/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 00:50:17,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:50:17,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:50:17,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-28 00:50:17,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:50:17,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:50:17,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:50:17,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:50:17,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:50:17,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:50:17,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:50:17,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:50:17,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:50:17,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:50:17,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:50:17,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:50:17,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:50:17,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 00:50:17,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 00:50:17,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 00:50:17,442 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 [2023-01-28 00:50:17,462 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:50:17,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:50:17,463 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:50:17,463 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:50:17,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:50:17,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:50:17,464 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:50:17,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:50:17,465 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:50:17,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:50:17,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:50:17,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:50:17,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:50:17,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:50:17,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:17,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:50:17,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:50:17,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:50:17,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:50:17,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:50:17,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:50:17,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:50:17,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:50:17,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:50:17,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:50:17,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:50:17,655 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:50:17,655 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:50:17,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-01-28 00:50:18,729 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:50:18,931 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:50:18,932 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-01-28 00:50:18,950 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc6d9bce/dcb23a9721b844ba8d5b58605de67b5b/FLAGd629b8f33 [2023-01-28 00:50:18,961 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbc6d9bce/dcb23a9721b844ba8d5b58605de67b5b [2023-01-28 00:50:18,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:50:18,963 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:50:18,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:18,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:50:18,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:50:18,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:18" (1/1) ... [2023-01-28 00:50:18,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ce07ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:18, skipping insertion in model container [2023-01-28 00:50:18,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:18" (1/1) ... [2023-01-28 00:50:18,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:50:18,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:50:19,084 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 00:50:19,361 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-01-28 00:50:19,385 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:19,392 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:50:19,400 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-28 00:50:19,420 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i[75002,75015] [2023-01-28 00:50:19,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:19,491 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:50:19,491 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:50:19,491 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 00:50:19,496 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:50:19,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19 WrapperNode [2023-01-28 00:50:19,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:19,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:19,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:50:19,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:50:19,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,549 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-01-28 00:50:19,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:19,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:50:19,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:50:19,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:50:19,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:50:19,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:50:19,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:50:19,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:50:19,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (1/1) ... [2023-01-28 00:50:19,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:19,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:50:19,601 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) [2023-01-28 00:50:19,603 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 [2023-01-28 00:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 00:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:50:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-28 00:50:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:50:19,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:50:19,626 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:50:19,832 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:50:19,833 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:50:20,056 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:50:20,074 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:50:20,074 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-28 00:50:20,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:20 BoogieIcfgContainer [2023-01-28 00:50:20,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:50:20,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:50:20,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:50:20,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:50:20,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:50:18" (1/3) ... [2023-01-28 00:50:20,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1340ce31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:20, skipping insertion in model container [2023-01-28 00:50:20,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:19" (2/3) ... [2023-01-28 00:50:20,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1340ce31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:20, skipping insertion in model container [2023-01-28 00:50:20,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:20" (3/3) ... [2023-01-28 00:50:20,080 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2023-01-28 00:50:20,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:50:20,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-01-28 00:50:20,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:50:20,172 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 00:50:20,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 147 transitions, 310 flow [2023-01-28 00:50:20,269 INFO L130 PetriNetUnfolder]: 8/185 cut-off events. [2023-01-28 00:50:20,269 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:20,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 185 events. 8/185 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 309 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 101. Up to 4 conditions per place. [2023-01-28 00:50:20,273 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 147 transitions, 310 flow [2023-01-28 00:50:20,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 135 transitions, 282 flow [2023-01-28 00:50:20,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:50:20,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 135 transitions, 282 flow [2023-01-28 00:50:20,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 135 transitions, 282 flow [2023-01-28 00:50:20,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 135 transitions, 282 flow [2023-01-28 00:50:20,320 INFO L130 PetriNetUnfolder]: 5/166 cut-off events. [2023-01-28 00:50:20,321 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:20,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 166 events. 5/166 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 257 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 91. Up to 4 conditions per place. [2023-01-28 00:50:20,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 1780 [2023-01-28 00:50:26,593 INFO L134 LiptonReduction]: Checked pairs total: 2885 [2023-01-28 00:50:26,593 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-01-28 00:50:26,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:50:26,621 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;@9d49d6f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:50:26,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 00:50:26,626 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-28 00:50:26,626 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:50:26,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:26,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-28 00:50:26,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:26,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash 484403235, now seen corresponding path program 1 times [2023-01-28 00:50:26,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:26,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222366971] [2023-01-28 00:50:26,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:26,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222366971] [2023-01-28 00:50:27,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222366971] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:27,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:27,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:27,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648500547] [2023-01-28 00:50:27,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:27,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:27,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:27,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 286 [2023-01-28 00:50:27,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:27,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 286 [2023-01-28 00:50:27,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:27,313 INFO L130 PetriNetUnfolder]: 242/444 cut-off events. [2023-01-28 00:50:27,313 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-28 00:50:27,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 444 events. 242/444 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1815 event pairs, 137 based on Foata normal form. 17/409 useless extension candidates. Maximal degree in co-relation 830. Up to 369 conditions per place. [2023-01-28 00:50:27,316 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-01-28 00:50:27,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 144 flow [2023-01-28 00:50:27,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-01-28 00:50:27,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2023-01-28 00:50:27,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-01-28 00:50:27,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-01-28 00:50:27,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:27,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-01-28 00:50:27,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,345 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 64 flow. Second operand 3 states and 351 transitions. [2023-01-28 00:50:27,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 144 flow [2023-01-28 00:50:27,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:27,349 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 90 flow [2023-01-28 00:50:27,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-01-28 00:50:27,355 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-01-28 00:50:27,356 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 90 flow [2023-01-28 00:50:27,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:27,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-28 00:50:27,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:50:27,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:27,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:27,358 INFO L85 PathProgramCache]: Analyzing trace with hash 15625942, now seen corresponding path program 1 times [2023-01-28 00:50:27,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:27,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568291660] [2023-01-28 00:50:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:27,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:27,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:27,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568291660] [2023-01-28 00:50:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568291660] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:27,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825099075] [2023-01-28 00:50:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:27,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 286 [2023-01-28 00:50:27,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:27,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 286 [2023-01-28 00:50:27,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:27,663 INFO L130 PetriNetUnfolder]: 291/536 cut-off events. [2023-01-28 00:50:27,664 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-01-28 00:50:27,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 536 events. 291/536 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2378 event pairs, 151 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 511. Up to 461 conditions per place. [2023-01-28 00:50:27,669 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 30 selfloop transitions, 9 changer transitions 2/41 dead transitions. [2023-01-28 00:50:27,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 219 flow [2023-01-28 00:50:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-01-28 00:50:27,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675990675990675 [2023-01-28 00:50:27,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-01-28 00:50:27,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-01-28 00:50:27,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:27,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-01-28 00:50:27,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,679 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,679 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 90 flow. Second operand 3 states and 349 transitions. [2023-01-28 00:50:27,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 219 flow [2023-01-28 00:50:27,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:27,683 INFO L231 Difference]: Finished difference. Result has 31 places, 35 transitions, 155 flow [2023-01-28 00:50:27,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=31, PETRI_TRANSITIONS=35} [2023-01-28 00:50:27,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-28 00:50:27,683 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 35 transitions, 155 flow [2023-01-28 00:50:27,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:27,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:50:27,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:27,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash 957445618, now seen corresponding path program 1 times [2023-01-28 00:50:27,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:27,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474065913] [2023-01-28 00:50:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:27,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474065913] [2023-01-28 00:50:27,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474065913] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:27,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:27,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:27,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373879663] [2023-01-28 00:50:27,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:27,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:27,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:27,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 286 [2023-01-28 00:50:27,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 35 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:27,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 286 [2023-01-28 00:50:27,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:27,842 INFO L130 PetriNetUnfolder]: 72/144 cut-off events. [2023-01-28 00:50:27,843 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-01-28 00:50:27,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 144 events. 72/144 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 399 event pairs, 48 based on Foata normal form. 16/159 useless extension candidates. Maximal degree in co-relation 409. Up to 105 conditions per place. [2023-01-28 00:50:27,844 INFO L137 encePairwiseOnDemand]: 283/286 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-01-28 00:50:27,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 132 flow [2023-01-28 00:50:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-01-28 00:50:27,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766899766899767 [2023-01-28 00:50:27,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-01-28 00:50:27,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-01-28 00:50:27,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:27,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-01-28 00:50:27,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,848 INFO L175 Difference]: Start difference. First operand has 31 places, 35 transitions, 155 flow. Second operand 3 states and 409 transitions. [2023-01-28 00:50:27,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 132 flow [2023-01-28 00:50:27,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:27,850 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 52 flow [2023-01-28 00:50:27,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-01-28 00:50:27,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2023-01-28 00:50:27,853 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 52 flow [2023-01-28 00:50:27,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:27,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:27,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:27,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:50:27,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:27,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash -977371176, now seen corresponding path program 1 times [2023-01-28 00:50:27,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:27,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982155358] [2023-01-28 00:50:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:27,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:28,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982155358] [2023-01-28 00:50:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982155358] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:28,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:28,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:50:28,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888024040] [2023-01-28 00:50:28,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:28,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:50:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:28,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:50:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:50:28,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 286 [2023-01-28 00:50:28,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 52 flow. Second operand has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:28,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:28,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 286 [2023-01-28 00:50:28,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:28,604 INFO L130 PetriNetUnfolder]: 94/208 cut-off events. [2023-01-28 00:50:28,605 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-01-28 00:50:28,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 208 events. 94/208 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 746 event pairs, 9 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 536. Up to 83 conditions per place. [2023-01-28 00:50:28,606 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-01-28 00:50:28,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 216 flow [2023-01-28 00:50:28,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:50:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:50:28,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2023-01-28 00:50:28,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34440559440559443 [2023-01-28 00:50:28,608 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 591 transitions. [2023-01-28 00:50:28,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 591 transitions. [2023-01-28 00:50:28,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:28,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 591 transitions. [2023-01-28 00:50:28,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 98.5) internal successors, (591), 6 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:28,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:28,612 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:28,612 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 52 flow. Second operand 6 states and 591 transitions. [2023-01-28 00:50:28,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 216 flow [2023-01-28 00:50:28,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:50:28,613 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 108 flow [2023-01-28 00:50:28,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-01-28 00:50:28,613 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-01-28 00:50:28,614 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 108 flow [2023-01-28 00:50:28,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:28,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:28,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:50:28,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:28,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash -315346906, now seen corresponding path program 2 times [2023-01-28 00:50:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:28,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734955011] [2023-01-28 00:50:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:29,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:29,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734955011] [2023-01-28 00:50:29,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734955011] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:29,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:29,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 00:50:29,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856661998] [2023-01-28 00:50:29,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:29,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 00:50:29,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:29,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 00:50:29,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 00:50:29,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 286 [2023-01-28 00:50:29,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:29,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:29,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 286 [2023-01-28 00:50:29,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:29,268 INFO L130 PetriNetUnfolder]: 95/216 cut-off events. [2023-01-28 00:50:29,268 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-01-28 00:50:29,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 216 events. 95/216 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 789 event pairs, 26 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 621. Up to 80 conditions per place. [2023-01-28 00:50:29,270 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 31 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2023-01-28 00:50:29,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 259 flow [2023-01-28 00:50:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 00:50:29,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 00:50:29,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2023-01-28 00:50:29,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34032634032634035 [2023-01-28 00:50:29,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 584 transitions. [2023-01-28 00:50:29,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 584 transitions. [2023-01-28 00:50:29,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:29,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 584 transitions. [2023-01-28 00:50:29,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:29,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:29,276 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 286.0) internal successors, (2002), 7 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:29,276 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 108 flow. Second operand 6 states and 584 transitions. [2023-01-28 00:50:29,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 259 flow [2023-01-28 00:50:29,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:50:29,279 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 151 flow [2023-01-28 00:50:29,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=151, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-01-28 00:50:29,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-28 00:50:29,281 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 151 flow [2023-01-28 00:50:29,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 93.42857142857143) internal successors, (654), 7 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:29,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:29,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:29,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:50:29,282 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:29,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash -315346905, now seen corresponding path program 1 times [2023-01-28 00:50:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:29,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425992628] [2023-01-28 00:50:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:30,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425992628] [2023-01-28 00:50:30,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425992628] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:30,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:30,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 00:50:30,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542942504] [2023-01-28 00:50:30,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:30,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 00:50:30,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 00:50:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-01-28 00:50:30,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 00:50:30,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 151 flow. Second operand has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:30,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:30,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 00:50:30,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:31,243 INFO L130 PetriNetUnfolder]: 136/311 cut-off events. [2023-01-28 00:50:31,243 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-01-28 00:50:31,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 311 events. 136/311 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1366 event pairs, 30 based on Foata normal form. 2/312 useless extension candidates. Maximal degree in co-relation 977. Up to 178 conditions per place. [2023-01-28 00:50:31,245 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 51 selfloop transitions, 22 changer transitions 14/87 dead transitions. [2023-01-28 00:50:31,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 87 transitions, 631 flow [2023-01-28 00:50:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 00:50:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 00:50:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1203 transitions. [2023-01-28 00:50:31,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3235610543302851 [2023-01-28 00:50:31,248 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1203 transitions. [2023-01-28 00:50:31,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1203 transitions. [2023-01-28 00:50:31,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:31,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1203 transitions. [2023-01-28 00:50:31,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.53846153846153) internal successors, (1203), 13 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,254 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,254 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 151 flow. Second operand 13 states and 1203 transitions. [2023-01-28 00:50:31,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 87 transitions, 631 flow [2023-01-28 00:50:31,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 87 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:50:31,256 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 395 flow [2023-01-28 00:50:31,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=395, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-01-28 00:50:31,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2023-01-28 00:50:31,257 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 395 flow [2023-01-28 00:50:31,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:31,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:31,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:50:31,258 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:31,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 279140853, now seen corresponding path program 2 times [2023-01-28 00:50:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562450283] [2023-01-28 00:50:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:32,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:32,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562450283] [2023-01-28 00:50:32,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562450283] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:32,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:32,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 00:50:32,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795267004] [2023-01-28 00:50:32,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:32,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 00:50:32,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:32,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 00:50:32,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 00:50:32,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 00:50:32,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 395 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:32,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:32,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 00:50:32,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:33,178 INFO L130 PetriNetUnfolder]: 159/370 cut-off events. [2023-01-28 00:50:33,178 INFO L131 PetriNetUnfolder]: For 938/938 co-relation queries the response was YES. [2023-01-28 00:50:33,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 370 events. 159/370 cut-off events. For 938/938 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1721 event pairs, 34 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1488. Up to 203 conditions per place. [2023-01-28 00:50:33,180 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 64 selfloop transitions, 36 changer transitions 16/116 dead transitions. [2023-01-28 00:50:33,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 1067 flow [2023-01-28 00:50:33,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 00:50:33,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 00:50:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1205 transitions. [2023-01-28 00:50:33,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3240989779451318 [2023-01-28 00:50:33,183 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1205 transitions. [2023-01-28 00:50:33,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1205 transitions. [2023-01-28 00:50:33,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:33,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1205 transitions. [2023-01-28 00:50:33,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 92.6923076923077) internal successors, (1205), 13 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,189 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 286.0) internal successors, (4004), 14 states have internal predecessors, (4004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,189 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 395 flow. Second operand 13 states and 1205 transitions. [2023-01-28 00:50:33,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 1067 flow [2023-01-28 00:50:33,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 966 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:33,194 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 689 flow [2023-01-28 00:50:33,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=689, PETRI_PLACES=63, PETRI_TRANSITIONS=76} [2023-01-28 00:50:33,195 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2023-01-28 00:50:33,195 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 689 flow [2023-01-28 00:50:33,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:33,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:33,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:33,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:50:33,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:33,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1141973469, now seen corresponding path program 3 times [2023-01-28 00:50:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50134882] [2023-01-28 00:50:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:33,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:34,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50134882] [2023-01-28 00:50:34,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50134882] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:34,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:34,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-28 00:50:34,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552206306] [2023-01-28 00:50:34,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:34,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 00:50:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:34,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 00:50:34,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-01-28 00:50:34,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 00:50:34,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 76 transitions, 689 flow. Second operand has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:34,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:34,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 00:50:34,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:34,995 INFO L130 PetriNetUnfolder]: 214/486 cut-off events. [2023-01-28 00:50:34,995 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2023-01-28 00:50:34,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 486 events. 214/486 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2451 event pairs, 52 based on Foata normal form. 2/485 useless extension candidates. Maximal degree in co-relation 2174. Up to 254 conditions per place. [2023-01-28 00:50:34,998 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 85 selfloop transitions, 42 changer transitions 16/143 dead transitions. [2023-01-28 00:50:34,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 143 transitions, 1449 flow [2023-01-28 00:50:34,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 00:50:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 00:50:35,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1389 transitions. [2023-01-28 00:50:35,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3237762237762238 [2023-01-28 00:50:35,002 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1389 transitions. [2023-01-28 00:50:35,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1389 transitions. [2023-01-28 00:50:35,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:35,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1389 transitions. [2023-01-28 00:50:35,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 92.6) internal successors, (1389), 15 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,010 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 286.0) internal successors, (4576), 16 states have internal predecessors, (4576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,010 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 689 flow. Second operand 15 states and 1389 transitions. [2023-01-28 00:50:35,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 143 transitions, 1449 flow [2023-01-28 00:50:35,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 1345 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:35,019 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 987 flow [2023-01-28 00:50:35,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=987, PETRI_PLACES=78, PETRI_TRANSITIONS=96} [2023-01-28 00:50:35,021 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2023-01-28 00:50:35,021 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 987 flow [2023-01-28 00:50:35,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 88.41666666666667) internal successors, (1061), 12 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:35,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:35,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:35,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 00:50:35,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:35,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1612037109, now seen corresponding path program 4 times [2023-01-28 00:50:35,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626959632] [2023-01-28 00:50:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:35,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:36,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:36,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626959632] [2023-01-28 00:50:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626959632] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:36,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 00:50:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707614015] [2023-01-28 00:50:36,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:36,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 00:50:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:36,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 00:50:36,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 00:50:36,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 00:50:36,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 96 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:36,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 00:50:36,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:36,884 INFO L130 PetriNetUnfolder]: 303/653 cut-off events. [2023-01-28 00:50:36,884 INFO L131 PetriNetUnfolder]: For 2475/2475 co-relation queries the response was YES. [2023-01-28 00:50:36,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3212 conditions, 653 events. 303/653 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3501 event pairs, 59 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 3185. Up to 374 conditions per place. [2023-01-28 00:50:36,889 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 89 selfloop transitions, 62 changer transitions 15/166 dead transitions. [2023-01-28 00:50:36,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 166 transitions, 1909 flow [2023-01-28 00:50:36,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 00:50:36,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 00:50:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1113 transitions. [2023-01-28 00:50:36,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3243006993006993 [2023-01-28 00:50:36,893 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1113 transitions. [2023-01-28 00:50:36,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1113 transitions. [2023-01-28 00:50:36,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:36,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1113 transitions. [2023-01-28 00:50:36,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.75) internal successors, (1113), 12 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 286.0) internal successors, (3718), 13 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,898 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 286.0) internal successors, (3718), 13 states have internal predecessors, (3718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,898 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 987 flow. Second operand 12 states and 1113 transitions. [2023-01-28 00:50:36,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 166 transitions, 1909 flow [2023-01-28 00:50:36,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 166 transitions, 1832 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-01-28 00:50:36,912 INFO L231 Difference]: Finished difference. Result has 86 places, 124 transitions, 1443 flow [2023-01-28 00:50:36,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1443, PETRI_PLACES=86, PETRI_TRANSITIONS=124} [2023-01-28 00:50:36,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-28 00:50:36,912 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 1443 flow [2023-01-28 00:50:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:36,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:36,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 00:50:36,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:36,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:36,913 INFO L85 PathProgramCache]: Analyzing trace with hash 414718599, now seen corresponding path program 5 times [2023-01-28 00:50:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:36,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84125656] [2023-01-28 00:50:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:36,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:37,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:37,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:37,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84125656] [2023-01-28 00:50:37,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84125656] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:37,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:37,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 00:50:37,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685807680] [2023-01-28 00:50:37,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:37,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 00:50:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:37,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 00:50:37,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 00:50:37,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 00:50:37,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 124 transitions, 1443 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:37,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:37,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 00:50:37,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:38,696 INFO L130 PetriNetUnfolder]: 347/809 cut-off events. [2023-01-28 00:50:38,696 INFO L131 PetriNetUnfolder]: For 3823/3823 co-relation queries the response was YES. [2023-01-28 00:50:38,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 809 events. 347/809 cut-off events. For 3823/3823 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4899 event pairs, 97 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 4212. Up to 448 conditions per place. [2023-01-28 00:50:38,701 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 143 selfloop transitions, 61 changer transitions 16/220 dead transitions. [2023-01-28 00:50:38,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 220 transitions, 2706 flow [2023-01-28 00:50:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 00:50:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 00:50:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1310 transitions. [2023-01-28 00:50:38,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271728271728272 [2023-01-28 00:50:38,704 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1310 transitions. [2023-01-28 00:50:38,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1310 transitions. [2023-01-28 00:50:38,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:38,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1310 transitions. [2023-01-28 00:50:38,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.57142857142857) internal successors, (1310), 14 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,710 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,710 INFO L175 Difference]: Start difference. First operand has 86 places, 124 transitions, 1443 flow. Second operand 14 states and 1310 transitions. [2023-01-28 00:50:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 220 transitions, 2706 flow [2023-01-28 00:50:38,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 220 transitions, 2627 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:38,739 INFO L231 Difference]: Finished difference. Result has 100 places, 158 transitions, 2003 flow [2023-01-28 00:50:38,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2003, PETRI_PLACES=100, PETRI_TRANSITIONS=158} [2023-01-28 00:50:38,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2023-01-28 00:50:38,740 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 158 transitions, 2003 flow [2023-01-28 00:50:38,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:38,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:38,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:38,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-28 00:50:38,741 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:38,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -866076185, now seen corresponding path program 6 times [2023-01-28 00:50:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:38,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430212284] [2023-01-28 00:50:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:38,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:39,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:39,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:39,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430212284] [2023-01-28 00:50:39,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430212284] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:39,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:39,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-28 00:50:39,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30891537] [2023-01-28 00:50:39,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:39,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 00:50:39,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:39,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 00:50:39,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-28 00:50:39,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-28 00:50:39,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 158 transitions, 2003 flow. Second operand has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:39,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:39,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-28 00:50:39,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:40,562 INFO L130 PetriNetUnfolder]: 344/801 cut-off events. [2023-01-28 00:50:40,562 INFO L131 PetriNetUnfolder]: For 4889/4889 co-relation queries the response was YES. [2023-01-28 00:50:40,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 801 events. 344/801 cut-off events. For 4889/4889 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4824 event pairs, 115 based on Foata normal form. 2/797 useless extension candidates. Maximal degree in co-relation 4436. Up to 520 conditions per place. [2023-01-28 00:50:40,567 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 134 selfloop transitions, 58 changer transitions 15/207 dead transitions. [2023-01-28 00:50:40,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 207 transitions, 2727 flow [2023-01-28 00:50:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-28 00:50:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-28 00:50:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1302 transitions. [2023-01-28 00:50:40,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32517482517482516 [2023-01-28 00:50:40,571 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1302 transitions. [2023-01-28 00:50:40,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1302 transitions. [2023-01-28 00:50:40,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:40,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1302 transitions. [2023-01-28 00:50:40,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:40,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:40,577 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 286.0) internal successors, (4290), 15 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:40,577 INFO L175 Difference]: Start difference. First operand has 100 places, 158 transitions, 2003 flow. Second operand 14 states and 1302 transitions. [2023-01-28 00:50:40,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 207 transitions, 2727 flow [2023-01-28 00:50:40,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 2630 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-01-28 00:50:40,595 INFO L231 Difference]: Finished difference. Result has 110 places, 163 transitions, 2144 flow [2023-01-28 00:50:40,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=1928, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2144, PETRI_PLACES=110, PETRI_TRANSITIONS=163} [2023-01-28 00:50:40,596 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2023-01-28 00:50:40,596 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 163 transitions, 2144 flow [2023-01-28 00:50:40,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 88.3076923076923) internal successors, (1148), 13 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 00:50:40,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:40,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:40,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-28 00:50:40,597 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 00:50:40,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:40,597 INFO L85 PathProgramCache]: Analyzing trace with hash -627786791, now seen corresponding path program 7 times [2023-01-28 00:50:40,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:40,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182352875] [2023-01-28 00:50:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:40,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:50:40,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 00:50:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 00:50:40,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 00:50:40,656 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 00:50:40,657 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 00:50:40,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-28 00:50:40,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-01-28 00:50:40,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-28 00:50:40,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-28 00:50:40,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-01-28 00:50:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-28 00:50:40,659 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1] [2023-01-28 00:50:40,662 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:50:40,662 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:50:40,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:50:40 BasicIcfg [2023-01-28 00:50:40,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:50:40,698 INFO L158 Benchmark]: Toolchain (without parser) took 21734.58ms. Allocated memory was 564.1MB in the beginning and 977.3MB in the end (delta: 413.1MB). Free memory was 512.5MB in the beginning and 590.8MB in the end (delta: -78.2MB). Peak memory consumption was 337.1MB. Max. memory is 16.0GB. [2023-01-28 00:50:40,698 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory is still 301.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:50:40,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.51ms. Allocated memory is still 564.1MB. Free memory was 512.2MB in the beginning and 458.1MB in the end (delta: 54.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-01-28 00:50:40,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.59ms. Allocated memory is still 564.1MB. Free memory was 458.1MB in the beginning and 529.2MB in the end (delta: -71.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. [2023-01-28 00:50:40,698 INFO L158 Benchmark]: Boogie Preprocessor took 26.15ms. Allocated memory is still 564.1MB. Free memory was 529.2MB in the beginning and 526.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:50:40,698 INFO L158 Benchmark]: RCFGBuilder took 498.16ms. Allocated memory is still 564.1MB. Free memory was 526.0MB in the beginning and 503.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-01-28 00:50:40,699 INFO L158 Benchmark]: TraceAbstraction took 20620.72ms. Allocated memory was 564.1MB in the beginning and 977.3MB in the end (delta: 413.1MB). Free memory was 501.9MB in the beginning and 590.8MB in the end (delta: -88.8MB). Peak memory consumption was 324.3MB. Max. memory is 16.0GB. [2023-01-28 00:50:40,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 352.3MB. Free memory is still 301.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 532.51ms. Allocated memory is still 564.1MB. Free memory was 512.2MB in the beginning and 458.1MB in the end (delta: 54.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.59ms. Allocated memory is still 564.1MB. Free memory was 458.1MB in the beginning and 529.2MB in the end (delta: -71.1MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.15ms. Allocated memory is still 564.1MB. Free memory was 529.2MB in the beginning and 526.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 498.16ms. Allocated memory is still 564.1MB. Free memory was 526.0MB in the beginning and 503.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 20620.72ms. Allocated memory was 564.1MB in the beginning and 977.3MB in the end (delta: 413.1MB). Free memory was 501.9MB in the beginning and 590.8MB in the end (delta: -88.8MB). Peak memory consumption was 324.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.3s, 137 PlacesBefore, 30 PlacesAfterwards, 135 TransitionsBefore, 26 TransitionsAfterwards, 1780 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 139 TotalNumberOfCompositions, 2885 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1578, independent: 1447, independent conditional: 0, independent unconditional: 1447, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 929, independent: 897, independent conditional: 0, independent unconditional: 897, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1578, independent: 550, independent conditional: 0, independent unconditional: 550, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 929, unknown conditional: 0, unknown unconditional: 929] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; [L1731] CALL, EXPR 0 my_drv_init() [L1725] 0 return 0; [L1731] RET, EXPR 0 my_drv_init() [L1731] 0 int ret = my_drv_init(); [L1732] COND TRUE 0 ret==0 [L1733] 0 int probe_ret; [L1734] 0 struct my_data data; [L1735] CALL, EXPR 0 my_drv_probe(&data) [L1704] 0 struct device *d = &data->dev; [L1706] 0 data->shared.a = 0 [L1707] 0 data->shared.b = 0 [L1708] 0 int res = __VERIFIER_nondet_int(); [L1709] COND FALSE 0 !(\read(res)) [L1711] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={6:24}, d={6:24}, data={6:0}, data={6:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=-2, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1712] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, d={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=-1, res=0, t1={3:0}, t2={4:0}] [L1713] 0 return 0; [L1735] RET, EXPR 0 my_drv_probe(&data) [L1689] 2 struct device *dev = (struct device*)arg; [L1690] 2 struct my_data *data; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1693] 2 data->shared.a = 1 VAL [__mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1735] 0 probe_ret = my_drv_probe(&data) [L1736] COND TRUE 0 probe_ret==0 [L1737] CALL 0 my_drv_disconnect(&data) [L1719] 0 void *status; [L1720] 0 \read(t1) VAL [\read(t1)=-2, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 [L1701] 1 return 0; [L1699] 2 data->shared.b = lb + 1 [L1701] 2 return 0; [L1720] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=-2, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1721] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, status={5:0}, t1={3:0}, t2={4:0}] [L1721] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=-1, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, data={6:0}, data={6:0}, dev={6:24}, lb=0, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1737] RET 0 my_drv_disconnect(&data) [L1738] EXPR 0 data.shared.a [L1738] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) [L1738] RET 0 ldv_assert(data.shared.a==1) [L1739] EXPR 0 data.shared.b [L1739] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={6:24}, arg={6:24}, data={6:0}, dev={6:24}, expression=0, lb=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1711]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 154 locations, 6 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: 20.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 357 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3521 IncrementalHoareTripleChecker+Invalid, 3708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 187 mSolverCounterUnsat, 1 mSDtfsCounter, 3521 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2144occurred in iteration=11, InterpolantAutomatonStates: 102, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.9s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 143 ConstructedInterpolants, 0 QuantifiedInterpolants, 3191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2023-01-28 00:50:40,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...