/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 18:23:30,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 18:23:30,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 18:23:30,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 18:23:30,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 18:23:30,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 18:23:30,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 18:23:30,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 18:23:30,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 18:23:30,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 18:23:30,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 18:23:30,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 18:23:30,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 18:23:30,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 18:23:30,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 18:23:30,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 18:23:30,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 18:23:30,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 18:23:30,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 18:23:30,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 18:23:30,418 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 18:23:30,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 18:23:30,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 18:23:30,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 18:23:30,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 18:23:30,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 18:23:30,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 18:23:30,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 18:23:30,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 18:23:30,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 18:23:30,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 18:23:30,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 18:23:30,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 18:23:30,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 18:23:30,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 18:23:30,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 18:23:30,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 18:23:30,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 18:23:30,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 18:23:30,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 18:23:30,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 18:23:30,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-05 18:23:30,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 18:23:30,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 18:23:30,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 18:23:30,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 18:23:30,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 18:23:30,484 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 18:23:30,484 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 18:23:30,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 18:23:30,484 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 18:23:30,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 18:23:30,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 18:23:30,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 18:23:30,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 18:23:30,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 18:23:30,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 18:23:30,486 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 18:23:30,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 18:23:30,486 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 18:23:30,486 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 18:23:30,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 18:23:30,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 18:23:30,487 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 18:23:30,487 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 18:23:30,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:23:30,487 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 18:23:30,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 18:23:30,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 18:23:30,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 18:23:30,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 18:23:30,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 18:23:30,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 18:23:30,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 18:23:30,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 18:23:30,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 18:23:30,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 18:23:30,826 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 18:23:30,826 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 18:23:30,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-1.i [2022-12-05 18:23:31,932 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 18:23:32,251 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 18:23:32,251 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i [2022-12-05 18:23:32,283 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca763a666/df143c4bb6e84365b9a9d55859a0525b/FLAGd71024ea0 [2022-12-05 18:23:32,301 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca763a666/df143c4bb6e84365b9a9d55859a0525b [2022-12-05 18:23:32,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 18:23:32,304 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 18:23:32,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 18:23:32,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 18:23:32,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 18:23:32,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:32,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71efaffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32, skipping insertion in model container [2022-12-05 18:23:32,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:32,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 18:23:32,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 18:23:32,784 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2022-12-05 18:23:32,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:23:32,829 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 18:23:32,879 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-1.i[41520,41533] [2022-12-05 18:23:32,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 18:23:32,957 INFO L208 MainTranslator]: Completed translation [2022-12-05 18:23:32,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32 WrapperNode [2022-12-05 18:23:32,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 18:23:32,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 18:23:32,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 18:23:32,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 18:23:32,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:32,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,037 INFO L138 Inliner]: procedures = 277, calls = 43, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 152 [2022-12-05 18:23:33,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 18:23:33,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 18:23:33,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 18:23:33,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 18:23:33,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 18:23:33,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 18:23:33,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 18:23:33,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 18:23:33,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (1/1) ... [2022-12-05 18:23:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 18:23:33,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:23:33,112 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) [2022-12-05 18:23:33,136 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 [2022-12-05 18:23:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-05 18:23:33,152 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-05 18:23:33,152 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-05 18:23:33,152 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 18:23:33,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 18:23:33,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 18:23:33,155 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 18:23:33,268 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 18:23:33,269 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 18:23:33,507 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 18:23:33,523 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 18:23:33,524 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-05 18:23:33,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:23:33 BoogieIcfgContainer [2022-12-05 18:23:33,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 18:23:33,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 18:23:33,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 18:23:33,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 18:23:33,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 06:23:32" (1/3) ... [2022-12-05 18:23:33,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbdb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:23:33, skipping insertion in model container [2022-12-05 18:23:33,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 06:23:32" (2/3) ... [2022-12-05 18:23:33,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47bbdb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 06:23:33, skipping insertion in model container [2022-12-05 18:23:33,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 06:23:33" (3/3) ... [2022-12-05 18:23:33,543 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2022-12-05 18:23:33,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 18:23:33,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-05 18:23:33,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 18:23:33,691 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 18:23:33,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 154 transitions, 324 flow [2022-12-05 18:23:33,832 INFO L130 PetriNetUnfolder]: 10/152 cut-off events. [2022-12-05 18:23:33,833 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 18:23:33,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 152 events. 10/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 353 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 110. Up to 3 conditions per place. [2022-12-05 18:23:33,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 154 transitions, 324 flow [2022-12-05 18:23:33,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 143 transitions, 295 flow [2022-12-05 18:23:33,867 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 18:23:33,875 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;@41e3293a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 18:23:33,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-05 18:23:33,921 INFO L130 PetriNetUnfolder]: 5/121 cut-off events. [2022-12-05 18:23:33,921 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-05 18:23:33,922 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:33,922 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:33,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash 915872, now seen corresponding path program 1 times [2022-12-05 18:23:33,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:33,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386186830] [2022-12-05 18:23:33,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:33,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:34,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:34,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386186830] [2022-12-05 18:23:34,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386186830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:34,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:34,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:23:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915234918] [2022-12-05 18:23:34,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:23:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:23:34,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:23:34,422 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 154 [2022-12-05 18:23:34,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 143 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:34,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:34,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 154 [2022-12-05 18:23:34,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:34,597 INFO L130 PetriNetUnfolder]: 88/607 cut-off events. [2022-12-05 18:23:34,598 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-12-05 18:23:34,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 607 events. 88/607 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2681 event pairs, 32 based on Foata normal form. 69/612 useless extension candidates. Maximal degree in co-relation 663. Up to 111 conditions per place. [2022-12-05 18:23:34,628 INFO L137 encePairwiseOnDemand]: 144/154 looper letters, 20 selfloop transitions, 3 changer transitions 0/141 dead transitions. [2022-12-05 18:23:34,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 141 transitions, 343 flow [2022-12-05 18:23:34,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:23:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:23:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2022-12-05 18:23:34,646 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9199134199134199 [2022-12-05 18:23:34,648 INFO L175 Difference]: Start difference. First operand has 140 places, 143 transitions, 295 flow. Second operand 3 states and 425 transitions. [2022-12-05 18:23:34,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 141 transitions, 343 flow [2022-12-05 18:23:34,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 141 transitions, 335 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 18:23:34,657 INFO L231 Difference]: Finished difference. Result has 136 places, 135 transitions, 289 flow [2022-12-05 18:23:34,659 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=289, PETRI_PLACES=136, PETRI_TRANSITIONS=135} [2022-12-05 18:23:34,662 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, -4 predicate places. [2022-12-05 18:23:34,662 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 135 transitions, 289 flow [2022-12-05 18:23:34,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:34,663 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:34,664 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:34,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 18:23:34,664 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:34,666 INFO L85 PathProgramCache]: Analyzing trace with hash 341206032, now seen corresponding path program 1 times [2022-12-05 18:23:34,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:34,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724742223] [2022-12-05 18:23:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:34,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:34,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724742223] [2022-12-05 18:23:34,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724742223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:34,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:34,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 18:23:34,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922538162] [2022-12-05 18:23:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:34,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 18:23:34,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:34,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 18:23:34,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 18:23:34,884 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 154 [2022-12-05 18:23:34,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 135 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:34,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:34,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 154 [2022-12-05 18:23:34,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:35,025 INFO L130 PetriNetUnfolder]: 34/519 cut-off events. [2022-12-05 18:23:35,026 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-05 18:23:35,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 519 events. 34/519 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1832 event pairs, 11 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 368. Up to 45 conditions per place. [2022-12-05 18:23:35,031 INFO L137 encePairwiseOnDemand]: 149/154 looper letters, 16 selfloop transitions, 4 changer transitions 0/143 dead transitions. [2022-12-05 18:23:35,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 143 transitions, 350 flow [2022-12-05 18:23:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 18:23:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 18:23:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2022-12-05 18:23:35,035 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9042207792207793 [2022-12-05 18:23:35,037 INFO L175 Difference]: Start difference. First operand has 136 places, 135 transitions, 289 flow. Second operand 4 states and 557 transitions. [2022-12-05 18:23:35,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 143 transitions, 350 flow [2022-12-05 18:23:35,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 143 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:23:35,048 INFO L231 Difference]: Finished difference. Result has 140 places, 138 transitions, 314 flow [2022-12-05 18:23:35,048 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=140, PETRI_TRANSITIONS=138} [2022-12-05 18:23:35,049 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 0 predicate places. [2022-12-05 18:23:35,049 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 138 transitions, 314 flow [2022-12-05 18:23:35,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:35,050 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:35,050 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:35,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 18:23:35,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:35,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash 639377253, now seen corresponding path program 1 times [2022-12-05 18:23:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:35,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561240401] [2022-12-05 18:23:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:35,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:35,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:35,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561240401] [2022-12-05 18:23:35,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561240401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:35,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:35,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:23:35,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686191403] [2022-12-05 18:23:35,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:35,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:23:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:35,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:23:35,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:23:35,182 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 154 [2022-12-05 18:23:35,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 138 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:35,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:35,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 154 [2022-12-05 18:23:35,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:35,352 INFO L130 PetriNetUnfolder]: 127/1096 cut-off events. [2022-12-05 18:23:35,353 INFO L131 PetriNetUnfolder]: For 90/100 co-relation queries the response was YES. [2022-12-05 18:23:35,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1096 events. 127/1096 cut-off events. For 90/100 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5865 event pairs, 33 based on Foata normal form. 12/1035 useless extension candidates. Maximal degree in co-relation 1186. Up to 135 conditions per place. [2022-12-05 18:23:35,362 INFO L137 encePairwiseOnDemand]: 148/154 looper letters, 25 selfloop transitions, 4 changer transitions 0/150 dead transitions. [2022-12-05 18:23:35,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 150 transitions, 405 flow [2022-12-05 18:23:35,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:23:35,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:23:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2022-12-05 18:23:35,363 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9090909090909091 [2022-12-05 18:23:35,364 INFO L175 Difference]: Start difference. First operand has 140 places, 138 transitions, 314 flow. Second operand 3 states and 420 transitions. [2022-12-05 18:23:35,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 150 transitions, 405 flow [2022-12-05 18:23:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 150 transitions, 403 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:23:35,371 INFO L231 Difference]: Finished difference. Result has 143 places, 142 transitions, 354 flow [2022-12-05 18:23:35,371 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=143, PETRI_TRANSITIONS=142} [2022-12-05 18:23:35,372 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 3 predicate places. [2022-12-05 18:23:35,372 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 142 transitions, 354 flow [2022-12-05 18:23:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:35,373 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:35,373 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:35,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 18:23:35,374 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash 871675093, now seen corresponding path program 1 times [2022-12-05 18:23:35,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:35,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956828068] [2022-12-05 18:23:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:35,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:35,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956828068] [2022-12-05 18:23:35,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956828068] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:23:35,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517101155] [2022-12-05 18:23:35,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:35,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:23:35,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:23:35,578 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) [2022-12-05 18:23:35,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 18:23:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:35,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-05 18:23:35,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:23:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:35,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:23:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:36,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517101155] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:23:36,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:23:36,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-05 18:23:36,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211389544] [2022-12-05 18:23:36,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:23:36,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-05 18:23:36,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-05 18:23:36,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-12-05 18:23:36,103 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 154 [2022-12-05 18:23:36,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 142 transitions, 354 flow. Second operand has 10 states, 10 states have (on average 130.5) internal successors, (1305), 10 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:36,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:36,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 154 [2022-12-05 18:23:36,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:36,555 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([419] L1009-->L1011: Formula: (< 0 v_~top~0_8) InVars {~top~0=v_~top~0_8} OutVars{~top~0=v_~top~0_8} AuxVars[] AssignedVars[][164], [171#true, 26#L1023-4true, Black: 160#(= |t1Thread1of1ForFork0_push_#res#1| 0), Black: 163#(and (= |t1Thread1of1ForFork0_push_#res#1| 0) (= |t1Thread1of1ForFork0_#t~ret41#1| 0)), t2Thread1of1ForFork1InUse, 28#L946-2true, 168#(<= 1 ~top~0), Black: 166#true, 100#L1011true, Black: 156#(= ~top~0 0)]) [2022-12-05 18:23:36,555 INFO L382 tUnfolder$Statistics]: this new event has 160 ancestors and is cut-off event [2022-12-05 18:23:36,555 INFO L385 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-12-05 18:23:36,556 INFO L385 tUnfolder$Statistics]: existing Event has 136 ancestors and is cut-off event [2022-12-05 18:23:36,556 INFO L385 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-12-05 18:23:36,556 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([420] L1009-->L1009-1: Formula: (not (< 0 v_~top~0_7)) InVars {~top~0=v_~top~0_7} OutVars{~top~0=v_~top~0_7} AuxVars[] AssignedVars[][165], [26#L1023-4true, Black: 160#(= |t1Thread1of1ForFork0_push_#res#1| 0), 200#(<= ~top~0 0), Black: 163#(and (= |t1Thread1of1ForFork0_push_#res#1| 0) (= |t1Thread1of1ForFork0_#t~ret41#1| 0)), t2Thread1of1ForFork1InUse, 28#L946-2true, 76#L1009-1true, Black: 168#(<= 1 ~top~0), 166#true, Black: 156#(= ~top~0 0)]) [2022-12-05 18:23:36,556 INFO L382 tUnfolder$Statistics]: this new event has 160 ancestors and is cut-off event [2022-12-05 18:23:36,556 INFO L385 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-12-05 18:23:36,556 INFO L385 tUnfolder$Statistics]: existing Event has 141 ancestors and is cut-off event [2022-12-05 18:23:36,556 INFO L385 tUnfolder$Statistics]: existing Event has 136 ancestors and is cut-off event [2022-12-05 18:23:36,613 INFO L130 PetriNetUnfolder]: 382/2588 cut-off events. [2022-12-05 18:23:36,613 INFO L131 PetriNetUnfolder]: For 1007/1067 co-relation queries the response was YES. [2022-12-05 18:23:36,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 2588 events. 382/2588 cut-off events. For 1007/1067 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 18527 event pairs, 38 based on Foata normal form. 41/2479 useless extension candidates. Maximal degree in co-relation 3577. Up to 300 conditions per place. [2022-12-05 18:23:36,652 INFO L137 encePairwiseOnDemand]: 145/154 looper letters, 86 selfloop transitions, 46 changer transitions 1/252 dead transitions. [2022-12-05 18:23:36,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 252 transitions, 1036 flow [2022-12-05 18:23:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 18:23:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 18:23:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2435 transitions. [2022-12-05 18:23:36,658 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8784271284271284 [2022-12-05 18:23:36,658 INFO L175 Difference]: Start difference. First operand has 143 places, 142 transitions, 354 flow. Second operand 18 states and 2435 transitions. [2022-12-05 18:23:36,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 252 transitions, 1036 flow [2022-12-05 18:23:36,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 252 transitions, 974 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-05 18:23:36,669 INFO L231 Difference]: Finished difference. Result has 164 places, 197 transitions, 725 flow [2022-12-05 18:23:36,669 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=725, PETRI_PLACES=164, PETRI_TRANSITIONS=197} [2022-12-05 18:23:36,671 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 24 predicate places. [2022-12-05 18:23:36,671 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 197 transitions, 725 flow [2022-12-05 18:23:36,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 130.5) internal successors, (1305), 10 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:36,672 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:36,672 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:36,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 18:23:36,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:23:36,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:36,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1334797701, now seen corresponding path program 1 times [2022-12-05 18:23:36,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:36,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523335217] [2022-12-05 18:23:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:36,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:37,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:37,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523335217] [2022-12-05 18:23:37,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523335217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:37,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:37,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 18:23:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827638278] [2022-12-05 18:23:37,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:37,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 18:23:37,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 18:23:37,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 18:23:37,044 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 154 [2022-12-05 18:23:37,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 197 transitions, 725 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:37,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:37,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 154 [2022-12-05 18:23:37,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:37,168 INFO L130 PetriNetUnfolder]: 54/944 cut-off events. [2022-12-05 18:23:37,168 INFO L131 PetriNetUnfolder]: For 239/239 co-relation queries the response was YES. [2022-12-05 18:23:37,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 944 events. 54/944 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 4201 event pairs, 9 based on Foata normal form. 18/919 useless extension candidates. Maximal degree in co-relation 1008. Up to 51 conditions per place. [2022-12-05 18:23:37,174 INFO L137 encePairwiseOnDemand]: 150/154 looper letters, 12 selfloop transitions, 4 changer transitions 0/156 dead transitions. [2022-12-05 18:23:37,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 502 flow [2022-12-05 18:23:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 18:23:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 18:23:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2022-12-05 18:23:37,176 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8961038961038961 [2022-12-05 18:23:37,176 INFO L175 Difference]: Start difference. First operand has 164 places, 197 transitions, 725 flow. Second operand 3 states and 414 transitions. [2022-12-05 18:23:37,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 502 flow [2022-12-05 18:23:37,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 156 transitions, 480 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-12-05 18:23:37,182 INFO L231 Difference]: Finished difference. Result has 154 places, 154 transitions, 449 flow [2022-12-05 18:23:37,182 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=154, PETRI_TRANSITIONS=154} [2022-12-05 18:23:37,184 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 14 predicate places. [2022-12-05 18:23:37,184 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 154 transitions, 449 flow [2022-12-05 18:23:37,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:37,185 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:37,185 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:37,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 18:23:37,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:37,186 INFO L85 PathProgramCache]: Analyzing trace with hash -567721371, now seen corresponding path program 1 times [2022-12-05 18:23:37,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:37,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625875709] [2022-12-05 18:23:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:37,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:37,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:38,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:38,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:38,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625875709] [2022-12-05 18:23:38,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625875709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:38,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:38,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-12-05 18:23:38,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984958875] [2022-12-05 18:23:38,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:38,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-05 18:23:38,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:38,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-05 18:23:38,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2022-12-05 18:23:38,541 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 154 [2022-12-05 18:23:38,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 154 transitions, 449 flow. Second operand has 24 states, 24 states have (on average 77.54166666666667) internal successors, (1861), 24 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:38,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:38,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 154 [2022-12-05 18:23:38,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:42,005 INFO L130 PetriNetUnfolder]: 1122/3956 cut-off events. [2022-12-05 18:23:42,005 INFO L131 PetriNetUnfolder]: For 907/907 co-relation queries the response was YES. [2022-12-05 18:23:42,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7938 conditions, 3956 events. 1122/3956 cut-off events. For 907/907 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 28330 event pairs, 171 based on Foata normal form. 20/3827 useless extension candidates. Maximal degree in co-relation 4802. Up to 1458 conditions per place. [2022-12-05 18:23:42,037 INFO L137 encePairwiseOnDemand]: 117/154 looper letters, 249 selfloop transitions, 59 changer transitions 33/406 dead transitions. [2022-12-05 18:23:42,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 406 transitions, 1817 flow [2022-12-05 18:23:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-05 18:23:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-05 18:23:42,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3611 transitions. [2022-12-05 18:23:42,048 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5329102715466352 [2022-12-05 18:23:42,049 INFO L175 Difference]: Start difference. First operand has 154 places, 154 transitions, 449 flow. Second operand 44 states and 3611 transitions. [2022-12-05 18:23:42,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 406 transitions, 1817 flow [2022-12-05 18:23:42,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 406 transitions, 1813 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 18:23:42,068 INFO L231 Difference]: Finished difference. Result has 235 places, 209 transitions, 932 flow [2022-12-05 18:23:42,068 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=932, PETRI_PLACES=235, PETRI_TRANSITIONS=209} [2022-12-05 18:23:42,071 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 95 predicate places. [2022-12-05 18:23:42,072 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 209 transitions, 932 flow [2022-12-05 18:23:42,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 77.54166666666667) internal successors, (1861), 24 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:42,073 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:42,073 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:42,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 18:23:42,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -429903839, now seen corresponding path program 2 times [2022-12-05 18:23:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:42,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562677997] [2022-12-05 18:23:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:43,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:43,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562677997] [2022-12-05 18:23:43,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562677997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:43,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:43,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-12-05 18:23:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640923043] [2022-12-05 18:23:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:43,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-05 18:23:43,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-05 18:23:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-12-05 18:23:43,614 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 154 [2022-12-05 18:23:43,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 209 transitions, 932 flow. Second operand has 27 states, 27 states have (on average 66.55555555555556) internal successors, (1797), 27 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:43,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:43,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 154 [2022-12-05 18:23:43,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:47,358 INFO L130 PetriNetUnfolder]: 1758/6262 cut-off events. [2022-12-05 18:23:47,358 INFO L131 PetriNetUnfolder]: For 5041/5044 co-relation queries the response was YES. [2022-12-05 18:23:47,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15787 conditions, 6262 events. 1758/6262 cut-off events. For 5041/5044 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 48448 event pairs, 451 based on Foata normal form. 15/6144 useless extension candidates. Maximal degree in co-relation 10466. Up to 2351 conditions per place. [2022-12-05 18:23:47,415 INFO L137 encePairwiseOnDemand]: 116/154 looper letters, 289 selfloop transitions, 61 changer transitions 26/433 dead transitions. [2022-12-05 18:23:47,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 433 transitions, 2725 flow [2022-12-05 18:23:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-05 18:23:47,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-12-05 18:23:47,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2514 transitions. [2022-12-05 18:23:47,423 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46641929499072354 [2022-12-05 18:23:47,423 INFO L175 Difference]: Start difference. First operand has 235 places, 209 transitions, 932 flow. Second operand 35 states and 2514 transitions. [2022-12-05 18:23:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 433 transitions, 2725 flow [2022-12-05 18:23:47,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 433 transitions, 2713 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-12-05 18:23:47,455 INFO L231 Difference]: Finished difference. Result has 283 places, 244 transitions, 1407 flow [2022-12-05 18:23:47,455 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1407, PETRI_PLACES=283, PETRI_TRANSITIONS=244} [2022-12-05 18:23:47,456 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 143 predicate places. [2022-12-05 18:23:47,457 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 244 transitions, 1407 flow [2022-12-05 18:23:47,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 66.55555555555556) internal successors, (1797), 27 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:47,459 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:47,459 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 18:23:47,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash -869088289, now seen corresponding path program 3 times [2022-12-05 18:23:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:47,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471395513] [2022-12-05 18:23:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:47,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:48,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:48,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471395513] [2022-12-05 18:23:48,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471395513] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 18:23:48,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 18:23:48,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-12-05 18:23:48,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217288457] [2022-12-05 18:23:48,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:48,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-05 18:23:48,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-05 18:23:48,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-12-05 18:23:48,825 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2022-12-05 18:23:48,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 244 transitions, 1407 flow. Second operand has 28 states, 28 states have (on average 65.46428571428571) internal successors, (1833), 28 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:48,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:48,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2022-12-05 18:23:48,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:23:52,975 INFO L130 PetriNetUnfolder]: 2029/7291 cut-off events. [2022-12-05 18:23:52,975 INFO L131 PetriNetUnfolder]: For 8104/8107 co-relation queries the response was YES. [2022-12-05 18:23:53,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19367 conditions, 7291 events. 2029/7291 cut-off events. For 8104/8107 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 59660 event pairs, 336 based on Foata normal form. 13/7150 useless extension candidates. Maximal degree in co-relation 11792. Up to 2260 conditions per place. [2022-12-05 18:23:53,035 INFO L137 encePairwiseOnDemand]: 118/154 looper letters, 291 selfloop transitions, 77 changer transitions 26/451 dead transitions. [2022-12-05 18:23:53,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 451 transitions, 3181 flow [2022-12-05 18:23:53,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-05 18:23:53,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-12-05 18:23:53,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2416 transitions. [2022-12-05 18:23:53,040 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4614209320091673 [2022-12-05 18:23:53,040 INFO L175 Difference]: Start difference. First operand has 283 places, 244 transitions, 1407 flow. Second operand 34 states and 2416 transitions. [2022-12-05 18:23:53,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 451 transitions, 3181 flow [2022-12-05 18:23:53,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 451 transitions, 3129 flow, removed 7 selfloop flow, removed 14 redundant places. [2022-12-05 18:23:53,081 INFO L231 Difference]: Finished difference. Result has 317 places, 262 transitions, 1794 flow [2022-12-05 18:23:53,082 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1355, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1794, PETRI_PLACES=317, PETRI_TRANSITIONS=262} [2022-12-05 18:23:53,082 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 177 predicate places. [2022-12-05 18:23:53,082 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 262 transitions, 1794 flow [2022-12-05 18:23:53,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 65.46428571428571) internal successors, (1833), 28 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:53,083 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:23:53,084 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:23:53,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 18:23:53,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:23:53,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:23:53,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1615155237, now seen corresponding path program 1 times [2022-12-05 18:23:53,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:23:53,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006175907] [2022-12-05 18:23:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:53,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:23:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:54,637 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:54,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:23:54,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006175907] [2022-12-05 18:23:54,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006175907] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:23:54,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252554829] [2022-12-05 18:23:54,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:23:54,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:23:54,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:23:54,640 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) [2022-12-05 18:23:54,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 18:23:54,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:23:54,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-05 18:23:54,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:23:55,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-12-05 18:23:56,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 23 [2022-12-05 18:23:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:23:57,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:23:57,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2022-12-05 18:23:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 18:23:58,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252554829] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-05 18:23:58,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-05 18:23:58,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [26, 26] total 68 [2022-12-05 18:23:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468883923] [2022-12-05 18:23:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 18:23:58,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-05 18:23:58,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:23:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-05 18:23:58,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=4315, Unknown=0, NotChecked=0, Total=4556 [2022-12-05 18:23:58,182 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 154 [2022-12-05 18:23:58,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 262 transitions, 1794 flow. Second operand has 22 states, 22 states have (on average 78.63636363636364) internal successors, (1730), 22 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:23:58,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:23:58,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 154 [2022-12-05 18:23:58,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:24:04,678 INFO L130 PetriNetUnfolder]: 2737/9899 cut-off events. [2022-12-05 18:24:04,678 INFO L131 PetriNetUnfolder]: For 14604/14607 co-relation queries the response was YES. [2022-12-05 18:24:04,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27109 conditions, 9899 events. 2737/9899 cut-off events. For 14604/14607 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 88369 event pairs, 409 based on Foata normal form. 9/9686 useless extension candidates. Maximal degree in co-relation 14703. Up to 1518 conditions per place. [2022-12-05 18:24:04,771 INFO L137 encePairwiseOnDemand]: 121/154 looper letters, 281 selfloop transitions, 210 changer transitions 3/559 dead transitions. [2022-12-05 18:24:04,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 559 transitions, 4315 flow [2022-12-05 18:24:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-05 18:24:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-12-05 18:24:04,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 5204 transitions. [2022-12-05 18:24:04,779 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5198801198801198 [2022-12-05 18:24:04,779 INFO L175 Difference]: Start difference. First operand has 317 places, 262 transitions, 1794 flow. Second operand 65 states and 5204 transitions. [2022-12-05 18:24:04,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 559 transitions, 4315 flow [2022-12-05 18:24:04,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 559 transitions, 4249 flow, removed 8 selfloop flow, removed 18 redundant places. [2022-12-05 18:24:04,845 INFO L231 Difference]: Finished difference. Result has 380 places, 381 transitions, 3283 flow [2022-12-05 18:24:04,845 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=1728, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=3283, PETRI_PLACES=380, PETRI_TRANSITIONS=381} [2022-12-05 18:24:04,846 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 240 predicate places. [2022-12-05 18:24:04,846 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 381 transitions, 3283 flow [2022-12-05 18:24:04,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 78.63636363636364) internal successors, (1730), 22 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:24:04,848 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:24:04,848 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:24:04,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 18:24:05,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-05 18:24:05,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:24:05,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:24:05,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1357939585, now seen corresponding path program 2 times [2022-12-05 18:24:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:24:05,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161500053] [2022-12-05 18:24:05,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:24:05,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:24:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:24:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:24:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:24:06,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161500053] [2022-12-05 18:24:06,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161500053] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:24:06,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917811953] [2022-12-05 18:24:06,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 18:24:06,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:24:06,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:24:06,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:24:06,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 18:24:06,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-05 18:24:06,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:24:06,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 63 conjunts are in the unsatisfiable core [2022-12-05 18:24:06,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:24:07,080 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-05 18:24:07,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-05 18:24:07,094 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 18:24:07,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-05 18:24:07,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-12-05 18:24:07,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 54 [2022-12-05 18:24:08,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 23 [2022-12-05 18:24:08,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-05 18:24:08,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:24:09,565 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_244 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_244) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2022-12-05 18:24:09,630 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 18:24:09,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-05 18:24:09,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 18:24:09,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-12-05 18:24:09,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-12-05 18:24:10,607 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-05 18:24:10,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-12-05 18:24:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 1 not checked. [2022-12-05 18:24:10,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917811953] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:24:10,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:24:10,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 26] total 76 [2022-12-05 18:24:10,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28974547] [2022-12-05 18:24:10,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:24:10,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-12-05 18:24:10,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:24:10,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-12-05 18:24:10,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=5264, Unknown=1, NotChecked=146, Total=5700 [2022-12-05 18:24:10,619 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2022-12-05 18:24:10,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 381 transitions, 3283 flow. Second operand has 76 states, 76 states have (on average 66.30263157894737) internal successors, (5039), 76 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:24:10,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:24:10,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2022-12-05 18:24:10,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:24:53,597 INFO L130 PetriNetUnfolder]: 3917/14211 cut-off events. [2022-12-05 18:24:53,597 INFO L131 PetriNetUnfolder]: For 31041/31041 co-relation queries the response was YES. [2022-12-05 18:24:53,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43847 conditions, 14211 events. 3917/14211 cut-off events. For 31041/31041 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 139051 event pairs, 161 based on Foata normal form. 20/13942 useless extension candidates. Maximal degree in co-relation 26728. Up to 2222 conditions per place. [2022-12-05 18:24:53,774 INFO L137 encePairwiseOnDemand]: 110/154 looper letters, 474 selfloop transitions, 516 changer transitions 22/1069 dead transitions. [2022-12-05 18:24:53,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 1069 transitions, 9378 flow [2022-12-05 18:24:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-12-05 18:24:53,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2022-12-05 18:24:53,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 10685 transitions. [2022-12-05 18:24:53,789 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4363718042963326 [2022-12-05 18:24:53,790 INFO L175 Difference]: Start difference. First operand has 380 places, 381 transitions, 3283 flow. Second operand 159 states and 10685 transitions. [2022-12-05 18:24:53,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 1069 transitions, 9378 flow [2022-12-05 18:24:54,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1069 transitions, 8272 flow, removed 525 selfloop flow, removed 9 redundant places. [2022-12-05 18:24:54,038 INFO L231 Difference]: Finished difference. Result has 559 places, 677 transitions, 6255 flow [2022-12-05 18:24:54,039 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=159, PETRI_FLOW=6255, PETRI_PLACES=559, PETRI_TRANSITIONS=677} [2022-12-05 18:24:54,040 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 419 predicate places. [2022-12-05 18:24:54,040 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 677 transitions, 6255 flow [2022-12-05 18:24:54,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 66.30263157894737) internal successors, (5039), 76 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:24:54,042 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:24:54,042 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:24:54,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 18:24:54,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:24:54,249 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:24:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:24:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1368540643, now seen corresponding path program 2 times [2022-12-05 18:24:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:24:54,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898945011] [2022-12-05 18:24:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:24:54,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:24:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:24:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:24:54,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:24:54,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898945011] [2022-12-05 18:24:54,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898945011] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:24:54,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421318138] [2022-12-05 18:24:54,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 18:24:54,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:24:54,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:24:54,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:24:54,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 18:24:54,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 18:24:54,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:24:54,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:24:54,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:24:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:24:54,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:24:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 9 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:24:54,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421318138] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:24:54,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:24:54,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-12-05 18:24:54,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363619641] [2022-12-05 18:24:54,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:24:54,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-05 18:24:54,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:24:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-05 18:24:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-05 18:24:54,945 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 154 [2022-12-05 18:24:54,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 677 transitions, 6255 flow. Second operand has 13 states, 13 states have (on average 130.84615384615384) internal successors, (1701), 13 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:24:54,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:24:54,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 154 [2022-12-05 18:24:54,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:24:58,122 INFO L130 PetriNetUnfolder]: 1122/9829 cut-off events. [2022-12-05 18:24:58,122 INFO L131 PetriNetUnfolder]: For 40197/40394 co-relation queries the response was YES. [2022-12-05 18:24:58,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32745 conditions, 9829 events. 1122/9829 cut-off events. For 40197/40394 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 92872 event pairs, 251 based on Foata normal form. 33/9520 useless extension candidates. Maximal degree in co-relation 25794. Up to 812 conditions per place. [2022-12-05 18:24:58,270 INFO L137 encePairwiseOnDemand]: 147/154 looper letters, 221 selfloop transitions, 132 changer transitions 1/825 dead transitions. [2022-12-05 18:24:58,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 825 transitions, 8315 flow [2022-12-05 18:24:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-05 18:24:58,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-05 18:24:58,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2399 transitions. [2022-12-05 18:24:58,277 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8654401154401155 [2022-12-05 18:24:58,277 INFO L175 Difference]: Start difference. First operand has 559 places, 677 transitions, 6255 flow. Second operand 18 states and 2399 transitions. [2022-12-05 18:24:58,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 825 transitions, 8315 flow [2022-12-05 18:24:58,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 825 transitions, 7407 flow, removed 256 selfloop flow, removed 29 redundant places. [2022-12-05 18:24:58,577 INFO L231 Difference]: Finished difference. Result has 544 places, 716 transitions, 6138 flow [2022-12-05 18:24:58,579 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5455, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6138, PETRI_PLACES=544, PETRI_TRANSITIONS=716} [2022-12-05 18:24:58,580 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 404 predicate places. [2022-12-05 18:24:58,580 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 716 transitions, 6138 flow [2022-12-05 18:24:58,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 130.84615384615384) internal successors, (1701), 13 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:24:58,584 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:24:58,584 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:24:58,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 18:24:58,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:24:58,791 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:24:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:24:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1470105133, now seen corresponding path program 1 times [2022-12-05 18:24:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:24:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592046626] [2022-12-05 18:24:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:24:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:24:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:24:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-05 18:24:59,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:24:59,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592046626] [2022-12-05 18:24:59,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592046626] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:24:59,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850733554] [2022-12-05 18:24:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:24:59,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:24:59,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:24:59,178 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:24:59,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 18:24:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:24:59,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 18:24:59,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:24:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-05 18:24:59,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:24:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 6 proven. 46 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-05 18:24:59,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850733554] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:24:59,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:24:59,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-12-05 18:24:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114846659] [2022-12-05 18:24:59,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:24:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-05 18:24:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:24:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-05 18:24:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-12-05 18:24:59,833 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 154 [2022-12-05 18:24:59,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 716 transitions, 6138 flow. Second operand has 16 states, 16 states have (on average 129.375) internal successors, (2070), 16 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:24:59,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:24:59,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 154 [2022-12-05 18:24:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:25:03,240 INFO L130 PetriNetUnfolder]: 1244/9987 cut-off events. [2022-12-05 18:25:03,240 INFO L131 PetriNetUnfolder]: For 39057/39218 co-relation queries the response was YES. [2022-12-05 18:25:03,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32506 conditions, 9987 events. 1244/9987 cut-off events. For 39057/39218 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 93709 event pairs, 288 based on Foata normal form. 28/9673 useless extension candidates. Maximal degree in co-relation 29030. Up to 600 conditions per place. [2022-12-05 18:25:03,380 INFO L137 encePairwiseOnDemand]: 144/154 looper letters, 138 selfloop transitions, 224 changer transitions 1/824 dead transitions. [2022-12-05 18:25:03,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 824 transitions, 7793 flow [2022-12-05 18:25:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-05 18:25:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-05 18:25:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2862 transitions. [2022-12-05 18:25:03,383 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8447461629279811 [2022-12-05 18:25:03,383 INFO L175 Difference]: Start difference. First operand has 544 places, 716 transitions, 6138 flow. Second operand 22 states and 2862 transitions. [2022-12-05 18:25:03,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 824 transitions, 7793 flow [2022-12-05 18:25:03,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 824 transitions, 7454 flow, removed 91 selfloop flow, removed 10 redundant places. [2022-12-05 18:25:03,599 INFO L231 Difference]: Finished difference. Result has 559 places, 745 transitions, 6695 flow [2022-12-05 18:25:03,600 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=5772, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6695, PETRI_PLACES=559, PETRI_TRANSITIONS=745} [2022-12-05 18:25:03,601 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 419 predicate places. [2022-12-05 18:25:03,601 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 745 transitions, 6695 flow [2022-12-05 18:25:03,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 129.375) internal successors, (2070), 16 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:25:03,601 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:25:03,602 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:25:03,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 18:25:03,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-05 18:25:03,803 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:25:03,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:25:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1424819590, now seen corresponding path program 1 times [2022-12-05 18:25:03,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:25:03,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663952619] [2022-12-05 18:25:03,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:25:03,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:25:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:25:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:25:05,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:25:05,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663952619] [2022-12-05 18:25:05,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663952619] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:25:05,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3010199] [2022-12-05 18:25:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:25:05,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:25:05,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:25:05,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:25:05,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-05 18:25:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:25:05,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 86 conjunts are in the unsatisfiable core [2022-12-05 18:25:05,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:25:06,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-12-05 18:25:07,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 18:25:07,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-12-05 18:25:08,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 23 [2022-12-05 18:25:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:25:08,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:25:11,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2022-12-05 18:25:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:25:12,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3010199] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:25:12,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:25:12,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 34, 32] total 91 [2022-12-05 18:25:12,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804294313] [2022-12-05 18:25:12,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:25:12,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-12-05 18:25:12,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:25:12,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-12-05 18:25:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=7517, Unknown=0, NotChecked=0, Total=8190 [2022-12-05 18:25:12,597 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 154 [2022-12-05 18:25:12,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 745 transitions, 6695 flow. Second operand has 91 states, 91 states have (on average 78.31868131868131) internal successors, (7127), 91 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:25:12,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:25:12,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 154 [2022-12-05 18:25:12,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:25:37,497 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] [2022-12-05 18:26:05,197 INFO L130 PetriNetUnfolder]: 7907/28138 cut-off events. [2022-12-05 18:26:05,198 INFO L131 PetriNetUnfolder]: For 401560/401628 co-relation queries the response was YES. [2022-12-05 18:26:06,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144628 conditions, 28138 events. 7907/28138 cut-off events. For 401560/401628 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 291766 event pairs, 1416 based on Foata normal form. 129/27716 useless extension candidates. Maximal degree in co-relation 120468. Up to 7147 conditions per place. [2022-12-05 18:26:06,147 INFO L137 encePairwiseOnDemand]: 114/154 looper letters, 1478 selfloop transitions, 765 changer transitions 150/2458 dead transitions. [2022-12-05 18:26:06,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 745 places, 2458 transitions, 28001 flow [2022-12-05 18:26:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2022-12-05 18:26:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2022-12-05 18:26:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 15017 transitions. [2022-12-05 18:26:06,161 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.521459823598861 [2022-12-05 18:26:06,161 INFO L175 Difference]: Start difference. First operand has 559 places, 745 transitions, 6695 flow. Second operand 187 states and 15017 transitions. [2022-12-05 18:26:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 745 places, 2458 transitions, 28001 flow [2022-12-05 18:26:06,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 2458 transitions, 27541 flow, removed 155 selfloop flow, removed 8 redundant places. [2022-12-05 18:26:06,902 INFO L231 Difference]: Finished difference. Result has 841 places, 1359 transitions, 15309 flow [2022-12-05 18:26:06,904 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=6459, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=745, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=187, PETRI_FLOW=15309, PETRI_PLACES=841, PETRI_TRANSITIONS=1359} [2022-12-05 18:26:06,905 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 701 predicate places. [2022-12-05 18:26:06,906 INFO L495 AbstractCegarLoop]: Abstraction has has 841 places, 1359 transitions, 15309 flow [2022-12-05 18:26:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 78.31868131868131) internal successors, (7127), 91 states have internal predecessors, (7127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:26:06,911 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:26:06,911 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:26:06,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-05 18:26:07,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:26:07,123 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:26:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:26:07,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1382442850, now seen corresponding path program 2 times [2022-12-05 18:26:07,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:26:07,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053961696] [2022-12-05 18:26:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:26:07,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:26:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:26:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:26:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:26:09,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053961696] [2022-12-05 18:26:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053961696] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:26:09,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669320727] [2022-12-05 18:26:09,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-05 18:26:09,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:26:09,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:26:09,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:26:09,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-05 18:26:09,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 18:26:09,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:26:09,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 94 conjunts are in the unsatisfiable core [2022-12-05 18:26:09,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:26:09,671 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-05 18:26:09,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-05 18:26:09,686 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 18:26:09,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-05 18:26:10,304 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 13 treesize of output 9 [2022-12-05 18:26:10,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-12-05 18:26:11,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 18:26:11,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2022-12-05 18:26:11,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-05 18:26:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:26:12,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:26:16,305 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_~top~0_35 Int) (v_ArrVal_476 (Array Int Int))) (or (not (< 0 v_~top~0_35)) (< (+ c_~top~0 1) v_~top~0_35) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_476) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* v_~top~0_35 4))) 4294967296) 4294967294)))) is different from false [2022-12-05 18:26:16,354 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 18:26:16,355 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 30 treesize of output 31 [2022-12-05 18:26:16,367 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 18:26:16,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2022-12-05 18:26:16,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2022-12-05 18:26:17,777 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 18:26:17,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 48 [2022-12-05 18:26:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:26:17,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669320727] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:26:17,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:26:17,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 37, 36] total 96 [2022-12-05 18:26:17,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064188138] [2022-12-05 18:26:17,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:26:17,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-05 18:26:17,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:26:17,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-05 18:26:17,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=738, Invalid=8194, Unknown=2, NotChecked=186, Total=9120 [2022-12-05 18:26:17,926 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 154 [2022-12-05 18:26:17,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 841 places, 1359 transitions, 15309 flow. Second operand has 96 states, 96 states have (on average 67.10416666666667) internal successors, (6442), 96 states have internal predecessors, (6442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:26:17,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:26:17,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 154 [2022-12-05 18:26:17,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 18:26:43,626 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] [2022-12-05 18:27:18,687 INFO L130 PetriNetUnfolder]: 10276/36486 cut-off events. [2022-12-05 18:27:18,687 INFO L131 PetriNetUnfolder]: For 656887/656935 co-relation queries the response was YES. [2022-12-05 18:27:20,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214791 conditions, 36486 events. 10276/36486 cut-off events. For 656887/656935 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 394292 event pairs, 2001 based on Foata normal form. 28/35824 useless extension candidates. Maximal degree in co-relation 214448. Up to 12523 conditions per place. [2022-12-05 18:27:21,025 INFO L137 encePairwiseOnDemand]: 113/154 looper letters, 1952 selfloop transitions, 552 changer transitions 108/2669 dead transitions. [2022-12-05 18:27:21,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 2669 transitions, 35811 flow [2022-12-05 18:27:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-12-05 18:27:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-12-05 18:27:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 7892 transitions. [2022-12-05 18:27:21,033 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4616824616824617 [2022-12-05 18:27:21,033 INFO L175 Difference]: Start difference. First operand has 841 places, 1359 transitions, 15309 flow. Second operand 111 states and 7892 transitions. [2022-12-05 18:27:21,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 2669 transitions, 35811 flow [2022-12-05 18:27:23,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 2669 transitions, 34293 flow, removed 727 selfloop flow, removed 19 redundant places. [2022-12-05 18:27:23,761 INFO L231 Difference]: Finished difference. Result has 994 places, 1665 transitions, 20445 flow [2022-12-05 18:27:23,762 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=14411, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=20445, PETRI_PLACES=994, PETRI_TRANSITIONS=1665} [2022-12-05 18:27:23,763 INFO L294 CegarLoopForPetriNet]: 140 programPoint places, 854 predicate places. [2022-12-05 18:27:23,763 INFO L495 AbstractCegarLoop]: Abstraction has has 994 places, 1665 transitions, 20445 flow [2022-12-05 18:27:23,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 67.10416666666667) internal successors, (6442), 96 states have internal predecessors, (6442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:27:23,765 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 18:27:23,765 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 18:27:23,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-05 18:27:23,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:27:23,970 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-12-05 18:27:23,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 18:27:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash 897908484, now seen corresponding path program 3 times [2022-12-05 18:27:23,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 18:27:23,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908662901] [2022-12-05 18:27:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 18:27:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 18:27:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 18:27:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:27:26,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 18:27:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908662901] [2022-12-05 18:27:26,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908662901] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 18:27:26,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998677374] [2022-12-05 18:27:26,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 18:27:26,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 18:27:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 18:27:26,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-05 18:27:26,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-05 18:27:26,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 18:27:26,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 18:27:26,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-05 18:27:26,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 18:27:26,280 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-05 18:27:26,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-05 18:27:26,297 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-05 18:27:26,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-05 18:27:26,898 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 13 treesize of output 9 [2022-12-05 18:27:27,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-12-05 18:27:27,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-05 18:27:27,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2022-12-05 18:27:28,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-05 18:27:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 18:27:28,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 18:27:31,334 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_538 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_538) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2022-12-05 18:27:31,461 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_538 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_538) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2022-12-05 18:27:31,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 18:27:31,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-12-05 18:27:31,485 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-05 18:27:31,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2022-12-05 18:27:31,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2022-12-05 18:27:32,273 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-05 18:27:32,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-12-05 18:27:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-05 18:27:32,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998677374] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 18:27:32,313 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 18:27:32,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 33] total 93 [2022-12-05 18:27:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578439966] [2022-12-05 18:27:32,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 18:27:32,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-12-05 18:27:32,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 18:27:32,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-12-05 18:27:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=7783, Unknown=6, NotChecked=358, Total=8556 [2022-12-05 18:27:32,320 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 154 [2022-12-05 18:27:32,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 994 places, 1665 transitions, 20445 flow. Second operand has 93 states, 93 states have (on average 66.23655913978494) internal successors, (6160), 93 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 18:27:32,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 18:27:32,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 154 [2022-12-05 18:27:32,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand