/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 16:41:53,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 16:41:53,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 16:41:53,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 16:41:53,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 16:41:53,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 16:41:53,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 16:41:53,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 16:41:53,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 16:41:53,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 16:41:53,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 16:41:53,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 16:41:53,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 16:41:53,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 16:41:53,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 16:41:53,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 16:41:53,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 16:41:53,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 16:41:53,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 16:41:53,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 16:41:53,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 16:41:53,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 16:41:53,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 16:41:53,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 16:41:53,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 16:41:53,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 16:41:53,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 16:41:53,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 16:41:53,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 16:41:53,357 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 16:41:53,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 16:41:53,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 16:41:53,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 16:41:53,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 16:41:53,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 16:41:53,364 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 16:41:53,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 16:41:53,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 16:41:53,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 16:41:53,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 16:41:53,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 16:41:53,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-12 16:41:53,391 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 16:41:53,391 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 16:41:53,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 16:41:53,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 16:41:53,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 16:41:53,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 16:41:53,394 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 16:41:53,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 16:41:53,394 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 16:41:53,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 16:41:53,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 16:41:53,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 16:41:53,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 16:41:53,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 16:41:53,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 16:41:53,395 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 16:41:53,395 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 16:41:53,395 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 16:41:53,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 16:41:53,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 16:41:53,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 16:41:53,396 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 16:41:53,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 16:41:53,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:41:53,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 16:41:53,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 16:41:53,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 16:41:53,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 16:41:53,397 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 16:41:53,397 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 16:41:53,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 16:41:53,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 16:41:53,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 16:41:53,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 16:41:53,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 16:41:53,679 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 16:41:53,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2022-12-12 16:41:54,587 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 16:41:54,782 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 16:41:54,782 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2022-12-12 16:41:54,786 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda0e69dd/394cab42818b44988817c596d10cec58/FLAGae9f34a62 [2022-12-12 16:41:54,795 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bda0e69dd/394cab42818b44988817c596d10cec58 [2022-12-12 16:41:54,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 16:41:54,798 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 16:41:54,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 16:41:54,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 16:41:54,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 16:41:54,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:41:54" (1/1) ... [2022-12-12 16:41:54,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750ce872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:54, skipping insertion in model container [2022-12-12 16:41:54,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 04:41:54" (1/1) ... [2022-12-12 16:41:54,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 16:41:54,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 16:41:54,965 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-12 16:41:54,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:41:54,978 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 16:41:55,008 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c[2975,2988] [2022-12-12 16:41:55,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 16:41:55,018 INFO L208 MainTranslator]: Completed translation [2022-12-12 16:41:55,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55 WrapperNode [2022-12-12 16:41:55,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 16:41:55,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 16:41:55,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 16:41:55,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 16:41:55,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,062 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 204 [2022-12-12 16:41:55,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 16:41:55,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 16:41:55,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 16:41:55,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 16:41:55,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 16:41:55,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 16:41:55,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 16:41:55,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 16:41:55,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (1/1) ... [2022-12-12 16:41:55,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 16:41:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:41:55,132 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) [2022-12-12 16:41:55,138 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 [2022-12-12 16:41:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 16:41:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 16:41:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 16:41:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 16:41:55,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 16:41:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 16:41:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 16:41:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 16:41:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 16:41:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 16:41:55,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 16:41:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 16:41:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 16:41:55,165 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 16:41:55,277 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 16:41:55,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 16:41:55,589 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 16:41:55,595 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 16:41:55,595 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 16:41:55,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:41:55 BoogieIcfgContainer [2022-12-12 16:41:55,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 16:41:55,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 16:41:55,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 16:41:55,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 16:41:55,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 04:41:54" (1/3) ... [2022-12-12 16:41:55,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7230d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:41:55, skipping insertion in model container [2022-12-12 16:41:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 04:41:55" (2/3) ... [2022-12-12 16:41:55,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7230d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 04:41:55, skipping insertion in model container [2022-12-12 16:41:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 04:41:55" (3/3) ... [2022-12-12 16:41:55,602 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2022-12-12 16:41:55,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 16:41:55,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 16:41:55,613 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 16:41:55,725 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 16:41:55,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 247 transitions, 510 flow [2022-12-12 16:41:55,800 INFO L130 PetriNetUnfolder]: 24/245 cut-off events. [2022-12-12 16:41:55,801 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 16:41:55,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 245 events. 24/245 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 480 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2022-12-12 16:41:55,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 247 transitions, 510 flow [2022-12-12 16:41:55,810 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 220 places, 237 transitions, 486 flow [2022-12-12 16:41:55,811 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 16:41:55,821 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 220 places, 237 transitions, 486 flow [2022-12-12 16:41:55,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 237 transitions, 486 flow [2022-12-12 16:41:55,860 INFO L130 PetriNetUnfolder]: 24/237 cut-off events. [2022-12-12 16:41:55,860 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 16:41:55,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 24/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 460 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 161. Up to 2 conditions per place. [2022-12-12 16:41:55,866 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 220 places, 237 transitions, 486 flow [2022-12-12 16:41:55,866 INFO L226 LiptonReduction]: Number of co-enabled transitions 6892 [2022-12-12 16:42:17,261 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 197 (called from [L 310] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-12 16:42:18,152 INFO L241 LiptonReduction]: Total number of compositions: 216 [2022-12-12 16:42:18,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 16:42:18,164 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@171c848f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 16:42:18,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 16:42:18,169 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2022-12-12 16:42:18,169 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 16:42:18,169 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:18,170 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:18,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:18,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:18,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1113317458, now seen corresponding path program 1 times [2022-12-12 16:42:18,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:18,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943888205] [2022-12-12 16:42:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:18,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943888205] [2022-12-12 16:42:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943888205] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:18,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:18,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 16:42:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438557585] [2022-12-12 16:42:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:18,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 16:42:18,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:18,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 16:42:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 16:42:18,528 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-12 16:42:18,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:18,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:18,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-12 16:42:18,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:18,613 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2022-12-12 16:42:18,613 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-12 16:42:18,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2022-12-12 16:42:18,616 INFO L137 encePairwiseOnDemand]: 14/17 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2022-12-12 16:42:18,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2022-12-12 16:42:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 16:42:18,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 16:42:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2022-12-12 16:42:18,624 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2022-12-12 16:42:18,625 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 23 transitions. [2022-12-12 16:42:18,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2022-12-12 16:42:18,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 16:42:18,628 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2022-12-12 16:42:18,629 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2022-12-12 16:42:18,633 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2022-12-12 16:42:18,633 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2022-12-12 16:42:18,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:18,633 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:18,633 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:18,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 16:42:18,634 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:18,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:18,635 INFO L85 PathProgramCache]: Analyzing trace with hash 2010882342, now seen corresponding path program 1 times [2022-12-12 16:42:18,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:18,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890058577] [2022-12-12 16:42:18,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:18,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:42:18,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:18,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890058577] [2022-12-12 16:42:18,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890058577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:18,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:18,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:42:18,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432536868] [2022-12-12 16:42:18,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:18,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:42:18,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:42:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:42:18,822 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 16:42:18,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:18,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:18,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 16:42:18,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:19,302 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2022-12-12 16:42:19,306 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 16:42:19,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 371 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2022-12-12 16:42:19,309 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2022-12-12 16:42:19,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2022-12-12 16:42:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 40 transitions. [2022-12-12 16:42:19,311 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-12-12 16:42:19,311 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 40 transitions. [2022-12-12 16:42:19,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2022-12-12 16:42:19,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-12 16:42:19,313 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2022-12-12 16:42:19,313 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2022-12-12 16:42:19,313 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2022-12-12 16:42:19,313 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2022-12-12 16:42:19,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:19,314 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:19,314 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 16:42:19,314 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:19,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:19,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1631921684, now seen corresponding path program 2 times [2022-12-12 16:42:19,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:19,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585340254] [2022-12-12 16:42:19,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:42:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:19,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585340254] [2022-12-12 16:42:19,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585340254] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:19,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:19,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:42:19,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290877600] [2022-12-12 16:42:19,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:19,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:42:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:42:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:42:19,524 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 16:42:19,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:19,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:19,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 16:42:19,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:19,678 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2022-12-12 16:42:19,678 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-12-12 16:42:19,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 208 events. 111/208 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 661 event pairs, 42 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 584. Up to 133 conditions per place. [2022-12-12 16:42:19,680 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2022-12-12 16:42:19,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 252 flow [2022-12-12 16:42:19,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:19,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 36 transitions. [2022-12-12 16:42:19,681 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4235294117647059 [2022-12-12 16:42:19,681 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 36 transitions. [2022-12-12 16:42:19,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 252 flow [2022-12-12 16:42:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 235 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-12-12 16:42:19,683 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2022-12-12 16:42:19,683 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2022-12-12 16:42:19,683 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2022-12-12 16:42:19,683 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2022-12-12 16:42:19,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:19,684 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:19,684 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:19,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 16:42:19,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1448159212, now seen corresponding path program 3 times [2022-12-12 16:42:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:19,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926842805] [2022-12-12 16:42:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:19,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:42:19,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:19,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926842805] [2022-12-12 16:42:19,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926842805] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:19,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:19,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:42:19,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201335587] [2022-12-12 16:42:19,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:19,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:42:19,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:42:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:42:19,813 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 16:42:19,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:19,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:19,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 16:42:19,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:20,344 INFO L130 PetriNetUnfolder]: 121/224 cut-off events. [2022-12-12 16:42:20,344 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2022-12-12 16:42:20,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 224 events. 121/224 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 738 event pairs, 44 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 764. Up to 121 conditions per place. [2022-12-12 16:42:20,346 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2022-12-12 16:42:20,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 321 flow [2022-12-12 16:42:20,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:20,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 41 transitions. [2022-12-12 16:42:20,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2022-12-12 16:42:20,347 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 41 transitions. [2022-12-12 16:42:20,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 321 flow [2022-12-12 16:42:20,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 297 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-12-12 16:42:20,348 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2022-12-12 16:42:20,349 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2022-12-12 16:42:20,349 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2022-12-12 16:42:20,349 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2022-12-12 16:42:20,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:20,349 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:20,349 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:20,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 16:42:20,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:20,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1331431458, now seen corresponding path program 4 times [2022-12-12 16:42:20,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:20,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021631141] [2022-12-12 16:42:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:20,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:42:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:20,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021631141] [2022-12-12 16:42:20,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021631141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:20,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:20,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:42:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016703688] [2022-12-12 16:42:20,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:42:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:42:20,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:42:20,545 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 16:42:20,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:20,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:20,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 16:42:20,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:20,701 INFO L130 PetriNetUnfolder]: 117/220 cut-off events. [2022-12-12 16:42:20,701 INFO L131 PetriNetUnfolder]: For 547/547 co-relation queries the response was YES. [2022-12-12 16:42:20,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 220 events. 117/220 cut-off events. For 547/547 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 728 event pairs, 50 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 824. Up to 177 conditions per place. [2022-12-12 16:42:20,702 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 32 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2022-12-12 16:42:20,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 375 flow [2022-12-12 16:42:20,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:20,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:20,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2022-12-12 16:42:20,703 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2022-12-12 16:42:20,703 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 35 transitions. [2022-12-12 16:42:20,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 375 flow [2022-12-12 16:42:20,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 362 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-12 16:42:20,706 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2022-12-12 16:42:20,706 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2022-12-12 16:42:20,706 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2022-12-12 16:42:20,706 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2022-12-12 16:42:20,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:20,706 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:20,707 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:20,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 16:42:20,707 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:20,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:20,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1576826180, now seen corresponding path program 5 times [2022-12-12 16:42:20,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:20,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688133383] [2022-12-12 16:42:20,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:20,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:42:20,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:20,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688133383] [2022-12-12 16:42:20,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688133383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:20,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:20,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:42:20,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592754008] [2022-12-12 16:42:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:20,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:42:20,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:20,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:42:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:42:20,845 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 16:42:20,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:20,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:20,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 16:42:20,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:20,955 INFO L130 PetriNetUnfolder]: 118/223 cut-off events. [2022-12-12 16:42:20,955 INFO L131 PetriNetUnfolder]: For 712/712 co-relation queries the response was YES. [2022-12-12 16:42:20,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 223 events. 118/223 cut-off events. For 712/712 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 741 event pairs, 38 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 934. Up to 123 conditions per place. [2022-12-12 16:42:20,956 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2022-12-12 16:42:20,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 442 flow [2022-12-12 16:42:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:20,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-12-12 16:42:20,958 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4588235294117647 [2022-12-12 16:42:20,958 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 39 transitions. [2022-12-12 16:42:20,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 442 flow [2022-12-12 16:42:20,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 388 flow, removed 15 selfloop flow, removed 2 redundant places. [2022-12-12 16:42:20,961 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2022-12-12 16:42:20,961 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2022-12-12 16:42:20,962 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2022-12-12 16:42:20,963 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2022-12-12 16:42:20,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:20,963 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:20,963 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 16:42:20,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash -721907598, now seen corresponding path program 6 times [2022-12-12 16:42:20,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:20,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192710926] [2022-12-12 16:42:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:20,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:42:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:21,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192710926] [2022-12-12 16:42:21,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192710926] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 16:42:21,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 16:42:21,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 16:42:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779596556] [2022-12-12 16:42:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 16:42:21,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 16:42:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 16:42:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 16:42:21,086 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 16:42:21,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:21,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:21,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 16:42:21,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:21,215 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2022-12-12 16:42:21,215 INFO L131 PetriNetUnfolder]: For 705/705 co-relation queries the response was YES. [2022-12-12 16:42:21,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 216 events. 117/216 cut-off events. For 705/705 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 687 event pairs, 49 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 870. Up to 170 conditions per place. [2022-12-12 16:42:21,216 INFO L137 encePairwiseOnDemand]: 11/17 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2022-12-12 16:42:21,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 414 flow [2022-12-12 16:42:21,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 16:42:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 16:42:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 35 transitions. [2022-12-12 16:42:21,217 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2022-12-12 16:42:21,217 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 35 transitions. [2022-12-12 16:42:21,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 414 flow [2022-12-12 16:42:21,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-12 16:42:21,219 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2022-12-12 16:42:21,219 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2022-12-12 16:42:21,219 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2022-12-12 16:42:21,220 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2022-12-12 16:42:21,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:21,220 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:42:21,220 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:42:21,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 16:42:21,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:42:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:42:21,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1817107100, now seen corresponding path program 1 times [2022-12-12 16:42:21,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:42:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668942779] [2022-12-12 16:42:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:21,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:42:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:42:21,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:42:21,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668942779] [2022-12-12 16:42:21,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668942779] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:42:21,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994027473] [2022-12-12 16:42:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:42:21,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:42:21,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:42:21,376 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) [2022-12-12 16:42:21,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 16:42:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:42:21,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-12 16:42:21,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:42:21,531 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 [2022-12-12 16:42:21,569 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 6 treesize of output 5 [2022-12-12 16:42:21,622 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 6 treesize of output 5 [2022-12-12 16:42:21,963 INFO L321 Elim1Store]: treesize reduction 57, result has 14.9 percent of original size [2022-12-12 16:42:21,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 340 treesize of output 323 [2022-12-12 16:42:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:42:22,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 16:42:36,473 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse0 (not (< c_~x2~0 c_~size~0))) (.cse6 (not (<= 0 c_~x2~0))) (.cse2 (+ (* c_~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse5 (+ (* c_~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (or .cse0 (forall ((v_ArrVal_137 (Array Int Int)) (v_ArrVal_136 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_136) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_137) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse4 (select .cse1 .cse5))) (let ((.cse3 (select .cse1 (+ (* .cse4 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (or (= (select .cse1 .cse2) (select .cse1 (+ (* .cse3 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (<= c_~size~0 .cse3) (not (<= 0 .cse4)) (not (< .cse4 c_~size~0)) (< .cse3 0)))))) .cse6) (or .cse0 .cse6 (forall ((v_ArrVal_137 (Array Int Int)) (v_ArrVal_136 (Array Int Int))) (let ((.cse8 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_136) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_137) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (let ((.cse7 (select .cse8 .cse5))) (or (not (<= 0 .cse7)) (not (< .cse7 c_~size~0)) (= (select .cse8 .cse2) (select .cse8 (+ (* .cse7 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))))))))) (< |c_ULTIMATE.start_create_fresh_int_array_~i~2#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) is different from false [2022-12-12 16:42:36,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:42:36,493 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 142 treesize of output 94 [2022-12-12 16:42:36,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:42:36,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 558 treesize of output 522 [2022-12-12 16:42:36,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:42:36,533 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 478 treesize of output 462 [2022-12-12 16:42:36,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 16:42:36,556 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 418 treesize of output 342 [2022-12-12 16:42:37,033 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-12 16:42:37,165 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-12 16:42:37,166 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 278 treesize of output 1 [2022-12-12 16:42:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-12 16:42:37,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994027473] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 16:42:37,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 16:42:37,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2022-12-12 16:42:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073111376] [2022-12-12 16:42:37,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 16:42:37,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 16:42:37,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 16:42:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 16:42:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=341, Unknown=3, NotChecked=38, Total=462 [2022-12-12 16:42:37,218 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 17 [2022-12-12 16:42:37,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:42:37,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 16:42:37,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 17 [2022-12-12 16:42:37,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 16:42:50,117 WARN L233 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 122 DAG size of output: 106 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 16:42:52,144 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 [1] [2022-12-12 16:42:54,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-12 16:42:59,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-12 16:43:31,576 WARN L233 SmtUtils]: Spent 28.60s on a formula simplification. DAG size of input: 120 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 16:43:49,534 WARN L233 SmtUtils]: Spent 12.27s on a formula simplification. DAG size of input: 197 DAG size of output: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 16:44:04,622 WARN L233 SmtUtils]: Spent 12.23s on a formula simplification. DAG size of input: 123 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-12 16:44:06,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-12 16:44:07,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-12 16:44:23,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-12 16:44:24,894 INFO L130 PetriNetUnfolder]: 555/1029 cut-off events. [2022-12-12 16:44:24,894 INFO L131 PetriNetUnfolder]: For 2766/2766 co-relation queries the response was YES. [2022-12-12 16:44:24,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4020 conditions, 1029 events. 555/1029 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5421 event pairs, 23 based on Foata normal form. 19/874 useless extension candidates. Maximal degree in co-relation 3539. Up to 325 conditions per place. [2022-12-12 16:44:24,898 INFO L137 encePairwiseOnDemand]: 6/17 looper letters, 155 selfloop transitions, 78 changer transitions 63/296 dead transitions. [2022-12-12 16:44:24,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 296 transitions, 2218 flow [2022-12-12 16:44:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-12 16:44:24,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-12 16:44:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 252 transitions. [2022-12-12 16:44:24,903 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4235294117647059 [2022-12-12 16:44:24,903 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 294 flow. Second operand 35 states and 252 transitions. [2022-12-12 16:44:24,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 296 transitions, 2218 flow [2022-12-12 16:44:24,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 296 transitions, 2066 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-12-12 16:44:24,915 INFO L231 Difference]: Finished difference. Result has 103 places, 113 transitions, 1127 flow [2022-12-12 16:44:24,915 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1127, PETRI_PLACES=103, PETRI_TRANSITIONS=113} [2022-12-12 16:44:24,918 INFO L295 CegarLoopForPetriNet]: 21 programPoint places, 82 predicate places. [2022-12-12 16:44:24,918 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 113 transitions, 1127 flow [2022-12-12 16:44:24,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 16:44:24,918 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 16:44:24,918 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 16:44:24,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-12 16:44:25,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:44:25,123 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 16:44:25,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 16:44:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash -788814634, now seen corresponding path program 2 times [2022-12-12 16:44:25,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 16:44:25,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603076555] [2022-12-12 16:44:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 16:44:25,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 16:44:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 16:44:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 16:44:25,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 16:44:25,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603076555] [2022-12-12 16:44:25,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603076555] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 16:44:25,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190408147] [2022-12-12 16:44:25,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 16:44:25,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 16:44:25,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 16:44:25,371 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) [2022-12-12 16:44:25,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 16:44:25,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 16:44:25,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 16:44:25,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-12 16:44:25,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 16:44:25,526 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 [2022-12-12 16:44:25,561 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 6 treesize of output 5 [2022-12-12 16:44:25,591 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 6 treesize of output 5 [2022-12-12 16:44:25,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-12 16:44:25,952 INFO L321 Elim1Store]: treesize reduction 38, result has 20.8 percent of original size [2022-12-12 16:44:25,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 32 [2022-12-12 16:44:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 16:44:25,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-12-12 16:56:25,810 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 16:56:25,814 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 16:56:26,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 16:56:26,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown