/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 21:42:32,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 21:42:32,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 21:42:32,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 21:42:32,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 21:42:32,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 21:42:32,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 21:42:32,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 21:42:32,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 21:42:32,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 21:42:32,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 21:42:32,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 21:42:32,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 21:42:32,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 21:42:32,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 21:42:32,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 21:42:32,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 21:42:32,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 21:42:32,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 21:42:32,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 21:42:32,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 21:42:32,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 21:42:32,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 21:42:32,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 21:42:32,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 21:42:32,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 21:42:32,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 21:42:32,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 21:42:32,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 21:42:32,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 21:42:32,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 21:42:32,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 21:42:32,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 21:42:32,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 21:42:32,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 21:42:32,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 21:42:32,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 21:42:32,674 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 21:42:32,675 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 21:42:32,675 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 21:42:32,675 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 21:42:32,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 21:42:32,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 21:42:32,676 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 21:42:32,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 21:42:32,676 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 21:42:32,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 21:42:32,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 21:42:32,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 21:42:32,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 21:42:32,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 21:42:32,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 21:42:32,683 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 21:42:32,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 21:42:32,683 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 21:42:32,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 21:42:32,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 21:42:32,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 21:42:32,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 21:42:32,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 21:42:32,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:42:32,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 21:42:32,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 21:42:32,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 21:42:32,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 21:42:32,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 21:42:32,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 21:42:32,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 21:42:32,685 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 21:42:32,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 21:42:32,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 21:42:32,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 21:42:32,945 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 21:42:32,945 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 21:42:32,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-01-27 21:42:34,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 21:42:34,199 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 21:42:34,200 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2023-01-27 21:42:34,205 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292ade08f/4fafe7183ca34b67ba8c4c02012bc336/FLAG67e7ea90d [2023-01-27 21:42:34,216 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292ade08f/4fafe7183ca34b67ba8c4c02012bc336 [2023-01-27 21:42:34,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 21:42:34,218 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 21:42:34,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 21:42:34,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 21:42:34,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 21:42:34,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a66bf85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34, skipping insertion in model container [2023-01-27 21:42:34,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 21:42:34,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 21:42:34,371 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2023-01-27 21:42:34,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:42:34,386 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 21:42:34,406 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c[3019,3032] [2023-01-27 21:42:34,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 21:42:34,415 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:42:34,415 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 21:42:34,421 INFO L208 MainTranslator]: Completed translation [2023-01-27 21:42:34,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34 WrapperNode [2023-01-27 21:42:34,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 21:42:34,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 21:42:34,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 21:42:34,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 21:42:34,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,451 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 139 [2023-01-27 21:42:34,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 21:42:34,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 21:42:34,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 21:42:34,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 21:42:34,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,482 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 21:42:34,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 21:42:34,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 21:42:34,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 21:42:34,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (1/1) ... [2023-01-27 21:42:34,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 21:42:34,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:42:34,513 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 21:42:34,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 21:42:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 21:42:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 21:42:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 21:42:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 21:42:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 21:42:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 21:42:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 21:42:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 21:42:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-27 21:42:34,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-27 21:42:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-27 21:42:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-27 21:42:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 21:42:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 21:42:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 21:42:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 21:42:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 21:42:34,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 21:42:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 21:42:34,552 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 21:42:34,665 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 21:42:34,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 21:42:34,917 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 21:42:34,994 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 21:42:34,994 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-27 21:42:34,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:42:34 BoogieIcfgContainer [2023-01-27 21:42:34,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 21:42:35,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 21:42:35,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 21:42:35,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 21:42:35,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 09:42:34" (1/3) ... [2023-01-27 21:42:35,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f47fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:42:35, skipping insertion in model container [2023-01-27 21:42:35,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 09:42:34" (2/3) ... [2023-01-27 21:42:35,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f47fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 09:42:35, skipping insertion in model container [2023-01-27 21:42:35,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 09:42:34" (3/3) ... [2023-01-27 21:42:35,025 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2023-01-27 21:42:35,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 21:42:35,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 21:42:35,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 21:42:35,137 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-27 21:42:35,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 162 transitions, 356 flow [2023-01-27 21:42:35,227 INFO L130 PetriNetUnfolder]: 12/158 cut-off events. [2023-01-27 21:42:35,228 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:42:35,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 158 events. 12/158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 126. Up to 2 conditions per place. [2023-01-27 21:42:35,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 162 transitions, 356 flow [2023-01-27 21:42:35,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 146 transitions, 316 flow [2023-01-27 21:42:35,239 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 21:42:35,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 146 transitions, 316 flow [2023-01-27 21:42:35,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 146 transitions, 316 flow [2023-01-27 21:42:35,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 146 transitions, 316 flow [2023-01-27 21:42:35,296 INFO L130 PetriNetUnfolder]: 12/146 cut-off events. [2023-01-27 21:42:35,296 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:42:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 146 events. 12/146 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 114 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 126. Up to 2 conditions per place. [2023-01-27 21:42:35,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 2280 [2023-01-27 21:42:40,003 INFO L134 LiptonReduction]: Checked pairs total: 3482 [2023-01-27 21:42:40,003 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-01-27 21:42:40,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 21:42:40,020 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;@4f08ee0e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 21:42:40,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 21:42:40,027 INFO L130 PetriNetUnfolder]: 4/30 cut-off events. [2023-01-27 21:42:40,027 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-27 21:42:40,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:42:40,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:42:40,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:42:40,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:42:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash -957242749, now seen corresponding path program 1 times [2023-01-27 21:42:40,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:42:40,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268734682] [2023-01-27 21:42:40,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:40,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:42:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:42:40,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:42:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268734682] [2023-01-27 21:42:40,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268734682] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:42:40,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:42:40,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:42:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240364277] [2023-01-27 21:42:40,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:42:40,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:42:40,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:42:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:42:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:42:40,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 296 [2023-01-27 21:42:40,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:40,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:42:40,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 296 [2023-01-27 21:42:40,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:42:40,729 INFO L130 PetriNetUnfolder]: 1420/1898 cut-off events. [2023-01-27 21:42:40,730 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-01-27 21:42:40,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1898 events. 1420/1898 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7098 event pairs, 765 based on Foata normal form. 0/1421 useless extension candidates. Maximal degree in co-relation 3498. Up to 1552 conditions per place. [2023-01-27 21:42:40,745 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 42 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-01-27 21:42:40,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 215 flow [2023-01-27 21:42:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:42:40,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:42:40,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-01-27 21:42:40,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46790540540540543 [2023-01-27 21:42:40,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-01-27 21:42:40,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-01-27 21:42:40,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:42:40,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-01-27 21:42:40,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:40,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:40,787 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:40,788 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 4 states and 554 transitions. [2023-01-27 21:42:40,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 215 flow [2023-01-27 21:42:40,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 193 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-27 21:42:40,798 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 84 flow [2023-01-27 21:42:40,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-01-27 21:42:40,805 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-01-27 21:42:40,806 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 84 flow [2023-01-27 21:42:40,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:40,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:42:40,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:42:40,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 21:42:40,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:42:40,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:42:40,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1622835390, now seen corresponding path program 1 times [2023-01-27 21:42:40,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:42:40,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928018527] [2023-01-27 21:42:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:42:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:42:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:42:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928018527] [2023-01-27 21:42:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928018527] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:42:41,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:42:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:42:41,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759468187] [2023-01-27 21:42:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:42:41,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:42:41,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:42:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:42:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:42:41,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 296 [2023-01-27 21:42:41,007 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 84 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:42:41,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 296 [2023-01-27 21:42:41,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:42:41,225 INFO L130 PetriNetUnfolder]: 1718/2336 cut-off events. [2023-01-27 21:42:41,226 INFO L131 PetriNetUnfolder]: For 549/549 co-relation queries the response was YES. [2023-01-27 21:42:41,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5313 conditions, 2336 events. 1718/2336 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8125 event pairs, 977 based on Foata normal form. 0/1943 useless extension candidates. Maximal degree in co-relation 2424. Up to 1790 conditions per place. [2023-01-27 21:42:41,238 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-01-27 21:42:41,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 233 flow [2023-01-27 21:42:41,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:42:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:42:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-01-27 21:42:41,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4704391891891892 [2023-01-27 21:42:41,240 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-01-27 21:42:41,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-01-27 21:42:41,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:42:41,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-01-27 21:42:41,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,247 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,247 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 84 flow. Second operand 4 states and 557 transitions. [2023-01-27 21:42:41,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 233 flow [2023-01-27 21:42:41,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 50 transitions, 223 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 21:42:41,259 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 92 flow [2023-01-27 21:42:41,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-01-27 21:42:41,260 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-01-27 21:42:41,260 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 92 flow [2023-01-27 21:42:41,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:42:41,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:42:41,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 21:42:41,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:42:41,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:42:41,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1337805984, now seen corresponding path program 1 times [2023-01-27 21:42:41,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:42:41,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392933025] [2023-01-27 21:42:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:42:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:42:41,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:42:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392933025] [2023-01-27 21:42:41,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392933025] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:42:41,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:42:41,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 21:42:41,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605551111] [2023-01-27 21:42:41,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:42:41,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:42:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:42:41,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:42:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:42:41,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 296 [2023-01-27 21:42:41,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:42:41,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 296 [2023-01-27 21:42:41,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:42:41,644 INFO L130 PetriNetUnfolder]: 1632/2232 cut-off events. [2023-01-27 21:42:41,644 INFO L131 PetriNetUnfolder]: For 545/694 co-relation queries the response was YES. [2023-01-27 21:42:41,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5578 conditions, 2232 events. 1632/2232 cut-off events. For 545/694 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8389 event pairs, 977 based on Foata normal form. 149/1982 useless extension candidates. Maximal degree in co-relation 1672. Up to 1790 conditions per place. [2023-01-27 21:42:41,656 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 46 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-01-27 21:42:41,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 240 flow [2023-01-27 21:42:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 21:42:41,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 21:42:41,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-01-27 21:42:41,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46790540540540543 [2023-01-27 21:42:41,658 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-01-27 21:42:41,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-01-27 21:42:41,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:42:41,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-01-27 21:42:41,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,663 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,663 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 92 flow. Second operand 4 states and 554 transitions. [2023-01-27 21:42:41,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 240 flow [2023-01-27 21:42:41,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 231 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 21:42:41,666 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 100 flow [2023-01-27 21:42:41,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-01-27 21:42:41,667 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-01-27 21:42:41,670 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 100 flow [2023-01-27 21:42:41,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:42:41,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:42:41,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 21:42:41,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:42:41,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:42:41,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1347991008, now seen corresponding path program 1 times [2023-01-27 21:42:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:42:41,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314795380] [2023-01-27 21:42:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:42:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:42:41,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:42:41,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314795380] [2023-01-27 21:42:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314795380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:42:41,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:42:41,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:42:41,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178499876] [2023-01-27 21:42:41,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:42:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 21:42:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:42:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 21:42:41,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 21:42:41,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 296 [2023-01-27 21:42:41,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:41,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:42:41,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 296 [2023-01-27 21:42:41,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:42:42,053 INFO L130 PetriNetUnfolder]: 1632/2233 cut-off events. [2023-01-27 21:42:42,054 INFO L131 PetriNetUnfolder]: For 878/1027 co-relation queries the response was YES. [2023-01-27 21:42:42,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5793 conditions, 2233 events. 