./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 22:39:18,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 22:39:18,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 22:39:18,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 22:39:18,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 22:39:18,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 22:39:18,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 22:39:18,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 22:39:18,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 22:39:18,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 22:39:18,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 22:39:18,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 22:39:18,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 22:39:18,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 22:39:18,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 22:39:18,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 22:39:18,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 22:39:18,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 22:39:18,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 22:39:18,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 22:39:18,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 22:39:18,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 22:39:18,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 22:39:18,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 22:39:18,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 22:39:18,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 22:39:18,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 22:39:18,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 22:39:18,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 22:39:18,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 22:39:18,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 22:39:18,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 22:39:18,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 22:39:18,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 22:39:18,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 22:39:18,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 22:39:18,702 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 22:39:18,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 22:39:18,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 22:39:18,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 22:39:18,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 22:39:18,705 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 22:39:18,736 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 22:39:18,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 22:39:18,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 22:39:18,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 22:39:18,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 22:39:18,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 22:39:18,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 22:39:18,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 22:39:18,740 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 22:39:18,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 22:39:18,741 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 22:39:18,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 22:39:18,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 22:39:18,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 22:39:18,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 22:39:18,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 22:39:18,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 22:39:18,742 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 22:39:18,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 22:39:18,742 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 22:39:18,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 22:39:18,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 22:39:18,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 22:39:18,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 22:39:18,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:39:18,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 22:39:18,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 22:39:18,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 22:39:18,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 22:39:18,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 22:39:18,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 22:39:18,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 22:39:18,744 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 22:39:18,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 22:39:18,745 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 22:39:18,745 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 22:39:19,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 22:39:19,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 22:39:19,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 22:39:19,024 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 22:39:19,024 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 22:39:19,025 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2023-08-30 22:39:20,025 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 22:39:20,298 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 22:39:20,300 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2023-08-30 22:39:20,329 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173c33335/1803c69b94ed4a768dca916689c277e1/FLAG9afed1faf [2023-08-30 22:39:20,350 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/173c33335/1803c69b94ed4a768dca916689c277e1 [2023-08-30 22:39:20,352 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 22:39:20,354 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 22:39:20,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 22:39:20,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 22:39:20,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 22:39:20,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc90e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20, skipping insertion in model container [2023-08-30 22:39:20,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 22:39:20,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 22:39:20,745 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-08-30 22:39:20,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:39:20,785 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 22:39:20,815 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2023-08-30 22:39:20,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 22:39:20,910 INFO L208 MainTranslator]: Completed translation [2023-08-30 22:39:20,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20 WrapperNode [2023-08-30 22:39:20,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 22:39:20,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 22:39:20,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 22:39:20,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 22:39:20,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,963 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 153 [2023-08-30 22:39:20,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 22:39:20,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 22:39:20,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 22:39:20,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 22:39:20,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,982 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 22:39:20,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 22:39:20,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 22:39:20,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 22:39:20,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (1/1) ... [2023-08-30 22:39:20,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 22:39:21,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:39:21,043 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) [2023-08-30 22:39:21,107 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 [2023-08-30 22:39:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-30 22:39:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-30 22:39:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-30 22:39:21,112 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-30 22:39:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 22:39:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 22:39:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 22:39:21,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 22:39:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 22:39:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 22:39:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 22:39:21,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 22:39:21,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 22:39:21,114 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 22:39:21,222 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 22:39:21,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 22:39:21,530 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 22:39:21,535 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 22:39:21,539 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 22:39:21,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:39:21 BoogieIcfgContainer [2023-08-30 22:39:21,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 22:39:21,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 22:39:21,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 22:39:21,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 22:39:21,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:39:20" (1/3) ... [2023-08-30 22:39:21,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e5b4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:39:21, skipping insertion in model container [2023-08-30 22:39:21,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:39:20" (2/3) ... [2023-08-30 22:39:21,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35e5b4cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:39:21, skipping insertion in model container [2023-08-30 22:39:21,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:39:21" (3/3) ... [2023-08-30 22:39:21,548 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2023-08-30 22:39:21,554 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 22:39:21,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 22:39:21,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 22:39:21,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 22:39:21,670 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 22:39:21,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 155 transitions, 326 flow [2023-08-30 22:39:21,772 INFO L130 PetriNetUnfolder]: 10/153 cut-off events. [2023-08-30 22:39:21,772 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 22:39:21,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 153 events. 10/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 348 event pairs, 0 based on Foata normal form. 0/141 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-08-30 22:39:21,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 155 transitions, 326 flow [2023-08-30 22:39:21,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 144 transitions, 297 flow [2023-08-30 22:39:21,788 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 22:39:21,804 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 144 transitions, 297 flow [2023-08-30 22:39:21,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 144 transitions, 297 flow [2023-08-30 22:39:21,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 144 transitions, 297 flow [2023-08-30 22:39:21,829 INFO L130 PetriNetUnfolder]: 10/144 cut-off events. [2023-08-30 22:39:21,830 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 22:39:21,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 144 events. 10/144 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 309 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-08-30 22:39:21,835 INFO L119 LiptonReduction]: Number of co-enabled transitions 6492 [2023-08-30 22:39:24,841 INFO L134 LiptonReduction]: Checked pairs total: 8991 [2023-08-30 22:39:24,842 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-30 22:39:24,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 22:39:24,854 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=true, 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;@3a999464, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 22:39:24,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 22:39:24,857 INFO L130 PetriNetUnfolder]: 1/13 cut-off events. [2023-08-30 22:39:24,857 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 22:39:24,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:24,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 22:39:24,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:24,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1268975004, now seen corresponding path program 1 times [2023-08-30 22:39:24,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:24,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626445193] [2023-08-30 22:39:24,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:24,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:25,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626445193] [2023-08-30 22:39:25,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626445193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:39:25,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:39:25,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:39:25,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079048918] [2023-08-30 22:39:25,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:25,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:39:25,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:25,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:39:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:39:25,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 290 [2023-08-30 22:39:25,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:25,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 290 [2023-08-30 22:39:25,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:25,226 INFO L130 PetriNetUnfolder]: 568/973 cut-off events. [2023-08-30 22:39:25,227 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 22:39:25,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 973 events. 568/973 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3785 event pairs, 234 based on Foata normal form. 0/762 useless extension candidates. Maximal degree in co-relation 1776. Up to 575 conditions per place. [2023-08-30 22:39:25,232 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 47 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-30 22:39:25,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 219 flow [2023-08-30 22:39:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:39:25,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:39:25,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-30 22:39:25,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532183908045977 [2023-08-30 22:39:25,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-30 22:39:25,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-30 22:39:25,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:25,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-30 22:39:25,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,251 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,252 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 463 transitions. [2023-08-30 22:39:25,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 219 flow [2023-08-30 22:39:25,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 211 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 22:39:25,255 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow [2023-08-30 22:39:25,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-08-30 22:39:25,258 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-30 22:39:25,258 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow [2023-08-30 22:39:25,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:25,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:25,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 22:39:25,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:25,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:25,260 INFO L85 PathProgramCache]: Analyzing trace with hash -575844582, now seen corresponding path program 1 times [2023-08-30 22:39:25,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:25,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730403069] [2023-08-30 22:39:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:25,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:25,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:25,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730403069] [2023-08-30 22:39:25,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730403069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:39:25,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:39:25,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 22:39:25,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291455647] [2023-08-30 22:39:25,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:25,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:39:25,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:39:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:39:25,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 290 [2023-08-30 22:39:25,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:25,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 290 [2023-08-30 22:39:25,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:25,433 INFO L130 PetriNetUnfolder]: 625/1064 cut-off events. [2023-08-30 22:39:25,434 INFO L131 PetriNetUnfolder]: For 109/109 co-relation queries the response was YES. [2023-08-30 22:39:25,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 1064 events. 625/1064 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4657 event pairs, 314 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2008. Up to 926 conditions per place. [2023-08-30 22:39:25,438 INFO L137 encePairwiseOnDemand]: 287/290 looper letters, 45 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-30 22:39:25,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 222 flow [2023-08-30 22:39:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:39:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:39:25,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-30 22:39:25,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379310344827586 [2023-08-30 22:39:25,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-30 22:39:25,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-30 22:39:25,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:25,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-30 22:39:25,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,448 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 468 transitions. [2023-08-30 22:39:25,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 222 flow [2023-08-30 22:39:25,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:39:25,450 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-08-30 22:39:25,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-08-30 22:39:25,451 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-30 22:39:25,451 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-08-30 22:39:25,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:25,452 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:25,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 22:39:25,452 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:25,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -884871179, now seen corresponding path program 1 times [2023-08-30 22:39:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:25,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339531966] [2023-08-30 22:39:25,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:25,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:25,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:25,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339531966] [2023-08-30 22:39:25,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339531966] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:25,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775160668] [2023-08-30 22:39:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:25,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:25,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:39:25,607 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) [2023-08-30 22:39:25,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 22:39:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:25,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 22:39:25,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:39:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:25,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:39:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775160668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:39:25,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:39:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-30 22:39:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095462234] [2023-08-30 22:39:25,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:39:25,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 22:39:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 22:39:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 22:39:25,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 290 [2023-08-30 22:39:25,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 136.4) internal successors, (1364), 10 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:25,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:25,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 290 [2023-08-30 22:39:25,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:26,240 INFO L130 PetriNetUnfolder]: 1530/2543 cut-off events. [2023-08-30 22:39:26,240 INFO L131 PetriNetUnfolder]: For 791/791 co-relation queries the response was YES. [2023-08-30 22:39:26,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5831 conditions, 2543 events. 1530/2543 cut-off events. For 791/791 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11709 event pairs, 226 based on Foata normal form. 78/2284 useless extension candidates. Maximal degree in co-relation 5392. Up to 737 conditions per place. [2023-08-30 22:39:26,257 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 150 selfloop transitions, 26 changer transitions 3/180 dead transitions. [2023-08-30 22:39:26,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 180 transitions, 837 flow [2023-08-30 22:39:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 22:39:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 22:39:26,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1778 transitions. [2023-08-30 22:39:26,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109195402298851 [2023-08-30 22:39:26,284 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1778 transitions. [2023-08-30 22:39:26,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1778 transitions. [2023-08-30 22:39:26,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:26,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1778 transitions. [2023-08-30 22:39:26,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 148.16666666666666) internal successors, (1778), 12 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 290.0) internal successors, (3770), 13 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,292 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 290.0) internal successors, (3770), 13 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,292 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1778 transitions. [2023-08-30 22:39:26,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 180 transitions, 837 flow [2023-08-30 22:39:26,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 180 transitions, 822 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:39:26,301 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow [2023-08-30 22:39:26,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2023-08-30 22:39:26,302 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-08-30 22:39:26,302 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow [2023-08-30 22:39:26,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 136.4) internal successors, (1364), 10 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:26,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:26,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 22:39:26,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:26,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:26,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 2024911666, now seen corresponding path program 1 times [2023-08-30 22:39:26,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016222450] [2023-08-30 22:39:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:26,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:26,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:26,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016222450] [2023-08-30 22:39:26,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016222450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:39:26,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:39:26,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:39:26,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632408338] [2023-08-30 22:39:26,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:26,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:39:26,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:26,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:39:26,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:39:26,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 290 [2023-08-30 22:39:26,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:26,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 290 [2023-08-30 22:39:26,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:26,670 INFO L130 PetriNetUnfolder]: 509/974 cut-off events. [2023-08-30 22:39:26,670 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2023-08-30 22:39:26,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2480 conditions, 974 events. 509/974 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4145 event pairs, 98 based on Foata normal form. 0/886 useless extension candidates. Maximal degree in co-relation 2336. Up to 681 conditions per place. [2023-08-30 22:39:26,674 INFO L137 encePairwiseOnDemand]: 285/290 looper letters, 45 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-08-30 22:39:26,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 348 flow [2023-08-30 22:39:26,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:39:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:39:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-08-30 22:39:26,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229885057471264 [2023-08-30 22:39:26,676 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-08-30 22:39:26,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-08-30 22:39:26,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:26,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-08-30 22:39:26,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,679 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 455 transitions. [2023-08-30 22:39:26,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 348 flow [2023-08-30 22:39:26,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 327 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-30 22:39:26,683 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow [2023-08-30 22:39:26,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-08-30 22:39:26,684 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-08-30 22:39:26,684 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow [2023-08-30 22:39:26,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:26,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:26,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 22:39:26,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:26,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2104323153, now seen corresponding path program 1 times [2023-08-30 22:39:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:26,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745706339] [2023-08-30 22:39:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:26,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745706339] [2023-08-30 22:39:26,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745706339] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:39:26,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:39:26,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 22:39:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792099634] [2023-08-30 22:39:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:26,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 22:39:26,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:26,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 22:39:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 22:39:26,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 290 [2023-08-30 22:39:26,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:26,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 290 [2023-08-30 22:39:26,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:26,829 INFO L130 PetriNetUnfolder]: 557/1078 cut-off events. [2023-08-30 22:39:26,830 INFO L131 PetriNetUnfolder]: For 474/474 co-relation queries the response was YES. [2023-08-30 22:39:26,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 1078 events. 557/1078 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4630 event pairs, 353 based on Foata normal form. 24/1102 useless extension candidates. Maximal degree in co-relation 2216. Up to 773 conditions per place. [2023-08-30 22:39:26,833 INFO L137 encePairwiseOnDemand]: 284/290 looper letters, 49 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-30 22:39:26,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 365 flow [2023-08-30 22:39:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 22:39:26,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 22:39:26,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2023-08-30 22:39:26,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5275862068965518 [2023-08-30 22:39:26,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2023-08-30 22:39:26,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2023-08-30 22:39:26,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:26,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2023-08-30 22:39:26,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,838 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 459 transitions. [2023-08-30 22:39:26,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 365 flow [2023-08-30 22:39:26,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 357 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 22:39:26,841 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow [2023-08-30 22:39:26,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-30 22:39:26,841 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-30 22:39:26,842 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow [2023-08-30 22:39:26,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:26,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:26,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:26,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 22:39:26,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:26,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1299614568, now seen corresponding path program 1 times [2023-08-30 22:39:26,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:26,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649293651] [2023-08-30 22:39:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:26,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:27,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649293651] [2023-08-30 22:39:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649293651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:39:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:39:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-30 22:39:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004302706] [2023-08-30 22:39:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 22:39:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 22:39:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-08-30 22:39:28,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 290 [2023-08-30 22:39:28,394 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 15 states, 15 states have (on average 111.4) internal successors, (1671), 15 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:28,394 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:28,394 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 290 [2023-08-30 22:39:28,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:29,478 INFO L130 PetriNetUnfolder]: 930/1729 cut-off events. [2023-08-30 22:39:29,478 INFO L131 PetriNetUnfolder]: For 1197/1197 co-relation queries the response was YES. [2023-08-30 22:39:29,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4454 conditions, 1729 events. 930/1729 cut-off events. For 1197/1197 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7889 event pairs, 174 based on Foata normal form. 32/1747 useless extension candidates. Maximal degree in co-relation 2915. Up to 973 conditions per place. [2023-08-30 22:39:29,484 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 111 selfloop transitions, 38 changer transitions 30/179 dead transitions. [2023-08-30 22:39:29,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 179 transitions, 984 flow [2023-08-30 22:39:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 22:39:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 22:39:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2806 transitions. [2023-08-30 22:39:29,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40316091954022987 [2023-08-30 22:39:29,489 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2806 transitions. [2023-08-30 22:39:29,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2806 transitions. [2023-08-30 22:39:29,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:29,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2806 transitions. [2023-08-30 22:39:29,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 116.91666666666667) internal successors, (2806), 24 states have internal predecessors, (2806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:29,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:29,502 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 290.0) internal successors, (7250), 25 states have internal predecessors, (7250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:29,502 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 24 states and 2806 transitions. [2023-08-30 22:39:29,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 179 transitions, 984 flow [2023-08-30 22:39:29,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 179 transitions, 954 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 22:39:29,509 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 542 flow [2023-08-30 22:39:29,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=542, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-08-30 22:39:29,511 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 54 predicate places. [2023-08-30 22:39:29,512 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 542 flow [2023-08-30 22:39:29,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 111.4) internal successors, (1671), 15 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:29,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:29,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:29,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 22:39:29,514 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:29,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:29,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1750382990, now seen corresponding path program 2 times [2023-08-30 22:39:29,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:29,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765041760] [2023-08-30 22:39:29,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:29,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:30,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765041760] [2023-08-30 22:39:30,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765041760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:39:30,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:39:30,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 22:39:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397371473] [2023-08-30 22:39:30,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:30,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:39:30,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:39:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:39:31,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 290 [2023-08-30 22:39:31,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 542 flow. Second operand has 16 states, 16 states have (on average 108.3125) internal successors, (1733), 16 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:31,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:31,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 290 [2023-08-30 22:39:31,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:32,161 INFO L130 PetriNetUnfolder]: 1208/2259 cut-off events. [2023-08-30 22:39:32,161 INFO L131 PetriNetUnfolder]: For 2489/2489 co-relation queries the response was YES. [2023-08-30 22:39:32,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6977 conditions, 2259 events. 1208/2259 cut-off events. For 2489/2489 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10806 event pairs, 374 based on Foata normal form. 16/2261 useless extension candidates. Maximal degree in co-relation 5574. Up to 1405 conditions per place. [2023-08-30 22:39:32,170 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 117 selfloop transitions, 32 changer transitions 23/172 dead transitions. [2023-08-30 22:39:32,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 172 transitions, 1221 flow [2023-08-30 22:39:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 22:39:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 22:39:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1623 transitions. [2023-08-30 22:39:32,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997536945812808 [2023-08-30 22:39:32,174 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1623 transitions. [2023-08-30 22:39:32,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1623 transitions. [2023-08-30 22:39:32,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:32,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1623 transitions. [2023-08-30 22:39:32,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.92857142857143) internal successors, (1623), 14 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:32,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:32,182 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:32,182 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 542 flow. Second operand 14 states and 1623 transitions. [2023-08-30 22:39:32,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 172 transitions, 1221 flow [2023-08-30 22:39:32,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 172 transitions, 1209 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 22:39:32,190 INFO L231 Difference]: Finished difference. Result has 108 places, 99 transitions, 756 flow [2023-08-30 22:39:32,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=756, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2023-08-30 22:39:32,191 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 74 predicate places. [2023-08-30 22:39:32,191 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 756 flow [2023-08-30 22:39:32,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.3125) internal successors, (1733), 16 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:32,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:32,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:32,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 22:39:32,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:32,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash 954194670, now seen corresponding path program 3 times [2023-08-30 22:39:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:32,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853219304] [2023-08-30 22:39:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:32,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:32,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:32,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853219304] [2023-08-30 22:39:32,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853219304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:39:32,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 22:39:32,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-30 22:39:32,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579786294] [2023-08-30 22:39:32,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:39:32,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:39:32,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-08-30 22:39:33,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 290 [2023-08-30 22:39:33,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 756 flow. Second operand has 16 states, 16 states have (on average 108.3125) internal successors, (1733), 16 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:33,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:33,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 290 [2023-08-30 22:39:33,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:34,548 INFO L130 PetriNetUnfolder]: 1356/2543 cut-off events. [2023-08-30 22:39:34,549 INFO L131 PetriNetUnfolder]: For 3554/3554 co-relation queries the response was YES. [2023-08-30 22:39:34,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8329 conditions, 2543 events. 1356/2543 cut-off events. For 3554/3554 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 12525 event pairs, 371 based on Foata normal form. 16/2545 useless extension candidates. Maximal degree in co-relation 6506. Up to 1368 conditions per place. [2023-08-30 22:39:34,569 INFO L137 encePairwiseOnDemand]: 273/290 looper letters, 117 selfloop transitions, 40 changer transitions 24/181 dead transitions. [2023-08-30 22:39:34,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 181 transitions, 1431 flow [2023-08-30 22:39:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 22:39:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 22:39:34,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1623 transitions. [2023-08-30 22:39:34,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997536945812808 [2023-08-30 22:39:34,573 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1623 transitions. [2023-08-30 22:39:34,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1623 transitions. [2023-08-30 22:39:34,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:34,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1623 transitions. [2023-08-30 22:39:34,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.92857142857143) internal successors, (1623), 14 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:34,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:34,580 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 290.0) internal successors, (4350), 15 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:34,580 INFO L175 Difference]: Start difference. First operand has 108 places, 99 transitions, 756 flow. Second operand 14 states and 1623 transitions. [2023-08-30 22:39:34,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 181 transitions, 1431 flow [2023-08-30 22:39:34,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 181 transitions, 1403 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 22:39:34,594 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 951 flow [2023-08-30 22:39:34,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=951, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2023-08-30 22:39:34,596 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-08-30 22:39:34,596 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 951 flow [2023-08-30 22:39:34,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.3125) internal successors, (1733), 16 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:34,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:34,597 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 22:39:34,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 22:39:34,597 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:34,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1380599275, now seen corresponding path program 2 times [2023-08-30 22:39:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:34,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449830921] [2023-08-30 22:39:34,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:34,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:34,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:34,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:34,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449830921] [2023-08-30 22:39:34,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449830921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:34,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840422957] [2023-08-30 22:39:34,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 22:39:34,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:34,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:39:34,748 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) [2023-08-30 22:39:34,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 22:39:34,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:39:34,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:39:34,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 22:39:34,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:39:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:34,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:39:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:34,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840422957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:39:34,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:39:34,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 14 [2023-08-30 22:39:34,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997086201] [2023-08-30 22:39:34,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:39:34,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 22:39:34,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:34,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 22:39:34,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-08-30 22:39:34,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 290 [2023-08-30 22:39:34,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 951 flow. Second operand has 15 states, 15 states have (on average 133.4) internal successors, (2001), 15 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:34,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:34,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 290 [2023-08-30 22:39:34,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:35,463 INFO L130 PetriNetUnfolder]: 1520/2891 cut-off events. [2023-08-30 22:39:35,463 INFO L131 PetriNetUnfolder]: For 6091/6091 co-relation queries the response was YES. [2023-08-30 22:39:35,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10081 conditions, 2891 events. 1520/2891 cut-off events. For 6091/6091 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14455 event pairs, 386 based on Foata normal form. 16/2891 useless extension candidates. Maximal degree in co-relation 7162. Up to 978 conditions per place. [2023-08-30 22:39:35,481 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 188 selfloop transitions, 48 changer transitions 6/247 dead transitions. [2023-08-30 22:39:35,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 247 transitions, 2110 flow [2023-08-30 22:39:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 22:39:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 22:39:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2391 transitions. [2023-08-30 22:39:35,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48498985801217037 [2023-08-30 22:39:35,485 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2391 transitions. [2023-08-30 22:39:35,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2391 transitions. [2023-08-30 22:39:35,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:35,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2391 transitions. [2023-08-30 22:39:35,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 140.64705882352942) internal successors, (2391), 17 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:35,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 290.0) internal successors, (5220), 18 states have internal predecessors, (5220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:35,495 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 290.0) internal successors, (5220), 18 states have internal predecessors, (5220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:35,495 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 951 flow. Second operand 17 states and 2391 transitions. [2023-08-30 22:39:35,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 247 transitions, 2110 flow [2023-08-30 22:39:35,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 247 transitions, 2047 flow, removed 20 selfloop flow, removed 5 redundant places. [2023-08-30 22:39:35,514 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 1259 flow [2023-08-30 22:39:35,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1259, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2023-08-30 22:39:35,514 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 107 predicate places. [2023-08-30 22:39:35,515 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 1259 flow [2023-08-30 22:39:35,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 133.4) internal successors, (2001), 15 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:35,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:35,524 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:35,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 22:39:35,730 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,SelfDestructingSolverStorable8 [2023-08-30 22:39:35,731 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:35,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 934646639, now seen corresponding path program 4 times [2023-08-30 22:39:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:35,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279916879] [2023-08-30 22:39:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:36,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279916879] [2023-08-30 22:39:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279916879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648720802] [2023-08-30 22:39:36,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 22:39:36,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:36,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:39:36,305 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) [2023-08-30 22:39:36,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 22:39:36,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 22:39:36,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:39:36,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-30 22:39:36,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:39:36,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-08-30 22:39:37,122 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 78 treesize of output 45 [2023-08-30 22:39:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:39,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:39:40,106 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 54 treesize of output 46 [2023-08-30 22:39:40,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:39:40,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648720802] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:40,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 22:39:40,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15, 15] total 43 [2023-08-30 22:39:40,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177350068] [2023-08-30 22:39:40,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:40,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 22:39:40,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:40,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 22:39:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1750, Unknown=1, NotChecked=0, Total=1892 [2023-08-30 22:39:41,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 290 [2023-08-30 22:39:41,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 127 transitions, 1259 flow. Second operand has 14 states, 14 states have (on average 117.0) internal successors, (1638), 14 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:41,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:41,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 290 [2023-08-30 22:39:41,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:44,425 INFO L130 PetriNetUnfolder]: 2832/5250 cut-off events. [2023-08-30 22:39:44,426 INFO L131 PetriNetUnfolder]: For 14501/14501 co-relation queries the response was YES. [2023-08-30 22:39:44,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19586 conditions, 5250 events. 2832/5250 cut-off events. For 14501/14501 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 29424 event pairs, 686 based on Foata normal form. 0/5221 useless extension candidates. Maximal degree in co-relation 14314. Up to 1634 conditions per place. [2023-08-30 22:39:44,460 INFO L137 encePairwiseOnDemand]: 274/290 looper letters, 194 selfloop transitions, 140 changer transitions 4/338 dead transitions. [2023-08-30 22:39:44,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 338 transitions, 3324 flow [2023-08-30 22:39:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 22:39:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 22:39:44,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3408 transitions. [2023-08-30 22:39:44,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41970443349753694 [2023-08-30 22:39:44,467 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3408 transitions. [2023-08-30 22:39:44,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3408 transitions. [2023-08-30 22:39:44,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:44,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3408 transitions. [2023-08-30 22:39:44,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 121.71428571428571) internal successors, (3408), 28 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:44,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 290.0) internal successors, (8410), 29 states have internal predecessors, (8410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:44,481 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 290.0) internal successors, (8410), 29 states have internal predecessors, (8410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:44,482 INFO L175 Difference]: Start difference. First operand has 141 places, 127 transitions, 1259 flow. Second operand 28 states and 3408 transitions. [2023-08-30 22:39:44,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 338 transitions, 3324 flow [2023-08-30 22:39:44,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 338 transitions, 3094 flow, removed 73 selfloop flow, removed 8 redundant places. [2023-08-30 22:39:44,524 INFO L231 Difference]: Finished difference. Result has 167 places, 204 transitions, 2262 flow [2023-08-30 22:39:44,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2262, PETRI_PLACES=167, PETRI_TRANSITIONS=204} [2023-08-30 22:39:44,525 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 133 predicate places. [2023-08-30 22:39:44,525 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 204 transitions, 2262 flow [2023-08-30 22:39:44,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 117.0) internal successors, (1638), 14 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:44,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:44,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:44,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 22:39:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:44,731 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:44,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1979329675, now seen corresponding path program 5 times [2023-08-30 22:39:44,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:44,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469306402] [2023-08-30 22:39:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:45,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:45,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:45,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469306402] [2023-08-30 22:39:45,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469306402] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:45,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455369251] [2023-08-30 22:39:45,509 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 22:39:45,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:45,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:39:45,521 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) [2023-08-30 22:39:45,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 22:39:45,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:39:45,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:39:45,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 71 conjunts are in the unsatisfiable core [2023-08-30 22:39:45,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:39:45,688 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-30 22:39:45,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 22:39:46,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-08-30 22:39:46,206 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 43 treesize of output 38 [2023-08-30 22:39:46,611 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 78 treesize of output 45 [2023-08-30 22:39:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:47,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:39:47,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:39:47,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 22:39:47,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:39:47,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 52 [2023-08-30 22:39:47,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 22 [2023-08-30 22:39:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:39:47,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455369251] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:47,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 22:39:47,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16, 16] total 46 [2023-08-30 22:39:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686767135] [2023-08-30 22:39:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:39:47,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 22:39:47,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 22:39:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2059, Unknown=15, NotChecked=0, Total=2256 [2023-08-30 22:39:48,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-08-30 22:39:48,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 204 transitions, 2262 flow. Second operand has 16 states, 16 states have (on average 87.75) internal successors, (1404), 16 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:48,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:48,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-08-30 22:39:48,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:53,971 INFO L130 PetriNetUnfolder]: 3578/6624 cut-off events. [2023-08-30 22:39:53,971 INFO L131 PetriNetUnfolder]: For 20954/20954 co-relation queries the response was YES. [2023-08-30 22:39:54,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25910 conditions, 6624 events. 3578/6624 cut-off events. For 20954/20954 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 38493 event pairs, 640 based on Foata normal form. 0/6583 useless extension candidates. Maximal degree in co-relation 17901. Up to 1689 conditions per place. [2023-08-30 22:39:54,017 INFO L137 encePairwiseOnDemand]: 275/290 looper letters, 171 selfloop transitions, 208 changer transitions 3/382 dead transitions. [2023-08-30 22:39:54,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 382 transitions, 4156 flow [2023-08-30 22:39:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 22:39:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 22:39:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2504 transitions. [2023-08-30 22:39:54,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3197956577266922 [2023-08-30 22:39:54,021 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2504 transitions. [2023-08-30 22:39:54,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2504 transitions. [2023-08-30 22:39:54,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:54,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2504 transitions. [2023-08-30 22:39:54,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 92.74074074074075) internal successors, (2504), 27 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:54,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 290.0) internal successors, (8120), 28 states have internal predecessors, (8120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:54,030 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 290.0) internal successors, (8120), 28 states have internal predecessors, (8120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:54,030 INFO L175 Difference]: Start difference. First operand has 167 places, 204 transitions, 2262 flow. Second operand 27 states and 2504 transitions. [2023-08-30 22:39:54,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 382 transitions, 4156 flow [2023-08-30 22:39:54,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 382 transitions, 3939 flow, removed 70 selfloop flow, removed 6 redundant places. [2023-08-30 22:39:54,109 INFO L231 Difference]: Finished difference. Result has 193 places, 254 transitions, 3198 flow [2023-08-30 22:39:54,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3198, PETRI_PLACES=193, PETRI_TRANSITIONS=254} [2023-08-30 22:39:54,110 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 159 predicate places. [2023-08-30 22:39:54,110 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 254 transitions, 3198 flow [2023-08-30 22:39:54,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 87.75) internal successors, (1404), 16 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:54,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:54,110 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:54,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 22:39:54,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:54,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:54,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:54,316 INFO L85 PathProgramCache]: Analyzing trace with hash -280112859, now seen corresponding path program 1 times [2023-08-30 22:39:54,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:54,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859949820] [2023-08-30 22:39:54,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:54,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 22:39:54,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859949820] [2023-08-30 22:39:54,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859949820] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:54,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140118373] [2023-08-30 22:39:54,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:54,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:54,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:39:54,449 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) [2023-08-30 22:39:54,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 22:39:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:54,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 22:39:54,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:39:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 22:39:54,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:39:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 22:39:54,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140118373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:39:54,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:39:54,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-30 22:39:54,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212837252] [2023-08-30 22:39:54,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:39:54,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 22:39:54,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:39:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 22:39:54,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-08-30 22:39:54,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 290 [2023-08-30 22:39:54,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 254 transitions, 3198 flow. Second operand has 17 states, 17 states have (on average 130.2941176470588) internal successors, (2215), 17 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:54,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:39:54,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 290 [2023-08-30 22:39:54,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:39:56,173 INFO L130 PetriNetUnfolder]: 3962/7338 cut-off events. [2023-08-30 22:39:56,173 INFO L131 PetriNetUnfolder]: For 30404/30404 co-relation queries the response was YES. [2023-08-30 22:39:56,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30453 conditions, 7338 events. 3962/7338 cut-off events. For 30404/30404 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 43397 event pairs, 974 based on Foata normal form. 48/7351 useless extension candidates. Maximal degree in co-relation 24912. Up to 1607 conditions per place. [2023-08-30 22:39:56,218 INFO L137 encePairwiseOnDemand]: 280/290 looper letters, 246 selfloop transitions, 177 changer transitions 6/429 dead transitions. [2023-08-30 22:39:56,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 429 transitions, 5437 flow [2023-08-30 22:39:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 22:39:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 22:39:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2697 transitions. [2023-08-30 22:39:56,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465 [2023-08-30 22:39:56,221 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2697 transitions. [2023-08-30 22:39:56,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2697 transitions. [2023-08-30 22:39:56,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:39:56,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2697 transitions. [2023-08-30 22:39:56,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 134.85) internal successors, (2697), 20 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) [2023-08-30 22:39:56,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 290.0) internal successors, (6090), 21 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:56,229 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 290.0) internal successors, (6090), 21 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:56,229 INFO L175 Difference]: Start difference. First operand has 193 places, 254 transitions, 3198 flow. Second operand 20 states and 2697 transitions. [2023-08-30 22:39:56,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 429 transitions, 5437 flow [2023-08-30 22:39:56,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 429 transitions, 5122 flow, removed 104 selfloop flow, removed 6 redundant places. [2023-08-30 22:39:56,332 INFO L231 Difference]: Finished difference. Result has 211 places, 282 transitions, 3856 flow [2023-08-30 22:39:56,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=2941, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3856, PETRI_PLACES=211, PETRI_TRANSITIONS=282} [2023-08-30 22:39:56,332 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 177 predicate places. [2023-08-30 22:39:56,333 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 282 transitions, 3856 flow [2023-08-30 22:39:56,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 130.2941176470588) internal successors, (2215), 17 states have internal predecessors, (2215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:39:56,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:39:56,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:39:56,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 22:39:56,537 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,SelfDestructingSolverStorable11 [2023-08-30 22:39:56,540 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:39:56,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:39:56,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2131210369, now seen corresponding path program 1 times [2023-08-30 22:39:56,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:39:56,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030337341] [2023-08-30 22:39:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:56,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:39:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:57,427 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:39:57,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:39:57,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030337341] [2023-08-30 22:39:57,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030337341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:39:57,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932632816] [2023-08-30 22:39:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:39:57,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:39:57,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:39:57,429 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) [2023-08-30 22:39:57,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 22:39:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:39:57,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 80 conjunts are in the unsatisfiable core [2023-08-30 22:39:57,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:39:57,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-08-30 22:39:58,124 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 48 treesize of output 34 [2023-08-30 22:39:58,823 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-30 22:39:58,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 45 [2023-08-30 22:40:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:40:03,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:40:05,068 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 57 treesize of output 48 [2023-08-30 22:40:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:40:05,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932632816] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:40:05,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:40:05,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 20] total 60 [2023-08-30 22:40:05,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172086202] [2023-08-30 22:40:05,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:40:05,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-08-30 22:40:05,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:40:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-08-30 22:40:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=3404, Unknown=2, NotChecked=0, Total=3782 [2023-08-30 22:40:09,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:40:13,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:40:17,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:40:21,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:40:21,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 290 [2023-08-30 22:40:21,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 282 transitions, 3856 flow. Second operand has 62 states, 62 states have (on average 106.74193548387096) internal successors, (6618), 62 states have internal predecessors, (6618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:40:21,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:40:21,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 290 [2023-08-30 22:40:21,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:40:35,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-08-30 22:40:38,852 INFO L130 PetriNetUnfolder]: 5796/10830 cut-off events. [2023-08-30 22:40:38,852 INFO L131 PetriNetUnfolder]: For 51401/51401 co-relation queries the response was YES. [2023-08-30 22:40:38,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46700 conditions, 10830 events. 5796/10830 cut-off events. For 51401/51401 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 67803 event pairs, 1446 based on Foata normal form. 146/10941 useless extension candidates. Maximal degree in co-relation 38919. Up to 4394 conditions per place. [2023-08-30 22:40:38,945 INFO L137 encePairwiseOnDemand]: 272/290 looper letters, 379 selfloop transitions, 265 changer transitions 93/737 dead transitions. [2023-08-30 22:40:38,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 737 transitions, 8666 flow [2023-08-30 22:40:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-08-30 22:40:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-08-30 22:40:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 7671 transitions. [2023-08-30 22:40:38,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3833583208395802 [2023-08-30 22:40:38,952 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 7671 transitions. [2023-08-30 22:40:38,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 7671 transitions. [2023-08-30 22:40:38,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:40:38,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 7671 transitions. [2023-08-30 22:40:38,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 111.17391304347827) internal successors, (7671), 69 states have internal predecessors, (7671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:40:39,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 290.0) internal successors, (20300), 70 states have internal predecessors, (20300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:40:39,089 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 290.0) internal successors, (20300), 70 states have internal predecessors, (20300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:40:39,089 INFO L175 Difference]: Start difference. First operand has 211 places, 282 transitions, 3856 flow. Second operand 69 states and 7671 transitions. [2023-08-30 22:40:39,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 737 transitions, 8666 flow [2023-08-30 22:40:39,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 737 transitions, 8226 flow, removed 136 selfloop flow, removed 8 redundant places. [2023-08-30 22:40:39,266 INFO L231 Difference]: Finished difference. Result has 305 places, 437 transitions, 6609 flow [2023-08-30 22:40:39,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=3588, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=6609, PETRI_PLACES=305, PETRI_TRANSITIONS=437} [2023-08-30 22:40:39,267 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 271 predicate places. [2023-08-30 22:40:39,267 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 437 transitions, 6609 flow [2023-08-30 22:40:39,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 106.74193548387096) internal successors, (6618), 62 states have internal predecessors, (6618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:40:39,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:40:39,269 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:40:39,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 22:40:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:40:39,474 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:40:39,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:40:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1071599769, now seen corresponding path program 2 times [2023-08-30 22:40:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:40:39,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213460799] [2023-08-30 22:40:39,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:40:39,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:40:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:40:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:40:40,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:40:40,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213460799] [2023-08-30 22:40:40,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213460799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:40:40,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64316969] [2023-08-30 22:40:40,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 22:40:40,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:40:40,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:40:40,495 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) [2023-08-30 22:40:40,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 22:40:40,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:40:40,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:40:40,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 89 conjunts are in the unsatisfiable core [2023-08-30 22:40:40,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:40:40,686 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-30 22:40:40,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 22:40:40,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-30 22:40:40,851 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 21 treesize of output 21 [2023-08-30 22:40:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 22:40:41,107 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 30 treesize of output 25 [2023-08-30 22:40:41,500 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 56 treesize of output 32 [2023-08-30 22:40:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:40:41,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:40:43,283 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_497 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_497) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2023-08-30 22:40:43,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:40:43,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 22:40:43,299 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:40:43,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 52 [2023-08-30 22:40:43,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 22 [2023-08-30 22:40:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:40:43,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64316969] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:40:43,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:40:43,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 59 [2023-08-30 22:40:43,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897741269] [2023-08-30 22:40:43,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:40:43,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-08-30 22:40:43,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:40:43,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-08-30 22:40:43,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3326, Unknown=1, NotChecked=116, Total=3660 [2023-08-30 22:40:43,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 290 [2023-08-30 22:40:43,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 437 transitions, 6609 flow. Second operand has 61 states, 61 states have (on average 87.70491803278688) internal successors, (5350), 61 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:40:43,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:40:43,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 290 [2023-08-30 22:40:43,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:41:16,458 INFO L130 PetriNetUnfolder]: 10128/19108 cut-off events. [2023-08-30 22:41:16,459 INFO L131 PetriNetUnfolder]: For 148992/148992 co-relation queries the response was YES. [2023-08-30 22:41:16,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91730 conditions, 19108 events. 10128/19108 cut-off events. For 148992/148992 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 132307 event pairs, 1298 based on Foata normal form. 248/19305 useless extension candidates. Maximal degree in co-relation 83358. Up to 3540 conditions per place. [2023-08-30 22:41:16,627 INFO L137 encePairwiseOnDemand]: 268/290 looper letters, 488 selfloop transitions, 824 changer transitions 75/1387 dead transitions. [2023-08-30 22:41:16,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 1387 transitions, 18735 flow [2023-08-30 22:41:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2023-08-30 22:41:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2023-08-30 22:41:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 9991 transitions. [2023-08-30 22:41:16,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31607086365074344 [2023-08-30 22:41:16,638 INFO L72 ComplementDD]: Start complementDD. Operand 109 states and 9991 transitions. [2023-08-30 22:41:16,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 9991 transitions. [2023-08-30 22:41:16,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:41:16,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 109 states and 9991 transitions. [2023-08-30 22:41:16,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 110 states, 109 states have (on average 91.66055045871559) internal successors, (9991), 109 states have internal predecessors, (9991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:16,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 110 states, 110 states have (on average 290.0) internal successors, (31900), 110 states have internal predecessors, (31900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:16,670 INFO L81 ComplementDD]: Finished complementDD. Result has 110 states, 110 states have (on average 290.0) internal successors, (31900), 110 states have internal predecessors, (31900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:16,670 INFO L175 Difference]: Start difference. First operand has 305 places, 437 transitions, 6609 flow. Second operand 109 states and 9991 transitions. [2023-08-30 22:41:16,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 1387 transitions, 18735 flow [2023-08-30 22:41:17,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 1387 transitions, 17555 flow, removed 560 selfloop flow, removed 14 redundant places. [2023-08-30 22:41:17,204 INFO L231 Difference]: Finished difference. Result has 421 places, 905 transitions, 14606 flow [2023-08-30 22:41:17,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=6081, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=372, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=14606, PETRI_PLACES=421, PETRI_TRANSITIONS=905} [2023-08-30 22:41:17,204 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 387 predicate places. [2023-08-30 22:41:17,204 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 905 transitions, 14606 flow [2023-08-30 22:41:17,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 87.70491803278688) internal successors, (5350), 61 states have internal predecessors, (5350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:17,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:41:17,205 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2023-08-30 22:41:17,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 22:41:17,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:41:17,410 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:41:17,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:41:17,411 INFO L85 PathProgramCache]: Analyzing trace with hash 674057269, now seen corresponding path program 3 times [2023-08-30 22:41:17,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:41:17,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647935391] [2023-08-30 22:41:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:41:17,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:41:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:41:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 56 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:41:17,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:41:17,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647935391] [2023-08-30 22:41:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647935391] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:41:17,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142086705] [2023-08-30 22:41:17,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:41:17,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:41:17,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:41:17,511 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) [2023-08-30 22:41:17,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 22:41:17,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 22:41:17,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:41:17,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 22:41:17,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:41:17,700 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:41:17,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 22:41:17,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142086705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 22:41:17,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 22:41:17,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2023-08-30 22:41:17,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817391024] [2023-08-30 22:41:17,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 22:41:17,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 22:41:17,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:41:17,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 22:41:17,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-08-30 22:41:17,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 290 [2023-08-30 22:41:17,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 905 transitions, 14606 flow. Second operand has 8 states, 8 states have (on average 143.5) internal successors, (1148), 8 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:17,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:41:17,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 290 [2023-08-30 22:41:17,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:41:24,442 INFO L130 PetriNetUnfolder]: 11733/22330 cut-off events. [2023-08-30 22:41:24,442 INFO L131 PetriNetUnfolder]: For 599868/599881 co-relation queries the response was YES. [2023-08-30 22:41:24,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186035 conditions, 22330 events. 11733/22330 cut-off events. For 599868/599881 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 159899 event pairs, 2528 based on Foata normal form. 495/22797 useless extension candidates. Maximal degree in co-relation 181117. Up to 10456 conditions per place. [2023-08-30 22:41:24,673 INFO L137 encePairwiseOnDemand]: 286/290 looper letters, 589 selfloop transitions, 9 changer transitions 711/1417 dead transitions. [2023-08-30 22:41:24,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 1417 transitions, 25737 flow [2023-08-30 22:41:24,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 22:41:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 22:41:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1245 transitions. [2023-08-30 22:41:24,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5366379310344828 [2023-08-30 22:41:24,688 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1245 transitions. [2023-08-30 22:41:24,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1245 transitions. [2023-08-30 22:41:24,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:41:24,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1245 transitions. [2023-08-30 22:41:24,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 155.625) internal successors, (1245), 8 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:24,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:24,706 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 290.0) internal successors, (2610), 9 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:24,706 INFO L175 Difference]: Start difference. First operand has 421 places, 905 transitions, 14606 flow. Second operand 8 states and 1245 transitions. [2023-08-30 22:41:24,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 1417 transitions, 25737 flow [2023-08-30 22:41:25,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 1417 transitions, 23386 flow, removed 913 selfloop flow, removed 17 redundant places. [2023-08-30 22:41:25,739 INFO L231 Difference]: Finished difference. Result has 412 places, 518 transitions, 7311 flow [2023-08-30 22:41:25,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=11471, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=781, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7311, PETRI_PLACES=412, PETRI_TRANSITIONS=518} [2023-08-30 22:41:25,740 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 378 predicate places. [2023-08-30 22:41:25,740 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 518 transitions, 7311 flow [2023-08-30 22:41:25,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 143.5) internal successors, (1148), 8 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:25,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:41:25,740 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:41:25,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 22:41:25,945 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,SelfDestructingSolverStorable14 [2023-08-30 22:41:25,946 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:41:25,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:41:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash 161639399, now seen corresponding path program 2 times [2023-08-30 22:41:25,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:41:25,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585621073] [2023-08-30 22:41:25,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:41:25,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:41:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:41:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 22:41:26,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:41:26,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585621073] [2023-08-30 22:41:26,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585621073] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:41:26,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583456172] [2023-08-30 22:41:26,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 22:41:26,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:41:26,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:41:26,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:41:26,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 22:41:26,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 22:41:26,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:41:26,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 22:41:26,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:41:26,552 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 22:41:26,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:41:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 22:41:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583456172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:41:26,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:41:26,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2023-08-30 22:41:26,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762526076] [2023-08-30 22:41:26,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:41:26,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 22:41:26,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:41:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 22:41:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-08-30 22:41:26,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 290 [2023-08-30 22:41:26,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 518 transitions, 7311 flow. Second operand has 17 states, 17 states have (on average 131.47058823529412) internal successors, (2235), 17 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:26,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:41:26,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 290 [2023-08-30 22:41:26,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:41:30,608 INFO L130 PetriNetUnfolder]: 7075/13620 cut-off events. [2023-08-30 22:41:30,608 INFO L131 PetriNetUnfolder]: For 370647/370647 co-relation queries the response was YES. [2023-08-30 22:41:30,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116569 conditions, 13620 events. 7075/13620 cut-off events. For 370647/370647 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 90702 event pairs, 1308 based on Foata normal form. 16/13636 useless extension candidates. Maximal degree in co-relation 111205. Up to 4918 conditions per place. [2023-08-30 22:41:30,893 INFO L137 encePairwiseOnDemand]: 281/290 looper letters, 490 selfloop transitions, 278 changer transitions 43/811 dead transitions. [2023-08-30 22:41:30,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 811 transitions, 12447 flow [2023-08-30 22:41:30,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 22:41:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 22:41:30,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2868 transitions. [2023-08-30 22:41:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470935960591133 [2023-08-30 22:41:30,896 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2868 transitions. [2023-08-30 22:41:30,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2868 transitions. [2023-08-30 22:41:30,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:41:30,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2868 transitions. [2023-08-30 22:41:30,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 136.57142857142858) internal successors, (2868), 21 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:30,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 290.0) internal successors, (6380), 22 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:30,903 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 290.0) internal successors, (6380), 22 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:30,903 INFO L175 Difference]: Start difference. First operand has 412 places, 518 transitions, 7311 flow. Second operand 21 states and 2868 transitions. [2023-08-30 22:41:30,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 811 transitions, 12447 flow [2023-08-30 22:41:31,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 811 transitions, 11674 flow, removed 310 selfloop flow, removed 17 redundant places. [2023-08-30 22:41:31,497 INFO L231 Difference]: Finished difference. Result has 421 places, 556 transitions, 8254 flow [2023-08-30 22:41:31,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=6820, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8254, PETRI_PLACES=421, PETRI_TRANSITIONS=556} [2023-08-30 22:41:31,498 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 387 predicate places. [2023-08-30 22:41:31,499 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 556 transitions, 8254 flow [2023-08-30 22:41:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 131.47058823529412) internal successors, (2235), 17 states have internal predecessors, (2235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:31,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:41:31,499 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:41:31,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 22:41:31,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 22:41:31,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:41:31,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:41:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1587510751, now seen corresponding path program 3 times [2023-08-30 22:41:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:41:31,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123075263] [2023-08-30 22:41:31,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:41:31,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:41:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:41:31,937 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 22:41:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:41:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123075263] [2023-08-30 22:41:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123075263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:41:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41486116] [2023-08-30 22:41:31,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:41:31,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:41:31,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:41:31,941 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:41:31,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 22:41:32,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 22:41:32,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:41:32,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 22:41:32,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:41:32,119 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 22:41:32,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:41:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 43 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-30 22:41:32,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41486116] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:41:32,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:41:32,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 17 [2023-08-30 22:41:32,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646575000] [2023-08-30 22:41:32,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:41:32,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 22:41:32,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:41:32,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 22:41:32,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-08-30 22:41:32,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 290 [2023-08-30 22:41:32,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 556 transitions, 8254 flow. Second operand has 18 states, 18 states have (on average 131.33333333333334) internal successors, (2364), 18 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:32,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:41:32,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 290 [2023-08-30 22:41:32,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:41:35,946 INFO L130 PetriNetUnfolder]: 7047/13599 cut-off events. [2023-08-30 22:41:35,946 INFO L131 PetriNetUnfolder]: For 351161/351161 co-relation queries the response was YES. [2023-08-30 22:41:36,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115448 conditions, 13599 events. 7047/13599 cut-off events. For 351161/351161 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 91140 event pairs, 1573 based on Foata normal form. 8/13607 useless extension candidates. Maximal degree in co-relation 111530. Up to 4906 conditions per place. [2023-08-30 22:41:36,122 INFO L137 encePairwiseOnDemand]: 282/290 looper letters, 405 selfloop transitions, 260 changer transitions 44/709 dead transitions. [2023-08-30 22:41:36,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 709 transitions, 11371 flow [2023-08-30 22:41:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 22:41:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 22:41:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2602 transitions. [2023-08-30 22:41:36,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722323049001815 [2023-08-30 22:41:36,125 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2602 transitions. [2023-08-30 22:41:36,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2602 transitions. [2023-08-30 22:41:36,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:41:36,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2602 transitions. [2023-08-30 22:41:36,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 136.94736842105263) internal successors, (2602), 19 states have internal predecessors, (2602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:36,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 290.0) internal successors, (5800), 20 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:36,131 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 290.0) internal successors, (5800), 20 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:36,131 INFO L175 Difference]: Start difference. First operand has 421 places, 556 transitions, 8254 flow. Second operand 19 states and 2602 transitions. [2023-08-30 22:41:36,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 709 transitions, 11371 flow [2023-08-30 22:41:36,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 709 transitions, 10625 flow, removed 32 selfloop flow, removed 23 redundant places. [2023-08-30 22:41:36,764 INFO L231 Difference]: Finished difference. Result has 415 places, 552 transitions, 8011 flow [2023-08-30 22:41:36,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=7483, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8011, PETRI_PLACES=415, PETRI_TRANSITIONS=552} [2023-08-30 22:41:36,765 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 381 predicate places. [2023-08-30 22:41:36,765 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 552 transitions, 8011 flow [2023-08-30 22:41:36,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 131.33333333333334) internal successors, (2364), 18 states have internal predecessors, (2364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:41:36,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:41:36,765 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:41:36,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 22:41:36,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 22:41:36,970 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:41:36,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:41:36,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1088570660, now seen corresponding path program 3 times [2023-08-30 22:41:36,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:41:36,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462059377] [2023-08-30 22:41:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:41:36,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:41:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:41:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:41:38,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:41:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462059377] [2023-08-30 22:41:38,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462059377] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:41:38,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886681352] [2023-08-30 22:41:38,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 22:41:38,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:41:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:41:38,295 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:41:38,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 22:41:38,635 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 22:41:38,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:41:38,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 94 conjunts are in the unsatisfiable core [2023-08-30 22:41:38,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:41:38,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-30 22:41:39,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 22:41:39,223 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 72 treesize of output 43 [2023-08-30 22:41:39,610 INFO L321 Elim1Store]: treesize reduction 33, result has 43.1 percent of original size [2023-08-30 22:41:39,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 62 [2023-08-30 22:41:40,490 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 110 treesize of output 45 [2023-08-30 22:41:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:41:46,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:41:49,765 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 54 treesize of output 46 [2023-08-30 22:41:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:41:49,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886681352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:41:49,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:41:49,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 73 [2023-08-30 22:41:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537631422] [2023-08-30 22:41:49,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:41:49,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-08-30 22:41:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:41:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-08-30 22:41:49,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=5156, Unknown=2, NotChecked=0, Total=5402 [2023-08-30 22:41:52,167 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 [0] [2023-08-30 22:41:55,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:41:58,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:00,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:02,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:05,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:08,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:10,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:12,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:15,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:17,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:19,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:22,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:25,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:26,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:29,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:32,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:35,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:37,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:41,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:43,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:46,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:46,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 290 [2023-08-30 22:42:46,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 552 transitions, 8011 flow. Second operand has 74 states, 74 states have (on average 94.06756756756756) internal successors, (6961), 74 states have internal predecessors, (6961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:42:46,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:42:46,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 290 [2023-08-30 22:42:46,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 22:42:50,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:54,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:42:57,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:00,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:02,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:04,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:06,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:08,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:12,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:14,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:16,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:19,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:21,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:24,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:26,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:28,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:29,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:32,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:34,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:37,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:40,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:42,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:44,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:46,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:49,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:43:58,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:01,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:03,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:04,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:06,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:09,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:11,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:13,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:16,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:18,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:21,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:23,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:26,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:28,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:30,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:32,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:35,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:38,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:40,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:42,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:44,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:47,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:49,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:51,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:53,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:55,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:57,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:44:59,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:01,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:03,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:06,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:08,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:10,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:16,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:19,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:23,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:25,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:27,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:30,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:32,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:34,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:36,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:38,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:41,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:43,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:45,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:47,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:49,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:52,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:54,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:57,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:45:59,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:01,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:03,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:05,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:08,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:11,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:13,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:15,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:17,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:20,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:22,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:24,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:26,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:29,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:31,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:33,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:35,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:37,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:39,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:42,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:44,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:46,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:48,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:50,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:53,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:55,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:57,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:46:59,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:02,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:05,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:08,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:10,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:13,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:15,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:17,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:19,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:21,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:23,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:26,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:28,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:30,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:32,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:35,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:37,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:39,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:46,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:48,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:50,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:52,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:54,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:47:57,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:03,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:06,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:08,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:10,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:12,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:14,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:16,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:19,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:21,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:23,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:25,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:27,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:29,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:31,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:34,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:37,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:39,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:41,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:43,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:45,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:47,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:50,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:52,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:55,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:48:57,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:00,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:02,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:04,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:06,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:08,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:11,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:14,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:16,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:18,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:20,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:23,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:25,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:27,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:29,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:31,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:33,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:36,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:38,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:41,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:43,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:45,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:48,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:50,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:52,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:54,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:56,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:49:58,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:01,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:03,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:06,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:08,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:10,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:12,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:19,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:21,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:23,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:25,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:27,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:29,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:32,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:34,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:36,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:38,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:40,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:42,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:44,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:46,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:49,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:51,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:53,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:55,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:57,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:50:59,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:01,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:03,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:05,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:07,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:10,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:12,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:15,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:17,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:19,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:22,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:24,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:26,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:29,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:31,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:33,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:35,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:38,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:40,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:42,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:44,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:46,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:49,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:51,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:53,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:55,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:51:58,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:00,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:02,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:05,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:07,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:09,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:12,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:15,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:18,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:20,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:23,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:25,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:28,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:30,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:32,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:34,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:37,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:39,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:41,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:43,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:45,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:46,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:49,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:51,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:53,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:55,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:57,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:52:59,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:53:02,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 22:53:04,285 INFO L130 PetriNetUnfolder]: 7287/14906 cut-off events. [2023-08-30 22:53:04,285 INFO L131 PetriNetUnfolder]: For 257631/257631 co-relation queries the response was YES. [2023-08-30 22:53:04,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103685 conditions, 14906 events. 7287/14906 cut-off events. For 257631/257631 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 107949 event pairs, 787 based on Foata normal form. 72/14978 useless extension candidates. Maximal degree in co-relation 101795. Up to 3410 conditions per place. [2023-08-30 22:53:04,488 INFO L137 encePairwiseOnDemand]: 274/290 looper letters, 581 selfloop transitions, 588 changer transitions 391/1560 dead transitions. [2023-08-30 22:53:04,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 1560 transitions, 21794 flow [2023-08-30 22:53:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-08-30 22:53:04,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2023-08-30 22:53:04,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 13864 transitions. [2023-08-30 22:53:04,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343139619001688 [2023-08-30 22:53:04,503 INFO L72 ComplementDD]: Start complementDD. Operand 143 states and 13864 transitions. [2023-08-30 22:53:04,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 13864 transitions. [2023-08-30 22:53:04,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 22:53:04,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 143 states and 13864 transitions. [2023-08-30 22:53:04,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 144 states, 143 states have (on average 96.95104895104895) internal successors, (13864), 143 states have internal predecessors, (13864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:53:04,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 144 states, 144 states have (on average 290.0) internal successors, (41760), 144 states have internal predecessors, (41760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:53:04,548 INFO L81 ComplementDD]: Finished complementDD. Result has 144 states, 144 states have (on average 290.0) internal successors, (41760), 144 states have internal predecessors, (41760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:53:04,548 INFO L175 Difference]: Start difference. First operand has 415 places, 552 transitions, 8011 flow. Second operand 143 states and 13864 transitions. [2023-08-30 22:53:04,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 1560 transitions, 21794 flow [2023-08-30 22:53:05,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 1560 transitions, 21242 flow, removed 28 selfloop flow, removed 16 redundant places. [2023-08-30 22:53:05,181 INFO L231 Difference]: Finished difference. Result has 554 places, 716 transitions, 10895 flow [2023-08-30 22:53:05,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=7558, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=143, PETRI_FLOW=10895, PETRI_PLACES=554, PETRI_TRANSITIONS=716} [2023-08-30 22:53:05,182 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 520 predicate places. [2023-08-30 22:53:05,182 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 716 transitions, 10895 flow [2023-08-30 22:53:05,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 94.06756756756756) internal successors, (6961), 74 states have internal predecessors, (6961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:53:05,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 22:53:05,183 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 22:53:05,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-30 22:53:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 22:53:05,388 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-30 22:53:05,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 22:53:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1909042378, now seen corresponding path program 4 times [2023-08-30 22:53:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 22:53:05,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213174026] [2023-08-30 22:53:05,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 22:53:05,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 22:53:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 22:53:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:53:06,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 22:53:06,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213174026] [2023-08-30 22:53:06,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213174026] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 22:53:06,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745764889] [2023-08-30 22:53:06,677 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 22:53:06,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 22:53:06,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 22:53:06,678 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 22:53:06,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 22:53:06,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 22:53:06,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 22:53:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 107 conjunts are in the unsatisfiable core [2023-08-30 22:53:06,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 22:53:06,829 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-30 22:53:06,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 22:53:07,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-08-30 22:53:07,153 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 43 treesize of output 38 [2023-08-30 22:53:07,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 22:53:07,599 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 52 treesize of output 38 [2023-08-30 22:53:07,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 22:53:07,916 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 52 treesize of output 38 [2023-08-30 22:53:08,865 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 78 treesize of output 45 [2023-08-30 22:53:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:53:16,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 22:53:19,104 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:53:19,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-30 22:53:19,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 22:53:19,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 52 [2023-08-30 22:53:19,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 28 treesize of output 22 [2023-08-30 22:53:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 22:53:19,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745764889] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 22:53:19,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 22:53:19,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 26] total 80 [2023-08-30 22:53:19,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584549271] [2023-08-30 22:53:19,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 22:53:19,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-08-30 22:53:19,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 22:53:19,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-08-30 22:53:19,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=6225, Unknown=1, NotChecked=0, Total=6642 [2023-08-30 22:53:30,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 22:53:34,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 290 [2023-08-30 22:53:34,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 716 transitions, 10895 flow. Second operand has 82 states, 82 states have (on average 104.86585365853658) internal successors, (8599), 82 states have internal predecessors, (8599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 22:53:34,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 22:53:34,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 290 [2023-08-30 22:53:34,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15