/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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:45:28,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:45:28,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:45:28,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:45:28,774 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:45:28,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:45:28,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:45:28,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:45:28,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:45:28,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:45:28,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:45:28,790 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:45:28,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:45:28,794 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:45:28,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:45:28,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:45:28,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:45:28,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:45:28,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:45:28,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:45:28,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:45:28,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:45:28,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:45:28,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:45:28,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:45:28,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:45:28,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:45:28,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:45:28,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:45:28,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:45:28,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:45:28,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:45:28,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:45:28,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:45:28,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:45:28,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:45:28,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:45:28,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:45:28,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:45:28,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:45:28,818 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:45:28,820 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-VariableLbe.epf [2023-01-28 02:45:28,845 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:45:28,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:45:28,847 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:45:28,847 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:45:28,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:45:28,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:45:28,848 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:45:28,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:45:28,848 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:45:28,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:45:28,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:45:28,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:45:28,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:28,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:45:28,850 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:45:29,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:45:29,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:45:29,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:45:29,071 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:45:29,075 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:45:29,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-01-28 02:45:30,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:45:30,288 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:45:30,288 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-01-28 02:45:30,293 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38bae501a/8ae24fdd2f3c460c98af5115604e4210/FLAG41f326d51 [2023-01-28 02:45:30,303 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38bae501a/8ae24fdd2f3c460c98af5115604e4210 [2023-01-28 02:45:30,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:45:30,305 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:45:30,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:30,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:45:30,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:45:30,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14ad205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30, skipping insertion in model container [2023-01-28 02:45:30,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:45:30,334 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:45:30,450 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-01-28 02:45:30,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:30,464 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:45:30,482 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-01-28 02:45:30,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:45:30,494 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:45:30,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30 WrapperNode [2023-01-28 02:45:30,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:45:30,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:30,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:45:30,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:45:30,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,507 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,534 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 316 [2023-01-28 02:45:30,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:45:30,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:45:30,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:45:30,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:45:30,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:45:30,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:45:30,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:45:30,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:45:30,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (1/1) ... [2023-01-28 02:45:30,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:45:30,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:45:30,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 02:45:30,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 02:45:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:45:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:45:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:45:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:45:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 02:45:30,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 02:45:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 02:45:30,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 02:45:30,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 02:45:30,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 02:45:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:45:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:45:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:45:30,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:45:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:45:30,650 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:45:30,770 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:45:30,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:45:31,046 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:45:31,054 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:45:31,055 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 02:45:31,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:31 BoogieIcfgContainer [2023-01-28 02:45:31,057 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:45:31,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:45:31,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:45:31,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:45:31,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:45:30" (1/3) ... [2023-01-28 02:45:31,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7246a9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:31, skipping insertion in model container [2023-01-28 02:45:31,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:45:30" (2/3) ... [2023-01-28 02:45:31,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7246a9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:45:31, skipping insertion in model container [2023-01-28 02:45:31,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:45:31" (3/3) ... [2023-01-28 02:45:31,062 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-01-28 02:45:31,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:45:31,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 02:45:31,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:45:31,175 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 02:45:31,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 360 transitions, 744 flow [2023-01-28 02:45:31,301 INFO L130 PetriNetUnfolder]: 26/357 cut-off events. [2023-01-28 02:45:31,301 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:31,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 357 events. 26/357 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 808 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-01-28 02:45:31,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 360 transitions, 744 flow [2023-01-28 02:45:31,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 347 transitions, 712 flow [2023-01-28 02:45:31,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:45:31,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 331 places, 347 transitions, 712 flow [2023-01-28 02:45:31,330 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 331 places, 347 transitions, 712 flow [2023-01-28 02:45:31,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 347 transitions, 712 flow [2023-01-28 02:45:31,394 INFO L130 PetriNetUnfolder]: 26/347 cut-off events. [2023-01-28 02:45:31,394 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:31,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 347 events. 26/347 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 807 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 268. Up to 2 conditions per place. [2023-01-28 02:45:31,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 28350 [2023-01-28 02:45:39,694 INFO L134 LiptonReduction]: Checked pairs total: 26332 [2023-01-28 02:45:39,694 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-01-28 02:45:39,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 02:45:39,756 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b4d4207, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:45:39,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 02:45:39,762 INFO L130 PetriNetUnfolder]: 4/23 cut-off events. [2023-01-28 02:45:39,762 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:39,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:39,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:39,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:39,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash 938001691, now seen corresponding path program 1 times [2023-01-28 02:45:39,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:39,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694849987] [2023-01-28 02:45:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:39,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:45:40,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:40,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694849987] [2023-01-28 02:45:40,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694849987] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:40,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:40,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:45:40,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184751481] [2023-01-28 02:45:40,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:40,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:45:40,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:45:40,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:45:40,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 771 [2023-01-28 02:45:40,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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) [2023-01-28 02:45:40,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:40,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 771 [2023-01-28 02:45:40,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:40,399 INFO L130 PetriNetUnfolder]: 221/328 cut-off events. [2023-01-28 02:45:40,399 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-01-28 02:45:40,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2023-01-28 02:45:40,402 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-01-28 02:45:40,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-01-28 02:45:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:45:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:45:40,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 995 transitions. [2023-01-28 02:45:40,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301772589710333 [2023-01-28 02:45:40,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 995 transitions. [2023-01-28 02:45:40,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 995 transitions. [2023-01-28 02:45:40,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:40,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 995 transitions. [2023-01-28 02:45:40,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 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) [2023-01-28 02:45:40,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 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) [2023-01-28 02:45:40,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 771.0) internal successors, (3084), 4 states have internal predecessors, (3084), 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) [2023-01-28 02:45:40,469 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 995 transitions. [2023-01-28 02:45:40,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-01-28 02:45:40,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 02:45:40,474 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-01-28 02:45:40,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-01-28 02:45:40,478 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-01-28 02:45:40,478 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-01-28 02:45:40,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 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) [2023-01-28 02:45:40,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:40,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:40,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:45:40,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:40,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1524160958, now seen corresponding path program 1 times [2023-01-28 02:45:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:40,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428790594] [2023-01-28 02:45:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:40,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:45:40,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:40,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428790594] [2023-01-28 02:45:40,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428790594] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:45:40,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447419352] [2023-01-28 02:45:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:40,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:45:40,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:45:40,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:45:40,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:45:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:40,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-28 02:45:40,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:45:40,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:45:40,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:45:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 02:45:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447419352] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:45:40,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:45:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 02:45:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490186127] [2023-01-28 02:45:40,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:45:40,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:40,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:40,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:40,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 771 [2023-01-28 02:45:40,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 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) [2023-01-28 02:45:40,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:40,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 771 [2023-01-28 02:45:40,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:40,962 INFO L130 PetriNetUnfolder]: 221/330 cut-off events. [2023-01-28 02:45:40,962 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 02:45:40,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 771 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2023-01-28 02:45:40,963 INFO L137 encePairwiseOnDemand]: 768/771 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-01-28 02:45:40,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-01-28 02:45:40,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 02:45:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 02:45:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1644 transitions. [2023-01-28 02:45:40,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264591439688716 [2023-01-28 02:45:40,967 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1644 transitions. [2023-01-28 02:45:40,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1644 transitions. [2023-01-28 02:45:40,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:40,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1644 transitions. [2023-01-28 02:45:40,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 328.8) internal successors, (1644), 5 states have internal predecessors, (1644), 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) [2023-01-28 02:45:40,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 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) [2023-01-28 02:45:40,982 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 771.0) internal successors, (4626), 6 states have internal predecessors, (4626), 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) [2023-01-28 02:45:40,982 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 1644 transitions. [2023-01-28 02:45:40,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-01-28 02:45:40,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:40,983 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-01-28 02:45:40,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 02:45:40,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-01-28 02:45:40,984 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-01-28 02:45:40,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 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) [2023-01-28 02:45:40,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:40,986 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:41,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 02:45:41,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:45:41,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:41,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -793936030, now seen corresponding path program 2 times [2023-01-28 02:45:41,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:41,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931054612] [2023-01-28 02:45:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:41,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:41,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:41,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931054612] [2023-01-28 02:45:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931054612] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:41,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:45:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126807960] [2023-01-28 02:45:41,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:41,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:45:41,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:45:41,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:45:41,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 02:45:41,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:41,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:41,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 02:45:41,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:42,046 INFO L130 PetriNetUnfolder]: 391/589 cut-off events. [2023-01-28 02:45:42,046 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-01-28 02:45:42,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 589 events. 391/589 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1862 event pairs, 138 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1190. Up to 331 conditions per place. [2023-01-28 02:45:42,049 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 59 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-01-28 02:45:42,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 341 flow [2023-01-28 02:45:42,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:42,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1704 transitions. [2023-01-28 02:45:42,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36835278858625164 [2023-01-28 02:45:42,053 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1704 transitions. [2023-01-28 02:45:42,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1704 transitions. [2023-01-28 02:45:42,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:42,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1704 transitions. [2023-01-28 02:45:42,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.0) internal successors, (1704), 6 states have internal predecessors, (1704), 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) [2023-01-28 02:45:42,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:42,063 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:42,064 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 6 states and 1704 transitions. [2023-01-28 02:45:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 341 flow [2023-01-28 02:45:42,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:42,067 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 116 flow [2023-01-28 02:45:42,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-01-28 02:45:42,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-01-28 02:45:42,068 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 116 flow [2023-01-28 02:45:42,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:42,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:42,069 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:42,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 02:45:42,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:42,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1410407670, now seen corresponding path program 3 times [2023-01-28 02:45:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110541283] [2023-01-28 02:45:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:42,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:42,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:42,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110541283] [2023-01-28 02:45:42,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110541283] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:42,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:42,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:45:42,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865285759] [2023-01-28 02:45:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:42,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:45:42,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:45:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:45:42,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 02:45:42,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:42,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:42,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 02:45:42,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:42,956 INFO L130 PetriNetUnfolder]: 598/896 cut-off events. [2023-01-28 02:45:42,956 INFO L131 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2023-01-28 02:45:42,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 896 events. 598/896 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3127 event pairs, 238 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 2416. Up to 553 conditions per place. [2023-01-28 02:45:42,960 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 61 selfloop transitions, 7 changer transitions 10/78 dead transitions. [2023-01-28 02:45:42,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 78 transitions, 416 flow [2023-01-28 02:45:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1700 transitions. [2023-01-28 02:45:42,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674881106787722 [2023-01-28 02:45:42,963 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1700 transitions. [2023-01-28 02:45:42,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1700 transitions. [2023-01-28 02:45:42,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:42,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1700 transitions. [2023-01-28 02:45:42,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.3333333333333) internal successors, (1700), 6 states have internal predecessors, (1700), 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) [2023-01-28 02:45:42,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:42,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:42,973 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 116 flow. Second operand 6 states and 1700 transitions. [2023-01-28 02:45:42,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 78 transitions, 416 flow [2023-01-28 02:45:42,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 395 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:42,976 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 158 flow [2023-01-28 02:45:42,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-01-28 02:45:42,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-01-28 02:45:42,976 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 158 flow [2023-01-28 02:45:42,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:42,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:42,977 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:42,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 02:45:42,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:42,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1289977774, now seen corresponding path program 4 times [2023-01-28 02:45:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:42,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073445617] [2023-01-28 02:45:42,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:42,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:43,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073445617] [2023-01-28 02:45:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073445617] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:43,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:43,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:43,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230193035] [2023-01-28 02:45:43,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:43,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:45:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:45:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:45:43,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 771 [2023-01-28 02:45:43,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 267.625) internal successors, (2141), 8 states have internal predecessors, (2141), 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) [2023-01-28 02:45:43,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:43,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 771 [2023-01-28 02:45:43,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:43,949 INFO L130 PetriNetUnfolder]: 1264/1955 cut-off events. [2023-01-28 02:45:43,949 INFO L131 PetriNetUnfolder]: For 2770/2770 co-relation queries the response was YES. [2023-01-28 02:45:43,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6252 conditions, 1955 events. 1264/1955 cut-off events. For 2770/2770 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8935 event pairs, 428 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 6222. Up to 875 conditions per place. [2023-01-28 02:45:43,958 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 108 selfloop transitions, 14 changer transitions 3/125 dead transitions. [2023-01-28 02:45:43,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 125 transitions, 822 flow [2023-01-28 02:45:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1943 transitions. [2023-01-28 02:45:43,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3600148230498425 [2023-01-28 02:45:43,962 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1943 transitions. [2023-01-28 02:45:43,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1943 transitions. [2023-01-28 02:45:43,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:43,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1943 transitions. [2023-01-28 02:45:43,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.57142857142856) internal successors, (1943), 7 states have internal predecessors, (1943), 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) [2023-01-28 02:45:43,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:43,970 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:43,971 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 158 flow. Second operand 7 states and 1943 transitions. [2023-01-28 02:45:43,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 125 transitions, 822 flow [2023-01-28 02:45:43,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 125 transitions, 771 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:43,977 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 298 flow [2023-01-28 02:45:43,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=298, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-01-28 02:45:43,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2023-01-28 02:45:43,979 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 298 flow [2023-01-28 02:45:43,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 267.625) internal successors, (2141), 8 states have internal predecessors, (2141), 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) [2023-01-28 02:45:43,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:43,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:43,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 02:45:43,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:43,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:43,981 INFO L85 PathProgramCache]: Analyzing trace with hash 769737702, now seen corresponding path program 5 times [2023-01-28 02:45:43,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:43,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124746327] [2023-01-28 02:45:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:43,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:44,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124746327] [2023-01-28 02:45:44,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124746327] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:44,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:44,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:44,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658297680] [2023-01-28 02:45:44,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:44,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:45:44,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:45:44,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:45:44,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 771 [2023-01-28 02:45:44,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 298 flow. Second operand has 8 states, 8 states have (on average 263.625) internal successors, (2109), 8 states have internal predecessors, (2109), 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) [2023-01-28 02:45:44,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:44,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 771 [2023-01-28 02:45:44,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:45,613 INFO L130 PetriNetUnfolder]: 1619/2534 cut-off events. [2023-01-28 02:45:45,613 INFO L131 PetriNetUnfolder]: For 5277/5277 co-relation queries the response was YES. [2023-01-28 02:45:45,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 2534 events. 1619/2534 cut-off events. For 5277/5277 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12597 event pairs, 224 based on Foata normal form. 2/2188 useless extension candidates. Maximal degree in co-relation 9350. Up to 1584 conditions per place. [2023-01-28 02:45:45,627 INFO L137 encePairwiseOnDemand]: 761/771 looper letters, 78 selfloop transitions, 33 changer transitions 3/114 dead transitions. [2023-01-28 02:45:45,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 836 flow [2023-01-28 02:45:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:45,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1902 transitions. [2023-01-28 02:45:45,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35241801000555867 [2023-01-28 02:45:45,631 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1902 transitions. [2023-01-28 02:45:45,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1902 transitions. [2023-01-28 02:45:45,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:45,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1902 transitions. [2023-01-28 02:45:45,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 271.7142857142857) internal successors, (1902), 7 states have internal predecessors, (1902), 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) [2023-01-28 02:45:45,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:45,640 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:45,640 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 298 flow. Second operand 7 states and 1902 transitions. [2023-01-28 02:45:45,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 836 flow [2023-01-28 02:45:45,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 813 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:45,646 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 596 flow [2023-01-28 02:45:45,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=596, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-01-28 02:45:45,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-01-28 02:45:45,647 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 596 flow [2023-01-28 02:45:45,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.625) internal successors, (2109), 8 states have internal predecessors, (2109), 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) [2023-01-28 02:45:45,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:45,648 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:45,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 02:45:45,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:45,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:45,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1478770490, now seen corresponding path program 6 times [2023-01-28 02:45:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:45,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041676228] [2023-01-28 02:45:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:45,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:46,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041676228] [2023-01-28 02:45:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041676228] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:46,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:45:46,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596872354] [2023-01-28 02:45:46,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:46,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:45:46,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:46,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:45:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:45:46,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 02:45:46,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:46,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:46,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 02:45:46,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:46,482 INFO L130 PetriNetUnfolder]: 1623/2565 cut-off events. [2023-01-28 02:45:46,483 INFO L131 PetriNetUnfolder]: For 9351/9351 co-relation queries the response was YES. [2023-01-28 02:45:46,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11143 conditions, 2565 events. 1623/2565 cut-off events. For 9351/9351 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12669 event pairs, 490 based on Foata normal form. 3/2218 useless extension candidates. Maximal degree in co-relation 11104. Up to 1223 conditions per place. [2023-01-28 02:45:46,495 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 92 selfloop transitions, 19 changer transitions 12/123 dead transitions. [2023-01-28 02:45:46,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 123 transitions, 1110 flow [2023-01-28 02:45:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:46,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1703 transitions. [2023-01-28 02:45:46,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681366191093818 [2023-01-28 02:45:46,499 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1703 transitions. [2023-01-28 02:45:46,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1703 transitions. [2023-01-28 02:45:46,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:46,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1703 transitions. [2023-01-28 02:45:46,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 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) [2023-01-28 02:45:46,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:46,507 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:46,507 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 596 flow. Second operand 6 states and 1703 transitions. [2023-01-28 02:45:46,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 123 transitions, 1110 flow [2023-01-28 02:45:46,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 123 transitions, 1046 flow, removed 29 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:46,522 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 676 flow [2023-01-28 02:45:46,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=676, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2023-01-28 02:45:46,523 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-01-28 02:45:46,523 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 676 flow [2023-01-28 02:45:46,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:46,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:46,524 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:46,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:45:46,524 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:46,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:46,524 INFO L85 PathProgramCache]: Analyzing trace with hash 337044488, now seen corresponding path program 7 times [2023-01-28 02:45:46,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:46,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923255628] [2023-01-28 02:45:46,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:46,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:46,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:46,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923255628] [2023-01-28 02:45:46,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923255628] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:46,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:46,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:45:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360881363] [2023-01-28 02:45:46,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:46,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:45:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:46,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:45:46,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:45:46,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:45:46,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 676 flow. Second operand has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 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) [2023-01-28 02:45:46,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:46,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:45:46,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:47,468 INFO L130 PetriNetUnfolder]: 1595/2508 cut-off events. [2023-01-28 02:45:47,468 INFO L131 PetriNetUnfolder]: For 10169/10169 co-relation queries the response was YES. [2023-01-28 02:45:47,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11459 conditions, 2508 events. 1595/2508 cut-off events. For 10169/10169 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12343 event pairs, 530 based on Foata normal form. 2/2162 useless extension candidates. Maximal degree in co-relation 11416. Up to 1479 conditions per place. [2023-01-28 02:45:47,487 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 97 selfloop transitions, 29 changer transitions 15/141 dead transitions. [2023-01-28 02:45:47,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 141 transitions, 1348 flow [2023-01-28 02:45:47,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:47,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:47,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1683 transitions. [2023-01-28 02:45:47,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638132295719844 [2023-01-28 02:45:47,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1683 transitions. [2023-01-28 02:45:47,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1683 transitions. [2023-01-28 02:45:47,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:47,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1683 transitions. [2023-01-28 02:45:47,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 280.5) internal successors, (1683), 6 states have internal predecessors, (1683), 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) [2023-01-28 02:45:47,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:47,500 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:47,500 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 676 flow. Second operand 6 states and 1683 transitions. [2023-01-28 02:45:47,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 141 transitions, 1348 flow [2023-01-28 02:45:47,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 141 transitions, 1310 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:47,539 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 828 flow [2023-01-28 02:45:47,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=828, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2023-01-28 02:45:47,541 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2023-01-28 02:45:47,541 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 828 flow [2023-01-28 02:45:47,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 271.5) internal successors, (1629), 6 states have internal predecessors, (1629), 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) [2023-01-28 02:45:47,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:47,542 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:47,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 02:45:47,542 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:47,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash -97285908, now seen corresponding path program 8 times [2023-01-28 02:45:47,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:47,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688953138] [2023-01-28 02:45:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:47,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:47,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688953138] [2023-01-28 02:45:47,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688953138] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:47,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:47,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:45:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503744190] [2023-01-28 02:45:47,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:45:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:45:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:45:47,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 02:45:47,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 828 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:47,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:47,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 02:45:47,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:48,429 INFO L130 PetriNetUnfolder]: 1565/2439 cut-off events. [2023-01-28 02:45:48,429 INFO L131 PetriNetUnfolder]: For 10775/10775 co-relation queries the response was YES. [2023-01-28 02:45:48,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2439 events. 1565/2439 cut-off events. For 10775/10775 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11714 event pairs, 530 based on Foata normal form. 3/2096 useless extension candidates. Maximal degree in co-relation 11305. Up to 1479 conditions per place. [2023-01-28 02:45:48,448 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 91 selfloop transitions, 26 changer transitions 15/132 dead transitions. [2023-01-28 02:45:48,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 132 transitions, 1328 flow [2023-01-28 02:45:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1703 transitions. [2023-01-28 02:45:48,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3681366191093818 [2023-01-28 02:45:48,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1703 transitions. [2023-01-28 02:45:48,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1703 transitions. [2023-01-28 02:45:48,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:48,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1703 transitions. [2023-01-28 02:45:48,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.8333333333333) internal successors, (1703), 6 states have internal predecessors, (1703), 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) [2023-01-28 02:45:48,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:48,459 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:48,459 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 828 flow. Second operand 6 states and 1703 transitions. [2023-01-28 02:45:48,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 132 transitions, 1328 flow [2023-01-28 02:45:48,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 132 transitions, 1320 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:48,478 INFO L231 Difference]: Finished difference. Result has 82 places, 80 transitions, 869 flow [2023-01-28 02:45:48,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=869, PETRI_PLACES=82, PETRI_TRANSITIONS=80} [2023-01-28 02:45:48,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-01-28 02:45:48,479 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 80 transitions, 869 flow [2023-01-28 02:45:48,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:48,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:48,480 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:48,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 02:45:48,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:48,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:48,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1951623602, now seen corresponding path program 9 times [2023-01-28 02:45:48,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:48,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505257072] [2023-01-28 02:45:48,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:48,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:48,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:48,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:48,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505257072] [2023-01-28 02:45:48,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505257072] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:48,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:48,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 02:45:48,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540829725] [2023-01-28 02:45:48,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:48,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:45:48,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:48,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:45:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:45:48,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 771 [2023-01-28 02:45:48,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 869 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:48,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:48,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 771 [2023-01-28 02:45:48,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:49,214 INFO L130 PetriNetUnfolder]: 1537/2381 cut-off events. [2023-01-28 02:45:49,214 INFO L131 PetriNetUnfolder]: For 12541/12541 co-relation queries the response was YES. [2023-01-28 02:45:49,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 2381 events. 1537/2381 cut-off events. For 12541/12541 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11179 event pairs, 484 based on Foata normal form. 3/2040 useless extension candidates. Maximal degree in co-relation 11510. Up to 1223 conditions per place. [2023-01-28 02:45:49,228 INFO L137 encePairwiseOnDemand]: 764/771 looper letters, 88 selfloop transitions, 26 changer transitions 12/126 dead transitions. [2023-01-28 02:45:49,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 126 transitions, 1333 flow [2023-01-28 02:45:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:45:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:45:49,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1701 transitions. [2023-01-28 02:45:49,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36770428015564205 [2023-01-28 02:45:49,232 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1701 transitions. [2023-01-28 02:45:49,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1701 transitions. [2023-01-28 02:45:49,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:49,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1701 transitions. [2023-01-28 02:45:49,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 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) [2023-01-28 02:45:49,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:49,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 771.0) internal successors, (5397), 7 states have internal predecessors, (5397), 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) [2023-01-28 02:45:49,239 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 869 flow. Second operand 6 states and 1701 transitions. [2023-01-28 02:45:49,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 126 transitions, 1333 flow [2023-01-28 02:45:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 126 transitions, 1290 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 02:45:49,262 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 920 flow [2023-01-28 02:45:49,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=920, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-01-28 02:45:49,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-28 02:45:49,263 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 920 flow [2023-01-28 02:45:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 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) [2023-01-28 02:45:49,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:49,263 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:49,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 02:45:49,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:49,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:49,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1598507779, now seen corresponding path program 1 times [2023-01-28 02:45:49,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:49,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493199918] [2023-01-28 02:45:49,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:49,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493199918] [2023-01-28 02:45:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493199918] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:49,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:45:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443474609] [2023-01-28 02:45:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:45:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:45:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:45:49,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:45:49,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 920 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:45:49,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:49,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:45:49,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:50,193 INFO L130 PetriNetUnfolder]: 2107/3260 cut-off events. [2023-01-28 02:45:50,194 INFO L131 PetriNetUnfolder]: For 20971/20971 co-relation queries the response was YES. [2023-01-28 02:45:50,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16124 conditions, 3260 events. 2107/3260 cut-off events. For 20971/20971 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16865 event pairs, 424 based on Foata normal form. 10/2800 useless extension candidates. Maximal degree in co-relation 16075. Up to 1161 conditions per place. [2023-01-28 02:45:50,213 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 217 selfloop transitions, 23 changer transitions 0/240 dead transitions. [2023-01-28 02:45:50,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 240 transitions, 2960 flow [2023-01-28 02:45:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2014 transitions. [2023-01-28 02:45:50,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3731702797850658 [2023-01-28 02:45:50,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2014 transitions. [2023-01-28 02:45:50,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2014 transitions. [2023-01-28 02:45:50,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:50,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2014 transitions. [2023-01-28 02:45:50,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.7142857142857) internal successors, (2014), 7 states have internal predecessors, (2014), 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) [2023-01-28 02:45:50,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:50,225 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:50,225 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 920 flow. Second operand 7 states and 2014 transitions. [2023-01-28 02:45:50,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 240 transitions, 2960 flow [2023-01-28 02:45:50,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 240 transitions, 2863 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:50,256 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 1212 flow [2023-01-28 02:45:50,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1212, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2023-01-28 02:45:50,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-01-28 02:45:50,257 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 1212 flow [2023-01-28 02:45:50,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:45:50,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:50,257 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:50,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 02:45:50,258 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:50,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1705182456, now seen corresponding path program 1 times [2023-01-28 02:45:50,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:50,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811567155] [2023-01-28 02:45:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:50,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:50,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:50,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:50,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811567155] [2023-01-28 02:45:50,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811567155] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:50,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:50,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:45:50,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817199267] [2023-01-28 02:45:50,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:50,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:45:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:50,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:45:50,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:45:50,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:45:50,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 98 transitions, 1212 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:45:50,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:50,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:45:50,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:51,237 INFO L130 PetriNetUnfolder]: 2345/3622 cut-off events. [2023-01-28 02:45:51,237 INFO L131 PetriNetUnfolder]: For 22615/22615 co-relation queries the response was YES. [2023-01-28 02:45:51,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18647 conditions, 3622 events. 2345/3622 cut-off events. For 22615/22615 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18662 event pairs, 320 based on Foata normal form. 4/3332 useless extension candidates. Maximal degree in co-relation 18594. Up to 1578 conditions per place. [2023-01-28 02:45:51,260 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 143 selfloop transitions, 28 changer transitions 0/171 dead transitions. [2023-01-28 02:45:51,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 171 transitions, 2057 flow [2023-01-28 02:45:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 02:45:51,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 02:45:51,264 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 02:45:51,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 02:45:51,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:51,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 02:45:51,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 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) [2023-01-28 02:45:51,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:51,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:51,274 INFO L175 Difference]: Start difference. First operand has 94 places, 98 transitions, 1212 flow. Second operand 7 states and 1995 transitions. [2023-01-28 02:45:51,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 171 transitions, 2057 flow [2023-01-28 02:45:51,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 171 transitions, 2007 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-01-28 02:45:51,326 INFO L231 Difference]: Finished difference. Result has 103 places, 106 transitions, 1404 flow [2023-01-28 02:45:51,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1404, PETRI_PLACES=103, PETRI_TRANSITIONS=106} [2023-01-28 02:45:51,327 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2023-01-28 02:45:51,327 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 106 transitions, 1404 flow [2023-01-28 02:45:51,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:45:51,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:51,328 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:51,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 02:45:51,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:51,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:51,328 INFO L85 PathProgramCache]: Analyzing trace with hash 740274830, now seen corresponding path program 2 times [2023-01-28 02:45:51,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:51,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734182594] [2023-01-28 02:45:51,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:51,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:51,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:51,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734182594] [2023-01-28 02:45:51,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734182594] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:51,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:51,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:51,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866042795] [2023-01-28 02:45:51,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:51,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:51,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:51,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:51,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:51,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:45:51,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 106 transitions, 1404 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:45:51,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:51,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:45:51,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:52,504 INFO L130 PetriNetUnfolder]: 2379/3710 cut-off events. [2023-01-28 02:45:52,505 INFO L131 PetriNetUnfolder]: For 32210/32210 co-relation queries the response was YES. [2023-01-28 02:45:52,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19766 conditions, 3710 events. 2379/3710 cut-off events. For 32210/32210 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19661 event pairs, 354 based on Foata normal form. 6/3410 useless extension candidates. Maximal degree in co-relation 19709. Up to 1201 conditions per place. [2023-01-28 02:45:52,534 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 166 selfloop transitions, 88 changer transitions 3/257 dead transitions. [2023-01-28 02:45:52,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 257 transitions, 3337 flow [2023-01-28 02:45:52,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-28 02:45:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-28 02:45:52,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3064 transitions. [2023-01-28 02:45:52,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36127815116141965 [2023-01-28 02:45:52,541 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3064 transitions. [2023-01-28 02:45:52,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3064 transitions. [2023-01-28 02:45:52,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:52,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3064 transitions. [2023-01-28 02:45:52,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 278.54545454545456) internal successors, (3064), 11 states have internal predecessors, (3064), 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) [2023-01-28 02:45:52,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 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) [2023-01-28 02:45:52,552 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 771.0) internal successors, (9252), 12 states have internal predecessors, (9252), 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) [2023-01-28 02:45:52,552 INFO L175 Difference]: Start difference. First operand has 103 places, 106 transitions, 1404 flow. Second operand 11 states and 3064 transitions. [2023-01-28 02:45:52,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 257 transitions, 3337 flow [2023-01-28 02:45:52,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 257 transitions, 3171 flow, removed 58 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:52,619 INFO L231 Difference]: Finished difference. Result has 119 places, 156 transitions, 2288 flow [2023-01-28 02:45:52,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2288, PETRI_PLACES=119, PETRI_TRANSITIONS=156} [2023-01-28 02:45:52,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2023-01-28 02:45:52,620 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 156 transitions, 2288 flow [2023-01-28 02:45:52,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:45:52,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:52,621 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:52,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-28 02:45:52,621 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:52,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1868110369, now seen corresponding path program 2 times [2023-01-28 02:45:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:52,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474024864] [2023-01-28 02:45:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:52,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:52,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:52,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474024864] [2023-01-28 02:45:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474024864] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:52,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:45:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194730602] [2023-01-28 02:45:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:45:52,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:45:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:45:52,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:45:52,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 156 transitions, 2288 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:45:52,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:52,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:45:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:53,588 INFO L130 PetriNetUnfolder]: 2632/4095 cut-off events. [2023-01-28 02:45:53,588 INFO L131 PetriNetUnfolder]: For 37908/37908 co-relation queries the response was YES. [2023-01-28 02:45:53,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23548 conditions, 4095 events. 2632/4095 cut-off events. For 37908/37908 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21943 event pairs, 360 based on Foata normal form. 10/4005 useless extension candidates. Maximal degree in co-relation 23483. Up to 1949 conditions per place. [2023-01-28 02:45:53,626 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 170 selfloop transitions, 62 changer transitions 0/232 dead transitions. [2023-01-28 02:45:53,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 232 transitions, 3301 flow [2023-01-28 02:45:53,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:53,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2023-01-28 02:45:53,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36335000926440614 [2023-01-28 02:45:53,629 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2023-01-28 02:45:53,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2023-01-28 02:45:53,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:53,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2023-01-28 02:45:53,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 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) [2023-01-28 02:45:53,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:53,637 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:53,637 INFO L175 Difference]: Start difference. First operand has 119 places, 156 transitions, 2288 flow. Second operand 7 states and 1961 transitions. [2023-01-28 02:45:53,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 232 transitions, 3301 flow [2023-01-28 02:45:53,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 232 transitions, 3149 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-01-28 02:45:53,753 INFO L231 Difference]: Finished difference. Result has 125 places, 161 transitions, 2422 flow [2023-01-28 02:45:53,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2422, PETRI_PLACES=125, PETRI_TRANSITIONS=161} [2023-01-28 02:45:53,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2023-01-28 02:45:53,754 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 161 transitions, 2422 flow [2023-01-28 02:45:53,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:45:53,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:53,754 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:53,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-28 02:45:53,755 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:53,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash -88271522, now seen corresponding path program 3 times [2023-01-28 02:45:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:53,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529270067] [2023-01-28 02:45:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:54,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:54,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529270067] [2023-01-28 02:45:54,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529270067] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:54,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:54,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:54,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009070128] [2023-01-28 02:45:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:54,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:54,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:54,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:54,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:45:54,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 161 transitions, 2422 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:54,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:54,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:45:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:54,770 INFO L130 PetriNetUnfolder]: 2656/4141 cut-off events. [2023-01-28 02:45:54,770 INFO L131 PetriNetUnfolder]: For 44803/44803 co-relation queries the response was YES. [2023-01-28 02:45:54,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23933 conditions, 4141 events. 2656/4141 cut-off events. For 44803/44803 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22373 event pairs, 510 based on Foata normal form. 8/4049 useless extension candidates. Maximal degree in co-relation 23867. Up to 1987 conditions per place. [2023-01-28 02:45:54,812 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 239 selfloop transitions, 45 changer transitions 0/284 dead transitions. [2023-01-28 02:45:54,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 284 transitions, 4336 flow [2023-01-28 02:45:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:45:54,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:45:54,815 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:45:54,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:45:54,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:54,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:45:54,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:45:54,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:54,822 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:54,822 INFO L175 Difference]: Start difference. First operand has 125 places, 161 transitions, 2422 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:45:54,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 284 transitions, 4336 flow [2023-01-28 02:45:54,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 284 transitions, 4206 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-28 02:45:54,935 INFO L231 Difference]: Finished difference. Result has 132 places, 171 transitions, 2637 flow [2023-01-28 02:45:54,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2637, PETRI_PLACES=132, PETRI_TRANSITIONS=171} [2023-01-28 02:45:54,937 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 102 predicate places. [2023-01-28 02:45:54,937 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 171 transitions, 2637 flow [2023-01-28 02:45:54,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:54,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:54,937 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:54,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-28 02:45:54,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:54,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1399279322, now seen corresponding path program 4 times [2023-01-28 02:45:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:54,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883201643] [2023-01-28 02:45:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:55,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883201643] [2023-01-28 02:45:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883201643] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:55,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:55,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468098827] [2023-01-28 02:45:55,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:55,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:45:55,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 171 transitions, 2637 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:55,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:55,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:45:55,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:56,091 INFO L130 PetriNetUnfolder]: 2650/4135 cut-off events. [2023-01-28 02:45:56,101 INFO L131 PetriNetUnfolder]: For 44143/44143 co-relation queries the response was YES. [2023-01-28 02:45:56,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24232 conditions, 4135 events. 2650/4135 cut-off events. For 44143/44143 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22382 event pairs, 508 based on Foata normal form. 6/4041 useless extension candidates. Maximal degree in co-relation 24163. Up to 1987 conditions per place. [2023-01-28 02:45:56,125 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 229 selfloop transitions, 44 changer transitions 8/281 dead transitions. [2023-01-28 02:45:56,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 281 transitions, 4328 flow [2023-01-28 02:45:56,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:56,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:56,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 02:45:56,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 02:45:56,129 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 02:45:56,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 02:45:56,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:56,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 02:45:56,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 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) [2023-01-28 02:45:56,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:56,136 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:56,136 INFO L175 Difference]: Start difference. First operand has 132 places, 171 transitions, 2637 flow. Second operand 7 states and 2000 transitions. [2023-01-28 02:45:56,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 281 transitions, 4328 flow [2023-01-28 02:45:56,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 281 transitions, 4232 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-01-28 02:45:56,226 INFO L231 Difference]: Finished difference. Result has 136 places, 173 transitions, 2668 flow [2023-01-28 02:45:56,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2668, PETRI_PLACES=136, PETRI_TRANSITIONS=173} [2023-01-28 02:45:56,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 106 predicate places. [2023-01-28 02:45:56,227 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 173 transitions, 2668 flow [2023-01-28 02:45:56,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:56,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:56,228 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:56,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 02:45:56,228 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:56,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1257207031, now seen corresponding path program 3 times [2023-01-28 02:45:56,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:56,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969888203] [2023-01-28 02:45:56,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:56,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:56,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:56,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969888203] [2023-01-28 02:45:56,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969888203] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:56,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:56,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274993980] [2023-01-28 02:45:56,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:56,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:56,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:56,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:45:56,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 173 transitions, 2668 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:56,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:56,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:45:56,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:57,370 INFO L130 PetriNetUnfolder]: 2661/4150 cut-off events. [2023-01-28 02:45:57,370 INFO L131 PetriNetUnfolder]: For 45163/45163 co-relation queries the response was YES. [2023-01-28 02:45:57,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24473 conditions, 4150 events. 2661/4150 cut-off events. For 45163/45163 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22466 event pairs, 480 based on Foata normal form. 10/4060 useless extension candidates. Maximal degree in co-relation 24403. Up to 1724 conditions per place. [2023-01-28 02:45:57,401 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 251 selfloop transitions, 42 changer transitions 0/293 dead transitions. [2023-01-28 02:45:57,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 293 transitions, 4464 flow [2023-01-28 02:45:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 02:45:57,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 02:45:57,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 02:45:57,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 02:45:57,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:57,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 02:45:57,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 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) [2023-01-28 02:45:57,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:57,410 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:57,410 INFO L175 Difference]: Start difference. First operand has 136 places, 173 transitions, 2668 flow. Second operand 7 states and 2009 transitions. [2023-01-28 02:45:57,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 293 transitions, 4464 flow [2023-01-28 02:45:57,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 293 transitions, 4372 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-01-28 02:45:57,512 INFO L231 Difference]: Finished difference. Result has 139 places, 174 transitions, 2689 flow [2023-01-28 02:45:57,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2689, PETRI_PLACES=139, PETRI_TRANSITIONS=174} [2023-01-28 02:45:57,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2023-01-28 02:45:57,513 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 174 transitions, 2689 flow [2023-01-28 02:45:57,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:57,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:57,513 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:57,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 02:45:57,514 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:57,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1947204471, now seen corresponding path program 4 times [2023-01-28 02:45:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:57,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957117374] [2023-01-28 02:45:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:57,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:57,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:57,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957117374] [2023-01-28 02:45:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957117374] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:57,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:57,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:57,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520476761] [2023-01-28 02:45:57,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:57,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:57,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:57,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:57,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:57,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:45:57,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 174 transitions, 2689 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:57,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:57,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:45:57,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:58,661 INFO L130 PetriNetUnfolder]: 2661/4149 cut-off events. [2023-01-28 02:45:58,661 INFO L131 PetriNetUnfolder]: For 45314/45314 co-relation queries the response was YES. [2023-01-28 02:45:58,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24426 conditions, 4149 events. 2661/4149 cut-off events. For 45314/45314 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22461 event pairs, 476 based on Foata normal form. 10/4063 useless extension candidates. Maximal degree in co-relation 24355. Up to 1724 conditions per place. [2023-01-28 02:45:58,693 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 249 selfloop transitions, 39 changer transitions 0/288 dead transitions. [2023-01-28 02:45:58,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 288 transitions, 4422 flow [2023-01-28 02:45:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:45:58,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:45:58,695 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:45:58,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:45:58,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:58,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:45:58,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:45:58,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:58,701 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:58,701 INFO L175 Difference]: Start difference. First operand has 139 places, 174 transitions, 2689 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:45:58,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 288 transitions, 4422 flow [2023-01-28 02:45:58,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 288 transitions, 4337 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 02:45:58,803 INFO L231 Difference]: Finished difference. Result has 142 places, 173 transitions, 2687 flow [2023-01-28 02:45:58,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2571, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2687, PETRI_PLACES=142, PETRI_TRANSITIONS=173} [2023-01-28 02:45:58,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2023-01-28 02:45:58,803 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 173 transitions, 2687 flow [2023-01-28 02:45:58,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:45:58,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:45:58,804 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:45:58,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-28 02:45:58,804 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:45:58,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:45:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1948393763, now seen corresponding path program 5 times [2023-01-28 02:45:58,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:45:58,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736187032] [2023-01-28 02:45:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:45:58,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:45:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:45:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:45:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:45:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736187032] [2023-01-28 02:45:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736187032] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:45:59,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:45:59,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:45:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643476686] [2023-01-28 02:45:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:45:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:45:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:45:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:45:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:45:59,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:45:59,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 173 transitions, 2687 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:45:59,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:45:59,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:45:59,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:45:59,838 INFO L130 PetriNetUnfolder]: 2828/4578 cut-off events. [2023-01-28 02:45:59,838 INFO L131 PetriNetUnfolder]: For 48786/48786 co-relation queries the response was YES. [2023-01-28 02:45:59,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26522 conditions, 4578 events. 2828/4578 cut-off events. For 48786/48786 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 26803 event pairs, 442 based on Foata normal form. 4/4486 useless extension candidates. Maximal degree in co-relation 26450. Up to 1336 conditions per place. [2023-01-28 02:45:59,871 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 240 selfloop transitions, 59 changer transitions 1/300 dead transitions. [2023-01-28 02:45:59,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 300 transitions, 4672 flow [2023-01-28 02:45:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:45:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:45:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1961 transitions. [2023-01-28 02:45:59,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36335000926440614 [2023-01-28 02:45:59,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1961 transitions. [2023-01-28 02:45:59,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1961 transitions. [2023-01-28 02:45:59,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:45:59,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1961 transitions. [2023-01-28 02:45:59,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.14285714285717) internal successors, (1961), 7 states have internal predecessors, (1961), 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) [2023-01-28 02:45:59,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:59,878 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:45:59,878 INFO L175 Difference]: Start difference. First operand has 142 places, 173 transitions, 2687 flow. Second operand 7 states and 1961 transitions. [2023-01-28 02:45:59,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 300 transitions, 4672 flow [2023-01-28 02:46:00,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 300 transitions, 4523 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-01-28 02:46:00,019 INFO L231 Difference]: Finished difference. Result has 147 places, 187 transitions, 3009 flow [2023-01-28 02:46:00,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3009, PETRI_PLACES=147, PETRI_TRANSITIONS=187} [2023-01-28 02:46:00,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-01-28 02:46:00,020 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 187 transitions, 3009 flow [2023-01-28 02:46:00,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:00,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:00,020 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:00,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-28 02:46:00,021 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:00,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:00,021 INFO L85 PathProgramCache]: Analyzing trace with hash 858781202, now seen corresponding path program 5 times [2023-01-28 02:46:00,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:00,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638150570] [2023-01-28 02:46:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:00,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:00,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638150570] [2023-01-28 02:46:00,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638150570] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355938207] [2023-01-28 02:46:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:00,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:00,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:00,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:00,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 187 transitions, 3009 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:00,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:00,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:00,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:01,067 INFO L130 PetriNetUnfolder]: 2809/4541 cut-off events. [2023-01-28 02:46:01,067 INFO L131 PetriNetUnfolder]: For 55597/55597 co-relation queries the response was YES. [2023-01-28 02:46:01,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26850 conditions, 4541 events. 2809/4541 cut-off events. For 55597/55597 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26350 event pairs, 604 based on Foata normal form. 6/4455 useless extension candidates. Maximal degree in co-relation 26775. Up to 2441 conditions per place. [2023-01-28 02:46:01,111 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 240 selfloop transitions, 40 changer transitions 6/286 dead transitions. [2023-01-28 02:46:01,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 286 transitions, 4578 flow [2023-01-28 02:46:01,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 02:46:01,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 02:46:01,114 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 02:46:01,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 02:46:01,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:01,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 02:46:01,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 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) [2023-01-28 02:46:01,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:01,120 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:01,120 INFO L175 Difference]: Start difference. First operand has 147 places, 187 transitions, 3009 flow. Second operand 7 states and 1999 transitions. [2023-01-28 02:46:01,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 286 transitions, 4578 flow [2023-01-28 02:46:01,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 286 transitions, 4443 flow, removed 38 selfloop flow, removed 5 redundant places. [2023-01-28 02:46:01,318 INFO L231 Difference]: Finished difference. Result has 147 places, 185 transitions, 2934 flow [2023-01-28 02:46:01,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2934, PETRI_PLACES=147, PETRI_TRANSITIONS=185} [2023-01-28 02:46:01,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2023-01-28 02:46:01,319 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 185 transitions, 2934 flow [2023-01-28 02:46:01,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:01,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:01,319 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:01,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-28 02:46:01,320 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:01,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 454415150, now seen corresponding path program 6 times [2023-01-28 02:46:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:01,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193645567] [2023-01-28 02:46:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:01,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193645567] [2023-01-28 02:46:01,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193645567] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:01,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:01,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:01,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831807046] [2023-01-28 02:46:01,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:01,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:01,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:01,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:01,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:01,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:01,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 185 transitions, 2934 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:01,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:01,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:01,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:02,680 INFO L130 PetriNetUnfolder]: 3872/6304 cut-off events. [2023-01-28 02:46:02,680 INFO L131 PetriNetUnfolder]: For 65432/65432 co-relation queries the response was YES. [2023-01-28 02:46:02,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35964 conditions, 6304 events. 3872/6304 cut-off events. For 65432/65432 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 39152 event pairs, 431 based on Foata normal form. 16/6228 useless extension candidates. Maximal degree in co-relation 35890. Up to 3505 conditions per place. [2023-01-28 02:46:02,725 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 297 selfloop transitions, 52 changer transitions 2/351 dead transitions. [2023-01-28 02:46:02,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 351 transitions, 5855 flow [2023-01-28 02:46:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 02:46:02,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 02:46:02,728 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 02:46:02,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 02:46:02,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:02,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 02:46:02,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 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) [2023-01-28 02:46:02,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:02,733 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:02,733 INFO L175 Difference]: Start difference. First operand has 147 places, 185 transitions, 2934 flow. Second operand 7 states and 1995 transitions. [2023-01-28 02:46:02,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 351 transitions, 5855 flow [2023-01-28 02:46:03,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 351 transitions, 5697 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-28 02:46:03,012 INFO L231 Difference]: Finished difference. Result has 152 places, 214 transitions, 3601 flow [2023-01-28 02:46:03,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=2850, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3601, PETRI_PLACES=152, PETRI_TRANSITIONS=214} [2023-01-28 02:46:03,013 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2023-01-28 02:46:03,013 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 214 transitions, 3601 flow [2023-01-28 02:46:03,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:03,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:03,014 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:03,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-28 02:46:03,014 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:03,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash 898739619, now seen corresponding path program 6 times [2023-01-28 02:46:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:03,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119791789] [2023-01-28 02:46:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:03,276 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:03,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:03,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119791789] [2023-01-28 02:46:03,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119791789] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:03,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:03,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:03,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305865706] [2023-01-28 02:46:03,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:03,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:03,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:03,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:46:03,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 214 transitions, 3601 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:03,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:03,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:46:03,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:04,557 INFO L130 PetriNetUnfolder]: 4122/6774 cut-off events. [2023-01-28 02:46:04,557 INFO L131 PetriNetUnfolder]: For 82006/82006 co-relation queries the response was YES. [2023-01-28 02:46:04,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40124 conditions, 6774 events. 4122/6774 cut-off events. For 82006/82006 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 43419 event pairs, 730 based on Foata normal form. 10/6692 useless extension candidates. Maximal degree in co-relation 40045. Up to 3909 conditions per place. [2023-01-28 02:46:04,597 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 268 selfloop transitions, 83 changer transitions 0/351 dead transitions. [2023-01-28 02:46:04,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 351 transitions, 5986 flow [2023-01-28 02:46:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2023-01-28 02:46:04,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3639058736335001 [2023-01-28 02:46:04,599 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2023-01-28 02:46:04,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2023-01-28 02:46:04,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:04,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2023-01-28 02:46:04,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 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) [2023-01-28 02:46:04,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:04,604 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:04,604 INFO L175 Difference]: Start difference. First operand has 152 places, 214 transitions, 3601 flow. Second operand 7 states and 1964 transitions. [2023-01-28 02:46:04,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 351 transitions, 5986 flow [2023-01-28 02:46:04,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 351 transitions, 5934 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-01-28 02:46:04,903 INFO L231 Difference]: Finished difference. Result has 161 places, 242 transitions, 4411 flow [2023-01-28 02:46:04,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4411, PETRI_PLACES=161, PETRI_TRANSITIONS=242} [2023-01-28 02:46:04,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2023-01-28 02:46:04,903 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 242 transitions, 4411 flow [2023-01-28 02:46:04,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:04,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:04,904 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:04,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-28 02:46:04,904 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:04,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1280703030, now seen corresponding path program 7 times [2023-01-28 02:46:04,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:04,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662713527] [2023-01-28 02:46:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:04,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:05,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662713527] [2023-01-28 02:46:05,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662713527] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:05,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:05,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060842361] [2023-01-28 02:46:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:05,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:05,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:05,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:46:05,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 242 transitions, 4411 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:05,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:05,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:46:05,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:06,543 INFO L130 PetriNetUnfolder]: 4524/7452 cut-off events. [2023-01-28 02:46:06,544 INFO L131 PetriNetUnfolder]: For 100360/100360 co-relation queries the response was YES. [2023-01-28 02:46:06,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45761 conditions, 7452 events. 4524/7452 cut-off events. For 100360/100360 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 48824 event pairs, 425 based on Foata normal form. 16/7372 useless extension candidates. Maximal degree in co-relation 45678. Up to 3171 conditions per place. [2023-01-28 02:46:06,608 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 348 selfloop transitions, 129 changer transitions 1/478 dead transitions. [2023-01-28 02:46:06,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 478 transitions, 8384 flow [2023-01-28 02:46:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:46:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:46:06,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2526 transitions. [2023-01-28 02:46:06,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3640293990488543 [2023-01-28 02:46:06,611 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2526 transitions. [2023-01-28 02:46:06,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2526 transitions. [2023-01-28 02:46:06,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:06,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2526 transitions. [2023-01-28 02:46:06,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.6666666666667) internal successors, (2526), 9 states have internal predecessors, (2526), 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) [2023-01-28 02:46:06,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:46:06,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:46:06,617 INFO L175 Difference]: Start difference. First operand has 161 places, 242 transitions, 4411 flow. Second operand 9 states and 2526 transitions. [2023-01-28 02:46:06,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 478 transitions, 8384 flow [2023-01-28 02:46:07,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 478 transitions, 8253 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:07,072 INFO L231 Difference]: Finished difference. Result has 174 places, 311 transitions, 5926 flow [2023-01-28 02:46:07,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=4331, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5926, PETRI_PLACES=174, PETRI_TRANSITIONS=311} [2023-01-28 02:46:07,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2023-01-28 02:46:07,073 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 311 transitions, 5926 flow [2023-01-28 02:46:07,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:07,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:07,073 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:07,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-01-28 02:46:07,073 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:07,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash -669426035, now seen corresponding path program 7 times [2023-01-28 02:46:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601413428] [2023-01-28 02:46:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:07,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601413428] [2023-01-28 02:46:07,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601413428] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:07,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404463527] [2023-01-28 02:46:07,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:07,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:07,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:07,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 311 transitions, 5926 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:07,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:07,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:07,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:08,831 INFO L130 PetriNetUnfolder]: 4520/7448 cut-off events. [2023-01-28 02:46:08,831 INFO L131 PetriNetUnfolder]: For 114626/114626 co-relation queries the response was YES. [2023-01-28 02:46:08,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49413 conditions, 7448 events. 4520/7448 cut-off events. For 114626/114626 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 48656 event pairs, 842 based on Foata normal form. 4/7356 useless extension candidates. Maximal degree in co-relation 49324. Up to 4512 conditions per place. [2023-01-28 02:46:08,899 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 300 selfloop transitions, 100 changer transitions 5/405 dead transitions. [2023-01-28 02:46:08,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 405 transitions, 7731 flow [2023-01-28 02:46:08,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1996 transitions. [2023-01-28 02:46:08,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36983509357050215 [2023-01-28 02:46:08,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1996 transitions. [2023-01-28 02:46:08,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1996 transitions. [2023-01-28 02:46:08,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:08,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1996 transitions. [2023-01-28 02:46:08,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 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) [2023-01-28 02:46:08,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:08,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:08,906 INFO L175 Difference]: Start difference. First operand has 174 places, 311 transitions, 5926 flow. Second operand 7 states and 1996 transitions. [2023-01-28 02:46:08,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 405 transitions, 7731 flow [2023-01-28 02:46:09,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 405 transitions, 7661 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-01-28 02:46:09,683 INFO L231 Difference]: Finished difference. Result has 181 places, 312 transitions, 6097 flow [2023-01-28 02:46:09,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6097, PETRI_PLACES=181, PETRI_TRANSITIONS=312} [2023-01-28 02:46:09,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2023-01-28 02:46:09,684 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 312 transitions, 6097 flow [2023-01-28 02:46:09,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:09,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:09,684 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:09,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-01-28 02:46:09,685 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:09,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:09,685 INFO L85 PathProgramCache]: Analyzing trace with hash 502177370, now seen corresponding path program 8 times [2023-01-28 02:46:09,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:09,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887866701] [2023-01-28 02:46:09,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:09,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:09,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:09,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887866701] [2023-01-28 02:46:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887866701] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:09,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572921136] [2023-01-28 02:46:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:09,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:09,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:09,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:09,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:09,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 312 transitions, 6097 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:09,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:09,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:09,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:11,571 INFO L130 PetriNetUnfolder]: 4576/7658 cut-off events. [2023-01-28 02:46:11,571 INFO L131 PetriNetUnfolder]: For 121527/121527 co-relation queries the response was YES. [2023-01-28 02:46:11,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51369 conditions, 7658 events. 4576/7658 cut-off events. For 121527/121527 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 51388 event pairs, 756 based on Foata normal form. 16/7578 useless extension candidates. Maximal degree in co-relation 51278. Up to 3836 conditions per place. [2023-01-28 02:46:11,641 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 86 changer transitions 1/425 dead transitions. [2023-01-28 02:46:11,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 425 transitions, 8217 flow [2023-01-28 02:46:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:11,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:11,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:46:11,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:46:11,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:46:11,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:46:11,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:11,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:46:11,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:46:11,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:11,649 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:11,649 INFO L175 Difference]: Start difference. First operand has 181 places, 312 transitions, 6097 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:46:11,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 425 transitions, 8217 flow [2023-01-28 02:46:12,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 425 transitions, 8053 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:12,447 INFO L231 Difference]: Finished difference. Result has 186 places, 317 transitions, 6275 flow [2023-01-28 02:46:12,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=5933, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6275, PETRI_PLACES=186, PETRI_TRANSITIONS=317} [2023-01-28 02:46:12,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2023-01-28 02:46:12,448 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 317 transitions, 6275 flow [2023-01-28 02:46:12,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:12,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:12,449 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:12,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-01-28 02:46:12,449 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:12,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash 703973021, now seen corresponding path program 8 times [2023-01-28 02:46:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237810007] [2023-01-28 02:46:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:12,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:12,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:12,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237810007] [2023-01-28 02:46:12,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237810007] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:12,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:12,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:12,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114111968] [2023-01-28 02:46:12,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:12,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:12,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:12,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:12,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:12,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:12,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 317 transitions, 6275 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:12,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:12,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:12,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:14,332 INFO L130 PetriNetUnfolder]: 4628/7834 cut-off events. [2023-01-28 02:46:14,332 INFO L131 PetriNetUnfolder]: For 127980/127980 co-relation queries the response was YES. [2023-01-28 02:46:14,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52757 conditions, 7834 events. 4628/7834 cut-off events. For 127980/127980 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 53588 event pairs, 1040 based on Foata normal form. 4/7742 useless extension candidates. Maximal degree in co-relation 52663. Up to 4710 conditions per place. [2023-01-28 02:46:14,419 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 323 selfloop transitions, 121 changer transitions 4/448 dead transitions. [2023-01-28 02:46:14,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 448 transitions, 8796 flow [2023-01-28 02:46:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 02:46:14,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 02:46:14,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 02:46:14,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 02:46:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:14,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 02:46:14,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 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) [2023-01-28 02:46:14,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:14,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:14,426 INFO L175 Difference]: Start difference. First operand has 186 places, 317 transitions, 6275 flow. Second operand 7 states and 1999 transitions. [2023-01-28 02:46:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 448 transitions, 8796 flow [2023-01-28 02:46:15,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 448 transitions, 8578 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:15,399 INFO L231 Difference]: Finished difference. Result has 193 places, 337 transitions, 6759 flow [2023-01-28 02:46:15,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6091, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6759, PETRI_PLACES=193, PETRI_TRANSITIONS=337} [2023-01-28 02:46:15,400 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-01-28 02:46:15,400 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 337 transitions, 6759 flow [2023-01-28 02:46:15,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:15,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:15,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:15,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-01-28 02:46:15,400 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:15,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash -171246378, now seen corresponding path program 9 times [2023-01-28 02:46:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614284207] [2023-01-28 02:46:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:15,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614284207] [2023-01-28 02:46:15,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614284207] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:15,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:15,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:15,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421299874] [2023-01-28 02:46:15,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:15,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:15,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:15,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 337 transitions, 6759 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:15,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:15,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:15,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:17,372 INFO L130 PetriNetUnfolder]: 4941/8391 cut-off events. [2023-01-28 02:46:17,373 INFO L131 PetriNetUnfolder]: For 140156/140156 co-relation queries the response was YES. [2023-01-28 02:46:17,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56837 conditions, 8391 events. 4941/8391 cut-off events. For 140156/140156 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 58371 event pairs, 982 based on Foata normal form. 8/8303 useless extension candidates. Maximal degree in co-relation 56739. Up to 2647 conditions per place. [2023-01-28 02:46:17,446 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 370 selfloop transitions, 115 changer transitions 0/485 dead transitions. [2023-01-28 02:46:17,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 485 transitions, 9743 flow [2023-01-28 02:46:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 02:46:17,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 02:46:17,448 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 02:46:17,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 02:46:17,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:17,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 02:46:17,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 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) [2023-01-28 02:46:17,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:17,452 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:17,452 INFO L175 Difference]: Start difference. First operand has 193 places, 337 transitions, 6759 flow. Second operand 7 states and 2008 transitions. [2023-01-28 02:46:17,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 485 transitions, 9743 flow [2023-01-28 02:46:18,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 485 transitions, 9661 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-28 02:46:18,429 INFO L231 Difference]: Finished difference. Result has 199 places, 350 transitions, 7310 flow [2023-01-28 02:46:18,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7310, PETRI_PLACES=199, PETRI_TRANSITIONS=350} [2023-01-28 02:46:18,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2023-01-28 02:46:18,430 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 350 transitions, 7310 flow [2023-01-28 02:46:18,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:18,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:18,430 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:18,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-01-28 02:46:18,430 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:18,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:18,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1404101974, now seen corresponding path program 10 times [2023-01-28 02:46:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893381460] [2023-01-28 02:46:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:18,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:18,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:18,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893381460] [2023-01-28 02:46:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893381460] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:18,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:18,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:46:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253440603] [2023-01-28 02:46:18,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:18,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:46:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:46:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:46:18,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:18,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 350 transitions, 7310 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:46:18,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:18,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:18,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:20,575 INFO L130 PetriNetUnfolder]: 4910/8324 cut-off events. [2023-01-28 02:46:20,575 INFO L131 PetriNetUnfolder]: For 150792/150792 co-relation queries the response was YES. [2023-01-28 02:46:20,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57296 conditions, 8324 events. 4910/8324 cut-off events. For 150792/150792 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 57633 event pairs, 968 based on Foata normal form. 12/8240 useless extension candidates. Maximal degree in co-relation 57196. Up to 4569 conditions per place. [2023-01-28 02:46:20,657 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 122 changer transitions 0/460 dead transitions. [2023-01-28 02:46:20,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 460 transitions, 9542 flow [2023-01-28 02:46:20,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 02:46:20,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 02:46:20,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 02:46:20,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 02:46:20,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:20,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 02:46:20,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 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) [2023-01-28 02:46:20,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:20,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:20,664 INFO L175 Difference]: Start difference. First operand has 199 places, 350 transitions, 7310 flow. Second operand 7 states and 2003 transitions. [2023-01-28 02:46:20,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 460 transitions, 9542 flow [2023-01-28 02:46:21,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 460 transitions, 9240 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-01-28 02:46:21,671 INFO L231 Difference]: Finished difference. Result has 202 places, 350 transitions, 7275 flow [2023-01-28 02:46:21,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7022, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7275, PETRI_PLACES=202, PETRI_TRANSITIONS=350} [2023-01-28 02:46:21,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 172 predicate places. [2023-01-28 02:46:21,672 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 350 transitions, 7275 flow [2023-01-28 02:46:21,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:46:21,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:21,672 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-01-28 02:46:21,672 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:21,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash 239437526, now seen corresponding path program 11 times [2023-01-28 02:46:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110893351] [2023-01-28 02:46:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:21,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:21,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:21,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110893351] [2023-01-28 02:46:21,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110893351] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:21,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:21,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145817027] [2023-01-28 02:46:21,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:21,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:21,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:21,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:21,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:21,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:21,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 350 transitions, 7275 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:21,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:21,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:21,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:23,647 INFO L130 PetriNetUnfolder]: 4894/8294 cut-off events. [2023-01-28 02:46:23,647 INFO L131 PetriNetUnfolder]: For 146763/146763 co-relation queries the response was YES. [2023-01-28 02:46:23,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57092 conditions, 8294 events. 4894/8294 cut-off events. For 146763/146763 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 57422 event pairs, 968 based on Foata normal form. 6/8204 useless extension candidates. Maximal degree in co-relation 56991. Up to 4569 conditions per place. [2023-01-28 02:46:23,718 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 346 selfloop transitions, 103 changer transitions 6/455 dead transitions. [2023-01-28 02:46:23,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 455 transitions, 9438 flow [2023-01-28 02:46:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:23,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:23,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 02:46:23,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 02:46:23,721 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 02:46:23,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 02:46:23,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:23,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 02:46:23,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 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) [2023-01-28 02:46:23,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:23,725 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:23,725 INFO L175 Difference]: Start difference. First operand has 202 places, 350 transitions, 7275 flow. Second operand 7 states and 1997 transitions. [2023-01-28 02:46:23,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 455 transitions, 9438 flow [2023-01-28 02:46:24,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 455 transitions, 9312 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:24,539 INFO L231 Difference]: Finished difference. Result has 206 places, 349 transitions, 7347 flow [2023-01-28 02:46:24,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7347, PETRI_PLACES=206, PETRI_TRANSITIONS=349} [2023-01-28 02:46:24,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-01-28 02:46:24,540 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 349 transitions, 7347 flow [2023-01-28 02:46:24,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:24,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:24,540 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:24,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-01-28 02:46:24,540 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:24,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:24,541 INFO L85 PathProgramCache]: Analyzing trace with hash -42669151, now seen corresponding path program 9 times [2023-01-28 02:46:24,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:24,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309677922] [2023-01-28 02:46:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:24,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:24,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309677922] [2023-01-28 02:46:24,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309677922] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:24,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:24,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136722714] [2023-01-28 02:46:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:24,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:24,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:24,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 349 transitions, 7347 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:24,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:24,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:24,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:26,743 INFO L130 PetriNetUnfolder]: 4881/8263 cut-off events. [2023-01-28 02:46:26,743 INFO L131 PetriNetUnfolder]: For 150786/150786 co-relation queries the response was YES. [2023-01-28 02:46:26,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57088 conditions, 8263 events. 4881/8263 cut-off events. For 150786/150786 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 56989 event pairs, 1152 based on Foata normal form. 4/8171 useless extension candidates. Maximal degree in co-relation 56986. Up to 5372 conditions per place. [2023-01-28 02:46:26,820 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 322 selfloop transitions, 115 changer transitions 4/441 dead transitions. [2023-01-28 02:46:26,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 441 transitions, 9271 flow [2023-01-28 02:46:26,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:26,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 02:46:26,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 02:46:26,823 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 02:46:26,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 02:46:26,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:26,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 02:46:26,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 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) [2023-01-28 02:46:26,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:26,827 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:26,827 INFO L175 Difference]: Start difference. First operand has 206 places, 349 transitions, 7347 flow. Second operand 7 states and 1997 transitions. [2023-01-28 02:46:26,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 441 transitions, 9271 flow [2023-01-28 02:46:27,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 441 transitions, 9053 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-01-28 02:46:27,733 INFO L231 Difference]: Finished difference. Result has 206 places, 347 transitions, 7309 flow [2023-01-28 02:46:27,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7309, PETRI_PLACES=206, PETRI_TRANSITIONS=347} [2023-01-28 02:46:27,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-01-28 02:46:27,734 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 347 transitions, 7309 flow [2023-01-28 02:46:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:27,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:27,734 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:27,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-01-28 02:46:27,735 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:27,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 416811670, now seen corresponding path program 12 times [2023-01-28 02:46:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225109652] [2023-01-28 02:46:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:27,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:27,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:27,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225109652] [2023-01-28 02:46:27,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225109652] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:27,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:27,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:27,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617716273] [2023-01-28 02:46:27,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:27,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:27,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:27,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:27,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:27,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 347 transitions, 7309 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:27,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:27,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:27,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:29,870 INFO L130 PetriNetUnfolder]: 4862/8226 cut-off events. [2023-01-28 02:46:29,871 INFO L131 PetriNetUnfolder]: For 155431/155431 co-relation queries the response was YES. [2023-01-28 02:46:29,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56919 conditions, 8226 events. 4862/8226 cut-off events. For 155431/155431 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 56586 event pairs, 1190 based on Foata normal form. 6/8136 useless extension candidates. Maximal degree in co-relation 56817. Up to 5371 conditions per place. [2023-01-28 02:46:29,968 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 302 selfloop transitions, 156 changer transitions 9/467 dead transitions. [2023-01-28 02:46:29,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 467 transitions, 9773 flow [2023-01-28 02:46:29,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 02:46:29,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 02:46:29,970 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 02:46:29,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 02:46:29,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:29,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 02:46:29,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 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) [2023-01-28 02:46:29,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:29,975 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:29,975 INFO L175 Difference]: Start difference. First operand has 206 places, 347 transitions, 7309 flow. Second operand 7 states and 2005 transitions. [2023-01-28 02:46:29,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 467 transitions, 9773 flow [2023-01-28 02:46:30,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 467 transitions, 9524 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:30,994 INFO L231 Difference]: Finished difference. Result has 212 places, 378 transitions, 8062 flow [2023-01-28 02:46:30,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7116, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8062, PETRI_PLACES=212, PETRI_TRANSITIONS=378} [2023-01-28 02:46:30,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-01-28 02:46:30,995 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 378 transitions, 8062 flow [2023-01-28 02:46:30,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:30,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:30,996 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:30,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-01-28 02:46:30,996 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:30,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:30,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1323801734, now seen corresponding path program 13 times [2023-01-28 02:46:30,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:30,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572359353] [2023-01-28 02:46:30,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:30,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:31,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:31,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572359353] [2023-01-28 02:46:31,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572359353] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:31,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:31,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:31,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380321846] [2023-01-28 02:46:31,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:31,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:31,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:31,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 378 transitions, 8062 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:31,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:31,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:31,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:33,099 INFO L130 PetriNetUnfolder]: 4992/8454 cut-off events. [2023-01-28 02:46:33,099 INFO L131 PetriNetUnfolder]: For 161899/161899 co-relation queries the response was YES. [2023-01-28 02:46:33,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59136 conditions, 8454 events. 4992/8454 cut-off events. For 161899/161899 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 58535 event pairs, 1252 based on Foata normal form. 4/8362 useless extension candidates. Maximal degree in co-relation 59030. Up to 5391 conditions per place. [2023-01-28 02:46:33,175 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 312 selfloop transitions, 168 changer transitions 0/480 dead transitions. [2023-01-28 02:46:33,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 480 transitions, 10297 flow [2023-01-28 02:46:33,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-28 02:46:33,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-28 02:46:33,177 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-28 02:46:33,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-28 02:46:33,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:33,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-28 02:46:33,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 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) [2023-01-28 02:46:33,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:33,192 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:33,192 INFO L175 Difference]: Start difference. First operand has 212 places, 378 transitions, 8062 flow. Second operand 7 states and 2012 transitions. [2023-01-28 02:46:33,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 480 transitions, 10297 flow [2023-01-28 02:46:34,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 480 transitions, 10124 flow, removed 25 selfloop flow, removed 5 redundant places. [2023-01-28 02:46:34,169 INFO L231 Difference]: Finished difference. Result has 216 places, 401 transitions, 8888 flow [2023-01-28 02:46:34,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8888, PETRI_PLACES=216, PETRI_TRANSITIONS=401} [2023-01-28 02:46:34,170 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-01-28 02:46:34,170 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 401 transitions, 8888 flow [2023-01-28 02:46:34,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:34,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:34,170 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:34,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-01-28 02:46:34,170 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:34,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:34,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1390050419, now seen corresponding path program 10 times [2023-01-28 02:46:34,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:34,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939640806] [2023-01-28 02:46:34,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:34,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:34,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:34,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939640806] [2023-01-28 02:46:34,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939640806] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:34,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:34,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143162534] [2023-01-28 02:46:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:34,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:34,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:34,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 401 transitions, 8888 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:34,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:34,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:34,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:36,371 INFO L130 PetriNetUnfolder]: 5266/8922 cut-off events. [2023-01-28 02:46:36,371 INFO L131 PetriNetUnfolder]: For 174951/174951 co-relation queries the response was YES. [2023-01-28 02:46:36,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62264 conditions, 8922 events. 5266/8922 cut-off events. For 174951/174951 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 62359 event pairs, 1192 based on Foata normal form. 32/8858 useless extension candidates. Maximal degree in co-relation 62158. Up to 3078 conditions per place. [2023-01-28 02:46:36,456 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 357 selfloop transitions, 170 changer transitions 0/527 dead transitions. [2023-01-28 02:46:36,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 527 transitions, 11557 flow [2023-01-28 02:46:36,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:36,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:36,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2016 transitions. [2023-01-28 02:46:36,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3735408560311284 [2023-01-28 02:46:36,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2016 transitions. [2023-01-28 02:46:36,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2016 transitions. [2023-01-28 02:46:36,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:36,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2016 transitions. [2023-01-28 02:46:36,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 288.0) internal successors, (2016), 7 states have internal predecessors, (2016), 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) [2023-01-28 02:46:36,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:36,463 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:36,463 INFO L175 Difference]: Start difference. First operand has 216 places, 401 transitions, 8888 flow. Second operand 7 states and 2016 transitions. [2023-01-28 02:46:36,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 527 transitions, 11557 flow [2023-01-28 02:46:37,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 527 transitions, 11304 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:37,498 INFO L231 Difference]: Finished difference. Result has 222 places, 417 transitions, 9581 flow [2023-01-28 02:46:37,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9581, PETRI_PLACES=222, PETRI_TRANSITIONS=417} [2023-01-28 02:46:37,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2023-01-28 02:46:37,499 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 417 transitions, 9581 flow [2023-01-28 02:46:37,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:37,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:37,499 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-01-28 02:46:37,500 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:37,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash -946825859, now seen corresponding path program 11 times [2023-01-28 02:46:37,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:37,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280401675] [2023-01-28 02:46:37,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:37,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:37,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280401675] [2023-01-28 02:46:37,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280401675] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:37,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:37,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:37,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793867199] [2023-01-28 02:46:37,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:37,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:37,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:46:37,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 417 transitions, 9581 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:37,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:37,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:46:37,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:39,741 INFO L130 PetriNetUnfolder]: 5624/9630 cut-off events. [2023-01-28 02:46:39,741 INFO L131 PetriNetUnfolder]: For 198065/198065 co-relation queries the response was YES. [2023-01-28 02:46:39,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67506 conditions, 9630 events. 5624/9630 cut-off events. For 198065/198065 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69377 event pairs, 1112 based on Foata normal form. 8/9542 useless extension candidates. Maximal degree in co-relation 67398. Up to 3378 conditions per place. [2023-01-28 02:46:39,854 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 368 selfloop transitions, 222 changer transitions 0/590 dead transitions. [2023-01-28 02:46:39,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 590 transitions, 13343 flow [2023-01-28 02:46:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:39,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1973 transitions. [2023-01-28 02:46:39,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655734667407819 [2023-01-28 02:46:39,857 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1973 transitions. [2023-01-28 02:46:39,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1973 transitions. [2023-01-28 02:46:39,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:39,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1973 transitions. [2023-01-28 02:46:39,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.85714285714283) internal successors, (1973), 7 states have internal predecessors, (1973), 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) [2023-01-28 02:46:39,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:39,860 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:39,860 INFO L175 Difference]: Start difference. First operand has 222 places, 417 transitions, 9581 flow. Second operand 7 states and 1973 transitions. [2023-01-28 02:46:39,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 590 transitions, 13343 flow [2023-01-28 02:46:41,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 590 transitions, 12937 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:41,189 INFO L231 Difference]: Finished difference. Result has 229 places, 456 transitions, 10573 flow [2023-01-28 02:46:41,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=9223, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10573, PETRI_PLACES=229, PETRI_TRANSITIONS=456} [2023-01-28 02:46:41,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2023-01-28 02:46:41,189 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 456 transitions, 10573 flow [2023-01-28 02:46:41,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:41,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:41,190 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:41,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-01-28 02:46:41,190 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:41,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1445794718, now seen corresponding path program 14 times [2023-01-28 02:46:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018845567] [2023-01-28 02:46:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:41,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:41,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:41,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018845567] [2023-01-28 02:46:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018845567] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:41,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:41,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004192154] [2023-01-28 02:46:41,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:41,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:41,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 456 transitions, 10573 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:41,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:41,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:41,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:43,654 INFO L130 PetriNetUnfolder]: 5618/9624 cut-off events. [2023-01-28 02:46:43,654 INFO L131 PetriNetUnfolder]: For 210069/210069 co-relation queries the response was YES. [2023-01-28 02:46:43,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69222 conditions, 9624 events. 5618/9624 cut-off events. For 210069/210069 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 69241 event pairs, 1416 based on Foata normal form. 6/9536 useless extension candidates. Maximal degree in co-relation 69110. Up to 6511 conditions per place. [2023-01-28 02:46:43,766 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 193 changer transitions 8/534 dead transitions. [2023-01-28 02:46:43,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 534 transitions, 12280 flow [2023-01-28 02:46:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 02:46:43,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 02:46:43,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 02:46:43,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 02:46:43,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:43,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 02:46:43,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 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) [2023-01-28 02:46:43,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:43,772 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:43,772 INFO L175 Difference]: Start difference. First operand has 229 places, 456 transitions, 10573 flow. Second operand 7 states and 2009 transitions. [2023-01-28 02:46:43,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 534 transitions, 12280 flow [2023-01-28 02:46:45,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 534 transitions, 12155 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-01-28 02:46:45,275 INFO L231 Difference]: Finished difference. Result has 234 places, 454 transitions, 10750 flow [2023-01-28 02:46:45,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10410, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10750, PETRI_PLACES=234, PETRI_TRANSITIONS=454} [2023-01-28 02:46:45,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2023-01-28 02:46:45,276 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 454 transitions, 10750 flow [2023-01-28 02:46:45,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:45,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:45,277 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:45,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-01-28 02:46:45,277 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:45,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1382716463, now seen corresponding path program 12 times [2023-01-28 02:46:45,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:45,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584356874] [2023-01-28 02:46:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:45,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584356874] [2023-01-28 02:46:45,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584356874] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:45,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:45,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:45,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300325118] [2023-01-28 02:46:45,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:45,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:45,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:45,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:45,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:45,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 454 transitions, 10750 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:45,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:45,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:45,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:47,693 INFO L130 PetriNetUnfolder]: 5571/9519 cut-off events. [2023-01-28 02:46:47,693 INFO L131 PetriNetUnfolder]: For 211877/211877 co-relation queries the response was YES. [2023-01-28 02:46:47,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68865 conditions, 9519 events. 5571/9519 cut-off events. For 211877/211877 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 68078 event pairs, 1298 based on Foata normal form. 26/9451 useless extension candidates. Maximal degree in co-relation 68753. Up to 3543 conditions per place. [2023-01-28 02:46:47,860 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 201 changer transitions 0/539 dead transitions. [2023-01-28 02:46:47,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 539 transitions, 12673 flow [2023-01-28 02:46:47,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:47,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:47,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2013 transitions. [2023-01-28 02:46:47,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37298499166203447 [2023-01-28 02:46:47,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2013 transitions. [2023-01-28 02:46:47,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2013 transitions. [2023-01-28 02:46:47,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:47,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2013 transitions. [2023-01-28 02:46:47,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.57142857142856) internal successors, (2013), 7 states have internal predecessors, (2013), 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) [2023-01-28 02:46:47,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:47,869 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:47,869 INFO L175 Difference]: Start difference. First operand has 234 places, 454 transitions, 10750 flow. Second operand 7 states and 2013 transitions. [2023-01-28 02:46:47,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 539 transitions, 12673 flow [2023-01-28 02:46:49,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 539 transitions, 12299 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 02:46:49,490 INFO L231 Difference]: Finished difference. Result has 237 places, 455 transitions, 10833 flow [2023-01-28 02:46:49,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10352, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10833, PETRI_PLACES=237, PETRI_TRANSITIONS=455} [2023-01-28 02:46:49,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2023-01-28 02:46:49,491 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 455 transitions, 10833 flow [2023-01-28 02:46:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:49,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:49,491 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:49,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-01-28 02:46:49,492 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:49,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1675786311, now seen corresponding path program 13 times [2023-01-28 02:46:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:49,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222271594] [2023-01-28 02:46:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:49,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:49,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222271594] [2023-01-28 02:46:49,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222271594] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:49,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:49,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:49,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161150796] [2023-01-28 02:46:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:49,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:49,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:49,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:49,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:49,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 455 transitions, 10833 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:49,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:49,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:51,971 INFO L130 PetriNetUnfolder]: 5556/9500 cut-off events. [2023-01-28 02:46:51,972 INFO L131 PetriNetUnfolder]: For 211382/211382 co-relation queries the response was YES. [2023-01-28 02:46:52,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68811 conditions, 9500 events. 5556/9500 cut-off events. For 211382/211382 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 68017 event pairs, 1270 based on Foata normal form. 8/9414 useless extension candidates. Maximal degree in co-relation 68699. Up to 3543 conditions per place. [2023-01-28 02:46:52,061 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 399 selfloop transitions, 156 changer transitions 1/556 dead transitions. [2023-01-28 02:46:52,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 556 transitions, 13053 flow [2023-01-28 02:46:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:52,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 02:46:52,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 02:46:52,063 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 02:46:52,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 02:46:52,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:52,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 02:46:52,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 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) [2023-01-28 02:46:52,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:52,067 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:52,067 INFO L175 Difference]: Start difference. First operand has 237 places, 455 transitions, 10833 flow. Second operand 7 states and 2009 transitions. [2023-01-28 02:46:52,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 556 transitions, 13053 flow [2023-01-28 02:46:53,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 556 transitions, 12666 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-28 02:46:53,325 INFO L231 Difference]: Finished difference. Result has 241 places, 457 transitions, 10866 flow [2023-01-28 02:46:53,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10448, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10866, PETRI_PLACES=241, PETRI_TRANSITIONS=457} [2023-01-28 02:46:53,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2023-01-28 02:46:53,326 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 457 transitions, 10866 flow [2023-01-28 02:46:53,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:53,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:53,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:53,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-01-28 02:46:53,326 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:53,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:53,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1374750287, now seen corresponding path program 14 times [2023-01-28 02:46:53,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:53,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062091473] [2023-01-28 02:46:53,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:53,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:53,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062091473] [2023-01-28 02:46:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062091473] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:46:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995017516] [2023-01-28 02:46:53,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:46:53,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:46:53,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:46:53,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:46:53,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:46:53,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:46:53,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:46:53,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2023-01-28 02:46:53,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:46:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:53,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:46:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:54,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995017516] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:46:54,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:46:54,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-01-28 02:46:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363092883] [2023-01-28 02:46:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:54,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:54,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:54,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:54,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-01-28 02:46:54,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:46:54,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 457 transitions, 10866 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:54,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:54,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:46:54,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:46:56,416 INFO L130 PetriNetUnfolder]: 5574/9514 cut-off events. [2023-01-28 02:46:56,416 INFO L131 PetriNetUnfolder]: For 215303/215303 co-relation queries the response was YES. [2023-01-28 02:46:56,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68931 conditions, 9514 events. 5574/9514 cut-off events. For 215303/215303 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 67943 event pairs, 1318 based on Foata normal form. 10/9430 useless extension candidates. Maximal degree in co-relation 68817. Up to 3543 conditions per place. [2023-01-28 02:46:56,548 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 164 changer transitions 0/559 dead transitions. [2023-01-28 02:46:56,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 559 transitions, 13191 flow [2023-01-28 02:46:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:46:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:46:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 02:46:56,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 02:46:56,551 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 02:46:56,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 02:46:56,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:46:56,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 02:46:56,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 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) [2023-01-28 02:46:56,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:56,556 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:46:56,556 INFO L175 Difference]: Start difference. First operand has 241 places, 457 transitions, 10866 flow. Second operand 7 states and 2008 transitions. [2023-01-28 02:46:56,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 559 transitions, 13191 flow [2023-01-28 02:46:57,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 559 transitions, 12828 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-01-28 02:46:57,902 INFO L231 Difference]: Finished difference. Result has 242 places, 464 transitions, 11091 flow [2023-01-28 02:46:57,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10453, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11091, PETRI_PLACES=242, PETRI_TRANSITIONS=464} [2023-01-28 02:46:57,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2023-01-28 02:46:57,903 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 464 transitions, 11091 flow [2023-01-28 02:46:57,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:46:57,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:46:57,904 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:46:57,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:46:58,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-01-28 02:46:58,109 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:46:58,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:46:58,110 INFO L85 PathProgramCache]: Analyzing trace with hash -261624810, now seen corresponding path program 15 times [2023-01-28 02:46:58,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:46:58,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349559089] [2023-01-28 02:46:58,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:46:58,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:46:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:46:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:46:58,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:46:58,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349559089] [2023-01-28 02:46:58,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349559089] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:46:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:46:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:46:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539187790] [2023-01-28 02:46:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:46:58,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:46:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:46:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:46:58,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:46:58,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:46:58,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 464 transitions, 11091 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:46:58,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:46:58,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:46:58,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:00,966 INFO L130 PetriNetUnfolder]: 5892/10536 cut-off events. [2023-01-28 02:47:00,966 INFO L131 PetriNetUnfolder]: For 221819/221819 co-relation queries the response was YES. [2023-01-28 02:47:01,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73713 conditions, 10536 events. 5892/10536 cut-off events. For 221819/221819 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 81982 event pairs, 767 based on Foata normal form. 8/10440 useless extension candidates. Maximal degree in co-relation 73599. Up to 5011 conditions per place. [2023-01-28 02:47:01,090 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 320 selfloop transitions, 285 changer transitions 0/605 dead transitions. [2023-01-28 02:47:01,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 605 transitions, 13865 flow [2023-01-28 02:47:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:47:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:47:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2806 transitions. [2023-01-28 02:47:01,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394293125810634 [2023-01-28 02:47:01,093 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2806 transitions. [2023-01-28 02:47:01,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2806 transitions. [2023-01-28 02:47:01,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:01,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2806 transitions. [2023-01-28 02:47:01,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.6) internal successors, (2806), 10 states have internal predecessors, (2806), 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) [2023-01-28 02:47:01,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 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) [2023-01-28 02:47:01,098 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 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) [2023-01-28 02:47:01,098 INFO L175 Difference]: Start difference. First operand has 242 places, 464 transitions, 11091 flow. Second operand 10 states and 2806 transitions. [2023-01-28 02:47:01,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 605 transitions, 13865 flow [2023-01-28 02:47:02,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 605 transitions, 13525 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-01-28 02:47:02,819 INFO L231 Difference]: Finished difference. Result has 251 places, 493 transitions, 12066 flow [2023-01-28 02:47:02,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12066, PETRI_PLACES=251, PETRI_TRANSITIONS=493} [2023-01-28 02:47:02,821 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2023-01-28 02:47:02,821 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 493 transitions, 12066 flow [2023-01-28 02:47:02,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:47:02,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:02,822 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:02,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-01-28 02:47:02,822 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:02,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:02,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2058422772, now seen corresponding path program 16 times [2023-01-28 02:47:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:02,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695164302] [2023-01-28 02:47:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:03,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:03,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695164302] [2023-01-28 02:47:03,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695164302] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:03,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:03,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358396546] [2023-01-28 02:47:03,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:03,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:03,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:03,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 493 transitions, 12066 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:03,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:03,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:03,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:05,845 INFO L130 PetriNetUnfolder]: 5876/10506 cut-off events. [2023-01-28 02:47:05,845 INFO L131 PetriNetUnfolder]: For 237561/237561 co-relation queries the response was YES. [2023-01-28 02:47:05,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77040 conditions, 10506 events. 5876/10506 cut-off events. For 237561/237561 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 81010 event pairs, 1653 based on Foata normal form. 6/10408 useless extension candidates. Maximal degree in co-relation 76922. Up to 7326 conditions per place. [2023-01-28 02:47:05,961 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 338 selfloop transitions, 210 changer transitions 6/554 dead transitions. [2023-01-28 02:47:05,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 554 transitions, 13639 flow [2023-01-28 02:47:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-28 02:47:05,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-28 02:47:05,981 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-28 02:47:05,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-28 02:47:05,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:05,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-28 02:47:05,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 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) [2023-01-28 02:47:05,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:05,985 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:05,985 INFO L175 Difference]: Start difference. First operand has 251 places, 493 transitions, 12066 flow. Second operand 7 states and 2004 transitions. [2023-01-28 02:47:05,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 554 transitions, 13639 flow [2023-01-28 02:47:08,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 554 transitions, 13398 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:08,204 INFO L231 Difference]: Finished difference. Result has 254 places, 491 transitions, 12181 flow [2023-01-28 02:47:08,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12181, PETRI_PLACES=254, PETRI_TRANSITIONS=491} [2023-01-28 02:47:08,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2023-01-28 02:47:08,205 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 491 transitions, 12181 flow [2023-01-28 02:47:08,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:08,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:08,206 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:08,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-01-28 02:47:08,206 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:08,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash 473239092, now seen corresponding path program 17 times [2023-01-28 02:47:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:08,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502019579] [2023-01-28 02:47:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:08,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:08,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:08,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502019579] [2023-01-28 02:47:08,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502019579] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:08,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:08,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916998553] [2023-01-28 02:47:08,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:08,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:08,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:08,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:08,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:08,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:08,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 491 transitions, 12181 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:08,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:08,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:08,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:11,084 INFO L130 PetriNetUnfolder]: 5881/10523 cut-off events. [2023-01-28 02:47:11,084 INFO L131 PetriNetUnfolder]: For 239781/239781 co-relation queries the response was YES. [2023-01-28 02:47:11,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77296 conditions, 10523 events. 5881/10523 cut-off events. For 239781/239781 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 81313 event pairs, 1567 based on Foata normal form. 12/10431 useless extension candidates. Maximal degree in co-relation 77177. Up to 7326 conditions per place. [2023-01-28 02:47:11,226 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 341 selfloop transitions, 215 changer transitions 1/557 dead transitions. [2023-01-28 02:47:11,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 557 transitions, 13914 flow [2023-01-28 02:47:11,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:11,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:11,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 02:47:11,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 02:47:11,228 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 02:47:11,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 02:47:11,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:11,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 02:47:11,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 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) [2023-01-28 02:47:11,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:11,232 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:11,232 INFO L175 Difference]: Start difference. First operand has 254 places, 491 transitions, 12181 flow. Second operand 7 states and 2001 transitions. [2023-01-28 02:47:11,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 557 transitions, 13914 flow [2023-01-28 02:47:13,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 557 transitions, 13510 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:13,176 INFO L231 Difference]: Finished difference. Result has 258 places, 496 transitions, 12349 flow [2023-01-28 02:47:13,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11786, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12349, PETRI_PLACES=258, PETRI_TRANSITIONS=496} [2023-01-28 02:47:13,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2023-01-28 02:47:13,177 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 496 transitions, 12349 flow [2023-01-28 02:47:13,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:13,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:13,177 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:13,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-01-28 02:47:13,177 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:13,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:13,177 INFO L85 PathProgramCache]: Analyzing trace with hash 941711906, now seen corresponding path program 18 times [2023-01-28 02:47:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627593791] [2023-01-28 02:47:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627593791] [2023-01-28 02:47:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627593791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:13,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:13,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:13,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899245298] [2023-01-28 02:47:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:13,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:13,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:13,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:13,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:13,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:13,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 496 transitions, 12349 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:13,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:13,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:13,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:15,902 INFO L130 PetriNetUnfolder]: 5872/10494 cut-off events. [2023-01-28 02:47:15,902 INFO L131 PetriNetUnfolder]: For 244350/244350 co-relation queries the response was YES. [2023-01-28 02:47:15,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78039 conditions, 10494 events. 5872/10494 cut-off events. For 244350/244350 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 80902 event pairs, 1559 based on Foata normal form. 4/10394 useless extension candidates. Maximal degree in co-relation 77918. Up to 7326 conditions per place. [2023-01-28 02:47:16,041 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 333 selfloop transitions, 214 changer transitions 0/547 dead transitions. [2023-01-28 02:47:16,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 547 transitions, 13819 flow [2023-01-28 02:47:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:16,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 02:47:16,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 02:47:16,043 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 02:47:16,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 02:47:16,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:16,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 02:47:16,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 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) [2023-01-28 02:47:16,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:16,047 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:16,047 INFO L175 Difference]: Start difference. First operand has 258 places, 496 transitions, 12349 flow. Second operand 7 states and 1995 transitions. [2023-01-28 02:47:16,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 547 transitions, 13819 flow [2023-01-28 02:47:18,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 547 transitions, 13411 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-28 02:47:18,213 INFO L231 Difference]: Finished difference. Result has 259 places, 494 transitions, 12308 flow [2023-01-28 02:47:18,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12308, PETRI_PLACES=259, PETRI_TRANSITIONS=494} [2023-01-28 02:47:18,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 229 predicate places. [2023-01-28 02:47:18,214 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 494 transitions, 12308 flow [2023-01-28 02:47:18,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:18,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:18,215 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:18,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-01-28 02:47:18,215 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:18,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:18,215 INFO L85 PathProgramCache]: Analyzing trace with hash 421525821, now seen corresponding path program 15 times [2023-01-28 02:47:18,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006138295] [2023-01-28 02:47:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:18,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:18,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:18,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:18,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006138295] [2023-01-28 02:47:18,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006138295] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:18,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:18,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:47:18,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013770732] [2023-01-28 02:47:18,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:18,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:47:18,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:47:18,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:47:18,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:47:18,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 494 transitions, 12308 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:47:18,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:18,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:47:18,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:21,386 INFO L130 PetriNetUnfolder]: 6031/10821 cut-off events. [2023-01-28 02:47:21,386 INFO L131 PetriNetUnfolder]: For 243503/243503 co-relation queries the response was YES. [2023-01-28 02:47:21,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78996 conditions, 10821 events. 6031/10821 cut-off events. For 243503/243503 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 84913 event pairs, 799 based on Foata normal form. 4/10677 useless extension candidates. Maximal degree in co-relation 78876. Up to 5424 conditions per place. [2023-01-28 02:47:21,494 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 432 selfloop transitions, 254 changer transitions 1/687 dead transitions. [2023-01-28 02:47:21,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 687 transitions, 16986 flow [2023-01-28 02:47:21,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:47:21,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:47:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2246 transitions. [2023-01-28 02:47:21,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641374837872892 [2023-01-28 02:47:21,496 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2246 transitions. [2023-01-28 02:47:21,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2246 transitions. [2023-01-28 02:47:21,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:21,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2246 transitions. [2023-01-28 02:47:21,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.75) internal successors, (2246), 8 states have internal predecessors, (2246), 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) [2023-01-28 02:47:21,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 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) [2023-01-28 02:47:21,500 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 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) [2023-01-28 02:47:21,500 INFO L175 Difference]: Start difference. First operand has 259 places, 494 transitions, 12308 flow. Second operand 8 states and 2246 transitions. [2023-01-28 02:47:21,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 687 transitions, 16986 flow [2023-01-28 02:47:23,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 687 transitions, 16486 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 02:47:23,220 INFO L231 Difference]: Finished difference. Result has 267 places, 548 transitions, 14028 flow [2023-01-28 02:47:23,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=11880, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14028, PETRI_PLACES=267, PETRI_TRANSITIONS=548} [2023-01-28 02:47:23,221 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2023-01-28 02:47:23,222 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 548 transitions, 14028 flow [2023-01-28 02:47:23,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:47:23,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:23,222 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:23,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-01-28 02:47:23,222 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:23,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash -181201292, now seen corresponding path program 19 times [2023-01-28 02:47:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:23,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16788218] [2023-01-28 02:47:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:23,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:23,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16788218] [2023-01-28 02:47:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16788218] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610411289] [2023-01-28 02:47:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:23,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:23,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:23,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 548 transitions, 14028 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:23,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:23,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:23,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:26,364 INFO L130 PetriNetUnfolder]: 6009/10785 cut-off events. [2023-01-28 02:47:26,365 INFO L131 PetriNetUnfolder]: For 263891/263891 co-relation queries the response was YES. [2023-01-28 02:47:26,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81350 conditions, 10785 events. 6009/10785 cut-off events. For 263891/263891 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 83986 event pairs, 1715 based on Foata normal form. 12/10797 useless extension candidates. Maximal degree in co-relation 81225. Up to 7297 conditions per place. [2023-01-28 02:47:26,490 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 365 selfloop transitions, 246 changer transitions 1/612 dead transitions. [2023-01-28 02:47:26,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 612 transitions, 15848 flow [2023-01-28 02:47:26,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:26,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:47:26,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:47:26,492 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:47:26,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:47:26,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:26,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:47:26,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:47:26,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:26,497 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:26,497 INFO L175 Difference]: Start difference. First operand has 267 places, 548 transitions, 14028 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:47:26,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 612 transitions, 15848 flow [2023-01-28 02:47:28,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 612 transitions, 15778 flow, removed 35 selfloop flow, removed 0 redundant places. [2023-01-28 02:47:28,526 INFO L231 Difference]: Finished difference. Result has 275 places, 550 transitions, 14538 flow [2023-01-28 02:47:28,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=13958, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14538, PETRI_PLACES=275, PETRI_TRANSITIONS=550} [2023-01-28 02:47:28,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-01-28 02:47:28,526 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 550 transitions, 14538 flow [2023-01-28 02:47:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:28,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:28,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:28,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-01-28 02:47:28,527 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:28,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:28,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1218142047, now seen corresponding path program 16 times [2023-01-28 02:47:28,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:28,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456644074] [2023-01-28 02:47:28,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:28,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:28,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:28,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456644074] [2023-01-28 02:47:28,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456644074] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:28,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:28,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:28,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887563408] [2023-01-28 02:47:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:28,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:28,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:28,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:28,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:28,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 550 transitions, 14538 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:28,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:28,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:28,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:31,627 INFO L130 PetriNetUnfolder]: 6029/10775 cut-off events. [2023-01-28 02:47:31,627 INFO L131 PetriNetUnfolder]: For 272514/272514 co-relation queries the response was YES. [2023-01-28 02:47:31,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82405 conditions, 10775 events. 6029/10775 cut-off events. For 272514/272514 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 83443 event pairs, 1579 based on Foata normal form. 26/10801 useless extension candidates. Maximal degree in co-relation 82277. Up to 4114 conditions per place. [2023-01-28 02:47:31,753 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 395 selfloop transitions, 253 changer transitions 0/648 dead transitions. [2023-01-28 02:47:31,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 648 transitions, 17152 flow [2023-01-28 02:47:31,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:31,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-28 02:47:31,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-28 02:47:31,754 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-28 02:47:31,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-28 02:47:31,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:31,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-28 02:47:31,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 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) [2023-01-28 02:47:31,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:31,758 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:31,758 INFO L175 Difference]: Start difference. First operand has 275 places, 550 transitions, 14538 flow. Second operand 7 states and 2012 transitions. [2023-01-28 02:47:31,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 648 transitions, 17152 flow [2023-01-28 02:47:34,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 648 transitions, 16771 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-01-28 02:47:34,071 INFO L231 Difference]: Finished difference. Result has 282 places, 570 transitions, 15285 flow [2023-01-28 02:47:34,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14167, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15285, PETRI_PLACES=282, PETRI_TRANSITIONS=570} [2023-01-28 02:47:34,072 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2023-01-28 02:47:34,072 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 570 transitions, 15285 flow [2023-01-28 02:47:34,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:34,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:34,072 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:34,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-01-28 02:47:34,072 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:34,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash -225720950, now seen corresponding path program 20 times [2023-01-28 02:47:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:34,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72732645] [2023-01-28 02:47:34,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:34,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:34,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72732645] [2023-01-28 02:47:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72732645] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:34,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:34,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:34,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746302635] [2023-01-28 02:47:34,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:34,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:34,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:34,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:34,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 570 transitions, 15285 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:34,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:34,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:34,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:37,164 INFO L130 PetriNetUnfolder]: 6035/10789 cut-off events. [2023-01-28 02:47:37,165 INFO L131 PetriNetUnfolder]: For 282152/282152 co-relation queries the response was YES. [2023-01-28 02:47:37,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83220 conditions, 10789 events. 6035/10789 cut-off events. For 282152/282152 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 83644 event pairs, 1701 based on Foata normal form. 16/10805 useless extension candidates. Maximal degree in co-relation 83089. Up to 7292 conditions per place. [2023-01-28 02:47:37,458 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 378 selfloop transitions, 256 changer transitions 0/634 dead transitions. [2023-01-28 02:47:37,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 634 transitions, 17163 flow [2023-01-28 02:47:37,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:37,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 02:47:37,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 02:47:37,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 02:47:37,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 02:47:37,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:37,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 02:47:37,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 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) [2023-01-28 02:47:37,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:37,464 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:37,464 INFO L175 Difference]: Start difference. First operand has 282 places, 570 transitions, 15285 flow. Second operand 7 states and 2008 transitions. [2023-01-28 02:47:37,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 634 transitions, 17163 flow [2023-01-28 02:47:39,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 634 transitions, 16638 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 02:47:39,588 INFO L231 Difference]: Finished difference. Result has 288 places, 579 transitions, 15575 flow [2023-01-28 02:47:39,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15575, PETRI_PLACES=288, PETRI_TRANSITIONS=579} [2023-01-28 02:47:39,589 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2023-01-28 02:47:39,589 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 579 transitions, 15575 flow [2023-01-28 02:47:39,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:39,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:39,590 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:39,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-01-28 02:47:39,591 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:39,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash 747282927, now seen corresponding path program 17 times [2023-01-28 02:47:39,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:39,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636746940] [2023-01-28 02:47:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:39,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:39,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:39,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:39,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636746940] [2023-01-28 02:47:39,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636746940] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:39,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:39,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:39,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145072773] [2023-01-28 02:47:39,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:39,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:39,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:39,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:39,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:39,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:39,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 579 transitions, 15575 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:39,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:39,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:39,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:43,550 INFO L130 PetriNetUnfolder]: 6037/10771 cut-off events. [2023-01-28 02:47:43,551 INFO L131 PetriNetUnfolder]: For 277139/277139 co-relation queries the response was YES. [2023-01-28 02:47:43,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83956 conditions, 10771 events. 6037/10771 cut-off events. For 277139/277139 co-relation queries the response was YES. Maximal size of possible extension queue 721. Compared 83273 event pairs, 1555 based on Foata normal form. 6/10777 useless extension candidates. Maximal degree in co-relation 83822. Up to 4128 conditions per place. [2023-01-28 02:47:43,683 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 394 selfloop transitions, 260 changer transitions 0/654 dead transitions. [2023-01-28 02:47:43,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 654 transitions, 17630 flow [2023-01-28 02:47:43,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:43,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2012 transitions. [2023-01-28 02:47:43,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37279970353900316 [2023-01-28 02:47:43,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2012 transitions. [2023-01-28 02:47:43,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2012 transitions. [2023-01-28 02:47:43,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:43,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2012 transitions. [2023-01-28 02:47:43,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.42857142857144) internal successors, (2012), 7 states have internal predecessors, (2012), 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) [2023-01-28 02:47:43,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:43,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:43,689 INFO L175 Difference]: Start difference. First operand has 288 places, 579 transitions, 15575 flow. Second operand 7 states and 2012 transitions. [2023-01-28 02:47:43,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 654 transitions, 17630 flow [2023-01-28 02:47:45,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 654 transitions, 17142 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-28 02:47:45,837 INFO L231 Difference]: Finished difference. Result has 291 places, 583 transitions, 15811 flow [2023-01-28 02:47:45,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15049, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15811, PETRI_PLACES=291, PETRI_TRANSITIONS=583} [2023-01-28 02:47:45,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 261 predicate places. [2023-01-28 02:47:45,838 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 583 transitions, 15811 flow [2023-01-28 02:47:45,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:45,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:45,839 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:45,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-01-28 02:47:45,839 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:45,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:45,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1792142250, now seen corresponding path program 21 times [2023-01-28 02:47:45,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:45,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388478818] [2023-01-28 02:47:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:46,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:46,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388478818] [2023-01-28 02:47:46,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388478818] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:46,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:46,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:46,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48106630] [2023-01-28 02:47:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:46,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:46,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:46,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:46,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:46,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:46,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 583 transitions, 15811 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:46,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:46,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:46,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:48,922 INFO L130 PetriNetUnfolder]: 6005/10711 cut-off events. [2023-01-28 02:47:48,922 INFO L131 PetriNetUnfolder]: For 278983/278983 co-relation queries the response was YES. [2023-01-28 02:47:49,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83062 conditions, 10711 events. 6005/10711 cut-off events. For 278983/278983 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 82675 event pairs, 1701 based on Foata normal form. 12/10723 useless extension candidates. Maximal degree in co-relation 82928. Up to 7266 conditions per place. [2023-01-28 02:47:49,053 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 380 selfloop transitions, 256 changer transitions 1/637 dead transitions. [2023-01-28 02:47:49,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 637 transitions, 17425 flow [2023-01-28 02:47:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:47:49,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:47:49,055 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:47:49,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:47:49,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:49,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:47:49,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:47:49,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:49,059 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:49,059 INFO L175 Difference]: Start difference. First operand has 291 places, 583 transitions, 15811 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:47:49,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 637 transitions, 17425 flow [2023-01-28 02:47:51,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 637 transitions, 17131 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-01-28 02:47:51,204 INFO L231 Difference]: Finished difference. Result has 296 places, 581 transitions, 15968 flow [2023-01-28 02:47:51,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15484, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15968, PETRI_PLACES=296, PETRI_TRANSITIONS=581} [2023-01-28 02:47:51,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-01-28 02:47:51,205 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 581 transitions, 15968 flow [2023-01-28 02:47:51,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:51,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:51,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:51,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-01-28 02:47:51,206 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:51,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash 444735361, now seen corresponding path program 18 times [2023-01-28 02:47:51,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:51,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73284520] [2023-01-28 02:47:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:51,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:51,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73284520] [2023-01-28 02:47:51,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73284520] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:51,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:51,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:51,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171796819] [2023-01-28 02:47:51,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:51,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:51,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:51,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:51,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:51,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:47:51,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 581 transitions, 15968 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:51,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:51,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:47:51,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:47:54,148 INFO L130 PetriNetUnfolder]: 5981/10649 cut-off events. [2023-01-28 02:47:54,148 INFO L131 PetriNetUnfolder]: For 277146/277146 co-relation queries the response was YES. [2023-01-28 02:47:54,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82958 conditions, 10649 events. 5981/10649 cut-off events. For 277146/277146 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 81942 event pairs, 1535 based on Foata normal form. 10/10659 useless extension candidates. Maximal degree in co-relation 82823. Up to 4068 conditions per place. [2023-01-28 02:47:54,298 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 391 selfloop transitions, 256 changer transitions 0/647 dead transitions. [2023-01-28 02:47:54,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 647 transitions, 17860 flow [2023-01-28 02:47:54,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:47:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:47:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 02:47:54,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 02:47:54,300 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 02:47:54,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 02:47:54,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:47:54,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 02:47:54,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 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) [2023-01-28 02:47:54,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:54,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:47:54,304 INFO L175 Difference]: Start difference. First operand has 296 places, 581 transitions, 15968 flow. Second operand 7 states and 2008 transitions. [2023-01-28 02:47:54,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 647 transitions, 17860 flow [2023-01-28 02:47:56,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 647 transitions, 17343 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-28 02:47:56,504 INFO L231 Difference]: Finished difference. Result has 296 places, 584 transitions, 16063 flow [2023-01-28 02:47:56,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15367, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=250, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16063, PETRI_PLACES=296, PETRI_TRANSITIONS=584} [2023-01-28 02:47:56,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2023-01-28 02:47:56,505 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 584 transitions, 16063 flow [2023-01-28 02:47:56,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:47:56,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:47:56,505 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:47:56,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-01-28 02:47:56,506 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:47:56,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:47:56,506 INFO L85 PathProgramCache]: Analyzing trace with hash 301631524, now seen corresponding path program 22 times [2023-01-28 02:47:56,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:47:56,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701516919] [2023-01-28 02:47:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:47:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:47:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:47:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:47:56,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:47:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701516919] [2023-01-28 02:47:56,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701516919] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:47:56,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:47:56,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:47:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911597706] [2023-01-28 02:47:56,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:47:56,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:47:56,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:47:56,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:47:56,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:47:56,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:47:56,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 584 transitions, 16063 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:47:56,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:47:56,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:47:56,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:00,089 INFO L130 PetriNetUnfolder]: 6115/10945 cut-off events. [2023-01-28 02:48:00,089 INFO L131 PetriNetUnfolder]: For 283656/283656 co-relation queries the response was YES. [2023-01-28 02:48:00,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84292 conditions, 10945 events. 6115/10945 cut-off events. For 283656/283656 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 85851 event pairs, 885 based on Foata normal form. 8/10953 useless extension candidates. Maximal degree in co-relation 84159. Up to 5029 conditions per place. [2023-01-28 02:48:00,224 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 349 selfloop transitions, 340 changer transitions 0/689 dead transitions. [2023-01-28 02:48:00,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 689 transitions, 18560 flow [2023-01-28 02:48:00,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:48:00,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:48:00,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2527 transitions. [2023-01-28 02:48:00,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36417351203343423 [2023-01-28 02:48:00,226 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2527 transitions. [2023-01-28 02:48:00,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2527 transitions. [2023-01-28 02:48:00,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:00,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2527 transitions. [2023-01-28 02:48:00,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 280.77777777777777) internal successors, (2527), 9 states have internal predecessors, (2527), 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) [2023-01-28 02:48:00,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:48:00,231 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:48:00,231 INFO L175 Difference]: Start difference. First operand has 296 places, 584 transitions, 16063 flow. Second operand 9 states and 2527 transitions. [2023-01-28 02:48:00,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 689 transitions, 18560 flow [2023-01-28 02:48:02,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 689 transitions, 18107 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-01-28 02:48:02,557 INFO L231 Difference]: Finished difference. Result has 299 places, 597 transitions, 16611 flow [2023-01-28 02:48:02,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=15581, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16611, PETRI_PLACES=299, PETRI_TRANSITIONS=597} [2023-01-28 02:48:02,559 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 269 predicate places. [2023-01-28 02:48:02,559 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 597 transitions, 16611 flow [2023-01-28 02:48:02,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:48:02,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:02,559 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:02,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-01-28 02:48:02,559 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:02,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:02,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1860640349, now seen corresponding path program 19 times [2023-01-28 02:48:02,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:02,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265776992] [2023-01-28 02:48:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:02,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:02,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:02,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265776992] [2023-01-28 02:48:02,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265776992] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:02,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:02,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589012871] [2023-01-28 02:48:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:02,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:02,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:48:02,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 597 transitions, 16611 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:02,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:02,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:48:02,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:05,934 INFO L130 PetriNetUnfolder]: 6105/10923 cut-off events. [2023-01-28 02:48:05,934 INFO L131 PetriNetUnfolder]: For 289853/289853 co-relation queries the response was YES. [2023-01-28 02:48:06,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86457 conditions, 10923 events. 6105/10923 cut-off events. For 289853/289853 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 84918 event pairs, 1619 based on Foata normal form. 4/10927 useless extension candidates. Maximal degree in co-relation 86324. Up to 4042 conditions per place. [2023-01-28 02:48:06,109 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 255 changer transitions 4/657 dead transitions. [2023-01-28 02:48:06,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 657 transitions, 18416 flow [2023-01-28 02:48:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:48:06,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:48:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 02:48:06,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 02:48:06,125 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 02:48:06,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 02:48:06,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:06,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 02:48:06,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 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) [2023-01-28 02:48:06,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:06,129 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:06,129 INFO L175 Difference]: Start difference. First operand has 299 places, 597 transitions, 16611 flow. Second operand 7 states and 2003 transitions. [2023-01-28 02:48:06,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 657 transitions, 18416 flow [2023-01-28 02:48:08,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 657 transitions, 17823 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:48:08,526 INFO L231 Difference]: Finished difference. Result has 302 places, 596 transitions, 16516 flow [2023-01-28 02:48:08,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16032, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16516, PETRI_PLACES=302, PETRI_TRANSITIONS=596} [2023-01-28 02:48:08,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-01-28 02:48:08,527 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 596 transitions, 16516 flow [2023-01-28 02:48:08,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:08,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:08,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:08,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-01-28 02:48:08,528 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:08,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash -769401119, now seen corresponding path program 20 times [2023-01-28 02:48:08,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:08,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721434884] [2023-01-28 02:48:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:08,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:08,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:08,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721434884] [2023-01-28 02:48:08,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721434884] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:08,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:08,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:08,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582726189] [2023-01-28 02:48:08,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:08,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:08,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:08,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:08,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:08,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:48:08,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 596 transitions, 16516 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:48:08,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:08,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:48:08,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:11,762 INFO L130 PetriNetUnfolder]: 6132/10986 cut-off events. [2023-01-28 02:48:11,763 INFO L131 PetriNetUnfolder]: For 289119/289119 co-relation queries the response was YES. [2023-01-28 02:48:11,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85937 conditions, 10986 events. 6132/10986 cut-off events. For 289119/289119 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 85949 event pairs, 1341 based on Foata normal form. 4/10990 useless extension candidates. Maximal degree in co-relation 85819. Up to 6043 conditions per place. [2023-01-28 02:48:11,905 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 415 selfloop transitions, 299 changer transitions 1/715 dead transitions. [2023-01-28 02:48:11,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 715 transitions, 19765 flow [2023-01-28 02:48:11,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:48:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:48:11,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1967 transitions. [2023-01-28 02:48:11,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.364461738002594 [2023-01-28 02:48:11,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1967 transitions. [2023-01-28 02:48:11,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1967 transitions. [2023-01-28 02:48:11,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:11,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1967 transitions. [2023-01-28 02:48:11,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.0) internal successors, (1967), 7 states have internal predecessors, (1967), 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) [2023-01-28 02:48:11,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:11,911 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:11,911 INFO L175 Difference]: Start difference. First operand has 302 places, 596 transitions, 16516 flow. Second operand 7 states and 1967 transitions. [2023-01-28 02:48:11,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 715 transitions, 19765 flow [2023-01-28 02:48:14,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 715 transitions, 19338 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 02:48:14,388 INFO L231 Difference]: Finished difference. Result has 307 places, 616 transitions, 17596 flow [2023-01-28 02:48:14,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=16035, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=277, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17596, PETRI_PLACES=307, PETRI_TRANSITIONS=616} [2023-01-28 02:48:14,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2023-01-28 02:48:14,389 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 616 transitions, 17596 flow [2023-01-28 02:48:14,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:48:14,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:14,389 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:14,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-01-28 02:48:14,389 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:14,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1662687720, now seen corresponding path program 23 times [2023-01-28 02:48:14,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:14,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995330376] [2023-01-28 02:48:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:14,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:14,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995330376] [2023-01-28 02:48:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995330376] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:14,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456121946] [2023-01-28 02:48:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:14,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:48:14,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 616 transitions, 17596 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:14,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:14,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:48:14,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:17,716 INFO L130 PetriNetUnfolder]: 6127/10967 cut-off events. [2023-01-28 02:48:17,716 INFO L131 PetriNetUnfolder]: For 316683/316683 co-relation queries the response was YES. [2023-01-28 02:48:17,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87311 conditions, 10967 events. 6127/10967 cut-off events. For 316683/316683 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 85405 event pairs, 1751 based on Foata normal form. 4/10971 useless extension candidates. Maximal degree in co-relation 87190. Up to 7251 conditions per place. [2023-01-28 02:48:17,863 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 398 selfloop transitions, 261 changer transitions 0/659 dead transitions. [2023-01-28 02:48:17,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 659 transitions, 19245 flow [2023-01-28 02:48:17,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:48:17,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:48:17,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 02:48:17,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 02:48:17,865 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 02:48:17,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 02:48:17,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:17,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 02:48:17,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 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) [2023-01-28 02:48:17,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:17,869 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:17,869 INFO L175 Difference]: Start difference. First operand has 307 places, 616 transitions, 17596 flow. Second operand 7 states and 1995 transitions. [2023-01-28 02:48:17,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 659 transitions, 19245 flow [2023-01-28 02:48:20,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 659 transitions, 18919 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-01-28 02:48:20,453 INFO L231 Difference]: Finished difference. Result has 309 places, 617 transitions, 17798 flow [2023-01-28 02:48:20,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17195, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17798, PETRI_PLACES=309, PETRI_TRANSITIONS=617} [2023-01-28 02:48:20,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2023-01-28 02:48:20,454 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 617 transitions, 17798 flow [2023-01-28 02:48:20,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:20,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:20,454 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:20,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-01-28 02:48:20,454 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:20,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1151670496, now seen corresponding path program 24 times [2023-01-28 02:48:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:20,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842205531] [2023-01-28 02:48:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:20,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:20,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:20,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842205531] [2023-01-28 02:48:20,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842205531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:20,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:20,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:20,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100457136] [2023-01-28 02:48:20,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:20,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:20,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:20,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:48:20,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 617 transitions, 17798 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:48:20,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:20,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:48:20,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:24,278 INFO L130 PetriNetUnfolder]: 6277/11245 cut-off events. [2023-01-28 02:48:24,278 INFO L131 PetriNetUnfolder]: For 316533/316533 co-relation queries the response was YES. [2023-01-28 02:48:24,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90213 conditions, 11245 events. 6277/11245 cut-off events. For 316533/316533 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 88652 event pairs, 707 based on Foata normal form. 8/11253 useless extension candidates. Maximal degree in co-relation 90093. Up to 3786 conditions per place. [2023-01-28 02:48:24,410 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 412 selfloop transitions, 361 changer transitions 0/773 dead transitions. [2023-01-28 02:48:24,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 773 transitions, 21756 flow [2023-01-28 02:48:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:48:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:48:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2530 transitions. [2023-01-28 02:48:24,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36460585098717396 [2023-01-28 02:48:24,412 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2530 transitions. [2023-01-28 02:48:24,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2530 transitions. [2023-01-28 02:48:24,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:24,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2530 transitions. [2023-01-28 02:48:24,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 281.1111111111111) internal successors, (2530), 9 states have internal predecessors, (2530), 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) [2023-01-28 02:48:24,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:48:24,417 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:48:24,417 INFO L175 Difference]: Start difference. First operand has 309 places, 617 transitions, 17798 flow. Second operand 9 states and 2530 transitions. [2023-01-28 02:48:24,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 773 transitions, 21756 flow [2023-01-28 02:48:26,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 773 transitions, 21047 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-01-28 02:48:26,765 INFO L231 Difference]: Finished difference. Result has 316 places, 644 transitions, 19098 flow [2023-01-28 02:48:26,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=17139, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19098, PETRI_PLACES=316, PETRI_TRANSITIONS=644} [2023-01-28 02:48:26,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2023-01-28 02:48:26,767 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 644 transitions, 19098 flow [2023-01-28 02:48:26,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:48:26,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:26,767 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:26,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-01-28 02:48:26,767 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:26,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1672906338, now seen corresponding path program 25 times [2023-01-28 02:48:26,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:26,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673292215] [2023-01-28 02:48:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:26,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:27,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:27,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673292215] [2023-01-28 02:48:27,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673292215] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:27,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:27,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215194927] [2023-01-28 02:48:27,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:27,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:27,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:27,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:27,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:48:27,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 644 transitions, 19098 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:27,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:27,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:48:27,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:30,799 INFO L130 PetriNetUnfolder]: 6689/12023 cut-off events. [2023-01-28 02:48:30,799 INFO L131 PetriNetUnfolder]: For 360624/360624 co-relation queries the response was YES. [2023-01-28 02:48:30,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99466 conditions, 12023 events. 6689/12023 cut-off events. For 360624/360624 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 95742 event pairs, 1381 based on Foata normal form. 8/12031 useless extension candidates. Maximal degree in co-relation 99341. Up to 3366 conditions per place. [2023-01-28 02:48:31,012 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 282 changer transitions 0/789 dead transitions. [2023-01-28 02:48:31,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 789 transitions, 23280 flow [2023-01-28 02:48:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:48:31,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:48:31,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:48:31,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:48:31,014 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:48:31,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:48:31,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:31,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:48:31,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:48:31,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:31,019 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:31,019 INFO L175 Difference]: Start difference. First operand has 316 places, 644 transitions, 19098 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:48:31,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 789 transitions, 23280 flow [2023-01-28 02:48:34,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 789 transitions, 22724 flow, removed 37 selfloop flow, removed 5 redundant places. [2023-01-28 02:48:34,446 INFO L231 Difference]: Finished difference. Result has 320 places, 660 transitions, 19806 flow [2023-01-28 02:48:34,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=18578, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=266, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19806, PETRI_PLACES=320, PETRI_TRANSITIONS=660} [2023-01-28 02:48:34,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2023-01-28 02:48:34,447 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 660 transitions, 19806 flow [2023-01-28 02:48:34,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:34,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:34,447 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:34,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-01-28 02:48:34,447 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:34,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash -547474396, now seen corresponding path program 26 times [2023-01-28 02:48:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:34,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807689116] [2023-01-28 02:48:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:34,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:34,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:34,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807689116] [2023-01-28 02:48:34,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807689116] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:34,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:34,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:34,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960159214] [2023-01-28 02:48:34,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:34,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:34,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:48:34,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 660 transitions, 19806 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:34,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:34,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:48:34,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:38,394 INFO L130 PetriNetUnfolder]: 6650/11934 cut-off events. [2023-01-28 02:48:38,394 INFO L131 PetriNetUnfolder]: For 368474/368474 co-relation queries the response was YES. [2023-01-28 02:48:38,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98759 conditions, 11934 events. 6650/11934 cut-off events. For 368474/368474 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94669 event pairs, 1577 based on Foata normal form. 10/11944 useless extension candidates. Maximal degree in co-relation 98633. Up to 3857 conditions per place. [2023-01-28 02:48:38,560 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 434 selfloop transitions, 339 changer transitions 0/773 dead transitions. [2023-01-28 02:48:38,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 773 transitions, 23156 flow [2023-01-28 02:48:38,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:48:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:48:38,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2009 transitions. [2023-01-28 02:48:38,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3722438391699092 [2023-01-28 02:48:38,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2009 transitions. [2023-01-28 02:48:38,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2009 transitions. [2023-01-28 02:48:38,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:38,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2009 transitions. [2023-01-28 02:48:38,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 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) [2023-01-28 02:48:38,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:38,565 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:38,565 INFO L175 Difference]: Start difference. First operand has 320 places, 660 transitions, 19806 flow. Second operand 7 states and 2009 transitions. [2023-01-28 02:48:38,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 773 transitions, 23156 flow [2023-01-28 02:48:42,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 773 transitions, 22785 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 02:48:42,308 INFO L231 Difference]: Finished difference. Result has 326 places, 673 transitions, 20783 flow [2023-01-28 02:48:42,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=19457, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20783, PETRI_PLACES=326, PETRI_TRANSITIONS=673} [2023-01-28 02:48:42,309 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2023-01-28 02:48:42,309 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 673 transitions, 20783 flow [2023-01-28 02:48:42,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:42,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:42,309 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:42,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-01-28 02:48:42,310 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:42,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:42,310 INFO L85 PathProgramCache]: Analyzing trace with hash -238784307, now seen corresponding path program 21 times [2023-01-28 02:48:42,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:42,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121304093] [2023-01-28 02:48:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:42,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:42,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:42,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121304093] [2023-01-28 02:48:42,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121304093] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:42,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:42,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:42,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877767366] [2023-01-28 02:48:42,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:42,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:42,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:42,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:42,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:42,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:48:42,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 673 transitions, 20783 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:42,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:42,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:48:42,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:46,297 INFO L130 PetriNetUnfolder]: 6659/11951 cut-off events. [2023-01-28 02:48:46,297 INFO L131 PetriNetUnfolder]: For 379255/379255 co-relation queries the response was YES. [2023-01-28 02:48:46,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98937 conditions, 11951 events. 6659/11951 cut-off events. For 379255/379255 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 94744 event pairs, 1895 based on Foata normal form. 8/11959 useless extension candidates. Maximal degree in co-relation 98809. Up to 7602 conditions per place. [2023-01-28 02:48:46,431 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 436 selfloop transitions, 319 changer transitions 0/755 dead transitions. [2023-01-28 02:48:46,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 755 transitions, 23338 flow [2023-01-28 02:48:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:48:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:48:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-28 02:48:46,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-28 02:48:46,433 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-28 02:48:46,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-28 02:48:46,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:46,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-28 02:48:46,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 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) [2023-01-28 02:48:46,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:46,437 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:48:46,437 INFO L175 Difference]: Start difference. First operand has 326 places, 673 transitions, 20783 flow. Second operand 7 states and 2010 transitions. [2023-01-28 02:48:46,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 755 transitions, 23338 flow [2023-01-28 02:48:49,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 755 transitions, 22874 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 02:48:49,707 INFO L231 Difference]: Finished difference. Result has 333 places, 684 transitions, 21530 flow [2023-01-28 02:48:49,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20325, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21530, PETRI_PLACES=333, PETRI_TRANSITIONS=684} [2023-01-28 02:48:49,708 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2023-01-28 02:48:49,708 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 684 transitions, 21530 flow [2023-01-28 02:48:49,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:49,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:49,709 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:49,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-01-28 02:48:49,709 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:49,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash -68082012, now seen corresponding path program 27 times [2023-01-28 02:48:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:49,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629072217] [2023-01-28 02:48:49,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:49,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:49,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:49,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629072217] [2023-01-28 02:48:49,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629072217] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:49,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:49,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:48:49,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578773021] [2023-01-28 02:48:49,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:49,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:48:49,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:49,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:48:49,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:48:49,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:48:49,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 684 transitions, 21530 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:48:49,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:49,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:48:49,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:48:53,992 INFO L130 PetriNetUnfolder]: 6677/11991 cut-off events. [2023-01-28 02:48:53,992 INFO L131 PetriNetUnfolder]: For 382643/382643 co-relation queries the response was YES. [2023-01-28 02:48:54,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100572 conditions, 11991 events. 6677/11991 cut-off events. For 382643/382643 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95530 event pairs, 783 based on Foata normal form. 4/11995 useless extension candidates. Maximal degree in co-relation 100440. Up to 4835 conditions per place. [2023-01-28 02:48:54,230 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 483 selfloop transitions, 321 changer transitions 0/804 dead transitions. [2023-01-28 02:48:54,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 804 transitions, 24786 flow [2023-01-28 02:48:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:48:54,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:48:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2244 transitions. [2023-01-28 02:48:54,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3638132295719844 [2023-01-28 02:48:54,232 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2244 transitions. [2023-01-28 02:48:54,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2244 transitions. [2023-01-28 02:48:54,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:48:54,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2244 transitions. [2023-01-28 02:48:54,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.5) internal successors, (2244), 8 states have internal predecessors, (2244), 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) [2023-01-28 02:48:54,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 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) [2023-01-28 02:48:54,236 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 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) [2023-01-28 02:48:54,236 INFO L175 Difference]: Start difference. First operand has 333 places, 684 transitions, 21530 flow. Second operand 8 states and 2244 transitions. [2023-01-28 02:48:54,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 804 transitions, 24786 flow [2023-01-28 02:48:57,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 804 transitions, 24250 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-01-28 02:48:57,424 INFO L231 Difference]: Finished difference. Result has 337 places, 702 transitions, 22312 flow [2023-01-28 02:48:57,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=20942, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=22312, PETRI_PLACES=337, PETRI_TRANSITIONS=702} [2023-01-28 02:48:57,425 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2023-01-28 02:48:57,425 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 702 transitions, 22312 flow [2023-01-28 02:48:57,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:48:57,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:48:57,425 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:48:57,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-01-28 02:48:57,426 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:48:57,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:48:57,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2017718955, now seen corresponding path program 22 times [2023-01-28 02:48:57,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:48:57,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139981417] [2023-01-28 02:48:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:48:57,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:48:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:48:57,656 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:48:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:48:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139981417] [2023-01-28 02:48:57,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139981417] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:48:57,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:48:57,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:48:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426347210] [2023-01-28 02:48:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:48:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:48:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:48:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:48:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:48:57,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:48:57,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 702 transitions, 22312 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:48:57,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:48:57,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:48:57,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:01,829 INFO L130 PetriNetUnfolder]: 6673/11987 cut-off events. [2023-01-28 02:49:01,829 INFO L131 PetriNetUnfolder]: For 412287/412287 co-relation queries the response was YES. [2023-01-28 02:49:01,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102985 conditions, 11987 events. 6673/11987 cut-off events. For 412287/412287 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95177 event pairs, 1849 based on Foata normal form. 4/11991 useless extension candidates. Maximal degree in co-relation 102854. Up to 7634 conditions per place. [2023-01-28 02:49:01,985 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 443 selfloop transitions, 332 changer transitions 5/780 dead transitions. [2023-01-28 02:49:01,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 780 transitions, 24659 flow [2023-01-28 02:49:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:49:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:49:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 02:49:01,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 02:49:01,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 02:49:01,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 02:49:01,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:01,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 02:49:01,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 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) [2023-01-28 02:49:01,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:01,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:01,993 INFO L175 Difference]: Start difference. First operand has 337 places, 702 transitions, 22312 flow. Second operand 7 states and 2001 transitions. [2023-01-28 02:49:01,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 780 transitions, 24659 flow [2023-01-28 02:49:05,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 780 transitions, 24333 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 02:49:05,317 INFO L231 Difference]: Finished difference. Result has 340 places, 699 transitions, 22509 flow [2023-01-28 02:49:05,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21939, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=332, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22509, PETRI_PLACES=340, PETRI_TRANSITIONS=699} [2023-01-28 02:49:05,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2023-01-28 02:49:05,318 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 699 transitions, 22509 flow [2023-01-28 02:49:05,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:05,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:05,319 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:05,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-01-28 02:49:05,319 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:05,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1813531806, now seen corresponding path program 28 times [2023-01-28 02:49:05,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:05,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569163404] [2023-01-28 02:49:05,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:05,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:05,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:05,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569163404] [2023-01-28 02:49:05,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569163404] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:05,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:05,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:49:05,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037592936] [2023-01-28 02:49:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:05,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:49:05,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:49:05,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:49:05,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:49:05,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 699 transitions, 22509 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:05,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:05,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:49:05,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:09,726 INFO L130 PetriNetUnfolder]: 6651/11943 cut-off events. [2023-01-28 02:49:09,726 INFO L131 PetriNetUnfolder]: For 414860/414860 co-relation queries the response was YES. [2023-01-28 02:49:09,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102976 conditions, 11943 events. 6651/11943 cut-off events. For 414860/414860 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 94447 event pairs, 1765 based on Foata normal form. 6/11949 useless extension candidates. Maximal degree in co-relation 102845. Up to 3870 conditions per place. [2023-01-28 02:49:09,872 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 507 selfloop transitions, 273 changer transitions 6/786 dead transitions. [2023-01-28 02:49:09,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 786 transitions, 25087 flow [2023-01-28 02:49:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:49:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:49:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 02:49:09,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 02:49:09,874 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 02:49:09,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 02:49:09,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:09,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 02:49:09,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 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) [2023-01-28 02:49:09,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:09,878 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:09,878 INFO L175 Difference]: Start difference. First operand has 340 places, 699 transitions, 22509 flow. Second operand 7 states and 2000 transitions. [2023-01-28 02:49:09,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 786 transitions, 25087 flow [2023-01-28 02:49:13,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 786 transitions, 24586 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-01-28 02:49:13,155 INFO L231 Difference]: Finished difference. Result has 342 places, 696 transitions, 22475 flow [2023-01-28 02:49:13,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21957, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=273, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22475, PETRI_PLACES=342, PETRI_TRANSITIONS=696} [2023-01-28 02:49:13,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2023-01-28 02:49:13,156 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 696 transitions, 22475 flow [2023-01-28 02:49:13,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:13,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:13,156 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:13,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-01-28 02:49:13,156 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:13,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash -708909313, now seen corresponding path program 23 times [2023-01-28 02:49:13,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:13,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912462017] [2023-01-28 02:49:13,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:13,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:13,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:13,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912462017] [2023-01-28 02:49:13,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912462017] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:13,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:13,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:49:13,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118032021] [2023-01-28 02:49:13,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:13,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:49:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:49:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:49:13,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:49:13,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 696 transitions, 22475 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:13,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:13,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:49:13,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:17,606 INFO L130 PetriNetUnfolder]: 6655/11965 cut-off events. [2023-01-28 02:49:17,606 INFO L131 PetriNetUnfolder]: For 411926/411926 co-relation queries the response was YES. [2023-01-28 02:49:17,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102435 conditions, 11965 events. 6655/11965 cut-off events. For 411926/411926 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 95036 event pairs, 1855 based on Foata normal form. 8/11973 useless extension candidates. Maximal degree in co-relation 102305. Up to 7604 conditions per place. [2023-01-28 02:49:17,762 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 438 selfloop transitions, 330 changer transitions 1/769 dead transitions. [2023-01-28 02:49:17,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 769 transitions, 24802 flow [2023-01-28 02:49:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:49:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:49:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 02:49:17,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 02:49:17,764 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 02:49:17,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 02:49:17,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:17,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 02:49:17,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 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) [2023-01-28 02:49:17,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:17,767 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:17,767 INFO L175 Difference]: Start difference. First operand has 342 places, 696 transitions, 22475 flow. Second operand 7 states and 1999 transitions. [2023-01-28 02:49:17,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 769 transitions, 24802 flow [2023-01-28 02:49:20,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 769 transitions, 24320 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-28 02:49:20,786 INFO L231 Difference]: Finished difference. Result has 346 places, 698 transitions, 22713 flow [2023-01-28 02:49:20,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=21953, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22713, PETRI_PLACES=346, PETRI_TRANSITIONS=698} [2023-01-28 02:49:20,786 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2023-01-28 02:49:20,786 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 698 transitions, 22713 flow [2023-01-28 02:49:20,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:20,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:20,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-01-28 02:49:20,788 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:20,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1494227853, now seen corresponding path program 24 times [2023-01-28 02:49:20,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:20,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339663232] [2023-01-28 02:49:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:21,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:21,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339663232] [2023-01-28 02:49:21,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339663232] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:21,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:21,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:49:21,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57607133] [2023-01-28 02:49:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:21,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:49:21,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:21,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:49:21,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:49:21,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:49:21,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 698 transitions, 22713 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:21,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:21,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:49:21,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:25,124 INFO L130 PetriNetUnfolder]: 6649/11935 cut-off events. [2023-01-28 02:49:25,125 INFO L131 PetriNetUnfolder]: For 417781/417781 co-relation queries the response was YES. [2023-01-28 02:49:25,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102947 conditions, 11935 events. 6649/11935 cut-off events. For 417781/417781 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 94577 event pairs, 1839 based on Foata normal form. 4/11939 useless extension candidates. Maximal degree in co-relation 102815. Up to 7604 conditions per place. [2023-01-28 02:49:25,272 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 430 selfloop transitions, 330 changer transitions 0/760 dead transitions. [2023-01-28 02:49:25,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 760 transitions, 24882 flow [2023-01-28 02:49:25,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:49:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:49:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1993 transitions. [2023-01-28 02:49:25,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692792292014082 [2023-01-28 02:49:25,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1993 transitions. [2023-01-28 02:49:25,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1993 transitions. [2023-01-28 02:49:25,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:25,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1993 transitions. [2023-01-28 02:49:25,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.7142857142857) internal successors, (1993), 7 states have internal predecessors, (1993), 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) [2023-01-28 02:49:25,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:25,277 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:25,277 INFO L175 Difference]: Start difference. First operand has 346 places, 698 transitions, 22713 flow. Second operand 7 states and 1993 transitions. [2023-01-28 02:49:25,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 760 transitions, 24882 flow [2023-01-28 02:49:28,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 760 transitions, 24271 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-01-28 02:49:28,408 INFO L231 Difference]: Finished difference. Result has 347 places, 697 transitions, 22730 flow [2023-01-28 02:49:28,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22070, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22730, PETRI_PLACES=347, PETRI_TRANSITIONS=697} [2023-01-28 02:49:28,409 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2023-01-28 02:49:28,409 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 697 transitions, 22730 flow [2023-01-28 02:49:28,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:28,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:28,409 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:28,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-01-28 02:49:28,409 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:28,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash -790790675, now seen corresponding path program 25 times [2023-01-28 02:49:28,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:28,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780658118] [2023-01-28 02:49:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:28,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:28,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:28,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780658118] [2023-01-28 02:49:28,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780658118] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:28,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:28,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:49:28,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149621058] [2023-01-28 02:49:28,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:28,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:49:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:28,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:49:28,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:49:28,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:49:28,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 697 transitions, 22730 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:28,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:28,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:49:28,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:32,729 INFO L130 PetriNetUnfolder]: 6629/11891 cut-off events. [2023-01-28 02:49:32,729 INFO L131 PetriNetUnfolder]: For 417919/417919 co-relation queries the response was YES. [2023-01-28 02:49:32,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102778 conditions, 11891 events. 6629/11891 cut-off events. For 417919/417919 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 94062 event pairs, 1927 based on Foata normal form. 8/11899 useless extension candidates. Maximal degree in co-relation 102647. Up to 7604 conditions per place. [2023-01-28 02:49:32,881 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 441 selfloop transitions, 330 changer transitions 1/772 dead transitions. [2023-01-28 02:49:32,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 772 transitions, 24973 flow [2023-01-28 02:49:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:49:32,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:49:32,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 02:49:32,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 02:49:32,883 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 02:49:32,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 02:49:32,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:32,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 02:49:32,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 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) [2023-01-28 02:49:32,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:32,886 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:49:32,886 INFO L175 Difference]: Start difference. First operand has 347 places, 697 transitions, 22730 flow. Second operand 7 states and 2005 transitions. [2023-01-28 02:49:32,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 772 transitions, 24973 flow [2023-01-28 02:49:36,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 772 transitions, 24309 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 02:49:36,058 INFO L231 Difference]: Finished difference. Result has 350 places, 697 transitions, 22712 flow [2023-01-28 02:49:36,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22023, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22712, PETRI_PLACES=350, PETRI_TRANSITIONS=697} [2023-01-28 02:49:36,073 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2023-01-28 02:49:36,073 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 697 transitions, 22712 flow [2023-01-28 02:49:36,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:49:36,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:36,074 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-01-28 02:49:36,074 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:36,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2052057265, now seen corresponding path program 26 times [2023-01-28 02:49:36,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:36,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300951534] [2023-01-28 02:49:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:36,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300951534] [2023-01-28 02:49:36,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300951534] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:49:36,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:49:36,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:49:36,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604486407] [2023-01-28 02:49:36,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:36,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:49:36,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:49:36,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:49:36,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:49:36,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 697 transitions, 22712 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:49:36,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:36,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:49:36,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:40,911 INFO L130 PetriNetUnfolder]: 7334/13402 cut-off events. [2023-01-28 02:49:40,911 INFO L131 PetriNetUnfolder]: For 442791/442791 co-relation queries the response was YES. [2023-01-28 02:49:41,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112278 conditions, 13402 events. 7334/13402 cut-off events. For 442791/442791 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 111626 event pairs, 1079 based on Foata normal form. 10/13412 useless extension candidates. Maximal degree in co-relation 112145. Up to 5787 conditions per place. [2023-01-28 02:49:41,066 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 427 selfloop transitions, 473 changer transitions 1/901 dead transitions. [2023-01-28 02:49:41,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 901 transitions, 28292 flow [2023-01-28 02:49:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:49:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:49:41,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2800 transitions. [2023-01-28 02:49:41,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631647211413748 [2023-01-28 02:49:41,068 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2800 transitions. [2023-01-28 02:49:41,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2800 transitions. [2023-01-28 02:49:41,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:41,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2800 transitions. [2023-01-28 02:49:41,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 280.0) internal successors, (2800), 10 states have internal predecessors, (2800), 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) [2023-01-28 02:49:41,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 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) [2023-01-28 02:49:41,077 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 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) [2023-01-28 02:49:41,077 INFO L175 Difference]: Start difference. First operand has 350 places, 697 transitions, 22712 flow. Second operand 10 states and 2800 transitions. [2023-01-28 02:49:41,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 901 transitions, 28292 flow [2023-01-28 02:49:44,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 901 transitions, 27577 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 02:49:44,797 INFO L231 Difference]: Finished difference. Result has 356 places, 771 transitions, 25341 flow [2023-01-28 02:49:44,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=22065, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=25341, PETRI_PLACES=356, PETRI_TRANSITIONS=771} [2023-01-28 02:49:44,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2023-01-28 02:49:44,807 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 771 transitions, 25341 flow [2023-01-28 02:49:44,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:49:44,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:44,807 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:44,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-01-28 02:49:44,808 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:44,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:44,808 INFO L85 PathProgramCache]: Analyzing trace with hash -630506158, now seen corresponding path program 29 times [2023-01-28 02:49:44,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:44,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227813089] [2023-01-28 02:49:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:44,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:45,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:45,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227813089] [2023-01-28 02:49:45,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227813089] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:49:45,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800616857] [2023-01-28 02:49:45,093 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:49:45,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:49:45,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:49:45,095 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:49:45,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:49:45,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 02:49:45,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:49:45,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 02:49:45,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:49:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:45,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:49:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:45,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800616857] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:49:45,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:49:45,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 18 [2023-01-28 02:49:45,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539254083] [2023-01-28 02:49:45,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:49:45,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:49:45,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:45,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:49:45,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-01-28 02:49:45,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 771 [2023-01-28 02:49:45,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 771 transitions, 25341 flow. Second operand has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 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) [2023-01-28 02:49:45,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:45,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 771 [2023-01-28 02:49:45,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:49:50,583 INFO L130 PetriNetUnfolder]: 7376/13474 cut-off events. [2023-01-28 02:49:50,583 INFO L131 PetriNetUnfolder]: For 475315/475315 co-relation queries the response was YES. [2023-01-28 02:49:50,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117623 conditions, 13474 events. 7376/13474 cut-off events. For 475315/475315 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 111222 event pairs, 2077 based on Foata normal form. 6/13480 useless extension candidates. Maximal degree in co-relation 117489. Up to 5815 conditions per place. [2023-01-28 02:49:50,740 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 516 selfloop transitions, 334 changer transitions 14/864 dead transitions. [2023-01-28 02:49:50,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 864 transitions, 28302 flow [2023-01-28 02:49:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 02:49:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 02:49:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2251 transitions. [2023-01-28 02:49:50,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3649481193255512 [2023-01-28 02:49:50,742 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2251 transitions. [2023-01-28 02:49:50,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2251 transitions. [2023-01-28 02:49:50,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:49:50,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2251 transitions. [2023-01-28 02:49:50,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.375) internal successors, (2251), 8 states have internal predecessors, (2251), 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) [2023-01-28 02:49:50,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 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) [2023-01-28 02:49:50,746 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 771.0) internal successors, (6939), 9 states have internal predecessors, (6939), 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) [2023-01-28 02:49:50,746 INFO L175 Difference]: Start difference. First operand has 356 places, 771 transitions, 25341 flow. Second operand 8 states and 2251 transitions. [2023-01-28 02:49:50,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 864 transitions, 28302 flow [2023-01-28 02:49:55,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 864 transitions, 27636 flow, removed 70 selfloop flow, removed 3 redundant places. [2023-01-28 02:49:55,396 INFO L231 Difference]: Finished difference. Result has 363 places, 776 transitions, 25619 flow [2023-01-28 02:49:55,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=24681, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=25619, PETRI_PLACES=363, PETRI_TRANSITIONS=776} [2023-01-28 02:49:55,397 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2023-01-28 02:49:55,397 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 776 transitions, 25619 flow [2023-01-28 02:49:55,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 271.75) internal successors, (2174), 8 states have internal predecessors, (2174), 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) [2023-01-28 02:49:55,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:49:55,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:49:55,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:49:55,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:49:55,602 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:49:55,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:49:55,603 INFO L85 PathProgramCache]: Analyzing trace with hash 246931528, now seen corresponding path program 30 times [2023-01-28 02:49:55,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:49:55,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024477320] [2023-01-28 02:49:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:49:55,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:49:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:49:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:55,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:49:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024477320] [2023-01-28 02:49:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024477320] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:49:55,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781168705] [2023-01-28 02:49:55,861 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 02:49:55,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:49:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:49:55,862 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:49:55,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:49:56,050 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 02:49:56,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:49:56,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 02:49:56,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:49:56,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:56,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:49:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:49:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781168705] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:49:56,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 02:49:56,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-01-28 02:49:56,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743462992] [2023-01-28 02:49:56,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 02:49:56,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-28 02:49:56,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:49:56,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-28 02:49:56,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-01-28 02:49:56,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:49:56,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 776 transitions, 25619 flow. Second operand has 17 states, 17 states have (on average 276.3529411764706) internal successors, (4698), 17 states have internal predecessors, (4698), 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) [2023-01-28 02:49:56,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:49:56,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:49:56,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:01,401 INFO L130 PetriNetUnfolder]: 7225/13181 cut-off events. [2023-01-28 02:50:01,402 INFO L131 PetriNetUnfolder]: For 460323/460323 co-relation queries the response was YES. [2023-01-28 02:50:01,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114472 conditions, 13181 events. 7225/13181 cut-off events. For 460323/460323 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 108291 event pairs, 1877 based on Foata normal form. 20/13201 useless extension candidates. Maximal degree in co-relation 114335. Up to 4389 conditions per place. [2023-01-28 02:50:01,567 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 450 selfloop transitions, 396 changer transitions 0/846 dead transitions. [2023-01-28 02:50:01,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 846 transitions, 28058 flow [2023-01-28 02:50:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:50:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:50:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 02:50:01,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 02:50:01,569 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 02:50:01,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 02:50:01,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:01,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 02:50:01,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 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) [2023-01-28 02:50:01,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:01,572 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:01,572 INFO L175 Difference]: Start difference. First operand has 363 places, 776 transitions, 25619 flow. Second operand 7 states and 2005 transitions. [2023-01-28 02:50:01,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 846 transitions, 28058 flow [2023-01-28 02:50:05,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 846 transitions, 27672 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-01-28 02:50:05,905 INFO L231 Difference]: Finished difference. Result has 366 places, 773 transitions, 25989 flow [2023-01-28 02:50:05,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25074, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=394, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25989, PETRI_PLACES=366, PETRI_TRANSITIONS=773} [2023-01-28 02:50:05,906 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2023-01-28 02:50:05,906 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 773 transitions, 25989 flow [2023-01-28 02:50:05,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 276.3529411764706) internal successors, (4698), 17 states have internal predecessors, (4698), 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) [2023-01-28 02:50:05,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:05,907 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:50:05,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:50:06,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:50:06,112 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:50:06,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2146257214, now seen corresponding path program 31 times [2023-01-28 02:50:06,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:06,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061043936] [2023-01-28 02:50:06,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:06,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:06,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061043936] [2023-01-28 02:50:06,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061043936] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:06,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:06,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:50:06,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555535259] [2023-01-28 02:50:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:06,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:50:06,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:50:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:50:06,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:50:06,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 773 transitions, 25989 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:06,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:06,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:50:06,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:10,847 INFO L130 PetriNetUnfolder]: 7209/13151 cut-off events. [2023-01-28 02:50:10,847 INFO L131 PetriNetUnfolder]: For 470322/470322 co-relation queries the response was YES. [2023-01-28 02:50:11,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114854 conditions, 13151 events. 7209/13151 cut-off events. For 470322/470322 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 107856 event pairs, 2065 based on Foata normal form. 6/13157 useless extension candidates. Maximal degree in co-relation 114717. Up to 5815 conditions per place. [2023-01-28 02:50:11,126 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 504 selfloop transitions, 329 changer transitions 6/839 dead transitions. [2023-01-28 02:50:11,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 839 transitions, 28358 flow [2023-01-28 02:50:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:50:11,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:50:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 02:50:11,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 02:50:11,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 02:50:11,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 02:50:11,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:11,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 02:50:11,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 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) [2023-01-28 02:50:11,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:11,131 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:11,131 INFO L175 Difference]: Start difference. First operand has 366 places, 773 transitions, 25989 flow. Second operand 7 states and 2001 transitions. [2023-01-28 02:50:11,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 839 transitions, 28358 flow [2023-01-28 02:50:15,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 839 transitions, 27623 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-01-28 02:50:15,156 INFO L231 Difference]: Finished difference. Result has 369 places, 772 transitions, 25876 flow [2023-01-28 02:50:15,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25254, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25876, PETRI_PLACES=369, PETRI_TRANSITIONS=772} [2023-01-28 02:50:15,156 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2023-01-28 02:50:15,157 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 772 transitions, 25876 flow [2023-01-28 02:50:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:15,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:15,157 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:50:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-01-28 02:50:15,157 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:50:15,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:15,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1309243911, now seen corresponding path program 27 times [2023-01-28 02:50:15,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252515557] [2023-01-28 02:50:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:15,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:15,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:15,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252515557] [2023-01-28 02:50:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252515557] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:15,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:15,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:50:15,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553909669] [2023-01-28 02:50:15,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:15,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:50:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:15,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:50:15,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:50:15,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:50:15,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 772 transitions, 25876 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:50:15,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:15,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:50:15,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:19,823 INFO L130 PetriNetUnfolder]: 7193/13097 cut-off events. [2023-01-28 02:50:19,823 INFO L131 PetriNetUnfolder]: For 466219/466219 co-relation queries the response was YES. [2023-01-28 02:50:19,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114176 conditions, 13097 events. 7193/13097 cut-off events. For 466219/466219 co-relation queries the response was YES. Maximal size of possible extension queue 877. Compared 107250 event pairs, 2179 based on Foata normal form. 4/13101 useless extension candidates. Maximal degree in co-relation 114038. Up to 8557 conditions per place. [2023-01-28 02:50:19,996 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 464 selfloop transitions, 365 changer transitions 0/829 dead transitions. [2023-01-28 02:50:19,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 829 transitions, 27907 flow [2023-01-28 02:50:19,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:50:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:50:19,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 02:50:19,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 02:50:19,998 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 02:50:19,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 02:50:19,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:19,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 02:50:19,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 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) [2023-01-28 02:50:20,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:20,002 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:20,002 INFO L175 Difference]: Start difference. First operand has 369 places, 772 transitions, 25876 flow. Second operand 7 states and 2008 transitions. [2023-01-28 02:50:20,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 829 transitions, 27907 flow [2023-01-28 02:50:24,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 829 transitions, 27322 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-01-28 02:50:24,026 INFO L231 Difference]: Finished difference. Result has 367 places, 772 transitions, 25996 flow [2023-01-28 02:50:24,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25219, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=25996, PETRI_PLACES=367, PETRI_TRANSITIONS=772} [2023-01-28 02:50:24,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2023-01-28 02:50:24,027 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 772 transitions, 25996 flow [2023-01-28 02:50:24,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:50:24,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:24,028 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:50:24,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-01-28 02:50:24,028 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:50:24,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash 772055314, now seen corresponding path program 32 times [2023-01-28 02:50:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:24,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769630125] [2023-01-28 02:50:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:24,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:24,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:24,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769630125] [2023-01-28 02:50:24,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769630125] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:24,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:24,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:50:24,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532148060] [2023-01-28 02:50:24,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:24,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:50:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:24,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:50:24,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:50:24,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:50:24,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 772 transitions, 25996 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:24,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:24,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:50:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:29,282 INFO L130 PetriNetUnfolder]: 7161/13037 cut-off events. [2023-01-28 02:50:29,282 INFO L131 PetriNetUnfolder]: For 472379/472379 co-relation queries the response was YES. [2023-01-28 02:50:29,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114256 conditions, 13037 events. 7161/13037 cut-off events. For 472379/472379 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 106485 event pairs, 2051 based on Foata normal form. 12/13049 useless extension candidates. Maximal degree in co-relation 114122. Up to 5768 conditions per place. [2023-01-28 02:50:29,488 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 505 selfloop transitions, 329 changer transitions 1/835 dead transitions. [2023-01-28 02:50:29,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 835 transitions, 28321 flow [2023-01-28 02:50:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:50:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:50:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 02:50:29,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 02:50:29,490 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 02:50:29,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 02:50:29,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:29,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 02:50:29,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 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) [2023-01-28 02:50:29,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:29,495 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:29,495 INFO L175 Difference]: Start difference. First operand has 367 places, 772 transitions, 25996 flow. Second operand 7 states and 2000 transitions. [2023-01-28 02:50:29,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 835 transitions, 28321 flow [2023-01-28 02:50:33,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 835 transitions, 27802 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-28 02:50:33,962 INFO L231 Difference]: Finished difference. Result has 372 places, 770 transitions, 26072 flow [2023-01-28 02:50:33,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25442, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=329, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26072, PETRI_PLACES=372, PETRI_TRANSITIONS=770} [2023-01-28 02:50:33,963 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-01-28 02:50:33,963 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 770 transitions, 26072 flow [2023-01-28 02:50:33,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:33,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:33,963 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:50:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-01-28 02:50:33,963 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:50:33,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash 129870617, now seen corresponding path program 28 times [2023-01-28 02:50:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787858758] [2023-01-28 02:50:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:34,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:34,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787858758] [2023-01-28 02:50:34,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787858758] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:34,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:34,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:50:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491492] [2023-01-28 02:50:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:34,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:50:34,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:34,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:50:34,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:50:34,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:50:34,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 770 transitions, 26072 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:34,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:34,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:50:34,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:38,740 INFO L130 PetriNetUnfolder]: 7148/13006 cut-off events. [2023-01-28 02:50:38,741 INFO L131 PetriNetUnfolder]: For 476231/476231 co-relation queries the response was YES. [2023-01-28 02:50:38,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113886 conditions, 13006 events. 7148/13006 cut-off events. For 476231/476231 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 106206 event pairs, 2163 based on Foata normal form. 4/13010 useless extension candidates. Maximal degree in co-relation 113751. Up to 8497 conditions per place. [2023-01-28 02:50:38,913 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 457 selfloop transitions, 360 changer transitions 4/821 dead transitions. [2023-01-28 02:50:38,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 821 transitions, 28087 flow [2023-01-28 02:50:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:50:38,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:50:38,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2001 transitions. [2023-01-28 02:50:38,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3707615341856587 [2023-01-28 02:50:38,915 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2001 transitions. [2023-01-28 02:50:38,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2001 transitions. [2023-01-28 02:50:38,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:38,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2001 transitions. [2023-01-28 02:50:38,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.85714285714283) internal successors, (2001), 7 states have internal predecessors, (2001), 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) [2023-01-28 02:50:38,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:38,919 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:38,919 INFO L175 Difference]: Start difference. First operand has 372 places, 770 transitions, 26072 flow. Second operand 7 states and 2001 transitions. [2023-01-28 02:50:38,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 821 transitions, 28087 flow [2023-01-28 02:50:43,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 821 transitions, 27694 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-28 02:50:43,204 INFO L231 Difference]: Finished difference. Result has 376 places, 769 transitions, 26368 flow [2023-01-28 02:50:43,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25679, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=360, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26368, PETRI_PLACES=376, PETRI_TRANSITIONS=769} [2023-01-28 02:50:43,205 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2023-01-28 02:50:43,205 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 769 transitions, 26368 flow [2023-01-28 02:50:43,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:43,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:43,206 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:50:43,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-01-28 02:50:43,206 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:50:43,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1956490682, now seen corresponding path program 33 times [2023-01-28 02:50:43,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:43,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21619723] [2023-01-28 02:50:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:43,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:43,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:43,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21619723] [2023-01-28 02:50:43,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21619723] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:43,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:43,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:50:43,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219659469] [2023-01-28 02:50:43,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:43,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:50:43,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:43,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:50:43,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:50:43,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:50:43,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 769 transitions, 26368 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:43,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:43,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:50:43,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:47,875 INFO L130 PetriNetUnfolder]: 7135/12975 cut-off events. [2023-01-28 02:50:47,875 INFO L131 PetriNetUnfolder]: For 485554/485554 co-relation queries the response was YES. [2023-01-28 02:50:47,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114241 conditions, 12975 events. 7135/12975 cut-off events. For 485554/485554 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 105636 event pairs, 2033 based on Foata normal form. 8/12983 useless extension candidates. Maximal degree in co-relation 114106. Up to 5746 conditions per place. [2023-01-28 02:50:48,034 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 498 selfloop transitions, 333 changer transitions 0/831 dead transitions. [2023-01-28 02:50:48,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 831 transitions, 28810 flow [2023-01-28 02:50:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:50:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:50:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 02:50:48,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 02:50:48,036 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 02:50:48,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 02:50:48,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:48,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 02:50:48,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 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) [2023-01-28 02:50:48,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:48,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:48,039 INFO L175 Difference]: Start difference. First operand has 376 places, 769 transitions, 26368 flow. Second operand 7 states and 1997 transitions. [2023-01-28 02:50:48,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 831 transitions, 28810 flow [2023-01-28 02:50:52,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 831 transitions, 28070 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-01-28 02:50:52,190 INFO L231 Difference]: Finished difference. Result has 372 places, 771 transitions, 26419 flow [2023-01-28 02:50:52,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25540, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26419, PETRI_PLACES=372, PETRI_TRANSITIONS=771} [2023-01-28 02:50:52,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2023-01-28 02:50:52,190 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 771 transitions, 26419 flow [2023-01-28 02:50:52,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:52,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:50:52,191 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:50:52,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-01-28 02:50:52,191 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:50:52,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:50:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1288660147, now seen corresponding path program 29 times [2023-01-28 02:50:52,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:50:52,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658378079] [2023-01-28 02:50:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:50:52,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:50:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:50:52,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:50:52,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:50:52,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658378079] [2023-01-28 02:50:52,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658378079] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:50:52,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:50:52,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:50:52,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886694690] [2023-01-28 02:50:52,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:50:52,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:50:52,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:50:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:50:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:50:52,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:50:52,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 771 transitions, 26419 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:50:52,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:50:52,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:50:52,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:50:56,850 INFO L130 PetriNetUnfolder]: 7092/12888 cut-off events. [2023-01-28 02:50:56,850 INFO L131 PetriNetUnfolder]: For 482954/482954 co-relation queries the response was YES. [2023-01-28 02:50:56,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113246 conditions, 12888 events. 7092/12888 cut-off events. For 482954/482954 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 104889 event pairs, 2167 based on Foata normal form. 26/12914 useless extension candidates. Maximal degree in co-relation 113114. Up to 8471 conditions per place. [2023-01-28 02:50:57,010 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 455 selfloop transitions, 367 changer transitions 0/822 dead transitions. [2023-01-28 02:50:57,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 822 transitions, 28451 flow [2023-01-28 02:50:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:50:57,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:50:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:50:57,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:50:57,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:50:57,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:50:57,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:50:57,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:50:57,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:50:57,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:57,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:50:57,016 INFO L175 Difference]: Start difference. First operand has 372 places, 771 transitions, 26419 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:50:57,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 822 transitions, 28451 flow [2023-01-28 02:51:00,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 822 transitions, 27787 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-01-28 02:51:00,988 INFO L231 Difference]: Finished difference. Result has 374 places, 772 transitions, 26523 flow [2023-01-28 02:51:00,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25735, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=365, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26523, PETRI_PLACES=374, PETRI_TRANSITIONS=772} [2023-01-28 02:51:00,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2023-01-28 02:51:00,989 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 772 transitions, 26523 flow [2023-01-28 02:51:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:00,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:00,990 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:00,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-01-28 02:51:00,990 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:51:00,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1855671599, now seen corresponding path program 30 times [2023-01-28 02:51:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191044410] [2023-01-28 02:51:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:00,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:01,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:01,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:01,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191044410] [2023-01-28 02:51:01,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191044410] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:01,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:01,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:51:01,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869366735] [2023-01-28 02:51:01,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:01,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:51:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:51:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:51:01,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:51:01,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 772 transitions, 26523 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:01,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:01,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:51:01,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:51:06,083 INFO L130 PetriNetUnfolder]: 7072/12844 cut-off events. [2023-01-28 02:51:06,084 INFO L131 PetriNetUnfolder]: For 481441/481441 co-relation queries the response was YES. [2023-01-28 02:51:06,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113249 conditions, 12844 events. 7072/12844 cut-off events. For 481441/481441 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 104359 event pairs, 2165 based on Foata normal form. 8/12852 useless extension candidates. Maximal degree in co-relation 113116. Up to 8471 conditions per place. [2023-01-28 02:51:06,247 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 460 selfloop transitions, 362 changer transitions 1/823 dead transitions. [2023-01-28 02:51:06,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 823 transitions, 28481 flow [2023-01-28 02:51:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:51:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:51:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-28 02:51:06,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-28 02:51:06,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-28 02:51:06,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-28 02:51:06,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:51:06,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-28 02:51:06,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 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) [2023-01-28 02:51:06,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:06,252 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:06,252 INFO L175 Difference]: Start difference. First operand has 374 places, 772 transitions, 26523 flow. Second operand 7 states and 2004 transitions. [2023-01-28 02:51:06,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 823 transitions, 28481 flow [2023-01-28 02:51:10,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 823 transitions, 27770 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-01-28 02:51:10,644 INFO L231 Difference]: Finished difference. Result has 377 places, 770 transitions, 26454 flow [2023-01-28 02:51:10,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25759, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26454, PETRI_PLACES=377, PETRI_TRANSITIONS=770} [2023-01-28 02:51:10,644 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-28 02:51:10,645 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 770 transitions, 26454 flow [2023-01-28 02:51:10,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:10,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:10,645 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:10,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-01-28 02:51:10,645 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:51:10,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:10,645 INFO L85 PathProgramCache]: Analyzing trace with hash 885212803, now seen corresponding path program 31 times [2023-01-28 02:51:10,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:10,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450453457] [2023-01-28 02:51:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:10,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:10,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:10,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450453457] [2023-01-28 02:51:10,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450453457] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:10,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:10,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:51:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384726951] [2023-01-28 02:51:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:10,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:51:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:51:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:51:10,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:51:10,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 770 transitions, 26454 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:10,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:10,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:51:10,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:51:15,406 INFO L130 PetriNetUnfolder]: 7057/12813 cut-off events. [2023-01-28 02:51:15,406 INFO L131 PetriNetUnfolder]: For 481095/481095 co-relation queries the response was YES. [2023-01-28 02:51:15,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112933 conditions, 12813 events. 7057/12813 cut-off events. For 481095/481095 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 104000 event pairs, 2155 based on Foata normal form. 10/12823 useless extension candidates. Maximal degree in co-relation 112799. Up to 8471 conditions per place. [2023-01-28 02:51:15,569 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 456 selfloop transitions, 365 changer transitions 0/821 dead transitions. [2023-01-28 02:51:15,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 821 transitions, 28471 flow [2023-01-28 02:51:15,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:51:15,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:51:15,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 02:51:15,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 02:51:15,572 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 02:51:15,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 02:51:15,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:51:15,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 02:51:15,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 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) [2023-01-28 02:51:15,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:15,576 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:15,576 INFO L175 Difference]: Start difference. First operand has 377 places, 770 transitions, 26454 flow. Second operand 7 states and 2003 transitions. [2023-01-28 02:51:15,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 821 transitions, 28471 flow [2023-01-28 02:51:19,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 821 transitions, 27766 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-01-28 02:51:20,006 INFO L231 Difference]: Finished difference. Result has 377 places, 772 transitions, 26518 flow [2023-01-28 02:51:20,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25714, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=769, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=362, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=26518, PETRI_PLACES=377, PETRI_TRANSITIONS=772} [2023-01-28 02:51:20,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2023-01-28 02:51:20,008 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 772 transitions, 26518 flow [2023-01-28 02:51:20,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:20,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:20,009 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:20,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-01-28 02:51:20,009 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:51:20,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1581748409, now seen corresponding path program 32 times [2023-01-28 02:51:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:20,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996043331] [2023-01-28 02:51:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:20,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:20,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:20,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996043331] [2023-01-28 02:51:20,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996043331] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:20,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:20,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:51:20,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546060773] [2023-01-28 02:51:20,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:20,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:51:20,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:20,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:51:20,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:51:20,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:51:20,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 772 transitions, 26518 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:20,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:20,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:51:20,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:51:26,002 INFO L130 PetriNetUnfolder]: 8534/15680 cut-off events. [2023-01-28 02:51:26,002 INFO L131 PetriNetUnfolder]: For 578296/578296 co-relation queries the response was YES. [2023-01-28 02:51:26,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135815 conditions, 15680 events. 8534/15680 cut-off events. For 578296/578296 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 132955 event pairs, 1957 based on Foata normal form. 22/15702 useless extension candidates. Maximal degree in co-relation 135683. Up to 7742 conditions per place. [2023-01-28 02:51:26,214 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 727 selfloop transitions, 238 changer transitions 1/966 dead transitions. [2023-01-28 02:51:26,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 966 transitions, 32858 flow [2023-01-28 02:51:26,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:51:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:51:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2008 transitions. [2023-01-28 02:51:26,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3720585510468779 [2023-01-28 02:51:26,216 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2008 transitions. [2023-01-28 02:51:26,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2008 transitions. [2023-01-28 02:51:26,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:51:26,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2008 transitions. [2023-01-28 02:51:26,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.85714285714283) internal successors, (2008), 7 states have internal predecessors, (2008), 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) [2023-01-28 02:51:26,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:26,220 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:26,220 INFO L175 Difference]: Start difference. First operand has 377 places, 772 transitions, 26518 flow. Second operand 7 states and 2008 transitions. [2023-01-28 02:51:26,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 966 transitions, 32858 flow [2023-01-28 02:51:32,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 966 transitions, 32018 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 02:51:32,120 INFO L231 Difference]: Finished difference. Result has 382 places, 832 transitions, 28489 flow [2023-01-28 02:51:32,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=25790, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28489, PETRI_PLACES=382, PETRI_TRANSITIONS=832} [2023-01-28 02:51:32,121 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2023-01-28 02:51:32,121 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 832 transitions, 28489 flow [2023-01-28 02:51:32,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:32,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:32,122 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:32,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-01-28 02:51:32,122 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:51:32,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:32,122 INFO L85 PathProgramCache]: Analyzing trace with hash 612043710, now seen corresponding path program 34 times [2023-01-28 02:51:32,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:32,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625251958] [2023-01-28 02:51:32,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:32,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625251958] [2023-01-28 02:51:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625251958] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:32,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:32,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:51:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703219388] [2023-01-28 02:51:32,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:32,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:51:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:51:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:51:32,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:51:32,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 832 transitions, 28489 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:32,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:32,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:51:32,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:51:38,285 INFO L130 PetriNetUnfolder]: 8517/15645 cut-off events. [2023-01-28 02:51:38,286 INFO L131 PetriNetUnfolder]: For 584379/584379 co-relation queries the response was YES. [2023-01-28 02:51:38,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137168 conditions, 15645 events. 8517/15645 cut-off events. For 584379/584379 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 132610 event pairs, 3455 based on Foata normal form. 6/15651 useless extension candidates. Maximal degree in co-relation 137032. Up to 11873 conditions per place. [2023-01-28 02:51:38,490 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 671 selfloop transitions, 228 changer transitions 9/908 dead transitions. [2023-01-28 02:51:38,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 908 transitions, 30994 flow [2023-01-28 02:51:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:51:38,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:51:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2007 transitions. [2023-01-28 02:51:38,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3718732629238466 [2023-01-28 02:51:38,492 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2007 transitions. [2023-01-28 02:51:38,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2007 transitions. [2023-01-28 02:51:38,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:51:38,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2007 transitions. [2023-01-28 02:51:38,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.7142857142857) internal successors, (2007), 7 states have internal predecessors, (2007), 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) [2023-01-28 02:51:38,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:38,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:38,496 INFO L175 Difference]: Start difference. First operand has 382 places, 832 transitions, 28489 flow. Second operand 7 states and 2007 transitions. [2023-01-28 02:51:38,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 908 transitions, 30994 flow [2023-01-28 02:51:44,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 908 transitions, 30707 flow, removed 129 selfloop flow, removed 1 redundant places. [2023-01-28 02:51:44,305 INFO L231 Difference]: Finished difference. Result has 388 places, 835 transitions, 28711 flow [2023-01-28 02:51:44,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28161, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=28711, PETRI_PLACES=388, PETRI_TRANSITIONS=835} [2023-01-28 02:51:44,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 358 predicate places. [2023-01-28 02:51:44,306 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 835 transitions, 28711 flow [2023-01-28 02:51:44,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:44,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:44,306 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:44,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-01-28 02:51:44,306 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:51:44,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:44,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1055451217, now seen corresponding path program 33 times [2023-01-28 02:51:44,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:44,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606527429] [2023-01-28 02:51:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:44,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:44,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:44,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606527429] [2023-01-28 02:51:44,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606527429] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:51:44,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:51:44,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:51:44,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978633019] [2023-01-28 02:51:44,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:44,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:51:44,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:44,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:51:44,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:51:44,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:51:44,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 835 transitions, 28711 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:51:44,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:44,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:51:44,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:51:50,971 INFO L130 PetriNetUnfolder]: 9298/17120 cut-off events. [2023-01-28 02:51:50,971 INFO L131 PetriNetUnfolder]: For 621787/621787 co-relation queries the response was YES. [2023-01-28 02:51:51,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149111 conditions, 17120 events. 9298/17120 cut-off events. For 621787/621787 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 147417 event pairs, 1918 based on Foata normal form. 16/17136 useless extension candidates. Maximal degree in co-relation 148974. Up to 7742 conditions per place. [2023-01-28 02:51:51,222 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 706 selfloop transitions, 262 changer transitions 0/968 dead transitions. [2023-01-28 02:51:51,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 968 transitions, 33248 flow [2023-01-28 02:51:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:51:51,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:51:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2000 transitions. [2023-01-28 02:51:51,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3705762460626274 [2023-01-28 02:51:51,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2000 transitions. [2023-01-28 02:51:51,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2000 transitions. [2023-01-28 02:51:51,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:51:51,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2000 transitions. [2023-01-28 02:51:51,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.7142857142857) internal successors, (2000), 7 states have internal predecessors, (2000), 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) [2023-01-28 02:51:51,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:51,227 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:51:51,227 INFO L175 Difference]: Start difference. First operand has 388 places, 835 transitions, 28711 flow. Second operand 7 states and 2000 transitions. [2023-01-28 02:51:51,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 968 transitions, 33248 flow [2023-01-28 02:51:58,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 968 transitions, 32879 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-01-28 02:51:58,064 INFO L231 Difference]: Finished difference. Result has 393 places, 859 transitions, 29888 flow [2023-01-28 02:51:58,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=28296, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=29888, PETRI_PLACES=393, PETRI_TRANSITIONS=859} [2023-01-28 02:51:58,064 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 363 predicate places. [2023-01-28 02:51:58,064 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 859 transitions, 29888 flow [2023-01-28 02:51:58,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:51:58,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:51:58,065 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:51:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-01-28 02:51:58,065 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:51:58,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:51:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1355786162, now seen corresponding path program 35 times [2023-01-28 02:51:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:51:58,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310857646] [2023-01-28 02:51:58,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:51:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:51:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:51:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:58,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:51:58,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310857646] [2023-01-28 02:51:58,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310857646] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 02:51:58,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426590142] [2023-01-28 02:51:58,305 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:51:58,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:51:58,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:51:58,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 02:51:58,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 02:51:58,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 02:51:58,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:51:58,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 02:51:58,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:51:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:58,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:51:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:51:58,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426590142] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 02:51:58,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:51:58,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-01-28 02:51:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356993150] [2023-01-28 02:51:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:51:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:51:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:51:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:51:58,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-01-28 02:51:58,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:51:58,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 859 transitions, 29888 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:51:58,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:51:58,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:51:58,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:52:05,791 INFO L130 PetriNetUnfolder]: 9310/17150 cut-off events. [2023-01-28 02:52:05,791 INFO L131 PetriNetUnfolder]: For 650631/650631 co-relation queries the response was YES. [2023-01-28 02:52:05,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151523 conditions, 17150 events. 9310/17150 cut-off events. For 650631/650631 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147813 event pairs, 3934 based on Foata normal form. 8/17158 useless extension candidates. Maximal degree in co-relation 151383. Up to 13370 conditions per place. [2023-01-28 02:52:06,009 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 692 selfloop transitions, 238 changer transitions 0/930 dead transitions. [2023-01-28 02:52:06,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 930 transitions, 32545 flow [2023-01-28 02:52:06,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:52:06,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:52:06,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-28 02:52:06,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-28 02:52:06,011 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-28 02:52:06,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-28 02:52:06,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:52:06,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-28 02:52:06,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 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) [2023-01-28 02:52:06,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:52:06,015 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:52:06,015 INFO L175 Difference]: Start difference. First operand has 393 places, 859 transitions, 29888 flow. Second operand 7 states and 2010 transitions. [2023-01-28 02:52:06,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 930 transitions, 32545 flow [2023-01-28 02:52:12,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 930 transitions, 32274 flow, removed 32 selfloop flow, removed 2 redundant places. [2023-01-28 02:52:12,217 INFO L231 Difference]: Finished difference. Result has 399 places, 872 transitions, 30500 flow [2023-01-28 02:52:12,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29619, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=30500, PETRI_PLACES=399, PETRI_TRANSITIONS=872} [2023-01-28 02:52:12,218 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2023-01-28 02:52:12,218 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 872 transitions, 30500 flow [2023-01-28 02:52:12,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:52:12,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:52:12,218 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:52:12,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-28 02:52:12,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2023-01-28 02:52:12,423 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:52:12,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:52:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash 2100689833, now seen corresponding path program 34 times [2023-01-28 02:52:12,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:52:12,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17808036] [2023-01-28 02:52:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:52:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:52:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:52:12,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:52:12,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:52:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17808036] [2023-01-28 02:52:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17808036] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:52:12,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:52:12,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:52:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039117120] [2023-01-28 02:52:12,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:52:12,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:52:12,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:52:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:52:12,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:52:12,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:52:12,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 872 transitions, 30500 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:52:12,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:52:12,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:52:12,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:52:19,373 INFO L130 PetriNetUnfolder]: 9359/17219 cut-off events. [2023-01-28 02:52:19,373 INFO L131 PetriNetUnfolder]: For 649363/649363 co-relation queries the response was YES. [2023-01-28 02:52:19,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152449 conditions, 17219 events. 9359/17219 cut-off events. For 649363/649363 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 148189 event pairs, 2406 based on Foata normal form. 10/17229 useless extension candidates. Maximal degree in co-relation 152307. Up to 7845 conditions per place. [2023-01-28 02:52:19,602 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 675 selfloop transitions, 293 changer transitions 0/968 dead transitions. [2023-01-28 02:52:19,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 968 transitions, 34036 flow [2023-01-28 02:52:19,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:52:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:52:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 02:52:19,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 02:52:19,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 02:52:19,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 02:52:19,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:52:19,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 02:52:19,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 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) [2023-01-28 02:52:19,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:52:19,607 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:52:19,607 INFO L175 Difference]: Start difference. First operand has 399 places, 872 transitions, 30500 flow. Second operand 7 states and 1997 transitions. [2023-01-28 02:52:19,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 968 transitions, 34036 flow [2023-01-28 02:52:26,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 968 transitions, 33440 flow, removed 39 selfloop flow, removed 4 redundant places. [2023-01-28 02:52:26,469 INFO L231 Difference]: Finished difference. Result has 402 places, 889 transitions, 31149 flow [2023-01-28 02:52:26,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=29829, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31149, PETRI_PLACES=402, PETRI_TRANSITIONS=889} [2023-01-28 02:52:26,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2023-01-28 02:52:26,470 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 889 transitions, 31149 flow [2023-01-28 02:52:26,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:52:26,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:52:26,470 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:52:26,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-01-28 02:52:26,471 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:52:26,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:52:26,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1249926018, now seen corresponding path program 36 times [2023-01-28 02:52:26,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:52:26,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860770803] [2023-01-28 02:52:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:52:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:52:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:52:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:52:26,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:52:26,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860770803] [2023-01-28 02:52:26,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860770803] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:52:26,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:52:26,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:52:26,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052046029] [2023-01-28 02:52:26,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:52:26,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:52:26,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:52:26,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:52:26,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:52:26,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:52:26,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 889 transitions, 31149 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:52:26,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:52:26,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:52:26,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:52:33,610 INFO L130 PetriNetUnfolder]: 9365/17233 cut-off events. [2023-01-28 02:52:33,610 INFO L131 PetriNetUnfolder]: For 664120/664120 co-relation queries the response was YES. [2023-01-28 02:52:33,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152788 conditions, 17233 events. 9365/17233 cut-off events. For 664120/664120 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 149184 event pairs, 1724 based on Foata normal form. 12/17245 useless extension candidates. Maximal degree in co-relation 152647. Up to 7166 conditions per place. [2023-01-28 02:52:33,967 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 709 selfloop transitions, 298 changer transitions 1/1008 dead transitions. [2023-01-28 02:52:33,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1008 transitions, 34587 flow [2023-01-28 02:52:33,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 02:52:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 02:52:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2795 transitions. [2023-01-28 02:52:33,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36251621271076523 [2023-01-28 02:52:33,970 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2795 transitions. [2023-01-28 02:52:33,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2795 transitions. [2023-01-28 02:52:33,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:52:33,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2795 transitions. [2023-01-28 02:52:33,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 279.5) internal successors, (2795), 10 states have internal predecessors, (2795), 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) [2023-01-28 02:52:33,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 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) [2023-01-28 02:52:33,975 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 771.0) internal successors, (8481), 11 states have internal predecessors, (8481), 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) [2023-01-28 02:52:33,975 INFO L175 Difference]: Start difference. First operand has 402 places, 889 transitions, 31149 flow. Second operand 10 states and 2795 transitions. [2023-01-28 02:52:33,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1008 transitions, 34587 flow [2023-01-28 02:52:41,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 1008 transitions, 33977 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-01-28 02:52:41,250 INFO L231 Difference]: Finished difference. Result has 408 places, 898 transitions, 31364 flow [2023-01-28 02:52:41,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30502, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=288, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31364, PETRI_PLACES=408, PETRI_TRANSITIONS=898} [2023-01-28 02:52:41,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2023-01-28 02:52:41,251 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 898 transitions, 31364 flow [2023-01-28 02:52:41,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:52:41,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:52:41,252 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:52:41,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-01-28 02:52:41,252 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:52:41,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:52:41,252 INFO L85 PathProgramCache]: Analyzing trace with hash 452672000, now seen corresponding path program 37 times [2023-01-28 02:52:41,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:52:41,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740471618] [2023-01-28 02:52:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:52:41,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:52:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:52:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:52:41,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:52:41,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740471618] [2023-01-28 02:52:41,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740471618] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:52:41,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:52:41,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:52:41,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624679061] [2023-01-28 02:52:41,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:52:41,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:52:41,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:52:41,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:52:41,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:52:41,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:52:41,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 898 transitions, 31364 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:52:41,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:52:41,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:52:41,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:52:48,197 INFO L130 PetriNetUnfolder]: 9348/17196 cut-off events. [2023-01-28 02:52:48,197 INFO L131 PetriNetUnfolder]: For 672418/672418 co-relation queries the response was YES. [2023-01-28 02:52:48,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154706 conditions, 17196 events. 9348/17196 cut-off events. For 672418/672418 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 148024 event pairs, 3899 based on Foata normal form. 6/17202 useless extension candidates. Maximal degree in co-relation 154564. Up to 13439 conditions per place. [2023-01-28 02:52:48,501 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 719 selfloop transitions, 238 changer transitions 9/966 dead transitions. [2023-01-28 02:52:48,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 966 transitions, 34001 flow [2023-01-28 02:52:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:52:48,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:52:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1996 transitions. [2023-01-28 02:52:48,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36983509357050215 [2023-01-28 02:52:48,503 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1996 transitions. [2023-01-28 02:52:48,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1996 transitions. [2023-01-28 02:52:48,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:52:48,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1996 transitions. [2023-01-28 02:52:48,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.14285714285717) internal successors, (1996), 7 states have internal predecessors, (1996), 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) [2023-01-28 02:52:48,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:52:48,507 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:52:48,507 INFO L175 Difference]: Start difference. First operand has 408 places, 898 transitions, 31364 flow. Second operand 7 states and 1996 transitions. [2023-01-28 02:52:48,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 966 transitions, 34001 flow [2023-01-28 02:52:54,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 966 transitions, 33899 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-01-28 02:52:54,747 INFO L231 Difference]: Finished difference. Result has 414 places, 900 transitions, 31781 flow [2023-01-28 02:52:54,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31218, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31781, PETRI_PLACES=414, PETRI_TRANSITIONS=900} [2023-01-28 02:52:54,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2023-01-28 02:52:54,748 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 900 transitions, 31781 flow [2023-01-28 02:52:54,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:52:54,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:52:54,748 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:52:54,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-01-28 02:52:54,749 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:52:54,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:52:54,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1535935923, now seen corresponding path program 35 times [2023-01-28 02:52:54,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:52:54,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262015466] [2023-01-28 02:52:54,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:52:54,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:52:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:52:54,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:52:54,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:52:54,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262015466] [2023-01-28 02:52:54,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262015466] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:52:54,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:52:54,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:52:54,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789286983] [2023-01-28 02:52:54,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:52:54,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:52:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:52:54,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:52:54,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:52:54,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:52:54,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 900 transitions, 31781 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:52:54,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:52:54,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:52:54,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:53:01,722 INFO L130 PetriNetUnfolder]: 9330/17152 cut-off events. [2023-01-28 02:53:01,723 INFO L131 PetriNetUnfolder]: For 667098/667098 co-relation queries the response was YES. [2023-01-28 02:53:01,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155330 conditions, 17152 events. 9330/17152 cut-off events. For 667098/667098 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 147324 event pairs, 2388 based on Foata normal form. 4/17156 useless extension candidates. Maximal degree in co-relation 155186. Up to 7804 conditions per place. [2023-01-28 02:53:01,994 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 678 selfloop transitions, 291 changer transitions 4/973 dead transitions. [2023-01-28 02:53:01,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 973 transitions, 34697 flow [2023-01-28 02:53:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:53:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:53:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1990 transitions. [2023-01-28 02:53:01,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36872336483231427 [2023-01-28 02:53:01,996 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1990 transitions. [2023-01-28 02:53:01,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1990 transitions. [2023-01-28 02:53:01,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:53:01,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1990 transitions. [2023-01-28 02:53:01,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.2857142857143) internal successors, (1990), 7 states have internal predecessors, (1990), 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) [2023-01-28 02:53:02,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:02,000 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:02,000 INFO L175 Difference]: Start difference. First operand has 414 places, 900 transitions, 31781 flow. Second operand 7 states and 1990 transitions. [2023-01-28 02:53:02,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 973 transitions, 34697 flow [2023-01-28 02:53:08,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 973 transitions, 34277 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-01-28 02:53:08,749 INFO L231 Difference]: Finished difference. Result has 417 places, 898 transitions, 31874 flow [2023-01-28 02:53:08,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31333, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31874, PETRI_PLACES=417, PETRI_TRANSITIONS=898} [2023-01-28 02:53:08,750 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2023-01-28 02:53:08,750 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 898 transitions, 31874 flow [2023-01-28 02:53:08,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:53:08,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:53:08,751 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:53:08,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-01-28 02:53:08,751 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:53:08,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:53:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1051359184, now seen corresponding path program 38 times [2023-01-28 02:53:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:53:08,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956839323] [2023-01-28 02:53:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:53:08,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:53:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:53:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:53:09,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:53:09,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956839323] [2023-01-28 02:53:09,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956839323] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:53:09,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:53:09,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:53:09,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473613221] [2023-01-28 02:53:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:53:09,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:53:09,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:53:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:53:09,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:53:09,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:53:09,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 898 transitions, 31874 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:53:09,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:53:09,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:53:09,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:53:15,676 INFO L130 PetriNetUnfolder]: 9295/17085 cut-off events. [2023-01-28 02:53:15,677 INFO L131 PetriNetUnfolder]: For 681570/681570 co-relation queries the response was YES. [2023-01-28 02:53:15,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155216 conditions, 17085 events. 9295/17085 cut-off events. For 681570/681570 co-relation queries the response was YES. Maximal size of possible extension queue 1104. Compared 146769 event pairs, 3959 based on Foata normal form. 12/17097 useless extension candidates. Maximal degree in co-relation 155072. Up to 13417 conditions per place. [2023-01-28 02:53:16,062 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 709 selfloop transitions, 245 changer transitions 1/955 dead transitions. [2023-01-28 02:53:16,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 955 transitions, 34300 flow [2023-01-28 02:53:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:53:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:53:16,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1999 transitions. [2023-01-28 02:53:16,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3703909579395961 [2023-01-28 02:53:16,064 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1999 transitions. [2023-01-28 02:53:16,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1999 transitions. [2023-01-28 02:53:16,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:53:16,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1999 transitions. [2023-01-28 02:53:16,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.57142857142856) internal successors, (1999), 7 states have internal predecessors, (1999), 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) [2023-01-28 02:53:16,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:16,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:16,069 INFO L175 Difference]: Start difference. First operand has 417 places, 898 transitions, 31874 flow. Second operand 7 states and 1999 transitions. [2023-01-28 02:53:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 955 transitions, 34300 flow [2023-01-28 02:53:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 955 transitions, 33810 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-01-28 02:53:22,264 INFO L231 Difference]: Finished difference. Result has 418 places, 900 transitions, 31925 flow [2023-01-28 02:53:22,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31343, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31925, PETRI_PLACES=418, PETRI_TRANSITIONS=900} [2023-01-28 02:53:22,265 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2023-01-28 02:53:22,266 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 900 transitions, 31925 flow [2023-01-28 02:53:22,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:53:22,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:53:22,266 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:53:22,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-01-28 02:53:22,266 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:53:22,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:53:22,266 INFO L85 PathProgramCache]: Analyzing trace with hash 803032932, now seen corresponding path program 39 times [2023-01-28 02:53:22,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:53:22,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028126253] [2023-01-28 02:53:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:53:22,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:53:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:53:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:53:22,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:53:22,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028126253] [2023-01-28 02:53:22,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028126253] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:53:22,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:53:22,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:53:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325618698] [2023-01-28 02:53:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:53:22,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:53:22,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:53:22,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:53:22,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:53:22,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:53:22,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 900 transitions, 31925 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:53:22,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:53:22,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:53:22,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:53:29,271 INFO L130 PetriNetUnfolder]: 9286/17066 cut-off events. [2023-01-28 02:53:29,272 INFO L131 PetriNetUnfolder]: For 681619/681619 co-relation queries the response was YES. [2023-01-28 02:53:29,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155098 conditions, 17066 events. 9286/17066 cut-off events. For 681619/681619 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 146419 event pairs, 3941 based on Foata normal form. 4/17070 useless extension candidates. Maximal degree in co-relation 154952. Up to 13417 conditions per place. [2023-01-28 02:53:29,526 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 703 selfloop transitions, 246 changer transitions 0/949 dead transitions. [2023-01-28 02:53:29,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 949 transitions, 34223 flow [2023-01-28 02:53:29,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:53:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:53:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1997 transitions. [2023-01-28 02:53:29,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002038169353346 [2023-01-28 02:53:29,528 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1997 transitions. [2023-01-28 02:53:29,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1997 transitions. [2023-01-28 02:53:29,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:53:29,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1997 transitions. [2023-01-28 02:53:29,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.2857142857143) internal successors, (1997), 7 states have internal predecessors, (1997), 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) [2023-01-28 02:53:29,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:29,533 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:29,533 INFO L175 Difference]: Start difference. First operand has 418 places, 900 transitions, 31925 flow. Second operand 7 states and 1997 transitions. [2023-01-28 02:53:29,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 949 transitions, 34223 flow [2023-01-28 02:53:35,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 949 transitions, 33543 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-01-28 02:53:35,629 INFO L231 Difference]: Finished difference. Result has 420 places, 899 transitions, 31738 flow [2023-01-28 02:53:35,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31197, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31738, PETRI_PLACES=420, PETRI_TRANSITIONS=899} [2023-01-28 02:53:35,629 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2023-01-28 02:53:35,629 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 899 transitions, 31738 flow [2023-01-28 02:53:35,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:53:35,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:53:35,630 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:53:35,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-01-28 02:53:35,630 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:53:35,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:53:35,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1018710692, now seen corresponding path program 40 times [2023-01-28 02:53:35,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:53:35,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814625744] [2023-01-28 02:53:35,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:53:35,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:53:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:53:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:53:35,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:53:35,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814625744] [2023-01-28 02:53:35,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814625744] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:53:35,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:53:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:53:35,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804184948] [2023-01-28 02:53:35,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:53:35,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:53:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:53:35,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:53:35,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:53:35,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:53:35,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 899 transitions, 31738 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:53:35,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:53:35,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:53:35,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:53:42,283 INFO L130 PetriNetUnfolder]: 9262/17014 cut-off events. [2023-01-28 02:53:42,284 INFO L131 PetriNetUnfolder]: For 671050/671050 co-relation queries the response was YES. [2023-01-28 02:53:42,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154612 conditions, 17014 events. 9262/17014 cut-off events. For 671050/671050 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 146080 event pairs, 3865 based on Foata normal form. 4/17018 useless extension candidates. Maximal degree in co-relation 154466. Up to 13417 conditions per place. [2023-01-28 02:53:42,665 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 238 changer transitions 0/960 dead transitions. [2023-01-28 02:53:42,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 960 transitions, 34139 flow [2023-01-28 02:53:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:53:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:53:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2003 transitions. [2023-01-28 02:53:42,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37113211043172134 [2023-01-28 02:53:42,666 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2003 transitions. [2023-01-28 02:53:42,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2003 transitions. [2023-01-28 02:53:42,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:53:42,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2003 transitions. [2023-01-28 02:53:42,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.14285714285717) internal successors, (2003), 7 states have internal predecessors, (2003), 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) [2023-01-28 02:53:42,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:42,670 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:42,670 INFO L175 Difference]: Start difference. First operand has 420 places, 899 transitions, 31738 flow. Second operand 7 states and 2003 transitions. [2023-01-28 02:53:42,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 960 transitions, 34139 flow [2023-01-28 02:53:48,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 960 transitions, 33687 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 02:53:48,844 INFO L231 Difference]: Finished difference. Result has 423 places, 897 transitions, 31702 flow [2023-01-28 02:53:48,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31226, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31702, PETRI_PLACES=423, PETRI_TRANSITIONS=897} [2023-01-28 02:53:48,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2023-01-28 02:53:48,845 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 897 transitions, 31702 flow [2023-01-28 02:53:48,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:53:48,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:53:48,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:53:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-01-28 02:53:48,846 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:53:48,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:53:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1059464510, now seen corresponding path program 41 times [2023-01-28 02:53:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:53:48,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283000223] [2023-01-28 02:53:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:53:48,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:53:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:53:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:53:49,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:53:49,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283000223] [2023-01-28 02:53:49,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283000223] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:53:49,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:53:49,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:53:49,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472158045] [2023-01-28 02:53:49,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:53:49,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:53:49,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:53:49,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:53:49,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:53:49,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:53:49,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 897 transitions, 31702 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:53:49,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:53:49,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:53:49,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:53:56,113 INFO L130 PetriNetUnfolder]: 9246/16984 cut-off events. [2023-01-28 02:53:56,113 INFO L131 PetriNetUnfolder]: For 671428/671428 co-relation queries the response was YES. [2023-01-28 02:53:56,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154519 conditions, 16984 events. 9246/16984 cut-off events. For 671428/671428 co-relation queries the response was YES. Maximal size of possible extension queue 1096. Compared 145768 event pairs, 3863 based on Foata normal form. 6/16990 useless extension candidates. Maximal degree in co-relation 154373. Up to 13417 conditions per place. [2023-01-28 02:53:56,340 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 710 selfloop transitions, 236 changer transitions 6/952 dead transitions. [2023-01-28 02:53:56,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 952 transitions, 34067 flow [2023-01-28 02:53:56,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:53:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:53:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 02:53:56,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 02:53:56,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 02:53:56,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 02:53:56,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:53:56,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 02:53:56,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 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) [2023-01-28 02:53:56,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:56,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:53:56,347 INFO L175 Difference]: Start difference. First operand has 423 places, 897 transitions, 31702 flow. Second operand 7 states and 1995 transitions. [2023-01-28 02:53:56,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 952 transitions, 34067 flow [2023-01-28 02:54:02,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 952 transitions, 33614 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 02:54:02,655 INFO L231 Difference]: Finished difference. Result has 426 places, 895 transitions, 31646 flow [2023-01-28 02:54:02,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31206, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=896, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=31646, PETRI_PLACES=426, PETRI_TRANSITIONS=895} [2023-01-28 02:54:02,656 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 396 predicate places. [2023-01-28 02:54:02,656 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 895 transitions, 31646 flow [2023-01-28 02:54:02,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:54:02,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:54:02,657 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:54:02,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-01-28 02:54:02,657 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:54:02,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:54:02,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1803329933, now seen corresponding path program 36 times [2023-01-28 02:54:02,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:54:02,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446537798] [2023-01-28 02:54:02,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:54:02,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:54:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:54:02,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:54:02,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:54:02,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446537798] [2023-01-28 02:54:02,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446537798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:54:02,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:54:02,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:54:02,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638133185] [2023-01-28 02:54:02,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:54:02,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:54:02,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:54:02,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:54:02,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:54:02,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:54:02,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 895 transitions, 31646 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:54:02,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:54:02,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:54:02,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:54:09,563 INFO L130 PetriNetUnfolder]: 9201/16809 cut-off events. [2023-01-28 02:54:09,564 INFO L131 PetriNetUnfolder]: For 664842/664842 co-relation queries the response was YES. [2023-01-28 02:54:09,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153418 conditions, 16809 events. 9201/16809 cut-off events. For 664842/664842 co-relation queries the response was YES. Maximal size of possible extension queue 1078. Compared 142781 event pairs, 2226 based on Foata normal form. 22/16831 useless extension candidates. Maximal degree in co-relation 153272. Up to 8427 conditions per place. [2023-01-28 02:54:09,797 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 713 selfloop transitions, 289 changer transitions 0/1002 dead transitions. [2023-01-28 02:54:09,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 1002 transitions, 35250 flow [2023-01-28 02:54:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:54:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:54:09,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1966 transitions. [2023-01-28 02:54:09,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642764498795627 [2023-01-28 02:54:09,799 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1966 transitions. [2023-01-28 02:54:09,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1966 transitions. [2023-01-28 02:54:09,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:54:09,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1966 transitions. [2023-01-28 02:54:09,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.85714285714283) internal successors, (1966), 7 states have internal predecessors, (1966), 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) [2023-01-28 02:54:09,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:09,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:09,803 INFO L175 Difference]: Start difference. First operand has 426 places, 895 transitions, 31646 flow. Second operand 7 states and 1966 transitions. [2023-01-28 02:54:09,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 1002 transitions, 35250 flow [2023-01-28 02:54:15,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 1002 transitions, 34762 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-01-28 02:54:16,041 INFO L231 Difference]: Finished difference. Result has 428 places, 900 transitions, 32194 flow [2023-01-28 02:54:16,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=30962, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=889, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=32194, PETRI_PLACES=428, PETRI_TRANSITIONS=900} [2023-01-28 02:54:16,041 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2023-01-28 02:54:16,042 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 900 transitions, 32194 flow [2023-01-28 02:54:16,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:54:16,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:54:16,042 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:54:16,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-01-28 02:54:16,042 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:54:16,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:54:16,042 INFO L85 PathProgramCache]: Analyzing trace with hash -170138933, now seen corresponding path program 37 times [2023-01-28 02:54:16,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:54:16,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293962446] [2023-01-28 02:54:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:54:16,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:54:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:54:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:54:16,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:54:16,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293962446] [2023-01-28 02:54:16,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293962446] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:54:16,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:54:16,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:54:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841439689] [2023-01-28 02:54:16,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:54:16,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:54:16,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:54:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:54:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:54:16,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:54:16,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 900 transitions, 32194 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:54:16,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:54:16,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:54:16,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:54:23,053 INFO L130 PetriNetUnfolder]: 9418/17218 cut-off events. [2023-01-28 02:54:23,053 INFO L131 PetriNetUnfolder]: For 698901/698901 co-relation queries the response was YES. [2023-01-28 02:54:23,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158761 conditions, 17218 events. 9418/17218 cut-off events. For 698901/698901 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 147399 event pairs, 1828 based on Foata normal form. 12/17230 useless extension candidates. Maximal degree in co-relation 158613. Up to 6237 conditions per place. [2023-01-28 02:54:23,344 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 673 selfloop transitions, 383 changer transitions 0/1056 dead transitions. [2023-01-28 02:54:23,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 1056 transitions, 37704 flow [2023-01-28 02:54:23,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:54:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:54:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1966 transitions. [2023-01-28 02:54:23,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642764498795627 [2023-01-28 02:54:23,347 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1966 transitions. [2023-01-28 02:54:23,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1966 transitions. [2023-01-28 02:54:23,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:54:23,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1966 transitions. [2023-01-28 02:54:23,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.85714285714283) internal successors, (1966), 7 states have internal predecessors, (1966), 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) [2023-01-28 02:54:23,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:23,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:23,351 INFO L175 Difference]: Start difference. First operand has 428 places, 900 transitions, 32194 flow. Second operand 7 states and 1966 transitions. [2023-01-28 02:54:23,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 1056 transitions, 37704 flow [2023-01-28 02:54:30,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 1056 transitions, 36992 flow, removed 146 selfloop flow, removed 3 redundant places. [2023-01-28 02:54:30,682 INFO L231 Difference]: Finished difference. Result has 434 places, 928 transitions, 33793 flow [2023-01-28 02:54:30,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=31626, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33793, PETRI_PLACES=434, PETRI_TRANSITIONS=928} [2023-01-28 02:54:30,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2023-01-28 02:54:30,683 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 928 transitions, 33793 flow [2023-01-28 02:54:30,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:54:30,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:54:30,684 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:54:30,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-01-28 02:54:30,684 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:54:30,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:54:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1784353919, now seen corresponding path program 38 times [2023-01-28 02:54:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:54:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460630294] [2023-01-28 02:54:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:54:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:54:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:54:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:54:30,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:54:30,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460630294] [2023-01-28 02:54:30,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460630294] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:54:30,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:54:30,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:54:30,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366290959] [2023-01-28 02:54:30,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:54:30,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:54:30,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:54:30,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:54:30,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:54:30,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:54:30,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 928 transitions, 33793 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:54:30,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:54:30,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:54:30,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:54:38,364 INFO L130 PetriNetUnfolder]: 9326/16990 cut-off events. [2023-01-28 02:54:38,364 INFO L131 PetriNetUnfolder]: For 704711/704711 co-relation queries the response was YES. [2023-01-28 02:54:38,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157640 conditions, 16990 events. 9326/16990 cut-off events. For 704711/704711 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 144047 event pairs, 2266 based on Foata normal form. 64/17054 useless extension candidates. Maximal degree in co-relation 157489. Up to 7778 conditions per place. [2023-01-28 02:54:38,628 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 724 selfloop transitions, 304 changer transitions 0/1028 dead transitions. [2023-01-28 02:54:38,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 1028 transitions, 37326 flow [2023-01-28 02:54:38,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:54:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:54:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2005 transitions. [2023-01-28 02:54:38,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37150268667778397 [2023-01-28 02:54:38,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2005 transitions. [2023-01-28 02:54:38,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2005 transitions. [2023-01-28 02:54:38,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:54:38,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2005 transitions. [2023-01-28 02:54:38,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.42857142857144) internal successors, (2005), 7 states have internal predecessors, (2005), 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) [2023-01-28 02:54:38,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:38,634 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:38,634 INFO L175 Difference]: Start difference. First operand has 434 places, 928 transitions, 33793 flow. Second operand 7 states and 2005 transitions. [2023-01-28 02:54:38,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 1028 transitions, 37326 flow [2023-01-28 02:54:46,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 1028 transitions, 36655 flow, removed 50 selfloop flow, removed 4 redundant places. [2023-01-28 02:54:46,172 INFO L231 Difference]: Finished difference. Result has 437 places, 928 transitions, 33795 flow [2023-01-28 02:54:46,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=32965, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=33795, PETRI_PLACES=437, PETRI_TRANSITIONS=928} [2023-01-28 02:54:46,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2023-01-28 02:54:46,173 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 928 transitions, 33795 flow [2023-01-28 02:54:46,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:54:46,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:54:46,174 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:54:46,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-01-28 02:54:46,174 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:54:46,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:54:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash 569817878, now seen corresponding path program 42 times [2023-01-28 02:54:46,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:54:46,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598155912] [2023-01-28 02:54:46,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:54:46,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:54:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:54:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:54:46,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:54:46,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598155912] [2023-01-28 02:54:46,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598155912] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:54:46,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:54:46,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:54:46,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971201705] [2023-01-28 02:54:46,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:54:46,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:54:46,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:54:46,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:54:46,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:54:46,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:54:46,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 928 transitions, 33795 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:54:46,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:54:46,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:54:46,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:54:53,794 INFO L130 PetriNetUnfolder]: 9702/17682 cut-off events. [2023-01-28 02:54:53,794 INFO L131 PetriNetUnfolder]: For 720005/720005 co-relation queries the response was YES. [2023-01-28 02:54:53,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162442 conditions, 17682 events. 9702/17682 cut-off events. For 720005/720005 co-relation queries the response was YES. Maximal size of possible extension queue 1143. Compared 151144 event pairs, 3934 based on Foata normal form. 8/17690 useless extension candidates. Maximal degree in co-relation 162292. Up to 13464 conditions per place. [2023-01-28 02:54:54,063 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 827 selfloop transitions, 226 changer transitions 0/1053 dead transitions. [2023-01-28 02:54:54,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 1053 transitions, 38439 flow [2023-01-28 02:54:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:54:54,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:54:54,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 02:54:54,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 02:54:54,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 02:54:54,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 02:54:54,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:54:54,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 02:54:54,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 02:54:54,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:54,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:54:54,069 INFO L175 Difference]: Start difference. First operand has 437 places, 928 transitions, 33795 flow. Second operand 7 states and 2002 transitions. [2023-01-28 02:54:54,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 1053 transitions, 38439 flow [2023-01-28 02:55:01,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1053 transitions, 38032 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 02:55:01,374 INFO L231 Difference]: Finished difference. Result has 443 places, 948 transitions, 34688 flow [2023-01-28 02:55:01,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=33420, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=34688, PETRI_PLACES=443, PETRI_TRANSITIONS=948} [2023-01-28 02:55:01,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2023-01-28 02:55:01,375 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 948 transitions, 34688 flow [2023-01-28 02:55:01,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:55:01,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:55:01,375 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:55:01,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-01-28 02:55:01,375 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:55:01,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:55:01,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1553665876, now seen corresponding path program 43 times [2023-01-28 02:55:01,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:55:01,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565840541] [2023-01-28 02:55:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:55:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:55:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:55:01,603 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:55:01,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:55:01,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565840541] [2023-01-28 02:55:01,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565840541] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:55:01,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:55:01,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:55:01,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125403656] [2023-01-28 02:55:01,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:55:01,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:55:01,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:55:01,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:55:01,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:55:01,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:55:01,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 948 transitions, 34688 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:55:01,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:55:01,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:55:01,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:55:09,402 INFO L130 PetriNetUnfolder]: 9783/18047 cut-off events. [2023-01-28 02:55:09,403 INFO L131 PetriNetUnfolder]: For 737942/737942 co-relation queries the response was YES. [2023-01-28 02:55:09,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165134 conditions, 18047 events. 9783/18047 cut-off events. For 737942/737942 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 157648 event pairs, 3812 based on Foata normal form. 12/18059 useless extension candidates. Maximal degree in co-relation 164981. Up to 13464 conditions per place. [2023-01-28 02:55:09,666 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 777 selfloop transitions, 260 changer transitions 0/1037 dead transitions. [2023-01-28 02:55:09,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 1037 transitions, 38509 flow [2023-01-28 02:55:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:55:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:55:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1954 transitions. [2023-01-28 02:55:09,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36205299240318695 [2023-01-28 02:55:09,668 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1954 transitions. [2023-01-28 02:55:09,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1954 transitions. [2023-01-28 02:55:09,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:55:09,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1954 transitions. [2023-01-28 02:55:09,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.14285714285717) internal successors, (1954), 7 states have internal predecessors, (1954), 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) [2023-01-28 02:55:09,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:09,672 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:09,672 INFO L175 Difference]: Start difference. First operand has 443 places, 948 transitions, 34688 flow. Second operand 7 states and 1954 transitions. [2023-01-28 02:55:09,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 1037 transitions, 38509 flow [2023-01-28 02:55:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1037 transitions, 37991 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-01-28 02:55:17,624 INFO L231 Difference]: Finished difference. Result has 450 places, 969 transitions, 35638 flow [2023-01-28 02:55:17,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=34178, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=948, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35638, PETRI_PLACES=450, PETRI_TRANSITIONS=969} [2023-01-28 02:55:17,625 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2023-01-28 02:55:17,625 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 969 transitions, 35638 flow [2023-01-28 02:55:17,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:55:17,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:55:17,625 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:55:17,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-01-28 02:55:17,626 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:55:17,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:55:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1404244369, now seen corresponding path program 39 times [2023-01-28 02:55:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:55:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291588877] [2023-01-28 02:55:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:55:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:55:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:55:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:55:17,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:55:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291588877] [2023-01-28 02:55:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291588877] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:55:17,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:55:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:55:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815731795] [2023-01-28 02:55:17,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:55:17,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:55:17,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:55:17,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:55:17,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:55:17,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:55:17,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 969 transitions, 35638 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:55:17,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:55:17,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:55:17,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:55:24,900 INFO L130 PetriNetUnfolder]: 9691/17819 cut-off events. [2023-01-28 02:55:24,900 INFO L131 PetriNetUnfolder]: For 752530/752530 co-relation queries the response was YES. [2023-01-28 02:55:25,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165072 conditions, 17819 events. 9691/17819 cut-off events. For 752530/752530 co-relation queries the response was YES. Maximal size of possible extension queue 1172. Compared 154067 event pairs, 2360 based on Foata normal form. 64/17883 useless extension candidates. Maximal degree in co-relation 164915. Up to 8561 conditions per place. [2023-01-28 02:55:25,154 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 747 selfloop transitions, 315 changer transitions 0/1062 dead transitions. [2023-01-28 02:55:25,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1062 transitions, 38896 flow [2023-01-28 02:55:25,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:55:25,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:55:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2006 transitions. [2023-01-28 02:55:25,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716879748008153 [2023-01-28 02:55:25,156 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2006 transitions. [2023-01-28 02:55:25,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2006 transitions. [2023-01-28 02:55:25,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:55:25,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2006 transitions. [2023-01-28 02:55:25,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.57142857142856) internal successors, (2006), 7 states have internal predecessors, (2006), 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) [2023-01-28 02:55:25,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:25,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:25,160 INFO L175 Difference]: Start difference. First operand has 450 places, 969 transitions, 35638 flow. Second operand 7 states and 2006 transitions. [2023-01-28 02:55:25,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1062 transitions, 38896 flow [2023-01-28 02:55:33,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1062 transitions, 38437 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-01-28 02:55:33,088 INFO L231 Difference]: Finished difference. Result has 452 places, 967 transitions, 35732 flow [2023-01-28 02:55:33,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35102, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=967, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35732, PETRI_PLACES=452, PETRI_TRANSITIONS=967} [2023-01-28 02:55:33,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-01-28 02:55:33,089 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 967 transitions, 35732 flow [2023-01-28 02:55:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:55:33,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:55:33,090 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:55:33,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-01-28 02:55:33,090 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:55:33,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:55:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash 251251914, now seen corresponding path program 44 times [2023-01-28 02:55:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:55:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145888721] [2023-01-28 02:55:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:55:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:55:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:55:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:55:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:55:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145888721] [2023-01-28 02:55:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145888721] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:55:33,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:55:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:55:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807301876] [2023-01-28 02:55:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:55:33,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:55:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:55:33,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:55:33,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:55:33,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:55:33,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 967 transitions, 35732 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:55:33,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:55:33,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:55:33,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:55:40,613 INFO L130 PetriNetUnfolder]: 9680/17786 cut-off events. [2023-01-28 02:55:40,613 INFO L131 PetriNetUnfolder]: For 749678/749678 co-relation queries the response was YES. [2023-01-28 02:55:40,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165032 conditions, 17786 events. 9680/17786 cut-off events. For 749678/749678 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 153970 event pairs, 3970 based on Foata normal form. 8/17794 useless extension candidates. Maximal degree in co-relation 164875. Up to 13236 conditions per place. [2023-01-28 02:55:40,885 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 742 selfloop transitions, 271 changer transitions 0/1013 dead transitions. [2023-01-28 02:55:40,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 1013 transitions, 38078 flow [2023-01-28 02:55:40,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:55:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:55:40,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1995 transitions. [2023-01-28 02:55:40,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36964980544747084 [2023-01-28 02:55:40,887 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1995 transitions. [2023-01-28 02:55:40,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1995 transitions. [2023-01-28 02:55:40,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:55:40,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1995 transitions. [2023-01-28 02:55:40,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 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) [2023-01-28 02:55:40,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:40,890 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:40,890 INFO L175 Difference]: Start difference. First operand has 452 places, 967 transitions, 35732 flow. Second operand 7 states and 1995 transitions. [2023-01-28 02:55:40,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 1013 transitions, 38078 flow [2023-01-28 02:55:48,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 1013 transitions, 37529 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-01-28 02:55:48,488 INFO L231 Difference]: Finished difference. Result has 452 places, 964 transitions, 35623 flow [2023-01-28 02:55:48,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=35623, PETRI_PLACES=452, PETRI_TRANSITIONS=964} [2023-01-28 02:55:48,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2023-01-28 02:55:48,489 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 964 transitions, 35623 flow [2023-01-28 02:55:48,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:55:48,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:55:48,490 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:55:48,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-01-28 02:55:48,490 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:55:48,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:55:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1180859485, now seen corresponding path program 40 times [2023-01-28 02:55:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:55:48,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070322182] [2023-01-28 02:55:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:55:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:55:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:55:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:55:48,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:55:48,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070322182] [2023-01-28 02:55:48,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070322182] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:55:48,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:55:48,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:55:48,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455667645] [2023-01-28 02:55:48,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:55:48,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:55:48,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:55:48,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:55:48,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:55:48,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:55:48,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 964 transitions, 35623 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:55:48,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:55:48,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:55:48,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:55:56,334 INFO L130 PetriNetUnfolder]: 10063/18572 cut-off events. [2023-01-28 02:55:56,334 INFO L131 PetriNetUnfolder]: For 762819/762819 co-relation queries the response was YES. [2023-01-28 02:55:56,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170815 conditions, 18572 events. 10063/18572 cut-off events. For 762819/762819 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 162637 event pairs, 2256 based on Foata normal form. 58/18630 useless extension candidates. Maximal degree in co-relation 170659. Up to 11871 conditions per place. [2023-01-28 02:55:56,702 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 758 selfloop transitions, 338 changer transitions 0/1096 dead transitions. [2023-01-28 02:55:56,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1096 transitions, 40244 flow [2023-01-28 02:55:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:55:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:55:56,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 02:55:56,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 02:55:56,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 02:55:56,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 02:55:56,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:55:56,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 02:55:56,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 02:55:56,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:56,708 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:55:56,708 INFO L175 Difference]: Start difference. First operand has 452 places, 964 transitions, 35623 flow. Second operand 7 states and 2002 transitions. [2023-01-28 02:55:56,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1096 transitions, 40244 flow [2023-01-28 02:56:05,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1096 transitions, 39702 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-28 02:56:05,178 INFO L231 Difference]: Finished difference. Result has 456 places, 997 transitions, 37153 flow [2023-01-28 02:56:05,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=35081, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=629, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37153, PETRI_PLACES=456, PETRI_TRANSITIONS=997} [2023-01-28 02:56:05,179 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 426 predicate places. [2023-01-28 02:56:05,179 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 997 transitions, 37153 flow [2023-01-28 02:56:05,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:56:05,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:05,179 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:05,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-01-28 02:56:05,181 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:05,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:05,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1004924419, now seen corresponding path program 41 times [2023-01-28 02:56:05,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:05,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486066374] [2023-01-28 02:56:05,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:05,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:56:05,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:05,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486066374] [2023-01-28 02:56:05,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486066374] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:05,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:05,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:56:05,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327357291] [2023-01-28 02:56:05,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:05,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:56:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:05,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:56:05,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:56:05,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:56:05,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 997 transitions, 37153 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:56:05,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:05,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:56:05,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:13,330 INFO L130 PetriNetUnfolder]: 10039/18524 cut-off events. [2023-01-28 02:56:13,331 INFO L131 PetriNetUnfolder]: For 786608/786608 co-relation queries the response was YES. [2023-01-28 02:56:13,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172214 conditions, 18524 events. 10039/18524 cut-off events. For 786608/786608 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 163177 event pairs, 1386 based on Foata normal form. 12/18536 useless extension candidates. Maximal degree in co-relation 172055. Up to 12189 conditions per place. [2023-01-28 02:56:13,771 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 886 selfloop transitions, 212 changer transitions 3/1101 dead transitions. [2023-01-28 02:56:13,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1101 transitions, 41341 flow [2023-01-28 02:56:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:56:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:56:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1952 transitions. [2023-01-28 02:56:13,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3616824161571243 [2023-01-28 02:56:13,773 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1952 transitions. [2023-01-28 02:56:13,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1952 transitions. [2023-01-28 02:56:13,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:13,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1952 transitions. [2023-01-28 02:56:13,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 278.85714285714283) internal successors, (1952), 7 states have internal predecessors, (1952), 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) [2023-01-28 02:56:13,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:56:13,777 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:56:13,777 INFO L175 Difference]: Start difference. First operand has 456 places, 997 transitions, 37153 flow. Second operand 7 states and 1952 transitions. [2023-01-28 02:56:13,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1101 transitions, 41341 flow [2023-01-28 02:56:22,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 1101 transitions, 40896 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-01-28 02:56:22,304 INFO L231 Difference]: Finished difference. Result has 462 places, 1005 transitions, 37589 flow [2023-01-28 02:56:22,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=36713, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=997, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=37589, PETRI_PLACES=462, PETRI_TRANSITIONS=1005} [2023-01-28 02:56:22,305 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 432 predicate places. [2023-01-28 02:56:22,305 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1005 transitions, 37589 flow [2023-01-28 02:56:22,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:56:22,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:22,306 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:22,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-01-28 02:56:22,306 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:22,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:22,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1818762133, now seen corresponding path program 42 times [2023-01-28 02:56:22,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:22,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414593513] [2023-01-28 02:56:22,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:22,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:56:22,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:22,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414593513] [2023-01-28 02:56:22,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414593513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:22,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:22,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:56:22,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705058205] [2023-01-28 02:56:22,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:22,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:56:22,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:22,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:56:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:56:22,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:56:22,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1005 transitions, 37589 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:56:22,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:22,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:56:22,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:30,161 INFO L130 PetriNetUnfolder]: 10024/18463 cut-off events. [2023-01-28 02:56:30,161 INFO L131 PetriNetUnfolder]: For 801888/801888 co-relation queries the response was YES. [2023-01-28 02:56:30,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173433 conditions, 18463 events. 10024/18463 cut-off events. For 801888/801888 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 161210 event pairs, 2256 based on Foata normal form. 18/18481 useless extension candidates. Maximal degree in co-relation 173272. Up to 11823 conditions per place. [2023-01-28 02:56:30,598 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 767 selfloop transitions, 340 changer transitions 0/1107 dead transitions. [2023-01-28 02:56:30,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1107 transitions, 41291 flow [2023-01-28 02:56:30,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:56:30,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:56:30,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1960 transitions. [2023-01-28 02:56:30,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631647211413748 [2023-01-28 02:56:30,600 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1960 transitions. [2023-01-28 02:56:30,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1960 transitions. [2023-01-28 02:56:30,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:30,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1960 transitions. [2023-01-28 02:56:30,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.0) internal successors, (1960), 7 states have internal predecessors, (1960), 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) [2023-01-28 02:56:30,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:56:30,603 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:56:30,603 INFO L175 Difference]: Start difference. First operand has 462 places, 1005 transitions, 37589 flow. Second operand 7 states and 1960 transitions. [2023-01-28 02:56:30,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1107 transitions, 41291 flow [2023-01-28 02:56:39,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 1107 transitions, 40785 flow, removed 78 selfloop flow, removed 2 redundant places. [2023-01-28 02:56:39,627 INFO L231 Difference]: Finished difference. Result has 468 places, 1010 transitions, 38027 flow [2023-01-28 02:56:39,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37102, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38027, PETRI_PLACES=468, PETRI_TRANSITIONS=1010} [2023-01-28 02:56:39,628 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2023-01-28 02:56:39,628 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 1010 transitions, 38027 flow [2023-01-28 02:56:39,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:56:39,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:39,629 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:39,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-01-28 02:56:39,629 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:39,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:39,629 INFO L85 PathProgramCache]: Analyzing trace with hash 650218813, now seen corresponding path program 43 times [2023-01-28 02:56:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:39,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683526172] [2023-01-28 02:56:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:39,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:56:39,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:39,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683526172] [2023-01-28 02:56:39,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683526172] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:39,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:39,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:56:39,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096304138] [2023-01-28 02:56:39,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:56:39,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:39,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:56:39,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:56:39,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:56:39,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 1010 transitions, 38027 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:56:39,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:39,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:56:39,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:56:47,471 INFO L130 PetriNetUnfolder]: 9982/18314 cut-off events. [2023-01-28 02:56:47,471 INFO L131 PetriNetUnfolder]: For 807848/807848 co-relation queries the response was YES. [2023-01-28 02:56:47,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173147 conditions, 18314 events. 9982/18314 cut-off events. For 807848/807848 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158827 event pairs, 2238 based on Foata normal form. 18/18332 useless extension candidates. Maximal degree in co-relation 172984. Up to 11823 conditions per place. [2023-01-28 02:56:47,764 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 766 selfloop transitions, 337 changer transitions 0/1103 dead transitions. [2023-01-28 02:56:47,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 1103 transitions, 41393 flow [2023-01-28 02:56:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:56:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:56:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1957 transitions. [2023-01-28 02:56:47,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3626088567722809 [2023-01-28 02:56:47,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1957 transitions. [2023-01-28 02:56:47,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1957 transitions. [2023-01-28 02:56:47,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:56:47,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1957 transitions. [2023-01-28 02:56:47,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 279.57142857142856) internal successors, (1957), 7 states have internal predecessors, (1957), 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) [2023-01-28 02:56:47,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:56:47,769 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:56:47,769 INFO L175 Difference]: Start difference. First operand has 468 places, 1010 transitions, 38027 flow. Second operand 7 states and 1957 transitions. [2023-01-28 02:56:47,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 1103 transitions, 41393 flow [2023-01-28 02:56:57,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 1103 transitions, 40709 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-01-28 02:56:57,276 INFO L231 Difference]: Finished difference. Result has 472 places, 1010 transitions, 38183 flow [2023-01-28 02:56:57,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37315, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=336, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38183, PETRI_PLACES=472, PETRI_TRANSITIONS=1010} [2023-01-28 02:56:57,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2023-01-28 02:56:57,277 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1010 transitions, 38183 flow [2023-01-28 02:56:57,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 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) [2023-01-28 02:56:57,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:56:57,277 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:56:57,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-01-28 02:56:57,277 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:56:57,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:56:57,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1198212747, now seen corresponding path program 44 times [2023-01-28 02:56:57,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:56:57,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869017350] [2023-01-28 02:56:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:56:57,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:56:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:56:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:56:57,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:56:57,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869017350] [2023-01-28 02:56:57,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869017350] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:56:57,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:56:57,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:56:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327236774] [2023-01-28 02:56:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:56:57,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:56:57,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:56:57,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:56:57,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:56:57,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:56:57,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1010 transitions, 38183 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:56:57,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:56:57,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:56:57,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:05,625 INFO L130 PetriNetUnfolder]: 9977/18289 cut-off events. [2023-01-28 02:57:05,626 INFO L131 PetriNetUnfolder]: For 812731/812731 co-relation queries the response was YES. [2023-01-28 02:57:05,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173569 conditions, 18289 events. 9977/18289 cut-off events. For 812731/812731 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 158466 event pairs, 2494 based on Foata normal form. 4/18293 useless extension candidates. Maximal degree in co-relation 173404. Up to 8750 conditions per place. [2023-01-28 02:57:06,013 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 722 selfloop transitions, 357 changer transitions 0/1079 dead transitions. [2023-01-28 02:57:06,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1079 transitions, 41094 flow [2023-01-28 02:57:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:57:06,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:57:06,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 02:57:06,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 02:57:06,016 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 02:57:06,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 02:57:06,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:06,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 02:57:06,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 02:57:06,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:57:06,021 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:57:06,021 INFO L175 Difference]: Start difference. First operand has 472 places, 1010 transitions, 38183 flow. Second operand 7 states and 2002 transitions. [2023-01-28 02:57:06,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1079 transitions, 41094 flow [2023-01-28 02:57:16,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1079 transitions, 40599 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-01-28 02:57:16,158 INFO L231 Difference]: Finished difference. Result has 477 places, 1012 transitions, 38509 flow [2023-01-28 02:57:16,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37667, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=354, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=38509, PETRI_PLACES=477, PETRI_TRANSITIONS=1012} [2023-01-28 02:57:16,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2023-01-28 02:57:16,159 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1012 transitions, 38509 flow [2023-01-28 02:57:16,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:57:16,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:16,160 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:16,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-01-28 02:57:16,160 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:16,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash -816504591, now seen corresponding path program 45 times [2023-01-28 02:57:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:16,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381285826] [2023-01-28 02:57:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:16,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:57:16,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381285826] [2023-01-28 02:57:16,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381285826] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:16,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:16,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:57:16,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326073884] [2023-01-28 02:57:16,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:16,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:57:16,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:16,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:57:16,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:57:16,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:57:16,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1012 transitions, 38509 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:57:16,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:16,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:57:16,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:24,557 INFO L130 PetriNetUnfolder]: 10060/18384 cut-off events. [2023-01-28 02:57:24,557 INFO L131 PetriNetUnfolder]: For 846341/846341 co-relation queries the response was YES. [2023-01-28 02:57:24,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175417 conditions, 18384 events. 10060/18384 cut-off events. For 846341/846341 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 158664 event pairs, 2508 based on Foata normal form. 26/18410 useless extension candidates. Maximal degree in co-relation 175250. Up to 8770 conditions per place. [2023-01-28 02:57:24,973 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 392 changer transitions 0/1124 dead transitions. [2023-01-28 02:57:24,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 1124 transitions, 43331 flow [2023-01-28 02:57:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:57:24,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:57:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2004 transitions. [2023-01-28 02:57:24,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37131739855475265 [2023-01-28 02:57:24,975 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2004 transitions. [2023-01-28 02:57:24,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2004 transitions. [2023-01-28 02:57:24,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:24,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2004 transitions. [2023-01-28 02:57:24,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.2857142857143) internal successors, (2004), 7 states have internal predecessors, (2004), 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) [2023-01-28 02:57:24,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:57:24,980 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:57:24,981 INFO L175 Difference]: Start difference. First operand has 477 places, 1012 transitions, 38509 flow. Second operand 7 states and 2004 transitions. [2023-01-28 02:57:24,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 1124 transitions, 43331 flow [2023-01-28 02:57:35,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 1124 transitions, 42761 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-01-28 02:57:35,052 INFO L231 Difference]: Finished difference. Result has 483 places, 1048 transitions, 40439 flow [2023-01-28 02:57:35,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=37932, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40439, PETRI_PLACES=483, PETRI_TRANSITIONS=1048} [2023-01-28 02:57:35,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 453 predicate places. [2023-01-28 02:57:35,054 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 1048 transitions, 40439 flow [2023-01-28 02:57:35,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:57:35,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:35,054 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:35,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-01-28 02:57:35,054 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:35,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1876950500, now seen corresponding path program 45 times [2023-01-28 02:57:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813438652] [2023-01-28 02:57:35,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:35,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:57:35,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:35,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813438652] [2023-01-28 02:57:35,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813438652] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:35,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:35,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:57:35,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624573540] [2023-01-28 02:57:35,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:35,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:57:35,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:35,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:57:35,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:57:35,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:57:35,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 1048 transitions, 40439 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:57:35,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:35,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:57:35,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:57:43,423 INFO L130 PetriNetUnfolder]: 10016/18282 cut-off events. [2023-01-28 02:57:43,423 INFO L131 PetriNetUnfolder]: For 863424/863424 co-relation queries the response was YES. [2023-01-28 02:57:43,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176163 conditions, 18282 events. 10016/18282 cut-off events. For 863424/863424 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 157772 event pairs, 4057 based on Foata normal form. 16/18298 useless extension candidates. Maximal degree in co-relation 175993. Up to 13839 conditions per place. [2023-01-28 02:57:43,759 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 837 selfloop transitions, 269 changer transitions 0/1106 dead transitions. [2023-01-28 02:57:43,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 1106 transitions, 43118 flow [2023-01-28 02:57:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:57:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:57:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2010 transitions. [2023-01-28 02:57:43,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37242912729294053 [2023-01-28 02:57:43,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2010 transitions. [2023-01-28 02:57:43,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2010 transitions. [2023-01-28 02:57:43,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:57:43,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2010 transitions. [2023-01-28 02:57:43,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 287.14285714285717) internal successors, (2010), 7 states have internal predecessors, (2010), 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) [2023-01-28 02:57:43,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:57:43,766 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:57:43,766 INFO L175 Difference]: Start difference. First operand has 483 places, 1048 transitions, 40439 flow. Second operand 7 states and 2010 transitions. [2023-01-28 02:57:43,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 1106 transitions, 43118 flow [2023-01-28 02:57:54,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1106 transitions, 42762 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-01-28 02:57:54,588 INFO L231 Difference]: Finished difference. Result has 488 places, 1050 transitions, 40692 flow [2023-01-28 02:57:54,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40083, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40692, PETRI_PLACES=488, PETRI_TRANSITIONS=1050} [2023-01-28 02:57:54,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2023-01-28 02:57:54,591 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 1050 transitions, 40692 flow [2023-01-28 02:57:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:57:54,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:57:54,592 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:57:54,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-01-28 02:57:54,592 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:57:54,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:57:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1666416104, now seen corresponding path program 46 times [2023-01-28 02:57:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:57:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995683945] [2023-01-28 02:57:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:57:54,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:57:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:57:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:57:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:57:54,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995683945] [2023-01-28 02:57:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995683945] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:57:54,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:57:54,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:57:54,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122820650] [2023-01-28 02:57:54,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:57:54,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:57:54,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:57:54,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:57:54,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:57:54,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:57:54,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 1050 transitions, 40692 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:57:54,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:57:54,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:57:54,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:58:03,866 INFO L130 PetriNetUnfolder]: 10031/18343 cut-off events. [2023-01-28 02:58:03,867 INFO L131 PetriNetUnfolder]: For 865036/865036 co-relation queries the response was YES. [2023-01-28 02:58:04,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176480 conditions, 18343 events. 10031/18343 cut-off events. For 865036/865036 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 158794 event pairs, 3997 based on Foata normal form. 4/18347 useless extension candidates. Maximal degree in co-relation 176309. Up to 13839 conditions per place. [2023-01-28 02:58:04,147 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 874 selfloop transitions, 238 changer transitions 0/1112 dead transitions. [2023-01-28 02:58:04,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1112 transitions, 43649 flow [2023-01-28 02:58:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:58:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:58:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1998 transitions. [2023-01-28 02:58:04,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3702056698165648 [2023-01-28 02:58:04,149 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1998 transitions. [2023-01-28 02:58:04,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1998 transitions. [2023-01-28 02:58:04,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:58:04,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1998 transitions. [2023-01-28 02:58:04,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 285.42857142857144) internal successors, (1998), 7 states have internal predecessors, (1998), 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) [2023-01-28 02:58:04,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:58:04,152 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:58:04,152 INFO L175 Difference]: Start difference. First operand has 488 places, 1050 transitions, 40692 flow. Second operand 7 states and 1998 transitions. [2023-01-28 02:58:04,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1112 transitions, 43649 flow [2023-01-28 02:58:14,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 1112 transitions, 43138 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 02:58:14,209 INFO L231 Difference]: Finished difference. Result has 493 places, 1055 transitions, 40918 flow [2023-01-28 02:58:14,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40189, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=814, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=40918, PETRI_PLACES=493, PETRI_TRANSITIONS=1055} [2023-01-28 02:58:14,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 463 predicate places. [2023-01-28 02:58:14,210 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 1055 transitions, 40918 flow [2023-01-28 02:58:14,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:58:14,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:58:14,210 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:58:14,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2023-01-28 02:58:14,210 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:58:14,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:58:14,211 INFO L85 PathProgramCache]: Analyzing trace with hash -799839490, now seen corresponding path program 47 times [2023-01-28 02:58:14,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:58:14,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703339878] [2023-01-28 02:58:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:58:14,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:58:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:58:14,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:58:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:58:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703339878] [2023-01-28 02:58:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703339878] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:58:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:58:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:58:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145563475] [2023-01-28 02:58:14,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:58:14,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:58:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:58:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:58:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:58:14,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 771 [2023-01-28 02:58:14,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 1055 transitions, 40918 flow. Second operand has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:58:14,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:58:14,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 771 [2023-01-28 02:58:14,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:58:22,637 INFO L130 PetriNetUnfolder]: 10029/18331 cut-off events. [2023-01-28 02:58:22,638 INFO L131 PetriNetUnfolder]: For 871630/871630 co-relation queries the response was YES. [2023-01-28 02:58:22,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177602 conditions, 18331 events. 10029/18331 cut-off events. For 871630/871630 co-relation queries the response was YES. Maximal size of possible extension queue 1208. Compared 159365 event pairs, 1802 based on Foata normal form. 4/18335 useless extension candidates. Maximal degree in co-relation 177428. Up to 6972 conditions per place. [2023-01-28 02:58:23,043 INFO L137 encePairwiseOnDemand]: 762/771 looper letters, 842 selfloop transitions, 315 changer transitions 1/1158 dead transitions. [2023-01-28 02:58:23,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 1158 transitions, 44653 flow [2023-01-28 02:58:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 02:58:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 02:58:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2509 transitions. [2023-01-28 02:58:23,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3615794783109958 [2023-01-28 02:58:23,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2509 transitions. [2023-01-28 02:58:23,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2509 transitions. [2023-01-28 02:58:23,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:58:23,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2509 transitions. [2023-01-28 02:58:23,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 278.77777777777777) internal successors, (2509), 9 states have internal predecessors, (2509), 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) [2023-01-28 02:58:23,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:58:23,050 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 771.0) internal successors, (7710), 10 states have internal predecessors, (7710), 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) [2023-01-28 02:58:23,050 INFO L175 Difference]: Start difference. First operand has 493 places, 1055 transitions, 40918 flow. Second operand 9 states and 2509 transitions. [2023-01-28 02:58:23,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 1158 transitions, 44653 flow [2023-01-28 02:58:34,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 1158 transitions, 44435 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-01-28 02:58:34,450 INFO L231 Difference]: Finished difference. Result has 502 places, 1069 transitions, 41977 flow [2023-01-28 02:58:34,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40708, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=300, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41977, PETRI_PLACES=502, PETRI_TRANSITIONS=1069} [2023-01-28 02:58:34,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 472 predicate places. [2023-01-28 02:58:34,451 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 1069 transitions, 41977 flow [2023-01-28 02:58:34,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 271.14285714285717) internal successors, (1898), 7 states have internal predecessors, (1898), 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) [2023-01-28 02:58:34,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:58:34,452 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:58:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2023-01-28 02:58:34,452 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:58:34,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:58:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1456307273, now seen corresponding path program 46 times [2023-01-28 02:58:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:58:34,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692489152] [2023-01-28 02:58:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:58:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:58:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:58:34,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:58:34,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:58:34,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692489152] [2023-01-28 02:58:34,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692489152] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:58:34,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:58:34,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-01-28 02:58:34,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175839293] [2023-01-28 02:58:34,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:58:34,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 02:58:34,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:58:34,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 02:58:34,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-01-28 02:58:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:58:34,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 1069 transitions, 41977 flow. Second operand has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:58:34,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:58:34,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:58:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:58:43,250 INFO L130 PetriNetUnfolder]: 10013/18289 cut-off events. [2023-01-28 02:58:43,250 INFO L131 PetriNetUnfolder]: For 891965/891965 co-relation queries the response was YES. [2023-01-28 02:58:43,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180532 conditions, 18289 events. 10013/18289 cut-off events. For 891965/891965 co-relation queries the response was YES. Maximal size of possible extension queue 1204. Compared 157953 event pairs, 2500 based on Foata normal form. 10/18299 useless extension candidates. Maximal degree in co-relation 180356. Up to 8817 conditions per place. [2023-01-28 02:58:43,569 INFO L137 encePairwiseOnDemand]: 763/771 looper letters, 732 selfloop transitions, 408 changer transitions 0/1140 dead transitions. [2023-01-28 02:58:43,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 1140 transitions, 45212 flow [2023-01-28 02:58:43,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:58:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 02:58:43,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2002 transitions. [2023-01-28 02:58:43,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37094682230869 [2023-01-28 02:58:43,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2002 transitions. [2023-01-28 02:58:43,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2002 transitions. [2023-01-28 02:58:43,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:58:43,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2002 transitions. [2023-01-28 02:58:43,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 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) [2023-01-28 02:58:43,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:58:43,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 771.0) internal successors, (6168), 8 states have internal predecessors, (6168), 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) [2023-01-28 02:58:43,575 INFO L175 Difference]: Start difference. First operand has 502 places, 1069 transitions, 41977 flow. Second operand 7 states and 2002 transitions. [2023-01-28 02:58:43,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 1140 transitions, 45212 flow [2023-01-28 02:58:54,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 1140 transitions, 44105 flow, removed 41 selfloop flow, removed 12 redundant places. [2023-01-28 02:58:54,578 INFO L231 Difference]: Finished difference. Result has 497 places, 1075 transitions, 42023 flow [2023-01-28 02:58:54,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=771, PETRI_DIFFERENCE_MINUEND_FLOW=40790, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1066, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=399, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=42023, PETRI_PLACES=497, PETRI_TRANSITIONS=1075} [2023-01-28 02:58:54,580 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2023-01-28 02:58:54,580 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1075 transitions, 42023 flow [2023-01-28 02:58:54,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 276.75) internal successors, (2214), 8 states have internal predecessors, (2214), 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) [2023-01-28 02:58:54,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:58:54,581 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:58:54,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2023-01-28 02:58:54,581 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 02:58:54,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:58:54,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1523969853, now seen corresponding path program 47 times [2023-01-28 02:58:54,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:58:54,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157162311] [2023-01-28 02:58:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:58:54,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:58:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:58:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-01-28 02:58:54,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:58:54,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157162311] [2023-01-28 02:58:54,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157162311] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:58:54,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:58:54,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 02:58:54,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305605351] [2023-01-28 02:58:54,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:58:54,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 02:58:54,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:58:54,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 02:58:54,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-28 02:58:54,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 771 [2023-01-28 02:58:54,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1075 transitions, 42023 flow. Second operand has 7 states, 7 states have (on average 277.14285714285717) internal successors, (1940), 7 states have internal predecessors, (1940), 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) [2023-01-28 02:58:54,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:58:54,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 771 [2023-01-28 02:58:54,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-01-28 02:58:58,021 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:58:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 02:58:58,108 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 02:58:58,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2023-01-28 02:58:58,108 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 274/771 universal loopers) in iteration 104,while PetriNetUnfolder was constructing finite prefix that currently has 83251 conditions, 7252 events (4690/7251 cut-off events. For 454722/454722 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 51657 event pairs, 435 based on Foata normal form. 6/8372 useless extension candidates. Maximal degree in co-relation 83080. Up to 4217 conditions per place.). [2023-01-28 02:58:58,109 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 02:58:58,109 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 02:58:58,109 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 02:58:58,110 INFO L445 BasicCegarLoop]: Path program histogram: [47, 47, 9, 1] [2023-01-28 02:58:58,111 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:58:58,111 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:58:58,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:58:58 BasicIcfg [2023-01-28 02:58:58,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:58:58,113 INFO L158 Benchmark]: Toolchain (without parser) took 807808.14ms. Allocated memory was 352.3MB in the beginning and 10.5GB in the end (delta: 10.2GB). Free memory was 291.9MB in the beginning and 9.2GB in the end (delta: -8.9GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-01-28 02:58:58,113 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory is still 301.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:58:58,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.99ms. Allocated memory is still 352.3MB. Free memory was 291.6MB in the beginning and 278.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 02:58:58,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.35ms. Allocated memory is still 352.3MB. Free memory was 278.8MB in the beginning and 275.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:58:58,114 INFO L158 Benchmark]: Boogie Preprocessor took 33.63ms. Allocated memory is still 352.3MB. Free memory was 275.9MB in the beginning and 273.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:58:58,114 INFO L158 Benchmark]: RCFGBuilder took 488.27ms. Allocated memory was 352.3MB in the beginning and 507.5MB in the end (delta: 155.2MB). Free memory was 273.8MB in the beginning and 455.6MB in the end (delta: -181.8MB). Peak memory consumption was 13.4MB. Max. memory is 16.0GB. [2023-01-28 02:58:58,114 INFO L158 Benchmark]: TraceAbstraction took 807055.02ms. Allocated memory was 507.5MB in the beginning and 10.5GB in the end (delta: 10.0GB). Free memory was 455.2MB in the beginning and 9.2GB in the end (delta: -8.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. [2023-01-28 02:58:58,115 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory is still 301.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 188.99ms. Allocated memory is still 352.3MB. Free memory was 291.6MB in the beginning and 278.8MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.35ms. Allocated memory is still 352.3MB. Free memory was 278.8MB in the beginning and 275.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.63ms. Allocated memory is still 352.3MB. Free memory was 275.9MB in the beginning and 273.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 488.27ms. Allocated memory was 352.3MB in the beginning and 507.5MB in the end (delta: 155.2MB). Free memory was 273.8MB in the beginning and 455.6MB in the end (delta: -181.8MB). Peak memory consumption was 13.4MB. Max. memory is 16.0GB. * TraceAbstraction took 807055.02ms. Allocated memory was 507.5MB in the beginning and 10.5GB in the end (delta: 10.0GB). Free memory was 455.2MB in the beginning and 9.2GB in the end (delta: -8.7GB). Peak memory consumption was 2.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 331 PlacesBefore, 30 PlacesAfterwards, 347 TransitionsBefore, 24 TransitionsAfterwards, 28350 CoEnabledTransitionPairs, 8 FixpointIterations, 124 TrivialSequentialCompositions, 178 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 73 ConcurrentYvCompositions, 22 ChoiceCompositions, 411 TotalNumberOfCompositions, 26332 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25648, independent: 25626, independent conditional: 0, independent unconditional: 25626, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 17150, independent: 17137, independent conditional: 0, independent unconditional: 17137, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25648, independent: 8489, independent conditional: 0, independent unconditional: 8489, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 17150, unknown conditional: 0, unknown unconditional: 17150] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 49, Positive conditional cache size: 0, Positive unconditional cache size: 49, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 274/771 universal loopers) in iteration 104,while PetriNetUnfolder was constructing finite prefix that currently has 83251 conditions, 7252 events (4690/7251 cut-off events. For 454722/454722 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 51657 event pairs, 435 based on Foata normal form. 6/8372 useless extension candidates. Maximal degree in co-relation 83080. Up to 4217 conditions per place.). - TimeoutResultAtElement [Line: 136]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 274/771 universal loopers) in iteration 104,while PetriNetUnfolder was constructing finite prefix that currently has 83251 conditions, 7252 events (4690/7251 cut-off events. For 454722/454722 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 51657 event pairs, 435 based on Foata normal form. 6/8372 useless extension candidates. Maximal degree in co-relation 83080. Up to 4217 conditions per place.). - TimeoutResultAtElement [Line: 134]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 274/771 universal loopers) in iteration 104,while PetriNetUnfolder was constructing finite prefix that currently has 83251 conditions, 7252 events (4690/7251 cut-off events. For 454722/454722 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 51657 event pairs, 435 based on Foata normal form. 6/8372 useless extension candidates. Maximal degree in co-relation 83080. Up to 4217 conditions per place.). - TimeoutResultAtElement [Line: 135]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 274/771 universal loopers) in iteration 104,while PetriNetUnfolder was constructing finite prefix that currently has 83251 conditions, 7252 events (4690/7251 cut-off events. For 454722/454722 co-relation queries the response was YES. Maximal size of possible extension queue 1206. Compared 51657 event pairs, 435 based on Foata normal form. 6/8372 useless extension candidates. Maximal degree in co-relation 83080. Up to 4217 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 509 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 806.9s, OverallIterations: 104, TraceHistogramMax: 3, PathProgramHistogramMax: 47, EmptinessCheckTime: 0.0s, AutomataDifference: 765.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6042 SdHoareTripleChecker+Valid, 14.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6042 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 12.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24991 IncrementalHoareTripleChecker+Invalid, 25153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 0 mSDtfsCounter, 24991 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1458 GetRequests, 644 SyntacticMatches, 1 SemanticMatches, 813 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 11.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42023occurred in iteration=103, InterpolantAutomatonStates: 733, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 26.9s InterpolantComputationTime, 2598 NumberOfCodeBlocks, 2598 NumberOfCodeBlocksAsserted, 116 NumberOfCheckSat, 2601 ConstructedInterpolants, 0 QuantifiedInterpolants, 17091 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1258 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 114 InterpolantComputations, 102 PerfectInterpolantSequences, 753/765 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown