 PetriNetUnfolder]: 81/246 cut-off events. [2021-06-10 12:29:21,295 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 12:29:21,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 246 events. 81/246 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 924 event pairs, 37 based on Foata normal form. 11/248 useless extension candidates. Maximal degree in co-relation 386. Up to 76 conditions per place. [2021-06-10 12:29:21,300 INFO L132 encePairwiseOnDemand]: 80/87 looper letters, 14 selfloop transitions, 2 changer transitions 25/95 dead transitions. [2021-06-10 12:29:21,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 95 transitions, 284 flow [2021-06-10 12:29:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 12:29:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 12:29:21,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 666 transitions. [2021-06-10 12:29:21,316 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8505747126436781 [2021-06-10 12:29:21,316 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 666 transitions. [2021-06-10 12:29:21,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 666 transitions. [2021-06-10 12:29:21,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:21,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 666 transitions. [2021-06-10 12:29:21,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.0) internal successors, (666), 9 states have internal predecessors, (666), 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) [2021-06-10 12:29:21,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2021-06-10 12:29:21,332 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 87.0) internal successors, (870), 10 states have internal predecessors, (870), 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) [2021-06-10 12:29:21,333 INFO L185 Difference]: Start difference. First operand has 81 places, 69 transitions, 150 flow. Second operand 9 states and 666 transitions. [2021-06-10 12:29:21,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 95 transitions, 284 flow [2021-06-10 12:29:21,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 95 transitions, 280 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 12:29:21,341 INFO L241 Difference]: Finished difference. Result has 92 places, 68 transitions, 164 flow [2021-06-10 12:29:21,342 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=164, PETRI_PLACES=92, PETRI_TRANSITIONS=68} [2021-06-10 12:29:21,343 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2021-06-10 12:29:21,343 INFO L480 AbstractCegarLoop]: Abstraction has has 92 places, 68 transitions, 164 flow [2021-06-10 12:29:21,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.42857142857143) internal successors, (493), 7 states have internal predecessors, (493), 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) [2021-06-10 12:29:21,343 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:21,344 INFO L263 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] [2021-06-10 12:29:21,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 12:29:21,344 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:21,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash 558507202, now seen corresponding path program 1 times [2021-06-10 12:29:21,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:21,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88877439] [2021-06-10 12:29:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:21,449 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:21,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,451 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:21,454 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:29:21,454 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:29:21,462 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:21,463 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:21,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,477 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:21,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:21,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:21,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88877439] [2021-06-10 12:29:21,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:21,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:21,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16541680] [2021-06-10 12:29:21,495 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:21,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:21,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:21,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:21,497 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 87 [2021-06-10 12:29:21,498 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 68 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:21,498 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:21,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 87 [2021-06-10 12:29:21,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:21,648 INFO L129 PetriNetUnfolder]: 48/180 cut-off events. [2021-06-10 12:29:21,649 INFO L130 PetriNetUnfolder]: For 54/57 co-relation queries the response was YES. [2021-06-10 12:29:21,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 180 events. 48/180 cut-off events. For 54/57 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 521 event pairs, 10 based on Foata normal form. 6/179 useless extension candidates. Maximal degree in co-relation 326. Up to 52 conditions per place. [2021-06-10 12:29:21,650 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 12 selfloop transitions, 4 changer transitions 19/89 dead transitions. [2021-06-10 12:29:21,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 89 transitions, 297 flow [2021-06-10 12:29:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:29:21,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:29:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 727 transitions. [2021-06-10 12:29:21,652 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.835632183908046 [2021-06-10 12:29:21,652 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 727 transitions. [2021-06-10 12:29:21,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 727 transitions. [2021-06-10 12:29:21,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:21,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 727 transitions. [2021-06-10 12:29:21,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.7) internal successors, (727), 10 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:21,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:21,655 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:21,655 INFO L185 Difference]: Start difference. First operand has 92 places, 68 transitions, 164 flow. Second operand 10 states and 727 transitions. [2021-06-10 12:29:21,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 89 transitions, 297 flow [2021-06-10 12:29:21,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 263 flow, removed 14 selfloop flow, removed 8 redundant places. [2021-06-10 12:29:21,660 INFO L241 Difference]: Finished difference. Result has 94 places, 68 transitions, 172 flow [2021-06-10 12:29:21,660 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=172, PETRI_PLACES=94, PETRI_TRANSITIONS=68} [2021-06-10 12:29:21,661 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 13 predicate places. [2021-06-10 12:29:21,661 INFO L480 AbstractCegarLoop]: Abstraction has has 94 places, 68 transitions, 172 flow [2021-06-10 12:29:21,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 70.57142857142857) internal successors, (494), 7 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:21,661 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:21,661 INFO L263 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] [2021-06-10 12:29:21,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 12:29:21,661 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:21,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:21,662 INFO L82 PathProgramCache]: Analyzing trace with hash -840987839, now seen corresponding path program 1 times [2021-06-10 12:29:21,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:21,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021446018] [2021-06-10 12:29:21,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:21,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:21,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:21,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:21,754 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:21,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:21,775 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,776 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:21,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:21,803 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:21,803 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:21,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021446018] [2021-06-10 12:29:21,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:21,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:21,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354272797] [2021-06-10 12:29:21,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:21,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:21,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:21,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:21,808 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2021-06-10 12:29:21,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 68 transitions, 172 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-06-10 12:29:21,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:21,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2021-06-10 12:29:21,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:21,949 INFO L129 PetriNetUnfolder]: 25/142 cut-off events. [2021-06-10 12:29:21,949 INFO L130 PetriNetUnfolder]: For 37/57 co-relation queries the response was YES. [2021-06-10 12:29:21,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 142 events. 25/142 cut-off events. For 37/57 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 375 event pairs, 1 based on Foata normal form. 4/140 useless extension candidates. Maximal degree in co-relation 250. Up to 19 conditions per place. [2021-06-10 12:29:21,951 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 9 selfloop transitions, 4 changer transitions 18/88 dead transitions. [2021-06-10 12:29:21,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 88 transitions, 299 flow [2021-06-10 12:29:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:29:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:29:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 753 transitions. [2021-06-10 12:29:21,953 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8655172413793103 [2021-06-10 12:29:21,953 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 753 transitions. [2021-06-10 12:29:21,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 753 transitions. [2021-06-10 12:29:21,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:21,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 753 transitions. [2021-06-10 12:29:21,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.3) internal successors, (753), 10 states have internal predecessors, (753), 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) [2021-06-10 12:29:21,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:21,957 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:21,957 INFO L185 Difference]: Start difference. First operand has 94 places, 68 transitions, 172 flow. Second operand 10 states and 753 transitions. [2021-06-10 12:29:21,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 88 transitions, 299 flow [2021-06-10 12:29:21,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 88 transitions, 263 flow, removed 14 selfloop flow, removed 9 redundant places. [2021-06-10 12:29:21,961 INFO L241 Difference]: Finished difference. Result has 96 places, 68 transitions, 182 flow [2021-06-10 12:29:21,962 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=182, PETRI_PLACES=96, PETRI_TRANSITIONS=68} [2021-06-10 12:29:21,962 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 15 predicate places. [2021-06-10 12:29:21,962 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 68 transitions, 182 flow [2021-06-10 12:29:21,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-06-10 12:29:21,962 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:21,962 INFO L263 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] [2021-06-10 12:29:21,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 12:29:21,963 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:21,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:21,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1295263072, now seen corresponding path program 1 times [2021-06-10 12:29:21,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:21,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355632915] [2021-06-10 12:29:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:22,024 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,025 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,031 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:22,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:22,045 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:22,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:22,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,061 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:22,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355632915] [2021-06-10 12:29:22,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:22,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:22,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065098951] [2021-06-10 12:29:22,062 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:22,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:22,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:22,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:22,063 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2021-06-10 12:29:22,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 68 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-06-10 12:29:22,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:22,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2021-06-10 12:29:22,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:22,181 INFO L129 PetriNetUnfolder]: 25/144 cut-off events. [2021-06-10 12:29:22,181 INFO L130 PetriNetUnfolder]: For 105/120 co-relation queries the response was YES. [2021-06-10 12:29:22,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 144 events. 25/144 cut-off events. For 105/120 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 406 event pairs, 6 based on Foata normal form. 4/145 useless extension candidates. Maximal degree in co-relation 267. Up to 19 conditions per place. [2021-06-10 12:29:22,182 INFO L132 encePairwiseOnDemand]: 79/87 looper letters, 9 selfloop transitions, 4 changer transitions 18/88 dead transitions. [2021-06-10 12:29:22,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 88 transitions, 317 flow [2021-06-10 12:29:22,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:29:22,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:29:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 753 transitions. [2021-06-10 12:29:22,184 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8655172413793103 [2021-06-10 12:29:22,184 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 753 transitions. [2021-06-10 12:29:22,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 753 transitions. [2021-06-10 12:29:22,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:22,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 753 transitions. [2021-06-10 12:29:22,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 75.3) internal successors, (753), 10 states have internal predecessors, (753), 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) [2021-06-10 12:29:22,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:22,187 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:22,187 INFO L185 Difference]: Start difference. First operand has 96 places, 68 transitions, 182 flow. Second operand 10 states and 753 transitions. [2021-06-10 12:29:22,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 88 transitions, 317 flow [2021-06-10 12:29:22,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 88 transitions, 267 flow, removed 20 selfloop flow, removed 10 redundant places. [2021-06-10 12:29:22,189 INFO L241 Difference]: Finished difference. Result has 97 places, 68 transitions, 186 flow [2021-06-10 12:29:22,189 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=186, PETRI_PLACES=97, PETRI_TRANSITIONS=68} [2021-06-10 12:29:22,189 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 16 predicate places. [2021-06-10 12:29:22,190 INFO L480 AbstractCegarLoop]: Abstraction has has 97 places, 68 transitions, 186 flow [2021-06-10 12:29:22,190 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 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) [2021-06-10 12:29:22,190 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:22,190 INFO L263 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] [2021-06-10 12:29:22,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 12:29:22,190 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:22,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:22,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1449871173, now seen corresponding path program 1 times [2021-06-10 12:29:22,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:22,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201726524] [2021-06-10 12:29:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:22,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,222 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:29:22,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:29:22,233 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,233 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:29:22,239 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:29:22,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:22,245 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:22,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201726524] [2021-06-10 12:29:22,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:22,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 12:29:22,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425838614] [2021-06-10 12:29:22,246 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 12:29:22,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:22,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 12:29:22,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 12:29:22,247 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2021-06-10 12:29:22,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 68 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-10 12:29:22,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:22,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2021-06-10 12:29:22,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:22,384 INFO L129 PetriNetUnfolder]: 330/717 cut-off events. [2021-06-10 12:29:22,385 INFO L130 PetriNetUnfolder]: For 143/146 co-relation queries the response was YES. [2021-06-10 12:29:22,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 717 events. 330/717 cut-off events. For 143/146 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4318 event pairs, 12 based on Foata normal form. 0/696 useless extension candidates. Maximal degree in co-relation 1374. Up to 216 conditions per place. [2021-06-10 12:29:22,389 INFO L132 encePairwiseOnDemand]: 76/87 looper letters, 12 selfloop transitions, 7 changer transitions 30/105 dead transitions. [2021-06-10 12:29:22,389 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 358 flow [2021-06-10 12:29:22,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:29:22,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:29:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 771 transitions. [2021-06-10 12:29:22,391 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8862068965517241 [2021-06-10 12:29:22,391 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 771 transitions. [2021-06-10 12:29:22,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 771 transitions. [2021-06-10 12:29:22,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:22,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 771 transitions. [2021-06-10 12:29:22,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.1) internal successors, (771), 10 states have internal predecessors, (771), 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) [2021-06-10 12:29:22,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:22,395 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:22,396 INFO L185 Difference]: Start difference. First operand has 97 places, 68 transitions, 186 flow. Second operand 10 states and 771 transitions. [2021-06-10 12:29:22,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 358 flow [2021-06-10 12:29:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 105 transitions, 332 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-06-10 12:29:22,400 INFO L241 Difference]: Finished difference. Result has 96 places, 71 transitions, 226 flow [2021-06-10 12:29:22,401 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=226, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2021-06-10 12:29:22,401 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 15 predicate places. [2021-06-10 12:29:22,401 INFO L480 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 226 flow [2021-06-10 12:29:22,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2021-06-10 12:29:22,401 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:22,401 INFO L263 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] [2021-06-10 12:29:22,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 12:29:22,402 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:22,402 INFO L82 PathProgramCache]: Analyzing trace with hash -2099880901, now seen corresponding path program 1 times [2021-06-10 12:29:22,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:22,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076090673] [2021-06-10 12:29:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:22,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,442 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,442 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,447 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:29:22,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:29:22,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:29:22,480 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:29:22,480 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:22,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:22,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076090673] [2021-06-10 12:29:22,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:22,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:22,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003452323] [2021-06-10 12:29:22,491 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:22,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:22,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:22,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:22,493 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2021-06-10 12:29:22,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2021-06-10 12:29:22,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:22,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2021-06-10 12:29:22,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:22,649 INFO L129 PetriNetUnfolder]: 198/490 cut-off events. [2021-06-10 12:29:22,650 INFO L130 PetriNetUnfolder]: For 909/947 co-relation queries the response was YES. [2021-06-10 12:29:22,651 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 490 events. 198/490 cut-off events. For 909/947 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2642 event pairs, 2 based on Foata normal form. 23/510 useless extension candidates. Maximal degree in co-relation 1653. Up to 251 conditions per place. [2021-06-10 12:29:22,654 INFO L132 encePairwiseOnDemand]: 77/87 looper letters, 12 selfloop transitions, 11 changer transitions 23/102 dead transitions. [2021-06-10 12:29:22,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 102 transitions, 543 flow [2021-06-10 12:29:22,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-10 12:29:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-06-10 12:29:22,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 768 transitions. [2021-06-10 12:29:22,657 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8827586206896552 [2021-06-10 12:29:22,657 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 768 transitions. [2021-06-10 12:29:22,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 768 transitions. [2021-06-10 12:29:22,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:22,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 768 transitions. [2021-06-10 12:29:22,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.8) internal successors, (768), 10 states have internal predecessors, (768), 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) [2021-06-10 12:29:22,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:22,661 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 87.0) internal successors, (957), 11 states have internal predecessors, (957), 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) [2021-06-10 12:29:22,662 INFO L185 Difference]: Start difference. First operand has 96 places, 71 transitions, 226 flow. Second operand 10 states and 768 transitions. [2021-06-10 12:29:22,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 102 transitions, 543 flow [2021-06-10 12:29:22,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 518 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-06-10 12:29:22,665 INFO L241 Difference]: Finished difference. Result has 100 places, 75 transitions, 314 flow [2021-06-10 12:29:22,665 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=314, PETRI_PLACES=100, PETRI_TRANSITIONS=75} [2021-06-10 12:29:22,666 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 19 predicate places. [2021-06-10 12:29:22,666 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 75 transitions, 314 flow [2021-06-10 12:29:22,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2021-06-10 12:29:22,666 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:22,666 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:29:22,666 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 12:29:22,666 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:22,667 INFO L82 PathProgramCache]: Analyzing trace with hash -284829232, now seen corresponding path program 1 times [2021-06-10 12:29:22,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:22,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612267435] [2021-06-10 12:29:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:22,715 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,726 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:29:22,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:29:22,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:29:22,746 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:29:22,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:22,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:22,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612267435] [2021-06-10 12:29:22,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:22,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-10 12:29:22,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632195304] [2021-06-10 12:29:22,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 12:29:22,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:22,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 12:29:22,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-10 12:29:22,757 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2021-06-10 12:29:22,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 75 transitions, 314 flow. Second operand has 8 states, 8 states have (on average 73.125) internal successors, (585), 8 states have internal predecessors, (585), 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) [2021-06-10 12:29:22,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:22,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2021-06-10 12:29:22,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:22,945 INFO L129 PetriNetUnfolder]: 96/294 cut-off events. [2021-06-10 12:29:22,945 INFO L130 PetriNetUnfolder]: For 1561/1638 co-relation queries the response was YES. [2021-06-10 12:29:22,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 294 events. 96/294 cut-off events. For 1561/1638 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1258 event pairs, 0 based on Foata normal form. 25/316 useless extension candidates. Maximal degree in co-relation 1278. Up to 133 conditions per place. [2021-06-10 12:29:22,947 INFO L132 encePairwiseOnDemand]: 77/87 looper letters, 12 selfloop transitions, 15 changer transitions 23/106 dead transitions. [2021-06-10 12:29:22,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 106 transitions, 792 flow [2021-06-10 12:29:22,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 12:29:22,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 12:29:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 844 transitions. [2021-06-10 12:29:22,949 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8819226750261233 [2021-06-10 12:29:22,949 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 844 transitions. [2021-06-10 12:29:22,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 844 transitions. [2021-06-10 12:29:22,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:22,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 844 transitions. [2021-06-10 12:29:22,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 76.72727272727273) internal successors, (844), 11 states have internal predecessors, (844), 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) [2021-06-10 12:29:22,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2021-06-10 12:29:22,952 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 87.0) internal successors, (1044), 12 states have internal predecessors, (1044), 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) [2021-06-10 12:29:22,952 INFO L185 Difference]: Start difference. First operand has 100 places, 75 transitions, 314 flow. Second operand 11 states and 844 transitions. [2021-06-10 12:29:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 106 transitions, 792 flow [2021-06-10 12:29:22,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 106 transitions, 612 flow, removed 79 selfloop flow, removed 9 redundant places. [2021-06-10 12:29:22,956 INFO L241 Difference]: Finished difference. Result has 103 places, 79 transitions, 364 flow [2021-06-10 12:29:22,956 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=364, PETRI_PLACES=103, PETRI_TRANSITIONS=79} [2021-06-10 12:29:22,956 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 22 predicate places. [2021-06-10 12:29:22,956 INFO L480 AbstractCegarLoop]: Abstraction has has 103 places, 79 transitions, 364 flow [2021-06-10 12:29:22,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 73.125) internal successors, (585), 8 states have internal predecessors, (585), 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) [2021-06-10 12:29:22,956 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:22,956 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:29:22,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 12:29:22,957 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:22,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:22,957 INFO L82 PathProgramCache]: Analyzing trace with hash 96018669, now seen corresponding path program 1 times [2021-06-10 12:29:22,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:22,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544796176] [2021-06-10 12:29:22,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:22,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:22,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:22,985 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:22,989 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:22,989 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:23,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:23,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:23,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:23,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544796176] [2021-06-10 12:29:23,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:23,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:23,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053712233] [2021-06-10 12:29:23,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:23,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:23,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:23,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:23,020 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2021-06-10 12:29:23,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 79 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:23,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:23,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2021-06-10 12:29:23,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:23,115 INFO L129 PetriNetUnfolder]: 67/350 cut-off events. [2021-06-10 12:29:23,115 INFO L130 PetriNetUnfolder]: For 1121/1218 co-relation queries the response was YES. [2021-06-10 12:29:23,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1134 conditions, 350 events. 67/350 cut-off events. For 1121/1218 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1787 event pairs, 6 based on Foata normal form. 12/346 useless extension candidates. Maximal degree in co-relation 1088. Up to 104 conditions per place. [2021-06-10 12:29:23,118 INFO L132 encePairwiseOnDemand]: 81/87 looper letters, 15 selfloop transitions, 2 changer transitions 4/89 dead transitions. [2021-06-10 12:29:23,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 89 transitions, 432 flow [2021-06-10 12:29:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 12:29:23,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 12:29:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 526 transitions. [2021-06-10 12:29:23,119 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8637110016420362 [2021-06-10 12:29:23,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 526 transitions. [2021-06-10 12:29:23,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 526 transitions. [2021-06-10 12:29:23,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:23,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 526 transitions. [2021-06-10 12:29:23,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2021-06-10 12:29:23,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 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) [2021-06-10 12:29:23,122 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 87.0) internal successors, (696), 8 states have internal predecessors, (696), 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) [2021-06-10 12:29:23,122 INFO L185 Difference]: Start difference. First operand has 103 places, 79 transitions, 364 flow. Second operand 7 states and 526 transitions. [2021-06-10 12:29:23,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 89 transitions, 432 flow [2021-06-10 12:29:23,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 89 transitions, 347 flow, removed 29 selfloop flow, removed 10 redundant places. [2021-06-10 12:29:23,126 INFO L241 Difference]: Finished difference. Result has 100 places, 80 transitions, 298 flow [2021-06-10 12:29:23,126 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=100, PETRI_TRANSITIONS=80} [2021-06-10 12:29:23,126 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 19 predicate places. [2021-06-10 12:29:23,126 INFO L480 AbstractCegarLoop]: Abstraction has has 100 places, 80 transitions, 298 flow [2021-06-10 12:29:23,126 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:23,126 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:23,126 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:29:23,126 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 12:29:23,127 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:23,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1695037885, now seen corresponding path program 2 times [2021-06-10 12:29:23,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:23,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650358488] [2021-06-10 12:29:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:23,151 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:23,152 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,152 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:23,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:23,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:23,160 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:23,165 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-10 12:29:23,165 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 12:29:23,177 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,177 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 12:29:23,184 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-10 12:29:23,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:23,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:23,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650358488] [2021-06-10 12:29:23,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:23,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-06-10 12:29:23,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685894615] [2021-06-10 12:29:23,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-10 12:29:23,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:23,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-10 12:29:23,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-10 12:29:23,194 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 87 [2021-06-10 12:29:23,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 80 transitions, 298 flow. Second operand has 9 states, 9 states have (on average 73.11111111111111) internal successors, (658), 9 states have internal predecessors, (658), 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) [2021-06-10 12:29:23,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:23,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 87 [2021-06-10 12:29:23,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:23,344 INFO L129 PetriNetUnfolder]: 64/271 cut-off events. [2021-06-10 12:29:23,344 INFO L130 PetriNetUnfolder]: For 592/779 co-relation queries the response was YES. [2021-06-10 12:29:23,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 271 events. 64/271 cut-off events. For 592/779 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1188 event pairs, 0 based on Foata normal form. 49/310 useless extension candidates. Maximal degree in co-relation 801. Up to 77 conditions per place. [2021-06-10 12:29:23,345 INFO L132 encePairwiseOnDemand]: 77/87 looper letters, 4 selfloop transitions, 19 changer transitions 16/95 dead transitions. [2021-06-10 12:29:23,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 95 transitions, 501 flow [2021-06-10 12:29:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-10 12:29:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-06-10 12:29:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 904 transitions. [2021-06-10 12:29:23,347 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8659003831417624 [2021-06-10 12:29:23,347 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 904 transitions. [2021-06-10 12:29:23,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 904 transitions. [2021-06-10 12:29:23,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:23,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 904 transitions. [2021-06-10 12:29:23,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 75.33333333333333) internal successors, (904), 12 states have internal predecessors, (904), 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) [2021-06-10 12:29:23,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 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) [2021-06-10 12:29:23,350 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 87.0) internal successors, (1131), 13 states have internal predecessors, (1131), 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) [2021-06-10 12:29:23,350 INFO L185 Difference]: Start difference. First operand has 100 places, 80 transitions, 298 flow. Second operand 12 states and 904 transitions. [2021-06-10 12:29:23,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 95 transitions, 501 flow [2021-06-10 12:29:23,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 95 transitions, 462 flow, removed 17 selfloop flow, removed 6 redundant places. [2021-06-10 12:29:23,353 INFO L241 Difference]: Finished difference. Result has 108 places, 79 transitions, 332 flow [2021-06-10 12:29:23,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=332, PETRI_PLACES=108, PETRI_TRANSITIONS=79} [2021-06-10 12:29:23,353 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 27 predicate places. [2021-06-10 12:29:23,353 INFO L480 AbstractCegarLoop]: Abstraction has has 108 places, 79 transitions, 332 flow [2021-06-10 12:29:23,354 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 73.11111111111111) internal successors, (658), 9 states have internal predecessors, (658), 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) [2021-06-10 12:29:23,354 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 12:29:23,354 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 12:29:23,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 12:29:23,354 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 12:29:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 12:29:23,354 INFO L82 PathProgramCache]: Analyzing trace with hash 814993948, now seen corresponding path program 1 times [2021-06-10 12:29:23,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 12:29:23,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342823076] [2021-06-10 12:29:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 12:29:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 12:29:23,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:23,377 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 12:29:23,380 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 12:29:23,380 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 12:29:23,387 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-10 12:29:23,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-10 12:29:23,399 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,401 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:23,408 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-10 12:29:23,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 12:29:23,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 12:29:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 12:29:23,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342823076] [2021-06-10 12:29:23,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 12:29:23,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-10 12:29:23,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386577394] [2021-06-10 12:29:23,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 12:29:23,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 12:29:23,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 12:29:23,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-10 12:29:23,418 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 87 [2021-06-10 12:29:23,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 79 transitions, 332 flow. Second operand has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:23,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 12:29:23,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 87 [2021-06-10 12:29:23,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 12:29:23,499 INFO L129 PetriNetUnfolder]: 35/196 cut-off events. [2021-06-10 12:29:23,499 INFO L130 PetriNetUnfolder]: For 196/222 co-relation queries the response was YES. [2021-06-10 12:29:23,500 INFO L84 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 196 events. 35/196 cut-off events. For 196/222 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 777 event pairs, 0 based on Foata normal form. 2/188 useless extension candidates. Maximal degree in co-relation 455. Up to 36 conditions per place. [2021-06-10 12:29:23,500 INFO L132 encePairwiseOnDemand]: 76/87 looper letters, 0 selfloop transitions, 0 changer transitions 80/80 dead transitions. [2021-06-10 12:29:23,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 80 transitions, 372 flow [2021-06-10 12:29:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 12:29:23,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 12:29:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 555 transitions. [2021-06-10 12:29:23,501 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7974137931034483 [2021-06-10 12:29:23,501 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 555 transitions. [2021-06-10 12:29:23,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 555 transitions. [2021-06-10 12:29:23,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 12:29:23,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 555 transitions. [2021-06-10 12:29:23,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 69.375) internal successors, (555), 8 states have internal predecessors, (555), 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) [2021-06-10 12:29:23,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 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) [2021-06-10 12:29:23,503 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 87.0) internal successors, (783), 9 states have internal predecessors, (783), 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) [2021-06-10 12:29:23,504 INFO L185 Difference]: Start difference. First operand has 108 places, 79 transitions, 332 flow. Second operand 8 states and 555 transitions. [2021-06-10 12:29:23,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 80 transitions, 372 flow [2021-06-10 12:29:23,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 80 transitions, 252 flow, removed 28 selfloop flow, removed 18 redundant places. [2021-06-10 12:29:23,505 INFO L241 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2021-06-10 12:29:23,505 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2021-06-10 12:29:23,505 INFO L343 CegarLoopForPetriNet]: 81 programPoint places, 9 predicate places. [2021-06-10 12:29:23,505 INFO L480 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2021-06-10 12:29:23,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 69.28571428571429) internal successors, (485), 7 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 12:29:23,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 12:29:23,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 12:29:23 BasicIcfg [2021-06-10 12:29:23,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 12:29:23,510 INFO L168 Benchmark]: Toolchain (without parser) took 3792.93 ms. Allocated memory was 417.3 MB in the beginning and 515.9 MB in the end (delta: 98.6 MB). Free memory was 379.6 MB in the beginning and 282.1 MB in the end (delta: 97.4 MB). Peak memory consumption was 196.8 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:23,510 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 417.3 MB. Free memory is still 397.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:29:23,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.61 ms. Allocated memory is still 417.3 MB. Free memory was 379.4 MB in the beginning and 378.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:23,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.48 ms. Allocated memory is still 417.3 MB. Free memory was 378.1 MB in the beginning and 376.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:23,510 INFO L168 Benchmark]: Boogie Preprocessor took 18.31 ms. Allocated memory is still 417.3 MB. Free memory was 376.0 MB in the beginning and 375.0 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 12:29:23,511 INFO L168 Benchmark]: RCFGBuilder took 479.83 ms. Allocated memory is still 417.3 MB. Free memory was 375.0 MB in the beginning and 348.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:23,511 INFO L168 Benchmark]: TraceAbstraction took 2887.24 ms. Allocated memory was 417.3 MB in the beginning and 515.9 MB in the end (delta: 98.6 MB). Free memory was 347.7 MB in the beginning and 282.1 MB in the end (delta: 65.6 MB). Peak memory consumption was 166.3 MB. Max. memory is 16.0 GB. [2021-06-10 12:29:23,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 417.3 MB. Free memory is still 397.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 360.61 ms. Allocated memory is still 417.3 MB. Free memory was 379.4 MB in the beginning and 378.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.48 ms. Allocated memory is still 417.3 MB. Free memory was 378.1 MB in the beginning and 376.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.31 ms. Allocated memory is still 417.3 MB. Free memory was 376.0 MB in the beginning and 375.0 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 479.83 ms. Allocated memory is still 417.3 MB. Free memory was 375.0 MB in the beginning and 348.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2887.24 ms. Allocated memory was 417.3 MB in the beginning and 515.9 MB in the end (delta: 98.6 MB). Free memory was 347.7 MB in the beginning and 282.1 MB in the end (delta: 65.6 MB). Peak memory consumption was 166.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 12.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2804.1ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1609.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 41.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 111 SDtfs, 257 SDslu, 374 SDs, 0 SdLazy, 545 SolverSat, 109 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 303.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 964.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=364occurred in iteration=7, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.7ms SsaConstructionTime, 162.3ms SatisfiabilityAnalysisTime, 799.0ms InterpolantComputationTime, 527 NumberOfCodeBlocks, 527 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 517 ConstructedInterpolants, 0 QuantifiedInterpolants, 2203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...