/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 20:22:50,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 20:22:50,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 20:22:50,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 20:22:50,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 20:22:50,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 20:22:50,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 20:22:50,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 20:22:50,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 20:22:50,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 20:22:50,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 20:22:50,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 20:22:50,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 20:22:50,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 20:22:50,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 20:22:50,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 20:22:50,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 20:22:50,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 20:22:50,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 20:22:50,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 20:22:50,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 20:22:50,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 20:22:50,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 20:22:50,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 20:22:50,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 20:22:50,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 20:22:50,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 20:22:50,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 20:22:50,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 20:22:50,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 20:22:50,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 20:22:50,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 20:22:50,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 20:22:50,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 20:22:50,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 20:22:50,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 20:22:50,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 20:22:50,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 20:22:50,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 20:22:50,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 20:22:50,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 20:22:50,587 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 [2023-01-27 20:22:50,610 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 20:22:50,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 20:22:50,611 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 20:22:50,611 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 20:22:50,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 20:22:50,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 20:22:50,612 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 20:22:50,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 20:22:50,612 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 20:22:50,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 20:22:50,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 20:22:50,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 20:22:50,613 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:22:50,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 20:22:50,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 20:22:50,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 20:22:50,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 20:22:50,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 20:22:50,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 20:22:50,820 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 20:22:50,820 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 20:22:50,821 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-01-27 20:22:51,845 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 20:22:52,053 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 20:22:52,054 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-01-27 20:22:52,066 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fbb235b/13ef71405687441bac71b4b43eb76b24/FLAG8269fa465 [2023-01-27 20:22:52,435 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fbb235b/13ef71405687441bac71b4b43eb76b24 [2023-01-27 20:22:52,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 20:22:52,439 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 20:22:52,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 20:22:52,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 20:22:52,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 20:22:52,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab3231a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52, skipping insertion in model container [2023-01-27 20:22:52,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 20:22:52,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 20:22:52,614 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-nzb-file-trans.wvr.c[6450,6463] [2023-01-27 20:22:52,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:22:52,626 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 20:22:52,652 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-nzb-file-trans.wvr.c[6450,6463] [2023-01-27 20:22:52,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 20:22:52,664 INFO L208 MainTranslator]: Completed translation [2023-01-27 20:22:52,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52 WrapperNode [2023-01-27 20:22:52,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 20:22:52,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 20:22:52,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 20:22:52,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 20:22:52,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,700 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 601 [2023-01-27 20:22:52,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 20:22:52,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 20:22:52,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 20:22:52,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 20:22:52,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,728 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 20:22:52,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 20:22:52,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 20:22:52,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 20:22:52,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (1/1) ... [2023-01-27 20:22:52,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 20:22:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:22:52,771 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) [2023-01-27 20:22:52,776 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 [2023-01-27 20:22:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 20:22:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 20:22:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 20:22:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 20:22:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 20:22:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 20:22:52,804 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 20:22:52,804 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 20:22:52,805 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 20:22:52,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 20:22:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 20:22:52,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 20:22:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 20:22:52,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 20:22:52,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 20:22:52,808 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 20:22:52,983 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 20:22:52,987 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 20:22:53,546 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 20:22:53,554 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 20:22:53,554 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-01-27 20:22:53,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:22:53 BoogieIcfgContainer [2023-01-27 20:22:53,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 20:22:53,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 20:22:53,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 20:22:53,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 20:22:53,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 08:22:52" (1/3) ... [2023-01-27 20:22:53,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d505a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:22:53, skipping insertion in model container [2023-01-27 20:22:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 08:22:52" (2/3) ... [2023-01-27 20:22:53,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d505a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 08:22:53, skipping insertion in model container [2023-01-27 20:22:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 08:22:53" (3/3) ... [2023-01-27 20:22:53,561 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-01-27 20:22:53,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 20:22:53,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 20:22:53,572 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 20:22:53,678 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-27 20:22:53,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 717 transitions, 1458 flow [2023-01-27 20:22:53,908 INFO L130 PetriNetUnfolder]: 73/714 cut-off events. [2023-01-27 20:22:53,908 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:22:53,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 714 events. 73/714 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2388 event pairs, 0 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-27 20:22:53,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 654 places, 717 transitions, 1458 flow [2023-01-27 20:22:53,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 704 transitions, 1426 flow [2023-01-27 20:22:53,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 20:22:53,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-27 20:22:53,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 704 transitions, 1426 flow [2023-01-27 20:22:53,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 704 transitions, 1426 flow [2023-01-27 20:22:54,072 INFO L130 PetriNetUnfolder]: 73/704 cut-off events. [2023-01-27 20:22:54,072 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:22:54,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 704 events. 73/704 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2389 event pairs, 0 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 532. Up to 2 conditions per place. [2023-01-27 20:22:54,121 INFO L119 LiptonReduction]: Number of co-enabled transitions 157248 [2023-01-27 20:23:16,210 INFO L134 LiptonReduction]: Checked pairs total: 150057 [2023-01-27 20:23:16,210 INFO L136 LiptonReduction]: Total number of compositions: 891 [2023-01-27 20:23:16,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 20:23:16,227 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;@14d2284a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 20:23:16,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 20:23:16,233 INFO L130 PetriNetUnfolder]: 12/47 cut-off events. [2023-01-27 20:23:16,233 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 20:23:16,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:16,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:16,235 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)] === [2023-01-27 20:23:16,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1427696023, now seen corresponding path program 1 times [2023-01-27 20:23:16,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:16,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053830813] [2023-01-27 20:23:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:16,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 20:23:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053830813] [2023-01-27 20:23:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053830813] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:16,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:16,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:23:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208197582] [2023-01-27 20:23:16,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:16,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:23:16,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:23:16,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:23:16,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-27 20:23:16,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:16,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:16,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-27 20:23:16,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:17,118 INFO L130 PetriNetUnfolder]: 2608/3503 cut-off events. [2023-01-27 20:23:17,119 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-01-27 20:23:17,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 3503 events. 2608/3503 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12504 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 6748. Up to 3501 conditions per place. [2023-01-27 20:23:17,132 INFO L137 encePairwiseOnDemand]: 1600/1608 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-01-27 20:23:17,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 218 flow [2023-01-27 20:23:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:23:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:23:17,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1983 transitions. [2023-01-27 20:23:17,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110696517412935 [2023-01-27 20:23:17,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1983 transitions. [2023-01-27 20:23:17,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1983 transitions. [2023-01-27 20:23:17,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:17,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1983 transitions. [2023-01-27 20:23:17,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 661.0) internal successors, (1983), 3 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:17,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:17,172 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:17,174 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 1983 transitions. [2023-01-27 20:23:17,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 218 flow [2023-01-27 20:23:17,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 206 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-27 20:23:17,181 INFO L231 Difference]: Finished difference. Result has 43 places, 50 transitions, 132 flow [2023-01-27 20:23:17,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=43, PETRI_TRANSITIONS=50} [2023-01-27 20:23:17,186 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-01-27 20:23:17,186 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 50 transitions, 132 flow [2023-01-27 20:23:17,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:17,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:17,188 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, 1] [2023-01-27 20:23:17,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 20:23:17,188 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)] === [2023-01-27 20:23:17,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:17,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2065041558, now seen corresponding path program 1 times [2023-01-27 20:23:17,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:17,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012045204] [2023-01-27 20:23:17,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:17,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:23:17,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:17,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012045204] [2023-01-27 20:23:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012045204] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:17,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320515198] [2023-01-27 20:23:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:17,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:17,325 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) [2023-01-27 20:23:17,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 20:23:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:17,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-01-27 20:23:17,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:23:17,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:23:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 20:23:17,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320515198] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:23:17,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:23:17,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-01-27 20:23:17,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659610561] [2023-01-27 20:23:17,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:23:17,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 20:23:17,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:17,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 20:23:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-01-27 20:23:17,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-27 20:23:17,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 50 transitions, 132 flow. Second operand has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:17,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:17,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-27 20:23:17,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:18,022 INFO L130 PetriNetUnfolder]: 2608/3512 cut-off events. [2023-01-27 20:23:18,022 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-01-27 20:23:18,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7161 conditions, 3512 events. 2608/3512 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12508 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7112. Up to 3501 conditions per place. [2023-01-27 20:23:18,034 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 44 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2023-01-27 20:23:18,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 59 transitions, 286 flow [2023-01-27 20:23:18,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 20:23:18,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 20:23:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3926 transitions. [2023-01-27 20:23:18,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40692371475953565 [2023-01-27 20:23:18,041 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3926 transitions. [2023-01-27 20:23:18,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3926 transitions. [2023-01-27 20:23:18,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:18,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3926 transitions. [2023-01-27 20:23:18,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 654.3333333333334) internal successors, (3926), 6 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:18,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:18,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1608.0) internal successors, (11256), 7 states have internal predecessors, (11256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:18,061 INFO L175 Difference]: Start difference. First operand has 43 places, 50 transitions, 132 flow. Second operand 6 states and 3926 transitions. [2023-01-27 20:23:18,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 59 transitions, 286 flow [2023-01-27 20:23:18,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 59 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:18,063 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 222 flow [2023-01-27 20:23:18,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-01-27 20:23:18,063 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-01-27 20:23:18,063 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 222 flow [2023-01-27 20:23:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 647.0) internal successors, (5176), 8 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:18,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:18,066 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:18,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 20:23:18,271 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 [2023-01-27 20:23:18,271 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)] === [2023-01-27 20:23:18,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash 773664469, now seen corresponding path program 2 times [2023-01-27 20:23:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011180837] [2023-01-27 20:23:18,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:18,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:23:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011180837] [2023-01-27 20:23:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011180837] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103167692] [2023-01-27 20:23:18,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:23:18,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:18,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:18,443 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) [2023-01-27 20:23:18,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 20:23:18,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-01-27 20:23:18,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:23:18,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:23:18,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:23:19,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:23:19,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103167692] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:19,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:23:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-01-27 20:23:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26501494] [2023-01-27 20:23:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:23:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:19,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:23:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:23:19,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:23:19,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 222 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:19,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:19,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:23:19,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:20,687 INFO L130 PetriNetUnfolder]: 2934/4017 cut-off events. [2023-01-27 20:23:20,687 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2023-01-27 20:23:20,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8213 conditions, 4017 events. 2934/4017 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15676 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8125. Up to 3431 conditions per place. [2023-01-27 20:23:20,703 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 96 selfloop transitions, 2 changer transitions 7/105 dead transitions. [2023-01-27 20:23:20,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 105 transitions, 536 flow [2023-01-27 20:23:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:23:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:23:20,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3169 transitions. [2023-01-27 20:23:20,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941542288557214 [2023-01-27 20:23:20,710 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3169 transitions. [2023-01-27 20:23:20,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3169 transitions. [2023-01-27 20:23:20,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:20,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3169 transitions. [2023-01-27 20:23:20,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 633.8) internal successors, (3169), 5 states have internal predecessors, (3169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:20,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:20,724 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:20,724 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 222 flow. Second operand 5 states and 3169 transitions. [2023-01-27 20:23:20,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 105 transitions, 536 flow [2023-01-27 20:23:20,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 105 transitions, 512 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:20,730 INFO L231 Difference]: Finished difference. Result has 56 places, 60 transitions, 213 flow [2023-01-27 20:23:20,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=56, PETRI_TRANSITIONS=60} [2023-01-27 20:23:20,731 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-01-27 20:23:20,731 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 60 transitions, 213 flow [2023-01-27 20:23:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:20,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:20,732 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:20,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-27 20:23:20,939 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,SelfDestructingSolverStorable2 [2023-01-27 20:23:20,939 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)] === [2023-01-27 20:23:20,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1680310845, now seen corresponding path program 3 times [2023-01-27 20:23:20,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:20,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884292390] [2023-01-27 20:23:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:20,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:23:21,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884292390] [2023-01-27 20:23:21,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884292390] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:21,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133451273] [2023-01-27 20:23:21,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 20:23:21,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:21,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:21,098 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) [2023-01-27 20:23:21,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 20:23:21,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-01-27 20:23:21,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:23:21,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:23:21,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-01-27 20:23:22,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 20:23:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133451273] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 20:23:22,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-01-27 20:23:22,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443300107] [2023-01-27 20:23:22,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:22,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:23:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:22,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:23:22,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-01-27 20:23:22,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:23:22,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 60 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:22,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:22,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:23:22,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:22,974 INFO L130 PetriNetUnfolder]: 3124/4357 cut-off events. [2023-01-27 20:23:22,974 INFO L131 PetriNetUnfolder]: For 701/701 co-relation queries the response was YES. [2023-01-27 20:23:22,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9403 conditions, 4357 events. 3124/4357 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18094 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9371. Up to 3869 conditions per place. [2023-01-27 20:23:22,990 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 100 selfloop transitions, 3 changer transitions 7/110 dead transitions. [2023-01-27 20:23:22,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 110 transitions, 555 flow [2023-01-27 20:23:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:23:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:23:22,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3173 transitions. [2023-01-27 20:23:22,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39465174129353237 [2023-01-27 20:23:22,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3173 transitions. [2023-01-27 20:23:22,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3173 transitions. [2023-01-27 20:23:22,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:22,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3173 transitions. [2023-01-27 20:23:23,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 634.6) internal successors, (3173), 5 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:23,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:23,009 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:23,009 INFO L175 Difference]: Start difference. First operand has 56 places, 60 transitions, 213 flow. Second operand 5 states and 3173 transitions. [2023-01-27 20:23:23,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 110 transitions, 555 flow [2023-01-27 20:23:23,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 110 transitions, 546 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-01-27 20:23:23,012 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 230 flow [2023-01-27 20:23:23,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-01-27 20:23:23,012 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-01-27 20:23:23,013 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 230 flow [2023-01-27 20:23:23,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:23,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:23,014 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:23,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 20:23:23,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:23,219 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)] === [2023-01-27 20:23:23,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:23,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1405257897, now seen corresponding path program 4 times [2023-01-27 20:23:23,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:23,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751792995] [2023-01-27 20:23:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:23,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:23,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:23:23,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:23,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751792995] [2023-01-27 20:23:23,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751792995] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:23,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154029484] [2023-01-27 20:23:23,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 20:23:23,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:23,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:23,337 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) [2023-01-27 20:23:23,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 20:23:23,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 20:23:23,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:23:23,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 20:23:23,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:23:23,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:23:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-01-27 20:23:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154029484] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:23:23,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:23:23,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-27 20:23:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210537317] [2023-01-27 20:23:23,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:23:23,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 20:23:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 20:23:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-01-27 20:23:23,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1608 [2023-01-27 20:23:23,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 230 flow. Second operand has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:23,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:23,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1608 [2023-01-27 20:23:23,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:24,173 INFO L130 PetriNetUnfolder]: 3123/4352 cut-off events. [2023-01-27 20:23:24,174 INFO L131 PetriNetUnfolder]: For 1787/1787 co-relation queries the response was YES. [2023-01-27 20:23:24,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9913 conditions, 4352 events. 3123/4352 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17812 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 9879. Up to 4338 conditions per place. [2023-01-27 20:23:24,194 INFO L137 encePairwiseOnDemand]: 1601/1608 looper letters, 46 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2023-01-27 20:23:24,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 376 flow [2023-01-27 20:23:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 20:23:24,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 20:23:24,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4566 transitions. [2023-01-27 20:23:24,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4056503198294243 [2023-01-27 20:23:24,202 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4566 transitions. [2023-01-27 20:23:24,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4566 transitions. [2023-01-27 20:23:24,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:24,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4566 transitions. [2023-01-27 20:23:24,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 652.2857142857143) internal successors, (4566), 7 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:24,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:24,219 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1608.0) internal successors, (12864), 8 states have internal predecessors, (12864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:24,219 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 230 flow. Second operand 7 states and 4566 transitions. [2023-01-27 20:23:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 376 flow [2023-01-27 20:23:24,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 370 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:23:24,223 INFO L231 Difference]: Finished difference. Result has 64 places, 64 transitions, 292 flow [2023-01-27 20:23:24,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=292, PETRI_PLACES=64, PETRI_TRANSITIONS=64} [2023-01-27 20:23:24,225 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-01-27 20:23:24,225 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 64 transitions, 292 flow [2023-01-27 20:23:24,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 645.5384615384615) internal successors, (8392), 13 states have internal predecessors, (8392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:24,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:24,227 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:24,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 20:23:24,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:24,433 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)] === [2023-01-27 20:23:24,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash -472303414, now seen corresponding path program 5 times [2023-01-27 20:23:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:24,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127652717] [2023-01-27 20:23:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:25,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:25,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127652717] [2023-01-27 20:23:25,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127652717] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:25,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:25,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:23:25,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002115083] [2023-01-27 20:23:25,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:25,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:23:25,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:25,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:23:25,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:23:25,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:23:25,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 64 transitions, 292 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:25,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:25,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:23:25,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:26,016 INFO L130 PetriNetUnfolder]: 3772/5412 cut-off events. [2023-01-27 20:23:26,016 INFO L131 PetriNetUnfolder]: For 1184/1184 co-relation queries the response was YES. [2023-01-27 20:23:26,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11895 conditions, 5412 events. 3772/5412 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25238 event pairs, 2135 based on Foata normal form. 1/4567 useless extension candidates. Maximal degree in co-relation 11782. Up to 4014 conditions per place. [2023-01-27 20:23:26,034 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 121 selfloop transitions, 14 changer transitions 4/139 dead transitions. [2023-01-27 20:23:26,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 139 transitions, 751 flow [2023-01-27 20:23:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:23:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:23:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3197 transitions. [2023-01-27 20:23:26,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.397636815920398 [2023-01-27 20:23:26,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3197 transitions. [2023-01-27 20:23:26,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3197 transitions. [2023-01-27 20:23:26,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:26,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3197 transitions. [2023-01-27 20:23:26,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 639.4) internal successors, (3197), 5 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:26,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:26,055 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:26,055 INFO L175 Difference]: Start difference. First operand has 64 places, 64 transitions, 292 flow. Second operand 5 states and 3197 transitions. [2023-01-27 20:23:26,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 139 transitions, 751 flow [2023-01-27 20:23:26,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 139 transitions, 715 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-01-27 20:23:26,058 INFO L231 Difference]: Finished difference. Result has 67 places, 76 transitions, 372 flow [2023-01-27 20:23:26,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=67, PETRI_TRANSITIONS=76} [2023-01-27 20:23:26,058 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-01-27 20:23:26,059 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 76 transitions, 372 flow [2023-01-27 20:23:26,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:26,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:26,059 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 20:23:26,060 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)] === [2023-01-27 20:23:26,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:26,060 INFO L85 PathProgramCache]: Analyzing trace with hash 952440716, now seen corresponding path program 6 times [2023-01-27 20:23:26,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:26,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148290985] [2023-01-27 20:23:26,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:26,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148290985] [2023-01-27 20:23:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148290985] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:23:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864914960] [2023-01-27 20:23:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:23:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:23:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:23:26,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:23:26,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 76 transitions, 372 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:26,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:26,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:23:26,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:28,001 INFO L130 PetriNetUnfolder]: 7026/9920 cut-off events. [2023-01-27 20:23:28,002 INFO L131 PetriNetUnfolder]: For 6866/6866 co-relation queries the response was YES. [2023-01-27 20:23:28,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24933 conditions, 9920 events. 7026/9920 cut-off events. For 6866/6866 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 49525 event pairs, 1967 based on Foata normal form. 1/8697 useless extension candidates. Maximal degree in co-relation 24834. Up to 4768 conditions per place. [2023-01-27 20:23:28,044 INFO L137 encePairwiseOnDemand]: 1593/1608 looper letters, 127 selfloop transitions, 43 changer transitions 3/173 dead transitions. [2023-01-27 20:23:28,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 173 transitions, 1042 flow [2023-01-27 20:23:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:23:28,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:23:28,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3218 transitions. [2023-01-27 20:23:28,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002487562189055 [2023-01-27 20:23:28,050 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3218 transitions. [2023-01-27 20:23:28,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3218 transitions. [2023-01-27 20:23:28,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:28,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3218 transitions. [2023-01-27 20:23:28,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 643.6) internal successors, (3218), 5 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,062 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,062 INFO L175 Difference]: Start difference. First operand has 67 places, 76 transitions, 372 flow. Second operand 5 states and 3218 transitions. [2023-01-27 20:23:28,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 173 transitions, 1042 flow [2023-01-27 20:23:28,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 173 transitions, 1031 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:28,071 INFO L231 Difference]: Finished difference. Result has 73 places, 106 transitions, 711 flow [2023-01-27 20:23:28,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=711, PETRI_PLACES=73, PETRI_TRANSITIONS=106} [2023-01-27 20:23:28,071 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-01-27 20:23:28,071 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 106 transitions, 711 flow [2023-01-27 20:23:28,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:28,072 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:28,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 20:23:28,072 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)] === [2023-01-27 20:23:28,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:28,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1010676078, now seen corresponding path program 7 times [2023-01-27 20:23:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:28,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881644992] [2023-01-27 20:23:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:28,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881644992] [2023-01-27 20:23:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881644992] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:28,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:23:28,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901561144] [2023-01-27 20:23:28,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:28,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:23:28,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:28,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:23:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:23:28,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:23:28,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 106 transitions, 711 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:28,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:28,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:23:28,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:29,996 INFO L130 PetriNetUnfolder]: 7335/10386 cut-off events. [2023-01-27 20:23:29,996 INFO L131 PetriNetUnfolder]: For 16920/16920 co-relation queries the response was YES. [2023-01-27 20:23:30,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31791 conditions, 10386 events. 7335/10386 cut-off events. For 16920/16920 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 52628 event pairs, 3757 based on Foata normal form. 1/9053 useless extension candidates. Maximal degree in co-relation 31689. Up to 8786 conditions per place. [2023-01-27 20:23:30,045 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 167 selfloop transitions, 19 changer transitions 3/189 dead transitions. [2023-01-27 20:23:30,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 189 transitions, 1471 flow [2023-01-27 20:23:30,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:23:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:23:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3191 transitions. [2023-01-27 20:23:30,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968905472636816 [2023-01-27 20:23:30,051 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3191 transitions. [2023-01-27 20:23:30,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3191 transitions. [2023-01-27 20:23:30,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:30,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3191 transitions. [2023-01-27 20:23:30,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 638.2) internal successors, (3191), 5 states have internal predecessors, (3191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:30,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:30,063 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:30,063 INFO L175 Difference]: Start difference. First operand has 73 places, 106 transitions, 711 flow. Second operand 5 states and 3191 transitions. [2023-01-27 20:23:30,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 189 transitions, 1471 flow [2023-01-27 20:23:30,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 189 transitions, 1453 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-01-27 20:23:30,094 INFO L231 Difference]: Finished difference. Result has 80 places, 122 transitions, 904 flow [2023-01-27 20:23:30,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=904, PETRI_PLACES=80, PETRI_TRANSITIONS=122} [2023-01-27 20:23:30,094 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2023-01-27 20:23:30,094 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 122 transitions, 904 flow [2023-01-27 20:23:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:30,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:30,095 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:30,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 20:23:30,095 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)] === [2023-01-27 20:23:30,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1354860510, now seen corresponding path program 8 times [2023-01-27 20:23:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084172573] [2023-01-27 20:23:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:30,609 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:30,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:30,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084172573] [2023-01-27 20:23:30,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084172573] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:30,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:30,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:23:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828669115] [2023-01-27 20:23:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:30,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:23:30,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:23:30,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:23:30,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1608 [2023-01-27 20:23:30,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 122 transitions, 904 flow. Second operand has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:30,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:30,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1608 [2023-01-27 20:23:30,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:32,343 INFO L130 PetriNetUnfolder]: 7800/11126 cut-off events. [2023-01-27 20:23:32,343 INFO L131 PetriNetUnfolder]: For 25716/25716 co-relation queries the response was YES. [2023-01-27 20:23:32,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38905 conditions, 11126 events. 7800/11126 cut-off events. For 25716/25716 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 57874 event pairs, 3450 based on Foata normal form. 1/9741 useless extension candidates. Maximal degree in co-relation 38799. Up to 8455 conditions per place. [2023-01-27 20:23:32,392 INFO L137 encePairwiseOnDemand]: 1596/1608 looper letters, 174 selfloop transitions, 40 changer transitions 4/218 dead transitions. [2023-01-27 20:23:32,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 218 transitions, 1838 flow [2023-01-27 20:23:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:23:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:23:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3206 transitions. [2023-01-27 20:23:32,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39875621890547264 [2023-01-27 20:23:32,397 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3206 transitions. [2023-01-27 20:23:32,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3206 transitions. [2023-01-27 20:23:32,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:32,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3206 transitions. [2023-01-27 20:23:32,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 641.2) internal successors, (3206), 5 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:32,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:32,407 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:32,407 INFO L175 Difference]: Start difference. First operand has 80 places, 122 transitions, 904 flow. Second operand 5 states and 3206 transitions. [2023-01-27 20:23:32,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 218 transitions, 1838 flow [2023-01-27 20:23:32,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 218 transitions, 1816 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:32,470 INFO L231 Difference]: Finished difference. Result has 86 places, 145 transitions, 1288 flow [2023-01-27 20:23:32,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1288, PETRI_PLACES=86, PETRI_TRANSITIONS=145} [2023-01-27 20:23:32,470 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2023-01-27 20:23:32,470 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 145 transitions, 1288 flow [2023-01-27 20:23:32,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 619.4) internal successors, (3097), 5 states have internal predecessors, (3097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:32,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:32,471 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:32,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 20:23:32,471 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)] === [2023-01-27 20:23:32,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:32,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2050180737, now seen corresponding path program 1 times [2023-01-27 20:23:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:32,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580801553] [2023-01-27 20:23:32,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:32,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:32,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:32,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580801553] [2023-01-27 20:23:32,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580801553] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:32,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:32,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:23:32,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150271010] [2023-01-27 20:23:32,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:32,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:23:32,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:23:32,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:23:32,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-27 20:23:32,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 145 transitions, 1288 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:32,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:32,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-27 20:23:32,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:34,432 INFO L130 PetriNetUnfolder]: 9909/14036 cut-off events. [2023-01-27 20:23:34,433 INFO L131 PetriNetUnfolder]: For 48456/48456 co-relation queries the response was YES. [2023-01-27 20:23:34,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51285 conditions, 14036 events. 9909/14036 cut-off events. For 48456/48456 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 73262 event pairs, 4598 based on Foata normal form. 206/12412 useless extension candidates. Maximal degree in co-relation 51176. Up to 10987 conditions per place. [2023-01-27 20:23:34,506 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 192 selfloop transitions, 6 changer transitions 0/198 dead transitions. [2023-01-27 20:23:34,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 198 transitions, 2083 flow [2023-01-27 20:23:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:23:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:23:34,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2006 transitions. [2023-01-27 20:23:34,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158374792703151 [2023-01-27 20:23:34,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2006 transitions. [2023-01-27 20:23:34,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2006 transitions. [2023-01-27 20:23:34,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:34,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2006 transitions. [2023-01-27 20:23:34,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 668.6666666666666) internal successors, (2006), 3 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) [2023-01-27 20:23:34,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:34,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:34,517 INFO L175 Difference]: Start difference. First operand has 86 places, 145 transitions, 1288 flow. Second operand 3 states and 2006 transitions. [2023-01-27 20:23:34,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 198 transitions, 2083 flow [2023-01-27 20:23:34,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 198 transitions, 2063 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:34,625 INFO L231 Difference]: Finished difference. Result has 88 places, 142 transitions, 1256 flow [2023-01-27 20:23:34,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1256, PETRI_PLACES=88, PETRI_TRANSITIONS=142} [2023-01-27 20:23:34,625 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 42 predicate places. [2023-01-27 20:23:34,625 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 142 transitions, 1256 flow [2023-01-27 20:23:34,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:34,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:34,626 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:34,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 20:23:34,626 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)] === [2023-01-27 20:23:34,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:34,626 INFO L85 PathProgramCache]: Analyzing trace with hash 763817431, now seen corresponding path program 1 times [2023-01-27 20:23:34,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:34,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301630216] [2023-01-27 20:23:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:34,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:34,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:34,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301630216] [2023-01-27 20:23:34,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301630216] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:34,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:34,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:23:34,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904623061] [2023-01-27 20:23:34,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:34,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:23:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:34,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:23:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:23:34,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-27 20:23:34,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 142 transitions, 1256 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:34,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:34,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-27 20:23:34,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:37,212 INFO L130 PetriNetUnfolder]: 12294/17373 cut-off events. [2023-01-27 20:23:37,212 INFO L131 PetriNetUnfolder]: For 54974/54974 co-relation queries the response was YES. [2023-01-27 20:23:37,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64321 conditions, 17373 events. 12294/17373 cut-off events. For 54974/54974 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 92936 event pairs, 5850 based on Foata normal form. 0/15447 useless extension candidates. Maximal degree in co-relation 64211. Up to 14217 conditions per place. [2023-01-27 20:23:37,298 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 179 selfloop transitions, 9 changer transitions 0/188 dead transitions. [2023-01-27 20:23:37,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 188 transitions, 1949 flow [2023-01-27 20:23:37,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:23:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:23:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2010 transitions. [2023-01-27 20:23:37,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-01-27 20:23:37,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2010 transitions. [2023-01-27 20:23:37,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2010 transitions. [2023-01-27 20:23:37,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:37,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2010 transitions. [2023-01-27 20:23:37,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.0) internal successors, (2010), 3 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) [2023-01-27 20:23:37,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:37,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:37,307 INFO L175 Difference]: Start difference. First operand has 88 places, 142 transitions, 1256 flow. Second operand 3 states and 2010 transitions. [2023-01-27 20:23:37,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 188 transitions, 1949 flow [2023-01-27 20:23:37,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 188 transitions, 1940 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:37,439 INFO L231 Difference]: Finished difference. Result has 90 places, 141 transitions, 1275 flow [2023-01-27 20:23:37,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1275, PETRI_PLACES=90, PETRI_TRANSITIONS=141} [2023-01-27 20:23:37,439 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 44 predicate places. [2023-01-27 20:23:37,439 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 141 transitions, 1275 flow [2023-01-27 20:23:37,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:37,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:37,440 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:37,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 20:23:37,440 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)] === [2023-01-27 20:23:37,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:37,440 INFO L85 PathProgramCache]: Analyzing trace with hash 937813535, now seen corresponding path program 1 times [2023-01-27 20:23:37,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:37,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724428677] [2023-01-27 20:23:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:37,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:37,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:37,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724428677] [2023-01-27 20:23:37,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724428677] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:37,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:37,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:23:37,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897328252] [2023-01-27 20:23:37,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 20:23:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:37,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 20:23:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 20:23:37,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 644 out of 1608 [2023-01-27 20:23:37,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 141 transitions, 1275 flow. Second operand has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:37,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:37,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 644 of 1608 [2023-01-27 20:23:37,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:41,050 INFO L130 PetriNetUnfolder]: 17332/24411 cut-off events. [2023-01-27 20:23:41,051 INFO L131 PetriNetUnfolder]: For 81239/81239 co-relation queries the response was YES. [2023-01-27 20:23:41,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93256 conditions, 24411 events. 17332/24411 cut-off events. For 81239/81239 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 133043 event pairs, 8161 based on Foata normal form. 412/21791 useless extension candidates. Maximal degree in co-relation 93145. Up to 16188 conditions per place. [2023-01-27 20:23:41,241 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 182 selfloop transitions, 8 changer transitions 0/190 dead transitions. [2023-01-27 20:23:41,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 190 transitions, 2024 flow [2023-01-27 20:23:41,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 20:23:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 20:23:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2008 transitions. [2023-01-27 20:23:41,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41625207296849087 [2023-01-27 20:23:41,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2008 transitions. [2023-01-27 20:23:41,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2008 transitions. [2023-01-27 20:23:41,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:41,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2008 transitions. [2023-01-27 20:23:41,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 669.3333333333334) internal successors, (2008), 3 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) [2023-01-27 20:23:41,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:41,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1608.0) internal successors, (6432), 4 states have internal predecessors, (6432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:41,250 INFO L175 Difference]: Start difference. First operand has 90 places, 141 transitions, 1275 flow. Second operand 3 states and 2008 transitions. [2023-01-27 20:23:41,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 190 transitions, 2024 flow [2023-01-27 20:23:41,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 190 transitions, 1995 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:41,434 INFO L231 Difference]: Finished difference. Result has 92 places, 138 transitions, 1237 flow [2023-01-27 20:23:41,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1237, PETRI_PLACES=92, PETRI_TRANSITIONS=138} [2023-01-27 20:23:41,435 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-01-27 20:23:41,435 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 138 transitions, 1237 flow [2023-01-27 20:23:41,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 651.6666666666666) internal successors, (1955), 3 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:41,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:41,435 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:41,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 20:23:41,435 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)] === [2023-01-27 20:23:41,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:41,436 INFO L85 PathProgramCache]: Analyzing trace with hash 146834425, now seen corresponding path program 1 times [2023-01-27 20:23:41,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:41,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284686842] [2023-01-27 20:23:41,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:41,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:23:41,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:41,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284686842] [2023-01-27 20:23:41,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284686842] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:41,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:41,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:23:41,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689787582] [2023-01-27 20:23:41,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:41,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:23:41,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:41,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:23:41,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:23:41,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-27 20:23:41,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 138 transitions, 1237 flow. Second operand has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:41,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:41,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-27 20:23:41,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:45,092 INFO L130 PetriNetUnfolder]: 17806/25153 cut-off events. [2023-01-27 20:23:45,092 INFO L131 PetriNetUnfolder]: For 79892/79892 co-relation queries the response was YES. [2023-01-27 20:23:45,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95789 conditions, 25153 events. 17806/25153 cut-off events. For 79892/79892 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 142677 event pairs, 4930 based on Foata normal form. 4/21961 useless extension candidates. Maximal degree in co-relation 95677. Up to 22762 conditions per place. [2023-01-27 20:23:45,258 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 166 selfloop transitions, 11 changer transitions 29/206 dead transitions. [2023-01-27 20:23:45,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 206 transitions, 2100 flow [2023-01-27 20:23:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:23:45,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:23:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2695 transitions. [2023-01-27 20:23:45,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189987562189055 [2023-01-27 20:23:45,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2695 transitions. [2023-01-27 20:23:45,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2695 transitions. [2023-01-27 20:23:45,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:45,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2695 transitions. [2023-01-27 20:23:45,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 673.75) internal successors, (2695), 4 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:45,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:45,268 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:45,268 INFO L175 Difference]: Start difference. First operand has 92 places, 138 transitions, 1237 flow. Second operand 4 states and 2695 transitions. [2023-01-27 20:23:45,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 206 transitions, 2100 flow [2023-01-27 20:23:45,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 206 transitions, 2084 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:45,410 INFO L231 Difference]: Finished difference. Result has 97 places, 143 transitions, 1338 flow [2023-01-27 20:23:45,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1338, PETRI_PLACES=97, PETRI_TRANSITIONS=143} [2023-01-27 20:23:45,411 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 51 predicate places. [2023-01-27 20:23:45,411 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 143 transitions, 1338 flow [2023-01-27 20:23:45,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:45,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:45,412 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:45,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 20:23:45,412 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)] === [2023-01-27 20:23:45,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:45,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1281119567, now seen corresponding path program 2 times [2023-01-27 20:23:45,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:45,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300003647] [2023-01-27 20:23:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:45,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:23:45,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300003647] [2023-01-27 20:23:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300003647] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:23:45,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:23:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:23:45,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380408497] [2023-01-27 20:23:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:23:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:23:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:23:45,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:23:45,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-27 20:23:45,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 143 transitions, 1338 flow. Second operand has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:45,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:45,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-27 20:23:45,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:48,871 INFO L130 PetriNetUnfolder]: 16909/23851 cut-off events. [2023-01-27 20:23:48,871 INFO L131 PetriNetUnfolder]: For 77336/77336 co-relation queries the response was YES. [2023-01-27 20:23:48,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90507 conditions, 23851 events. 16909/23851 cut-off events. For 77336/77336 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 131000 event pairs, 10297 based on Foata normal form. 5/20840 useless extension candidates. Maximal degree in co-relation 90439. Up to 21826 conditions per place. [2023-01-27 20:23:49,013 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 155 selfloop transitions, 4 changer transitions 37/196 dead transitions. [2023-01-27 20:23:49,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 196 transitions, 1991 flow [2023-01-27 20:23:49,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:23:49,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:23:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2693 transitions. [2023-01-27 20:23:49,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41868781094527363 [2023-01-27 20:23:49,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2693 transitions. [2023-01-27 20:23:49,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2693 transitions. [2023-01-27 20:23:49,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:49,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2693 transitions. [2023-01-27 20:23:49,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 673.25) internal successors, (2693), 4 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:49,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:49,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:49,023 INFO L175 Difference]: Start difference. First operand has 97 places, 143 transitions, 1338 flow. Second operand 4 states and 2693 transitions. [2023-01-27 20:23:49,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 196 transitions, 1991 flow [2023-01-27 20:23:49,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 196 transitions, 1976 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 20:23:49,169 INFO L231 Difference]: Finished difference. Result has 98 places, 131 transitions, 1196 flow [2023-01-27 20:23:49,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1196, PETRI_PLACES=98, PETRI_TRANSITIONS=131} [2023-01-27 20:23:49,169 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 52 predicate places. [2023-01-27 20:23:49,169 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 131 transitions, 1196 flow [2023-01-27 20:23:49,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 656.0) internal successors, (2624), 4 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:49,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:49,170 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:49,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 20:23:49,170 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)] === [2023-01-27 20:23:49,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash -244449536, now seen corresponding path program 1 times [2023-01-27 20:23:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986909740] [2023-01-27 20:23:49,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:49,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:49,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986909740] [2023-01-27 20:23:49,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986909740] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:49,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665348469] [2023-01-27 20:23:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:49,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:49,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:49,501 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) [2023-01-27 20:23:49,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 20:23:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:49,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:23:49,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:49,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:23:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:49,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665348469] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:23:49,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:23:49,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2023-01-27 20:23:49,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929289032] [2023-01-27 20:23:49,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:23:49,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 20:23:49,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:49,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 20:23:49,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-27 20:23:49,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 624 out of 1608 [2023-01-27 20:23:49,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 131 transitions, 1196 flow. Second operand has 9 states, 9 states have (on average 631.6666666666666) internal successors, (5685), 9 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:49,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:49,931 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 624 of 1608 [2023-01-27 20:23:49,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:53,850 INFO L130 PetriNetUnfolder]: 17414/24697 cut-off events. [2023-01-27 20:23:53,850 INFO L131 PetriNetUnfolder]: For 77476/77476 co-relation queries the response was YES. [2023-01-27 20:23:54,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93462 conditions, 24697 events. 17414/24697 cut-off events. For 77476/77476 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 137965 event pairs, 3924 based on Foata normal form. 4/21597 useless extension candidates. Maximal degree in co-relation 93391. Up to 11141 conditions per place. [2023-01-27 20:23:54,081 INFO L137 encePairwiseOnDemand]: 1594/1608 looper letters, 259 selfloop transitions, 62 changer transitions 35/356 dead transitions. [2023-01-27 20:23:54,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 356 transitions, 3292 flow [2023-01-27 20:23:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 20:23:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 20:23:54,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 8980 transitions. [2023-01-27 20:23:54,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39889836531627576 [2023-01-27 20:23:54,106 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 8980 transitions. [2023-01-27 20:23:54,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 8980 transitions. [2023-01-27 20:23:54,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:54,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 8980 transitions. [2023-01-27 20:23:54,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 641.4285714285714) internal successors, (8980), 14 states have internal predecessors, (8980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:54,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1608.0) internal successors, (24120), 15 states have internal predecessors, (24120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:54,127 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1608.0) internal successors, (24120), 15 states have internal predecessors, (24120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:54,128 INFO L175 Difference]: Start difference. First operand has 98 places, 131 transitions, 1196 flow. Second operand 14 states and 8980 transitions. [2023-01-27 20:23:54,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 356 transitions, 3292 flow [2023-01-27 20:23:54,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 356 transitions, 3250 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-01-27 20:23:54,354 INFO L231 Difference]: Finished difference. Result has 112 places, 161 transitions, 1745 flow [2023-01-27 20:23:54,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1745, PETRI_PLACES=112, PETRI_TRANSITIONS=161} [2023-01-27 20:23:54,354 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 66 predicate places. [2023-01-27 20:23:54,354 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 161 transitions, 1745 flow [2023-01-27 20:23:54,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 631.6666666666666) internal successors, (5685), 9 states have internal predecessors, (5685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:54,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:54,355 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:54,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 20:23:54,561 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,SelfDestructingSolverStorable14 [2023-01-27 20:23:54,561 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)] === [2023-01-27 20:23:54,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:23:54,562 INFO L85 PathProgramCache]: Analyzing trace with hash 939975353, now seen corresponding path program 1 times [2023-01-27 20:23:54,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:23:54,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489428513] [2023-01-27 20:23:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:54,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:23:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:54,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:23:54,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489428513] [2023-01-27 20:23:54,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489428513] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:23:54,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309782358] [2023-01-27 20:23:54,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:23:54,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:23:54,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:23:54,765 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:23:54,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 20:23:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:23:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-27 20:23:54,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:23:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:55,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:23:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:23:55,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309782358] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:23:55,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:23:55,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-27 20:23:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403870904] [2023-01-27 20:23:55,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:23:55,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 20:23:55,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:23:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 20:23:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 20:23:55,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-27 20:23:55,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 161 transitions, 1745 flow. Second operand has 6 states, 6 states have (on average 657.6666666666666) internal successors, (3946), 6 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:55,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:23:55,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-27 20:23:55,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:23:59,217 INFO L130 PetriNetUnfolder]: 17516/24962 cut-off events. [2023-01-27 20:23:59,217 INFO L131 PetriNetUnfolder]: For 100253/100253 co-relation queries the response was YES. [2023-01-27 20:23:59,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98038 conditions, 24962 events. 17516/24962 cut-off events. For 100253/100253 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 141460 event pairs, 3642 based on Foata normal form. 3/21839 useless extension candidates. Maximal degree in co-relation 97966. Up to 20872 conditions per place. [2023-01-27 20:23:59,394 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 149 selfloop transitions, 12 changer transitions 63/224 dead transitions. [2023-01-27 20:23:59,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 224 transitions, 2603 flow [2023-01-27 20:23:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:23:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:23:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2701 transitions. [2023-01-27 20:23:59,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419931592039801 [2023-01-27 20:23:59,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2701 transitions. [2023-01-27 20:23:59,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2701 transitions. [2023-01-27 20:23:59,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:23:59,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2701 transitions. [2023-01-27 20:23:59,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 675.25) internal successors, (2701), 4 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:59,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:59,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:59,404 INFO L175 Difference]: Start difference. First operand has 112 places, 161 transitions, 1745 flow. Second operand 4 states and 2701 transitions. [2023-01-27 20:23:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 224 transitions, 2603 flow [2023-01-27 20:23:59,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 224 transitions, 2533 flow, removed 35 selfloop flow, removed 1 redundant places. [2023-01-27 20:23:59,810 INFO L231 Difference]: Finished difference. Result has 116 places, 136 transitions, 1435 flow [2023-01-27 20:23:59,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1679, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1435, PETRI_PLACES=116, PETRI_TRANSITIONS=136} [2023-01-27 20:23:59,810 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 70 predicate places. [2023-01-27 20:23:59,810 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 136 transitions, 1435 flow [2023-01-27 20:23:59,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 657.6666666666666) internal successors, (3946), 6 states have internal predecessors, (3946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:23:59,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:23:59,811 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:23:59,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 20:24:00,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-27 20:24:00,017 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)] === [2023-01-27 20:24:00,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2101200279, now seen corresponding path program 2 times [2023-01-27 20:24:00,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:00,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246681504] [2023-01-27 20:24:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:00,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:24:00,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:00,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246681504] [2023-01-27 20:24:00,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246681504] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:00,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:00,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 20:24:00,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509840753] [2023-01-27 20:24:00,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:24:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:00,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:24:00,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:24:00,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 650 out of 1608 [2023-01-27 20:24:00,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 136 transitions, 1435 flow. Second operand has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:00,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:00,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 650 of 1608 [2023-01-27 20:24:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:03,182 INFO L130 PetriNetUnfolder]: 15133/21478 cut-off events. [2023-01-27 20:24:03,182 INFO L131 PetriNetUnfolder]: For 79389/79389 co-relation queries the response was YES. [2023-01-27 20:24:03,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80846 conditions, 21478 events. 15133/21478 cut-off events. For 79389/79389 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 117789 event pairs, 8830 based on Foata normal form. 4/18652 useless extension candidates. Maximal degree in co-relation 80784. Up to 18757 conditions per place. [2023-01-27 20:24:03,352 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 128 selfloop transitions, 3 changer transitions 58/189 dead transitions. [2023-01-27 20:24:03,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 189 transitions, 2126 flow [2023-01-27 20:24:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:24:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:24:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2697 transitions. [2023-01-27 20:24:03,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193097014925373 [2023-01-27 20:24:03,356 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2697 transitions. [2023-01-27 20:24:03,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2697 transitions. [2023-01-27 20:24:03,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:03,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2697 transitions. [2023-01-27 20:24:03,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 674.25) internal successors, (2697), 4 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:03,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:03,361 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:03,361 INFO L175 Difference]: Start difference. First operand has 116 places, 136 transitions, 1435 flow. Second operand 4 states and 2697 transitions. [2023-01-27 20:24:03,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 189 transitions, 2126 flow [2023-01-27 20:24:03,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 189 transitions, 2056 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-01-27 20:24:03,485 INFO L231 Difference]: Finished difference. Result has 109 places, 113 transitions, 1011 flow [2023-01-27 20:24:03,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1011, PETRI_PLACES=109, PETRI_TRANSITIONS=113} [2023-01-27 20:24:03,485 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2023-01-27 20:24:03,485 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 113 transitions, 1011 flow [2023-01-27 20:24:03,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 657.5) internal successors, (2630), 4 states have internal predecessors, (2630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:03,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:03,486 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:03,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-27 20:24:03,486 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)] === [2023-01-27 20:24:03,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash 2049052014, now seen corresponding path program 2 times [2023-01-27 20:24:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286449995] [2023-01-27 20:24:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:03,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:24:03,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:03,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286449995] [2023-01-27 20:24:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286449995] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:03,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:24:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432485497] [2023-01-27 20:24:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:24:03,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:24:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:24:03,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-27 20:24:03,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 113 transitions, 1011 flow. Second operand has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:03,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:03,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-27 20:24:03,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:06,452 INFO L130 PetriNetUnfolder]: 13744/19200 cut-off events. [2023-01-27 20:24:06,452 INFO L131 PetriNetUnfolder]: For 60014/60014 co-relation queries the response was YES. [2023-01-27 20:24:06,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71251 conditions, 19200 events. 13744/19200 cut-off events. For 60014/60014 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 99419 event pairs, 3970 based on Foata normal form. 1/16577 useless extension candidates. Maximal degree in co-relation 71215. Up to 10228 conditions per place. [2023-01-27 20:24:06,620 INFO L137 encePairwiseOnDemand]: 1598/1608 looper letters, 140 selfloop transitions, 30 changer transitions 21/191 dead transitions. [2023-01-27 20:24:06,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 191 transitions, 1813 flow [2023-01-27 20:24:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:24:06,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:24:06,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3281 transitions. [2023-01-27 20:24:06,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40808457711442786 [2023-01-27 20:24:06,624 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3281 transitions. [2023-01-27 20:24:06,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3281 transitions. [2023-01-27 20:24:06,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:06,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3281 transitions. [2023-01-27 20:24:06,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 656.2) internal successors, (3281), 5 states have internal predecessors, (3281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:06,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:06,630 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:06,630 INFO L175 Difference]: Start difference. First operand has 109 places, 113 transitions, 1011 flow. Second operand 5 states and 3281 transitions. [2023-01-27 20:24:06,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 191 transitions, 1813 flow [2023-01-27 20:24:06,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 191 transitions, 1682 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-01-27 20:24:06,811 INFO L231 Difference]: Finished difference. Result has 102 places, 115 transitions, 1055 flow [2023-01-27 20:24:06,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1055, PETRI_PLACES=102, PETRI_TRANSITIONS=115} [2023-01-27 20:24:06,811 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 56 predicate places. [2023-01-27 20:24:06,812 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 115 transitions, 1055 flow [2023-01-27 20:24:06,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:06,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:06,812 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:06,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-01-27 20:24:06,812 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)] === [2023-01-27 20:24:06,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:06,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1385030174, now seen corresponding path program 3 times [2023-01-27 20:24:06,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:06,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151948359] [2023-01-27 20:24:06,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:06,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:07,075 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:24:07,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:07,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151948359] [2023-01-27 20:24:07,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151948359] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:07,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:07,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:24:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933329589] [2023-01-27 20:24:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:07,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 20:24:07,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 20:24:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 20:24:07,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 632 out of 1608 [2023-01-27 20:24:07,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 115 transitions, 1055 flow. Second operand has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:07,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:07,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 632 of 1608 [2023-01-27 20:24:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:09,804 INFO L130 PetriNetUnfolder]: 13803/19295 cut-off events. [2023-01-27 20:24:09,804 INFO L131 PetriNetUnfolder]: For 54068/54068 co-relation queries the response was YES. [2023-01-27 20:24:09,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70466 conditions, 19295 events. 13803/19295 cut-off events. For 54068/54068 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 100053 event pairs, 4074 based on Foata normal form. 3/16634 useless extension candidates. Maximal degree in co-relation 70433. Up to 10414 conditions per place. [2023-01-27 20:24:09,954 INFO L137 encePairwiseOnDemand]: 1597/1608 looper letters, 141 selfloop transitions, 29 changer transitions 10/180 dead transitions. [2023-01-27 20:24:09,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 180 transitions, 1718 flow [2023-01-27 20:24:09,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 20:24:09,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 20:24:09,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3271 transitions. [2023-01-27 20:24:09,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068407960199005 [2023-01-27 20:24:09,961 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3271 transitions. [2023-01-27 20:24:09,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3271 transitions. [2023-01-27 20:24:09,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:09,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3271 transitions. [2023-01-27 20:24:09,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 654.2) internal successors, (3271), 5 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:09,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:09,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1608.0) internal successors, (9648), 6 states have internal predecessors, (9648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:09,975 INFO L175 Difference]: Start difference. First operand has 102 places, 115 transitions, 1055 flow. Second operand 5 states and 3271 transitions. [2023-01-27 20:24:09,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 180 transitions, 1718 flow [2023-01-27 20:24:10,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 180 transitions, 1672 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-01-27 20:24:10,110 INFO L231 Difference]: Finished difference. Result has 103 places, 114 transitions, 1027 flow [2023-01-27 20:24:10,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1027, PETRI_PLACES=103, PETRI_TRANSITIONS=114} [2023-01-27 20:24:10,111 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2023-01-27 20:24:10,111 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 114 transitions, 1027 flow [2023-01-27 20:24:10,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 638.0) internal successors, (3190), 5 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:10,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:10,111 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:10,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-01-27 20:24:10,111 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)] === [2023-01-27 20:24:10,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1385637435, now seen corresponding path program 1 times [2023-01-27 20:24:10,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:10,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381356495] [2023-01-27 20:24:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:10,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-01-27 20:24:10,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381356495] [2023-01-27 20:24:10,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381356495] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:10,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:10,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:24:10,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696266154] [2023-01-27 20:24:10,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:10,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:24:10,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:10,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:24:10,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:24:10,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-27 20:24:10,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 114 transitions, 1027 flow. Second operand has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:10,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:10,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-27 20:24:10,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:12,974 INFO L130 PetriNetUnfolder]: 13589/18915 cut-off events. [2023-01-27 20:24:12,974 INFO L131 PetriNetUnfolder]: For 68131/68131 co-relation queries the response was YES. [2023-01-27 20:24:13,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76499 conditions, 18915 events. 13589/18915 cut-off events. For 68131/68131 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 96930 event pairs, 8294 based on Foata normal form. 34/16323 useless extension candidates. Maximal degree in co-relation 76466. Up to 18039 conditions per place. [2023-01-27 20:24:13,119 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 133 selfloop transitions, 6 changer transitions 3/142 dead transitions. [2023-01-27 20:24:13,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 142 transitions, 1435 flow [2023-01-27 20:24:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:24:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:24:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2678 transitions. [2023-01-27 20:24:13,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41635572139303484 [2023-01-27 20:24:13,122 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2678 transitions. [2023-01-27 20:24:13,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2678 transitions. [2023-01-27 20:24:13,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:13,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2678 transitions. [2023-01-27 20:24:13,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.5) internal successors, (2678), 4 states have internal predecessors, (2678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:13,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:13,127 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:13,127 INFO L175 Difference]: Start difference. First operand has 103 places, 114 transitions, 1027 flow. Second operand 4 states and 2678 transitions. [2023-01-27 20:24:13,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 142 transitions, 1435 flow [2023-01-27 20:24:13,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 142 transitions, 1312 flow, removed 40 selfloop flow, removed 6 redundant places. [2023-01-27 20:24:13,304 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 900 flow [2023-01-27 20:24:13,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=900, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2023-01-27 20:24:13,305 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2023-01-27 20:24:13,305 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 900 flow [2023-01-27 20:24:13,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:13,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:13,305 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:13,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-01-27 20:24:13,305 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)] === [2023-01-27 20:24:13,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1997501473, now seen corresponding path program 2 times [2023-01-27 20:24:13,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:13,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640493461] [2023-01-27 20:24:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:13,668 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-01-27 20:24:13,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:13,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640493461] [2023-01-27 20:24:13,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640493461] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:13,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:13,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:24:13,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812850547] [2023-01-27 20:24:13,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:13,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:24:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:13,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:24:13,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:24:13,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-27 20:24:13,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 900 flow. Second operand has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:13,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:13,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-27 20:24:13,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:16,074 INFO L130 PetriNetUnfolder]: 13367/18525 cut-off events. [2023-01-27 20:24:16,074 INFO L131 PetriNetUnfolder]: For 51781/51781 co-relation queries the response was YES. [2023-01-27 20:24:16,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70249 conditions, 18525 events. 13367/18525 cut-off events. For 51781/51781 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 93742 event pairs, 8230 based on Foata normal form. 6/15959 useless extension candidates. Maximal degree in co-relation 70220. Up to 18039 conditions per place. [2023-01-27 20:24:16,209 INFO L137 encePairwiseOnDemand]: 1605/1608 looper letters, 129 selfloop transitions, 1 changer transitions 8/138 dead transitions. [2023-01-27 20:24:16,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 138 transitions, 1277 flow [2023-01-27 20:24:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:24:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:24:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2676 transitions. [2023-01-27 20:24:16,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416044776119403 [2023-01-27 20:24:16,211 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2676 transitions. [2023-01-27 20:24:16,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2676 transitions. [2023-01-27 20:24:16,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:16,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2676 transitions. [2023-01-27 20:24:16,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 669.0) internal successors, (2676), 4 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:16,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:16,216 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:16,216 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 900 flow. Second operand 4 states and 2676 transitions. [2023-01-27 20:24:16,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 138 transitions, 1277 flow [2023-01-27 20:24:16,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 138 transitions, 1275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 20:24:16,334 INFO L231 Difference]: Finished difference. Result has 96 places, 108 transitions, 840 flow [2023-01-27 20:24:16,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=872, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=840, PETRI_PLACES=96, PETRI_TRANSITIONS=108} [2023-01-27 20:24:16,335 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2023-01-27 20:24:16,335 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 108 transitions, 840 flow [2023-01-27 20:24:16,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:16,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:16,335 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:16,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-01-27 20:24:16,335 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)] === [2023-01-27 20:24:16,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:16,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1082557347, now seen corresponding path program 3 times [2023-01-27 20:24:16,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:16,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394025560] [2023-01-27 20:24:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:16,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:16,672 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:24:16,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:16,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394025560] [2023-01-27 20:24:16,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394025560] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 20:24:16,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 20:24:16,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 20:24:16,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193308112] [2023-01-27 20:24:16,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 20:24:16,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 20:24:16,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:16,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 20:24:16,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 20:24:16,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 651 out of 1608 [2023-01-27 20:24:16,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 108 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:16,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:16,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 651 of 1608 [2023-01-27 20:24:16,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:18,953 INFO L130 PetriNetUnfolder]: 13084/18059 cut-off events. [2023-01-27 20:24:18,954 INFO L131 PetriNetUnfolder]: For 48835/48835 co-relation queries the response was YES. [2023-01-27 20:24:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68447 conditions, 18059 events. 13084/18059 cut-off events. For 48835/48835 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 90097 event pairs, 2975 based on Foata normal form. 10/15587 useless extension candidates. Maximal degree in co-relation 68418. Up to 17847 conditions per place. [2023-01-27 20:24:19,105 INFO L137 encePairwiseOnDemand]: 1604/1608 looper letters, 111 selfloop transitions, 4 changer transitions 7/122 dead transitions. [2023-01-27 20:24:19,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 1099 flow [2023-01-27 20:24:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 20:24:19,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 20:24:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2671 transitions. [2023-01-27 20:24:19,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152674129353234 [2023-01-27 20:24:19,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2671 transitions. [2023-01-27 20:24:19,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2671 transitions. [2023-01-27 20:24:19,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:24:19,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2671 transitions. [2023-01-27 20:24:19,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 667.75) internal successors, (2671), 4 states have internal predecessors, (2671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:19,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:19,112 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1608.0) internal successors, (8040), 5 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:19,112 INFO L175 Difference]: Start difference. First operand has 96 places, 108 transitions, 840 flow. Second operand 4 states and 2671 transitions. [2023-01-27 20:24:19,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 1099 flow [2023-01-27 20:24:19,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 122 transitions, 1041 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-27 20:24:19,386 INFO L231 Difference]: Finished difference. Result has 92 places, 99 transitions, 694 flow [2023-01-27 20:24:19,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=694, PETRI_PLACES=92, PETRI_TRANSITIONS=99} [2023-01-27 20:24:19,387 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-01-27 20:24:19,387 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 99 transitions, 694 flow [2023-01-27 20:24:19,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:19,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:24:19,387 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:24:19,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-01-27 20:24:19,388 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)] === [2023-01-27 20:24:19,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:24:19,388 INFO L85 PathProgramCache]: Analyzing trace with hash 275559464, now seen corresponding path program 1 times [2023-01-27 20:24:19,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:24:19,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173618860] [2023-01-27 20:24:19,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:24:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:24:21,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:24:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173618860] [2023-01-27 20:24:21,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173618860] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:24:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522821257] [2023-01-27 20:24:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:24:21,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:24:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:24:21,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:24:21,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 20:24:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:24:21,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 32 conjunts are in the unsatisfiable core [2023-01-27 20:24:21,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:24:21,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 20:24:21,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2023-01-27 20:24:22,265 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:24:22,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:24:23,904 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (forall ((~ends_with_6~0.base Int) (v_ArrVal_1507 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1507) ~ends_with_6~0.base) c_~ends_with_6~0.offset) 256))))) (and (forall ((v_ArrVal_1507 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1507))) (or (= (mod (select (select .cse0 c_~ends_with_2~0.base) (+ c_~i_13~0 c_~ends_with_2~0.offset)) 256) 0) (forall ((~ends_with_6~0.base Int)) (< 0 (mod (select (select .cse0 ~ends_with_6~0.base) c_~ends_with_6~0.offset) 256)))))) (or (< c_~i_13~0 4) .cse1) (or (= (mod (mod c_~break_14~0 256) 4294967296) 0) .cse1) (forall ((~ends_with_6~0.base Int) (v_ArrVal_1507 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1507) ~ends_with_6~0.base))) (or (= (mod (select .cse2 (+ c_~i_13~0 c_~ends_with_6~0.offset)) 256) 0) (< 0 (mod (select .cse2 c_~ends_with_6~0.offset) 256))))))) is different from false [2023-01-27 20:24:24,289 INFO L321 Elim1Store]: treesize reduction 11, result has 83.1 percent of original size [2023-01-27 20:24:24,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 158 [2023-01-27 20:24:24,309 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:24:24,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 93 [2023-01-27 20:24:24,323 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:24:24,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 85 [2023-01-27 20:24:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:24:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522821257] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 20:24:24,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 20:24:24,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 15] total 39 [2023-01-27 20:24:24,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560370137] [2023-01-27 20:24:24,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 20:24:24,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-01-27 20:24:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 20:24:24,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-01-27 20:24:24,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1294, Unknown=3, NotChecked=74, Total=1560 [2023-01-27 20:24:24,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 530 out of 1608 [2023-01-27 20:24:24,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 99 transitions, 694 flow. Second operand has 40 states, 40 states have (on average 532.75) internal successors, (21310), 40 states have internal predecessors, (21310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:24:24,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 20:24:24,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 530 of 1608 [2023-01-27 20:24:24,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 20:24:27,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:24:29,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:24:33,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:24:36,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:24:39,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:25:01,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:25:05,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 20:25:16,975 INFO L130 PetriNetUnfolder]: 84951/117526 cut-off events. [2023-01-27 20:25:16,976 INFO L131 PetriNetUnfolder]: For 223795/223795 co-relation queries the response was YES. [2023-01-27 20:25:17,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428567 conditions, 117526 events. 84951/117526 cut-off events. For 223795/223795 co-relation queries the response was YES. Maximal size of possible extension queue 2867. Compared 762710 event pairs, 6731 based on Foata normal form. 9/100450 useless extension candidates. Maximal degree in co-relation 428540. Up to 31160 conditions per place. [2023-01-27 20:25:17,998 INFO L137 encePairwiseOnDemand]: 1575/1608 looper letters, 2058 selfloop transitions, 685 changer transitions 555/3298 dead transitions. [2023-01-27 20:25:17,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 3298 transitions, 26913 flow [2023-01-27 20:25:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-01-27 20:25:17,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-01-27 20:25:18,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 75785 transitions. [2023-01-27 20:25:18,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3390645692401303 [2023-01-27 20:25:18,193 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 75785 transitions. [2023-01-27 20:25:18,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 75785 transitions. [2023-01-27 20:25:18,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 20:25:18,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 75785 transitions. [2023-01-27 20:25:18,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 545.2158273381295) internal successors, (75785), 139 states have internal predecessors, (75785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:18,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 1608.0) internal successors, (225120), 140 states have internal predecessors, (225120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:18,385 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 1608.0) internal successors, (225120), 140 states have internal predecessors, (225120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:18,385 INFO L175 Difference]: Start difference. First operand has 92 places, 99 transitions, 694 flow. Second operand 139 states and 75785 transitions. [2023-01-27 20:25:18,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 3298 transitions, 26913 flow [2023-01-27 20:25:43,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 3298 transitions, 26537 flow, removed 164 selfloop flow, removed 2 redundant places. [2023-01-27 20:25:43,101 INFO L231 Difference]: Finished difference. Result has 322 places, 860 transitions, 8925 flow [2023-01-27 20:25:43,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1608, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=139, PETRI_FLOW=8925, PETRI_PLACES=322, PETRI_TRANSITIONS=860} [2023-01-27 20:25:43,102 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 276 predicate places. [2023-01-27 20:25:43,102 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 860 transitions, 8925 flow [2023-01-27 20:25:43,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 532.75) internal successors, (21310), 40 states have internal predecessors, (21310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 20:25:43,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 20:25:43,104 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 20:25:43,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-27 20:25:43,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:25:43,310 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)] === [2023-01-27 20:25:43,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 20:25:43,311 INFO L85 PathProgramCache]: Analyzing trace with hash -923697284, now seen corresponding path program 2 times [2023-01-27 20:25:43,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 20:25:43,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390532760] [2023-01-27 20:25:43,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 20:25:43,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 20:25:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 20:25:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-01-27 20:25:45,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 20:25:45,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390532760] [2023-01-27 20:25:45,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390532760] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 20:25:45,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18056722] [2023-01-27 20:25:45,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 20:25:45,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 20:25:45,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 20:25:45,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 20:25:45,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 20:25:45,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 20:25:45,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 20:25:45,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 20:25:45,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 20:25:46,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-01-27 20:25:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-01-27 20:25:46,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 20:25:49,103 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 20:25:49,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 113 treesize of output 444 Received shutdown request... [2023-01-27 20:36:52,184 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 20:36:52,186 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 [2023-01-27 20:36:52,187 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 20:36:52,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 20:36:52,201 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 20:36:52,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-01-27 20:36:52,395 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 30ms.. [2023-01-27 20:36:52,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 20:36:52,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 20:36:52,397 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 20:36:52,398 INFO L445 BasicCegarLoop]: Path program histogram: [8, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2023-01-27 20:36:52,400 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 20:36:52,400 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 20:36:52,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 08:36:52 BasicIcfg [2023-01-27 20:36:52,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 20:36:52,402 INFO L158 Benchmark]: Toolchain (without parser) took 839963.55ms. Allocated memory was 375.4MB in the beginning and 11.9GB in the end (delta: 11.6GB). Free memory was 316.3MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. [2023-01-27 20:36:52,403 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 375.4MB. Free memory is still 323.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 20:36:52,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.79ms. Allocated memory is still 375.4MB. Free memory was 316.0MB in the beginning and 301.5MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 20:36:52,403 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.64ms. Allocated memory is still 375.4MB. Free memory was 301.5MB in the beginning and 297.4MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 20:36:52,403 INFO L158 Benchmark]: Boogie Preprocessor took 32.91ms. Allocated memory is still 375.4MB. Free memory was 297.4MB in the beginning and 294.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 20:36:52,403 INFO L158 Benchmark]: RCFGBuilder took 822.02ms. Allocated memory was 375.4MB in the beginning and 629.1MB in the end (delta: 253.8MB). Free memory was 294.1MB in the beginning and 555.7MB in the end (delta: -261.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.0GB. [2023-01-27 20:36:52,404 INFO L158 Benchmark]: TraceAbstraction took 838844.73ms. Allocated memory was 629.1MB in the beginning and 11.9GB in the end (delta: 11.3GB). Free memory was 555.7MB in the beginning and 8.4GB in the end (delta: -7.9GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. [2023-01-27 20:36:52,408 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 375.4MB. Free memory is still 323.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 224.79ms. Allocated memory is still 375.4MB. Free memory was 316.0MB in the beginning and 301.5MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.64ms. Allocated memory is still 375.4MB. Free memory was 301.5MB in the beginning and 297.4MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.91ms. Allocated memory is still 375.4MB. Free memory was 297.4MB in the beginning and 294.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 822.02ms. Allocated memory was 375.4MB in the beginning and 629.1MB in the end (delta: 253.8MB). Free memory was 294.1MB in the beginning and 555.7MB in the end (delta: -261.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.0GB. * TraceAbstraction took 838844.73ms. Allocated memory was 629.1MB in the beginning and 11.9GB in the end (delta: 11.3GB). Free memory was 555.7MB in the beginning and 8.4GB in the end (delta: -7.9GB). Peak memory consumption was 8.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 22.3s, 641 PlacesBefore, 46 PlacesAfterwards, 704 TransitionsBefore, 48 TransitionsAfterwards, 157248 CoEnabledTransitionPairs, 8 FixpointIterations, 194 TrivialSequentialCompositions, 394 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 211 ConcurrentYvCompositions, 61 ChoiceCompositions, 891 TotalNumberOfCompositions, 150057 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 140944, independent: 140751, independent conditional: 0, independent unconditional: 140751, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 97310, independent: 97260, independent conditional: 0, independent unconditional: 97260, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 140944, independent: 43491, independent conditional: 0, independent unconditional: 43491, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 97310, unknown conditional: 0, unknown unconditional: 97310] , Statistics on independence cache: Total cache size (in pairs): 184, Positive cache size: 164, Positive conditional cache size: 0, Positive unconditional cache size: 164, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 30ms.. - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 30ms.. - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 30ms.. - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 53 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 7 for 30ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 1059 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: 838.7s, OverallIterations: 24, TraceHistogramMax: 5, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 130.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 22.5s, HoareTripleCheckerStatistics: 83 mSolverCounterUnknown, 2594 SdHoareTripleChecker+Valid, 27.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2594 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 26.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2100 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16436 IncrementalHoareTripleChecker+Invalid, 18756 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 0 mSDtfsCounter, 16436 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 704 GetRequests, 417 SyntacticMatches, 7 SemanticMatches, 280 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 10557 ImplicationChecksByTransitivity, 12.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8925occurred in iteration=23, InterpolantAutomatonStates: 246, 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, 1.8s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 1068 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1246 ConstructedInterpolants, 4 QuantifiedInterpolants, 7699 SizeOfPredicates, 140 NumberOfNonLiveVariables, 2332 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 35 InterpolantComputations, 18 PerfectInterpolantSequences, 1261/1325 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