1632/2233 cut-off events. For 878/1027 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8188 event pairs, 1243 based on Foata normal form. 149/1978 useless extension candidates. Maximal degree in co-relation 1883. Up to 2223 conditions per place. [2023-01-27 21:42:42,066 INFO L137 encePairwiseOnDemand]: 293/296 looper letters, 32 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-01-27 21:42:42,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 35 transitions, 170 flow [2023-01-27 21:42:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 21:42:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 21:42:42,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-01-27 21:42:42,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380630630630631 [2023-01-27 21:42:42,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-01-27 21:42:42,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-01-27 21:42:42,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:42:42,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-01-27 21:42:42,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:42,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:42,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:42,077 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 100 flow. Second operand 3 states and 389 transitions. [2023-01-27 21:42:42,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 35 transitions, 170 flow [2023-01-27 21:42:42,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 21:42:42,111 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 106 flow [2023-01-27 21:42:42,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-01-27 21:42:42,112 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-01-27 21:42:42,112 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 106 flow [2023-01-27 21:42:42,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:42,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:42:42,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:42:42,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 21:42:42,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:42:42,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:42:42,113 INFO L85 PathProgramCache]: Analyzing trace with hash -406219004, now seen corresponding path program 1 times [2023-01-27 21:42:42,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:42:42,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990416641] [2023-01-27 21:42:42,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:42,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:42:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:42:42,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:42:42,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990416641] [2023-01-27 21:42:42,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990416641] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:42:42,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708584220] [2023-01-27 21:42:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:42,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:42:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:42:42,949 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:42:42,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 21:42:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:43,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 35 conjunts are in the unsatisfiable core [2023-01-27 21:42:43,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:42:43,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 21:42:43,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 21:42:43,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:42:43,310 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 14 treesize of output 16 [2023-01-27 21:42:43,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:42:43,390 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 14 treesize of output 16 [2023-01-27 21:42:43,411 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 15 treesize of output 7 [2023-01-27 21:42:43,485 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 39 treesize of output 21 [2023-01-27 21:42:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:42:43,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:42:43,624 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 49 treesize of output 25 [2023-01-27 21:42:43,955 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (or (forall ((v_ArrVal_185 (Array Int Int))) (let ((.cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185) c_~A~0.base) c_~A~0.offset))) (or (< c_~min~0 (+ 2 .cse0)) (< 2147483646 .cse0)))) (<= (select (select .cse1 c_~A~0.base) c_~A~0.offset) c_~min~0)))) (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (let ((.cse2 (select (select .cse4 c_~A~0.base) c_~A~0.offset))) (or (< c_~min~0 .cse2) (forall ((v_ArrVal_185 (Array Int Int))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185) c_~A~0.base) c_~A~0.offset))) (or (< .cse2 (+ 2 .cse3)) (< 2147483646 .cse3))))))))) is different from false [2023-01-27 21:42:43,992 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (let ((.cse1 (select (select .cse3 c_~A~0.base) c_~A~0.offset))) (or (< .cse0 .cse1) (forall ((v_ArrVal_185 (Array Int Int))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185) c_~A~0.base) c_~A~0.offset))) (or (< .cse1 (+ 2 .cse2)) (< 2147483646 .cse2)))))))) (forall ((v_ArrVal_184 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (or (<= (select (select .cse4 c_~A~0.base) c_~A~0.offset) .cse0) (forall ((v_ArrVal_185 (Array Int Int))) (let ((.cse5 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185) c_~A~0.base) c_~A~0.offset))) (or (< .cse0 (+ 2 .cse5)) (< 2147483646 .cse5))))))))) is different from false [2023-01-27 21:42:44,071 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_184 (Array Int Int)) (v_ArrVal_183 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_183))) (let ((.cse2 (store .cse3 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (forall ((v_ArrVal_185 (Array Int Int))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse0 (+ .cse1 2)) (< 2147483646 .cse1)))) (< (select (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) .cse0)))))) (forall ((v_ArrVal_184 (Array Int Int)) (v_ArrVal_183 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_183))) (let ((.cse5 (select (select .cse7 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse4 (store .cse7 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_184))) (or (<= (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) .cse5) (forall ((v_ArrVal_185 (Array Int Int))) (let ((.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_185) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< .cse5 (+ .cse6 2)) (< 2147483646 .cse6))))))))) is different from false [2023-01-27 21:42:44,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:42:44,110 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 125 treesize of output 77 [2023-01-27 21:42:44,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2845 treesize of output 2653 [2023-01-27 21:42:44,165 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 110 treesize of output 104 [2023-01-27 21:42:44,173 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 136 treesize of output 120 [2023-01-27 21:42:44,182 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 150 treesize of output 138 [2023-01-27 21:42:44,284 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 21:42:44,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 1 [2023-01-27 21:42:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-27 21:42:44,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708584220] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:42:44,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:42:44,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 28 [2023-01-27 21:42:44,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814226161] [2023-01-27 21:42:44,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:42:44,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-27 21:42:44,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:42:44,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-27 21:42:44,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=577, Unknown=9, NotChecked=156, Total=870 [2023-01-27 21:42:44,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 296 [2023-01-27 21:42:44,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 106 flow. Second operand has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:44,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:42:44,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 296 [2023-01-27 21:42:44,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:42:47,973 INFO L130 PetriNetUnfolder]: 12624/17356 cut-off events. [2023-01-27 21:42:47,973 INFO L131 PetriNetUnfolder]: For 4404/5446 co-relation queries the response was YES. [2023-01-27 21:42:47,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44463 conditions, 17356 events. 12624/17356 cut-off events. For 4404/5446 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 93205 event pairs, 1024 based on Foata normal form. 1052/14660 useless extension candidates. Maximal degree in co-relation 44449. Up to 4507 conditions per place. [2023-01-27 21:42:48,042 INFO L137 encePairwiseOnDemand]: 286/296 looper letters, 240 selfloop transitions, 47 changer transitions 267/555 dead transitions. [2023-01-27 21:42:48,042 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 555 transitions, 2750 flow [2023-01-27 21:42:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-27 21:42:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-27 21:42:48,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3633 transitions. [2023-01-27 21:42:48,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37192874692874694 [2023-01-27 21:42:48,051 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3633 transitions. [2023-01-27 21:42:48,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3633 transitions. [2023-01-27 21:42:48,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:42:48,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3633 transitions. [2023-01-27 21:42:48,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 110.0909090909091) internal successors, (3633), 33 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:48,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 296.0) internal successors, (10064), 34 states have internal predecessors, (10064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:48,074 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 296.0) internal successors, (10064), 34 states have internal predecessors, (10064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:48,075 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 106 flow. Second operand 33 states and 3633 transitions. [2023-01-27 21:42:48,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 555 transitions, 2750 flow [2023-01-27 21:42:48,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 555 transitions, 2746 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 21:42:48,184 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 498 flow [2023-01-27 21:42:48,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=498, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2023-01-27 21:42:48,185 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2023-01-27 21:42:48,185 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 498 flow [2023-01-27 21:42:48,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 98.0) internal successors, (2940), 30 states have internal predecessors, (2940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:48,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:42:48,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:42:48,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 21:42:48,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:42:48,393 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:42:48,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:42:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash -776649670, now seen corresponding path program 2 times [2023-01-27 21:42:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:42:48,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504111126] [2023-01-27 21:42:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:48,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:42:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:42:48,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:42:48,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504111126] [2023-01-27 21:42:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504111126] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:42:48,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:42:48,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:42:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866803027] [2023-01-27 21:42:48,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:42:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:42:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:42:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:42:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:42:48,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 296 [2023-01-27 21:42:48,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:48,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:42:48,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 296 [2023-01-27 21:42:48,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:42:50,440 INFO L130 PetriNetUnfolder]: 9630/13442 cut-off events. [2023-01-27 21:42:50,440 INFO L131 PetriNetUnfolder]: For 68859/70453 co-relation queries the response was YES. [2023-01-27 21:42:50,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52345 conditions, 13442 events. 9630/13442 cut-off events. For 68859/70453 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 72782 event pairs, 864 based on Foata normal form. 1595/14187 useless extension candidates. Maximal degree in co-relation 52298. Up to 7235 conditions per place. [2023-01-27 21:42:50,505 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 93 selfloop transitions, 2 changer transitions 160/256 dead transitions. [2023-01-27 21:42:50,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 256 transitions, 2064 flow [2023-01-27 21:42:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:42:50,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:42:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2023-01-27 21:42:50,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047297297297297 [2023-01-27 21:42:50,508 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2023-01-27 21:42:50,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2023-01-27 21:42:50,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:42:50,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2023-01-27 21:42:50,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:50,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:50,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:50,514 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 498 flow. Second operand 5 states and 747 transitions. [2023-01-27 21:42:50,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 256 transitions, 2064 flow [2023-01-27 21:42:50,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 256 transitions, 1985 flow, removed 38 selfloop flow, removed 17 redundant places. [2023-01-27 21:42:50,613 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 301 flow [2023-01-27 21:42:50,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=301, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2023-01-27 21:42:50,615 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 33 predicate places. [2023-01-27 21:42:50,615 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 301 flow [2023-01-27 21:42:50,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:50,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:42:50,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:42:50,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 21:42:50,616 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:42:50,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:42:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash -421841092, now seen corresponding path program 3 times [2023-01-27 21:42:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:42:50,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513598643] [2023-01-27 21:42:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:42:50,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:42:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:42:51,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:42:51,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:42:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513598643] [2023-01-27 21:42:51,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513598643] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:42:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355936092] [2023-01-27 21:42:51,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:42:51,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:42:51,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:42:51,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:42:51,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 21:42:51,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-27 21:42:51,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:42:51,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-27 21:42:51,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:42:51,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 21:42:51,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:42:51,619 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 14 treesize of output 16 [2023-01-27 21:42:51,709 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 15 treesize of output 7 [2023-01-27 21:42:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:42:51,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:42:58,262 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_284 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_284) c_~A~0.base) c_~A~0.offset))) (or (<= (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) (+ .cse0 1)) (<= 2147483647 .cse0)))) is different from false [2023-01-27 21:42:58,271 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:42:58,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2023-01-27 21:42:58,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 72 [2023-01-27 21:42:58,279 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 26 treesize of output 24 [2023-01-27 21:42:58,282 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 23 [2023-01-27 21:42:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:42:58,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355936092] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:42:58,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:42:58,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 26 [2023-01-27 21:42:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282652533] [2023-01-27 21:42:58,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:42:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-27 21:42:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:42:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-27 21:42:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=561, Unknown=10, NotChecked=50, Total=756 [2023-01-27 21:42:58,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 296 [2023-01-27 21:42:58,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 301 flow. Second operand has 28 states, 28 states have (on average 103.0) internal successors, (2884), 28 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:42:58,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:42:58,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 296 [2023-01-27 21:42:58,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:43:05,856 INFO L130 PetriNetUnfolder]: 24993/34453 cut-off events. [2023-01-27 21:43:05,857 INFO L131 PetriNetUnfolder]: For 191930/191930 co-relation queries the response was YES. [2023-01-27 21:43:05,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136650 conditions, 34453 events. 24993/34453 cut-off events. For 191930/191930 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 199011 event pairs, 1322 based on Foata normal form. 20/31888 useless extension candidates. Maximal degree in co-relation 136616. Up to 7291 conditions per place. [2023-01-27 21:43:06,020 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 388 selfloop transitions, 177 changer transitions 760/1325 dead transitions. [2023-01-27 21:43:06,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 1325 transitions, 9162 flow [2023-01-27 21:43:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-01-27 21:43:06,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-01-27 21:43:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 9798 transitions. [2023-01-27 21:43:06,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.380475302889096 [2023-01-27 21:43:06,039 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 9798 transitions. [2023-01-27 21:43:06,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 9798 transitions. [2023-01-27 21:43:06,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:43:06,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 9798 transitions. [2023-01-27 21:43:06,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 112.62068965517241) internal successors, (9798), 87 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:43:06,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 296.0) internal successors, (26048), 88 states have internal predecessors, (26048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:43:06,110 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 296.0) internal successors, (26048), 88 states have internal predecessors, (26048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:43:06,110 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 301 flow. Second operand 87 states and 9798 transitions. [2023-01-27 21:43:06,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 1325 transitions, 9162 flow [2023-01-27 21:43:07,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 1325 transitions, 8285 flow, removed 408 selfloop flow, removed 10 redundant places. [2023-01-27 21:43:07,536 INFO L231 Difference]: Finished difference. Result has 211 places, 233 transitions, 2150 flow [2023-01-27 21:43:07,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=2150, PETRI_PLACES=211, PETRI_TRANSITIONS=233} [2023-01-27 21:43:07,537 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 171 predicate places. [2023-01-27 21:43:07,537 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 233 transitions, 2150 flow [2023-01-27 21:43:07,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 103.0) internal successors, (2884), 28 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:43:07,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:43:07,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:43:07,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 21:43:07,749 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,SelfDestructingSolverStorable6 [2023-01-27 21:43:07,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:43:07,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:43:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash -551404586, now seen corresponding path program 4 times [2023-01-27 21:43:07,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:43:07,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336980516] [2023-01-27 21:43:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:43:07,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:43:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:43:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 21:43:08,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:43:08,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336980516] [2023-01-27 21:43:08,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336980516] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:43:08,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35762003] [2023-01-27 21:43:08,679 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:43:08,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:43:08,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:43:08,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:43:08,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 21:43:08,792 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:43:08,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:43:08,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 39 conjunts are in the unsatisfiable core [2023-01-27 21:43:08,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:43:08,803 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 894 treesize of output 862 [2023-01-27 21:43:08,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 21:43:08,899 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 14 treesize of output 16 [2023-01-27 21:43:08,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-27 21:43:08,961 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 17 treesize of output 9 [2023-01-27 21:43:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:43:08,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:43:09,222 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_354 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_354) c_~A~0.base) c_~A~0.offset))) (or (< c_~min~0 (+ .cse0 1)) (< 2147483647 .cse0)))) is different from false [2023-01-27 21:43:11,580 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 247 treesize of output 215 [2023-01-27 21:43:11,589 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 41 treesize of output 37 [2023-01-27 21:43:11,593 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 53 treesize of output 45 [2023-01-27 21:43:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:43:11,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35762003] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:43:11,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:43:11,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2023-01-27 21:43:11,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742081961] [2023-01-27 21:43:11,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:43:11,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 21:43:11,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:43:11,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 21:43:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=752, Unknown=14, NotChecked=58, Total=992 [2023-01-27 21:43:11,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 296 [2023-01-27 21:43:11,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 233 transitions, 2150 flow. Second operand has 32 states, 32 states have (on average 94.5) internal successors, (3024), 32 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:43:11,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:43:11,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 296 [2023-01-27 21:43:11,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:43:20,096 WARN L222 SmtUtils]: Spent 6.10s on a formula simplification. DAG size of input: 51 DAG size of output: 33 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:43:53,668 WARN L222 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 56 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:44:30,123 WARN L222 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 59 DAG size of output: 42 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:45:24,528 INFO L130 PetriNetUnfolder]: 46739/65136 cut-off events. [2023-01-27 21:45:24,528 INFO L131 PetriNetUnfolder]: For 4923944/4923944 co-relation queries the response was YES. [2023-01-27 21:45:25,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624230 conditions, 65136 events. 46739/65136 cut-off events. For 4923944/4923944 co-relation queries the response was YES. Maximal size of possible extension queue 2395. Compared 418459 event pairs, 1872 based on Foata normal form. 35/65170 useless extension candidates. Maximal degree in co-relation 624132. Up to 17165 conditions per place. [2023-01-27 21:45:25,594 INFO L137 encePairwiseOnDemand]: 283/296 looper letters, 532 selfloop transitions, 475 changer transitions 1128/2135 dead transitions. [2023-01-27 21:45:25,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 2135 transitions, 32125 flow [2023-01-27 21:45:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-01-27 21:45:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-01-27 21:45:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 13204 transitions. [2023-01-27 21:45:25,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3512449457331347 [2023-01-27 21:45:25,627 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 13204 transitions. [2023-01-27 21:45:25,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 13204 transitions. [2023-01-27 21:45:25,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:45:25,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 13204 transitions. [2023-01-27 21:45:25,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 103.96850393700787) internal successors, (13204), 127 states have internal predecessors, (13204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:45:25,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 296.0) internal successors, (37888), 128 states have internal predecessors, (37888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:45:25,714 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 296.0) internal successors, (37888), 128 states have internal predecessors, (37888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:45:25,714 INFO L175 Difference]: Start difference. First operand has 211 places, 233 transitions, 2150 flow. Second operand 127 states and 13204 transitions. [2023-01-27 21:45:25,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 2135 transitions, 32125 flow [2023-01-27 21:46:03,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 2135 transitions, 21452 flow, removed 5210 selfloop flow, removed 43 redundant places. [2023-01-27 21:46:03,767 INFO L231 Difference]: Finished difference. Result has 351 places, 549 transitions, 7180 flow [2023-01-27 21:46:03,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=127, PETRI_FLOW=7180, PETRI_PLACES=351, PETRI_TRANSITIONS=549} [2023-01-27 21:46:03,767 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 311 predicate places. [2023-01-27 21:46:03,768 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 549 transitions, 7180 flow [2023-01-27 21:46:03,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 94.5) internal successors, (3024), 32 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:46:03,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:46:03,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:46:03,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 21:46:03,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:46:03,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:46:03,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:46:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -870441776, now seen corresponding path program 5 times [2023-01-27 21:46:03,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:46:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102532773] [2023-01-27 21:46:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:46:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:46:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:46:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-27 21:46:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:46:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102532773] [2023-01-27 21:46:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102532773] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 21:46:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 21:46:04,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 21:46:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048877768] [2023-01-27 21:46:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:46:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 21:46:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:46:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 21:46:04,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 21:46:04,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 296 [2023-01-27 21:46:04,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 549 transitions, 7180 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:46:04,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:46:04,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 296 [2023-01-27 21:46:04,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:46:17,297 INFO L130 PetriNetUnfolder]: 36972/52653 cut-off events. [2023-01-27 21:46:17,298 INFO L131 PetriNetUnfolder]: For 8233871/8236546 co-relation queries the response was YES. [2023-01-27 21:46:18,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621460 conditions, 52653 events. 36972/52653 cut-off events. For 8233871/8236546 co-relation queries the response was YES. Maximal size of possible extension queue 2082. Compared 344812 event pairs, 10021 based on Foata normal form. 2145/54625 useless extension candidates. Maximal degree in co-relation 621291. Up to 40018 conditions per place. [2023-01-27 21:46:18,738 INFO L137 encePairwiseOnDemand]: 292/296 looper letters, 504 selfloop transitions, 38 changer transitions 410/990 dead transitions. [2023-01-27 21:46:18,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 990 transitions, 15337 flow [2023-01-27 21:46:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 21:46:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 21:46:18,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-01-27 21:46:18,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006756756756757 [2023-01-27 21:46:18,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-01-27 21:46:18,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-01-27 21:46:18,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:46:18,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-01-27 21:46:18,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:46:18,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:46:18,744 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:46:18,744 INFO L175 Difference]: Start difference. First operand has 351 places, 549 transitions, 7180 flow. Second operand 5 states and 741 transitions. [2023-01-27 21:46:18,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 990 transitions, 15337 flow [2023-01-27 21:47:13,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 990 transitions, 14132 flow, removed 568 selfloop flow, removed 77 redundant places. [2023-01-27 21:47:13,816 INFO L231 Difference]: Finished difference. Result has 200 places, 521 transitions, 6411 flow [2023-01-27 21:47:13,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=6647, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6411, PETRI_PLACES=200, PETRI_TRANSITIONS=521} [2023-01-27 21:47:13,817 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 160 predicate places. [2023-01-27 21:47:13,817 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 521 transitions, 6411 flow [2023-01-27 21:47:13,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:47:13,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:47:13,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:47:13,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 21:47:13,818 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:47:13,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:47:13,818 INFO L85 PathProgramCache]: Analyzing trace with hash 591133008, now seen corresponding path program 6 times [2023-01-27 21:47:13,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:47:13,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374778368] [2023-01-27 21:47:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:47:13,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:47:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:47:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:47:14,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:47:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374778368] [2023-01-27 21:47:14,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374778368] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:47:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568571787] [2023-01-27 21:47:14,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 21:47:14,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:47:14,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:47:14,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:47:14,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 21:47:14,401 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-27 21:47:14,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:47:14,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 21:47:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:47:14,564 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 15 treesize of output 7 [2023-01-27 21:47:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:47:14,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:47:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:47:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568571787] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 21:47:14,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 21:47:14,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 9] total 20 [2023-01-27 21:47:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599215977] [2023-01-27 21:47:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:47:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 21:47:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:47:14,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 21:47:14,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-01-27 21:47:14,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 296 [2023-01-27 21:47:14,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 521 transitions, 6411 flow. Second operand has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:47:14,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:47:14,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 296 [2023-01-27 21:47:14,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:47:30,296 INFO L130 PetriNetUnfolder]: 59143/83823 cut-off events. [2023-01-27 21:47:30,296 INFO L131 PetriNetUnfolder]: For 3477783/3480766 co-relation queries the response was YES. [2023-01-27 21:47:31,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622516 conditions, 83823 events. 59143/83823 cut-off events. For 3477783/3480766 co-relation queries the response was YES. Maximal size of possible extension queue 3346. Compared 581718 event pairs, 11634 based on Foata normal form. 2486/86205 useless extension candidates. Maximal degree in co-relation 622420. Up to 38337 conditions per place. [2023-01-27 21:47:31,438 INFO L137 encePairwiseOnDemand]: 284/296 looper letters, 643 selfloop transitions, 307 changer transitions 161/1149 dead transitions. [2023-01-27 21:47:31,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1149 transitions, 16278 flow [2023-01-27 21:47:31,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 21:47:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 21:47:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1427 transitions. [2023-01-27 21:47:31,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382678132678133 [2023-01-27 21:47:31,441 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1427 transitions. [2023-01-27 21:47:31,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1427 transitions. [2023-01-27 21:47:31,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:47:31,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1427 transitions. [2023-01-27 21:47:31,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.72727272727272) internal successors, (1427), 11 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:47:31,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 296.0) internal successors, (3552), 12 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:47:31,446 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 296.0) internal successors, (3552), 12 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:47:31,446 INFO L175 Difference]: Start difference. First operand has 200 places, 521 transitions, 6411 flow. Second operand 11 states and 1427 transitions. [2023-01-27 21:47:31,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1149 transitions, 16278 flow [2023-01-27 21:47:54,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1149 transitions, 15937 flow, removed 140 selfloop flow, removed 5 redundant places. [2023-01-27 21:47:54,403 INFO L231 Difference]: Finished difference. Result has 212 places, 770 transitions, 10829 flow [2023-01-27 21:47:54,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=6318, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10829, PETRI_PLACES=212, PETRI_TRANSITIONS=770} [2023-01-27 21:47:54,404 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 172 predicate places. [2023-01-27 21:47:54,404 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 770 transitions, 10829 flow [2023-01-27 21:47:54,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 115.75) internal successors, (926), 8 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:47:54,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:47:54,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:47:54,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 21:47:54,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:47:54,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:47:54,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:47:54,610 INFO L85 PathProgramCache]: Analyzing trace with hash 186363290, now seen corresponding path program 7 times [2023-01-27 21:47:54,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:47:54,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767886838] [2023-01-27 21:47:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:47:54,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:47:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:47:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:47:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:47:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767886838] [2023-01-27 21:47:54,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767886838] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:47:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135634208] [2023-01-27 21:47:54,942 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 21:47:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:47:54,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:47:54,943 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:47:54,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 21:47:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:47:55,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-27 21:47:55,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:47:55,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:47:55,185 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 14 treesize of output 16 [2023-01-27 21:47:55,228 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 15 treesize of output 7 [2023-01-27 21:47:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:47:55,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:47:55,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 21:47:55,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 85 [2023-01-27 21:47:55,604 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 47 treesize of output 45 [2023-01-27 21:47:55,608 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 45 treesize of output 43 [2023-01-27 21:47:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:47:55,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135634208] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 21:47:55,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 21:47:55,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 8] total 21 [2023-01-27 21:47:55,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762759266] [2023-01-27 21:47:55,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:47:55,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 21:47:55,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:47:55,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 21:47:55,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=409, Unknown=4, NotChecked=0, Total=506 [2023-01-27 21:47:55,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 296 [2023-01-27 21:47:55,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 770 transitions, 10829 flow. Second operand has 11 states, 11 states have (on average 112.72727272727273) internal successors, (1240), 11 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:47:55,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:47:55,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 296 [2023-01-27 21:47:55,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:48:28,820 INFO L130 PetriNetUnfolder]: 109837/155659 cut-off events. [2023-01-27 21:48:28,821 INFO L131 PetriNetUnfolder]: For 5965247/5970157 co-relation queries the response was YES. [2023-01-27 21:48:30,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166642 conditions, 155659 events. 109837/155659 cut-off events. For 5965247/5970157 co-relation queries the response was YES. Maximal size of possible extension queue 5958. Compared 1156001 event pairs, 34205 based on Foata normal form. 4220/159700 useless extension candidates. Maximal degree in co-relation 1166539. Up to 53470 conditions per place. [2023-01-27 21:48:31,101 INFO L137 encePairwiseOnDemand]: 288/296 looper letters, 685 selfloop transitions, 19 changer transitions 1350/2078 dead transitions. [2023-01-27 21:48:31,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 2078 transitions, 34130 flow [2023-01-27 21:48:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 21:48:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 21:48:31,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1129 transitions. [2023-01-27 21:48:31,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237987987987988 [2023-01-27 21:48:31,103 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1129 transitions. [2023-01-27 21:48:31,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1129 transitions. [2023-01-27 21:48:31,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:48:31,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1129 transitions. [2023-01-27 21:48:31,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.44444444444444) internal successors, (1129), 9 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:48:31,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:48:31,106 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 296.0) internal successors, (2960), 10 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:48:31,106 INFO L175 Difference]: Start difference. First operand has 212 places, 770 transitions, 10829 flow. Second operand 9 states and 1129 transitions. [2023-01-27 21:48:31,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 2078 transitions, 34130 flow [2023-01-27 21:49:51,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 2078 transitions, 34030 flow, removed 50 selfloop flow, removed 2 redundant places. [2023-01-27 21:49:51,999 INFO L231 Difference]: Finished difference. Result has 222 places, 598 transitions, 8491 flow [2023-01-27 21:49:52,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=10809, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8491, PETRI_PLACES=222, PETRI_TRANSITIONS=598} [2023-01-27 21:49:52,000 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 182 predicate places. [2023-01-27 21:49:52,000 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 598 transitions, 8491 flow [2023-01-27 21:49:52,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 112.72727272727273) internal successors, (1240), 11 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:49:52,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:49:52,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:49:52,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 21:49:52,205 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,SelfDestructingSolverStorable10 [2023-01-27 21:49:52,206 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:49:52,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:49:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1473933630, now seen corresponding path program 8 times [2023-01-27 21:49:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:49:52,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597996527] [2023-01-27 21:49:52,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:49:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:49:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:49:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:49:52,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:49:52,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597996527] [2023-01-27 21:49:52,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597996527] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:49:52,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732948753] [2023-01-27 21:49:52,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 21:49:52,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:49:52,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:49:52,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:49:52,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 21:49:52,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:49:52,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:49:52,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 42 conjunts are in the unsatisfiable core [2023-01-27 21:49:52,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:49:53,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:49:53,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-27 21:49:53,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:49:53,168 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 14 treesize of output 16 [2023-01-27 21:49:53,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:49:53,203 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 14 treesize of output 16 [2023-01-27 21:49:53,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-27 21:49:53,327 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 17 treesize of output 9 [2023-01-27 21:49:53,348 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:49:53,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:49:53,668 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_584 (Array Int Int)) (v_ArrVal_583 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_583) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_584) c_~A~0.base) c_~A~0.offset))) (or (< 2147483647 .cse0) (< c_~min~0 (+ .cse0 1))))) is different from false [2023-01-27 21:50:00,010 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 257 treesize of output 225 [2023-01-27 21:50:00,018 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 221 treesize of output 205 [2023-01-27 21:50:00,026 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 109 treesize of output 105 [2023-01-27 21:50:00,031 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 201 treesize of output 193 [2023-01-27 21:50:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-01-27 21:50:00,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732948753] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:50:00,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:50:00,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 14] total 34 [2023-01-27 21:50:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207517297] [2023-01-27 21:50:00,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:50:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-01-27 21:50:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:50:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-01-27 21:50:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=946, Unknown=33, NotChecked=66, Total=1260 [2023-01-27 21:50:00,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 296 [2023-01-27 21:50:00,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 598 transitions, 8491 flow. Second operand has 36 states, 36 states have (on average 96.52777777777777) internal successors, (3475), 36 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:50:00,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:50:00,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 296 [2023-01-27 21:50:00,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:50:35,062 INFO L130 PetriNetUnfolder]: 88311/124750 cut-off events. [2023-01-27 21:50:35,062 INFO L131 PetriNetUnfolder]: For 5674550/5674550 co-relation queries the response was YES. [2023-01-27 21:50:36,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984567 conditions, 124750 events. 88311/124750 cut-off events. For 5674550/5674550 co-relation queries the response was YES. Maximal size of possible extension queue 4524. Compared 885942 event pairs, 8136 based on Foata normal form. 96/124845 useless extension candidates. Maximal degree in co-relation 984458. Up to 33943 conditions per place. [2023-01-27 21:50:36,904 INFO L137 encePairwiseOnDemand]: 285/296 looper letters, 572 selfloop transitions, 513 changer transitions 1382/2467 dead transitions. [2023-01-27 21:50:36,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 2467 transitions, 38298 flow [2023-01-27 21:50:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-01-27 21:50:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2023-01-27 21:50:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 12385 transitions. [2023-01-27 21:50:36,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576172326172326 [2023-01-27 21:50:36,921 INFO L72 ComplementDD]: Start complementDD. Operand 117 states and 12385 transitions. [2023-01-27 21:50:36,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 12385 transitions. [2023-01-27 21:50:36,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:50:36,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 117 states and 12385 transitions. [2023-01-27 21:50:36,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 118 states, 117 states have (on average 105.85470085470085) internal successors, (12385), 117 states have internal predecessors, (12385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:50:36,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 118 states, 118 states have (on average 296.0) internal successors, (34928), 118 states have internal predecessors, (34928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:50:36,969 INFO L81 ComplementDD]: Finished complementDD. Result has 118 states, 118 states have (on average 296.0) internal successors, (34928), 118 states have internal predecessors, (34928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:50:36,969 INFO L175 Difference]: Start difference. First operand has 222 places, 598 transitions, 8491 flow. Second operand 117 states and 12385 transitions. [2023-01-27 21:50:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 2467 transitions, 38298 flow [2023-01-27 21:51:18,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 2467 transitions, 35572 flow, removed 1268 selfloop flow, removed 18 redundant places. [2023-01-27 21:51:18,084 INFO L231 Difference]: Finished difference. Result has 400 places, 610 transitions, 10508 flow [2023-01-27 21:51:18,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=8240, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=10508, PETRI_PLACES=400, PETRI_TRANSITIONS=610} [2023-01-27 21:51:18,084 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 360 predicate places. [2023-01-27 21:51:18,084 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 610 transitions, 10508 flow [2023-01-27 21:51:18,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 96.52777777777777) internal successors, (3475), 36 states have internal predecessors, (3475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:51:18,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:51:18,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:51:18,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 21:51:18,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:51:18,286 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:51:18,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:51:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1302018458, now seen corresponding path program 9 times [2023-01-27 21:51:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:51:18,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255116990] [2023-01-27 21:51:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:51:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:51:18,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:51:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:51:18,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:51:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255116990] [2023-01-27 21:51:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255116990] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:51:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433547263] [2023-01-27 21:51:18,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 21:51:18,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:51:18,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:51:18,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:51:18,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 21:51:18,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 21:51:18,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:51:18,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 21:51:18,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:51:18,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:51:18,867 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 14 treesize of output 16 [2023-01-27 21:51:18,945 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 15 treesize of output 7 [2023-01-27 21:51:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:51:18,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:51:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:51:19,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433547263] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 21:51:19,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 21:51:19,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 10] total 25 [2023-01-27 21:51:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533496159] [2023-01-27 21:51:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:51:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 21:51:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:51:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 21:51:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=515, Unknown=1, NotChecked=0, Total=650 [2023-01-27 21:51:19,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 296 [2023-01-27 21:51:19,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 610 transitions, 10508 flow. Second operand has 9 states, 9 states have (on average 111.33333333333333) internal successors, (1002), 9 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:51:19,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:51:19,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 296 [2023-01-27 21:51:19,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:51:27,481 WARN L222 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:51:34,724 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 21:52:00,178 INFO L130 PetriNetUnfolder]: 61493/87072 cut-off events. [2023-01-27 21:52:00,179 INFO L131 PetriNetUnfolder]: For 13762887/13765592 co-relation queries the response was YES. [2023-01-27 21:52:01,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074529 conditions, 87072 events. 61493/87072 cut-off events. For 13762887/13765592 co-relation queries the response was YES. Maximal size of possible extension queue 3095. Compared 597309 event pairs, 13502 based on Foata normal form. 2291/89311 useless extension candidates. Maximal degree in co-relation 1074354. Up to 35116 conditions per place. [2023-01-27 21:52:02,250 INFO L137 encePairwiseOnDemand]: 284/296 looper letters, 618 selfloop transitions, 203 changer transitions 287/1132 dead transitions. [2023-01-27 21:52:02,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1132 transitions, 22474 flow [2023-01-27 21:52:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 21:52:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 21:52:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1595 transitions. [2023-01-27 21:52:02,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4145010395010395 [2023-01-27 21:52:02,253 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1595 transitions. [2023-01-27 21:52:02,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1595 transitions. [2023-01-27 21:52:02,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:52:02,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1595 transitions. [2023-01-27 21:52:02,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 122.6923076923077) internal successors, (1595), 13 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:52:02,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 296.0) internal successors, (4144), 14 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:52:02,258 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 296.0) internal successors, (4144), 14 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:52:02,258 INFO L175 Difference]: Start difference. First operand has 400 places, 610 transitions, 10508 flow. Second operand 13 states and 1595 transitions. [2023-01-27 21:52:02,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1132 transitions, 22474 flow [2023-01-27 21:54:31,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1132 transitions, 19809 flow, removed 756 selfloop flow, removed 97 redundant places. [2023-01-27 21:54:31,436 INFO L231 Difference]: Finished difference. Result has 250 places, 658 transitions, 10874 flow [2023-01-27 21:54:31,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=9427, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10874, PETRI_PLACES=250, PETRI_TRANSITIONS=658} [2023-01-27 21:54:31,437 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 210 predicate places. [2023-01-27 21:54:31,437 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 658 transitions, 10874 flow [2023-01-27 21:54:31,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.33333333333333) internal successors, (1002), 9 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:54:31,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:54:31,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:54:31,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 21:54:31,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:54:31,641 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:54:31,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:54:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash 870778556, now seen corresponding path program 10 times [2023-01-27 21:54:31,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:54:31,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492174125] [2023-01-27 21:54:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:54:31,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:54:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:54:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 21:54:32,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:54:32,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492174125] [2023-01-27 21:54:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492174125] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:54:32,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919278945] [2023-01-27 21:54:32,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 21:54:32,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:54:32,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:54:32,002 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:54:32,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 21:54:32,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 21:54:32,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:54:32,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-27 21:54:32,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:54:32,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:54:32,233 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 14 treesize of output 16 [2023-01-27 21:54:32,292 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 15 treesize of output 7 [2023-01-27 21:54:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:54:32,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:54:32,683 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 27 treesize of output 19 [2023-01-27 21:54:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:54:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919278945] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-27 21:54:32,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-27 21:54:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 9] total 25 [2023-01-27 21:54:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095447142] [2023-01-27 21:54:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 21:54:32,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 21:54:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:54:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 21:54:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=561, Unknown=9, NotChecked=0, Total=702 [2023-01-27 21:54:32,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 296 [2023-01-27 21:54:32,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 658 transitions, 10874 flow. Second operand has 12 states, 12 states have (on average 107.5) internal successors, (1290), 12 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:54:32,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:54:32,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 296 [2023-01-27 21:54:32,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:54:51,552 INFO L130 PetriNetUnfolder]: 57999/82506 cut-off events. [2023-01-27 21:54:51,553 INFO L131 PetriNetUnfolder]: For 4057709/4059518 co-relation queries the response was YES. [2023-01-27 21:54:52,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699827 conditions, 82506 events. 57999/82506 cut-off events. For 4057709/4059518 co-relation queries the response was YES. Maximal size of possible extension queue 2942. Compared 565690 event pairs, 12380 based on Foata normal form. 1515/83981 useless extension candidates. Maximal degree in co-relation 699711. Up to 22402 conditions per place. [2023-01-27 21:54:52,801 INFO L137 encePairwiseOnDemand]: 285/296 looper letters, 474 selfloop transitions, 117 changer transitions 872/1487 dead transitions. [2023-01-27 21:54:52,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 1487 transitions, 27188 flow [2023-01-27 21:54:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 21:54:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 21:54:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1429 transitions. [2023-01-27 21:54:52,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40230855855855857 [2023-01-27 21:54:52,804 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1429 transitions. [2023-01-27 21:54:52,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1429 transitions. [2023-01-27 21:54:52,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:54:52,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1429 transitions. [2023-01-27 21:54:52,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.08333333333333) internal successors, (1429), 12 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:54:52,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 296.0) internal successors, (3848), 13 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:54:52,809 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 296.0) internal successors, (3848), 13 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:54:52,809 INFO L175 Difference]: Start difference. First operand has 250 places, 658 transitions, 10874 flow. Second operand 12 states and 1429 transitions. [2023-01-27 21:54:52,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 1487 transitions, 27188 flow [2023-01-27 21:55:12,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1487 transitions, 26827 flow, removed 144 selfloop flow, removed 9 redundant places. [2023-01-27 21:55:12,885 INFO L231 Difference]: Finished difference. Result has 259 places, 500 transitions, 8838 flow [2023-01-27 21:55:12,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=10688, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8838, PETRI_PLACES=259, PETRI_TRANSITIONS=500} [2023-01-27 21:55:12,886 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2023-01-27 21:55:12,886 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 500 transitions, 8838 flow [2023-01-27 21:55:12,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 107.5) internal successors, (1290), 12 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:12,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 21:55:12,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 21:55:12,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 21:55:13,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-27 21:55:13,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 21:55:13,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 21:55:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1030603632, now seen corresponding path program 11 times [2023-01-27 21:55:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 21:55:13,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364664212] [2023-01-27 21:55:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 21:55:13,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 21:55:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 21:55:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 21:55:13,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 21:55:13,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364664212] [2023-01-27 21:55:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364664212] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 21:55:13,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622770371] [2023-01-27 21:55:13,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 21:55:13,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 21:55:13,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 21:55:13,653 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 21:55:13,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 21:55:13,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 21:55:13,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 21:55:13,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-27 21:55:13,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 21:55:13,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:55:13,951 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 14 treesize of output 16 [2023-01-27 21:55:13,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 21:55:13,984 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 14 treesize of output 16 [2023-01-27 21:55:14,052 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 15 treesize of output 7 [2023-01-27 21:55:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:55:14,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 21:55:20,581 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 69 treesize of output 53 [2023-01-27 21:55:20,585 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 46 treesize of output 42 [2023-01-27 21:55:20,588 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 26 treesize of output 24 [2023-01-27 21:55:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 21:55:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622770371] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 21:55:20,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 21:55:20,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 30 [2023-01-27 21:55:20,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714981194] [2023-01-27 21:55:20,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 21:55:20,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-01-27 21:55:20,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 21:55:20,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-01-27 21:55:20,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=820, Unknown=19, NotChecked=0, Total=992 [2023-01-27 21:55:20,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 296 [2023-01-27 21:55:20,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 500 transitions, 8838 flow. Second operand has 32 states, 32 states have (on average 95.8125) internal successors, (3066), 32 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:20,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 21:55:20,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 296 [2023-01-27 21:55:20,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 21:55:37,737 INFO L130 PetriNetUnfolder]: 45303/64414 cut-off events. [2023-01-27 21:55:37,738 INFO L131 PetriNetUnfolder]: For 3177322/3177322 co-relation queries the response was YES. [2023-01-27 21:55:38,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547684 conditions, 64414 events. 45303/64414 cut-off events. For 3177322/3177322 co-relation queries the response was YES. Maximal size of possible extension queue 2360. Compared 425752 event pairs, 3946 based on Foata normal form. 64/64477 useless extension candidates. Maximal degree in co-relation 547566. Up to 21292 conditions per place. [2023-01-27 21:55:38,851 INFO L137 encePairwiseOnDemand]: 285/296 looper letters, 423 selfloop transitions, 99 changer transitions 956/1478 dead transitions. [2023-01-27 21:55:38,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1478 transitions, 28323 flow [2023-01-27 21:55:38,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-01-27 21:55:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-01-27 21:55:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4679 transitions. [2023-01-27 21:55:38,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3512762762762763 [2023-01-27 21:55:38,857 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4679 transitions. [2023-01-27 21:55:38,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4679 transitions. [2023-01-27 21:55:38,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 21:55:38,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4679 transitions. [2023-01-27 21:55:38,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 103.97777777777777) internal successors, (4679), 45 states have internal predecessors, (4679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:38,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 296.0) internal successors, (13616), 46 states have internal predecessors, (13616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:38,871 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 296.0) internal successors, (13616), 46 states have internal predecessors, (13616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 21:55:38,871 INFO L175 Difference]: Start difference. First operand has 259 places, 500 transitions, 8838 flow. Second operand 45 states and 4679 transitions. [2023-01-27 21:55:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1478 transitions, 28323 flow Received shutdown request... [2023-01-27 21:55:41,679 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:55:41,679 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 21:55:41,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 21:55:41,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 21:55:41,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-27 21:55:41,969 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-27 21:55:41,970 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-27 21:55:41,970 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 21:55:41,970 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 21:55:41,970 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-27 21:55:41,971 INFO L445 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1, 1] [2023-01-27 21:55:41,973 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 21:55:41,973 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 21:55:41,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 09:55:41 BasicIcfg [2023-01-27 21:55:41,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 21:55:41,976 INFO L158 Benchmark]: Toolchain (without parser) took 787757.26ms. Allocated memory was 367.0MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 326.0MB in the beginning and 13.9GB in the end (delta: -13.5GB). Peak memory consumption was 7.8GB. Max. memory is 16.0GB. [2023-01-27 21:55:41,976 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 212.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 21:55:41,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.26ms. Allocated memory is still 367.0MB. Free memory was 325.7MB in the beginning and 313.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 21:55:41,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.24ms. Allocated memory is still 367.0MB. Free memory was 313.8MB in the beginning and 311.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:55:41,976 INFO L158 Benchmark]: Boogie Preprocessor took 33.96ms. Allocated memory is still 367.0MB. Free memory was 311.8MB in the beginning and 310.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 21:55:41,977 INFO L158 Benchmark]: RCFGBuilder took 510.06ms. Allocated memory is still 367.0MB. Free memory was 310.1MB in the beginning and 285.6MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-27 21:55:41,977 INFO L158 Benchmark]: TraceAbstraction took 786955.57ms. Allocated memory was 367.0MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 343.1MB in the beginning and 13.9GB in the end (delta: -13.5GB). Peak memory consumption was 7.8GB. Max. memory is 16.0GB. [2023-01-27 21:55:41,978 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 255.9MB. Free memory is still 212.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 202.26ms. Allocated memory is still 367.0MB. Free memory was 325.7MB in the beginning and 313.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.24ms. Allocated memory is still 367.0MB. Free memory was 313.8MB in the beginning and 311.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.96ms. Allocated memory is still 367.0MB. Free memory was 311.8MB in the beginning and 310.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 510.06ms. Allocated memory is still 367.0MB. Free memory was 310.1MB in the beginning and 285.6MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 786955.57ms. Allocated memory was 367.0MB in the beginning and 15.5GB in the end (delta: 15.1GB). Free memory was 343.1MB in the beginning and 13.9GB in the end (delta: -13.5GB). Peak memory consumption was 7.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.8s, 147 PlacesBefore, 40 PlacesAfterwards, 146 TransitionsBefore, 31 TransitionsAfterwards, 2280 CoEnabledTransitionPairs, 7 FixpointIterations, 67 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 134 TotalNumberOfCompositions, 3482 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2552, independent: 2466, independent conditional: 0, independent unconditional: 2466, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1219, independent: 1190, independent conditional: 0, independent unconditional: 1190, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2552, independent: 1276, independent conditional: 0, independent unconditional: 1276, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 1219, unknown conditional: 0, unknown unconditional: 1219] , Statistics on independence cache: Total cache size (in pairs): 107, Positive cache size: 97, Positive conditional cache size: 0, Positive unconditional cache size: 97, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 113]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 190 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 786.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 745.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 4994 SdHoareTripleChecker+Valid, 12.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4994 mSDsluCounter, 324 SdHoareTripleChecker+Invalid, 11.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 5320 IncrementalHoareTripleChecker+Unchecked, 286 mSDsCounter, 498 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15200 IncrementalHoareTripleChecker+Invalid, 21029 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 498 mSolverCounterUnsat, 38 mSDtfsCounter, 15200 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1106 GetRequests, 398 SyntacticMatches, 28 SemanticMatches, 680 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 25035 ImplicationChecksByTransitivity, 171.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10874occurred in iteration=13, InterpolantAutomatonStates: 434, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 32.8s InterpolantComputationTime, 734 NumberOfCodeBlocks, 734 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 980 ConstructedInterpolants, 45 QuantifiedInterpolants, 10388 SizeOfPredicates, 161 NumberOfNonLiveVariables, 2610 ConjunctsInSsa, 293 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 72/122 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown