/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:22:11,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:22:11,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:22:11,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-27 18:22:11,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:22:11,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:22:11,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:22:11,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:22:11,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:22:11,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:22:11,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:22:11,691 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:22:11,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:22:11,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:22:11,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:22:11,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:22:11,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:22:11,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:22:11,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:22:11,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:22:11,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 18:22:11,740 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:22:11,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:22:11,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:22:11,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:22:11,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:22:11,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:22:11,742 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:22:11,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:22:11,743 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:22:11,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:22:11,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:22:11,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:22:11,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:22:11,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:22:11,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:22:11,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:22:11,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:22:11,745 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:22:11,745 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:22:11,745 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:22:11,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:22:11,745 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:22:11,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:22:11,745 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:22:11,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:22:11,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:22:11,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:22:11,951 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:22:11,952 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:22:11,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-01-27 18:22:12,964 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:22:13,199 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:22:13,199 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_2-container_of.i [2023-01-27 18:22:13,212 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81ddc496/bbb9acec9e68428cad297271da996584/FLAG9f789a137 [2023-01-27 18:22:13,221 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a81ddc496/bbb9acec9e68428cad297271da996584 [2023-01-27 18:22:13,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:22:13,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:22:13,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:22:13,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:22:13,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:22:13,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e448e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13, skipping insertion in model container [2023-01-27 18:22:13,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:22:13,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:22:13,384 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 18:22:13,685 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] [2023-01-27 18:22:13,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:22:13,716 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:22:13,724 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-01-27 18:22:13,742 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] [2023-01-27 18:22:13,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:22:13,812 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:22:13,813 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:22:13,813 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:22:13,817 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:22:13,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13 WrapperNode [2023-01-27 18:22:13,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:22:13,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:22:13,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:22:13,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:22:13,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,879 INFO L138 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 116 [2023-01-27 18:22:13,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:22:13,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:22:13,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:22:13,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:22:13,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,903 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:22:13,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:22:13,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:22:13,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:22:13,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (1/1) ... [2023-01-27 18:22:13,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:22:13,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:22:13,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 18:22:13,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 18:22:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:22:13,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:22:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-01-27 18:22:13,965 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:22:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:22:13,966 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:22:14,242 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:22:14,244 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:22:14,429 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:22:14,441 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:22:14,441 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:22:14,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:22:14 BoogieIcfgContainer [2023-01-27 18:22:14,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:22:14,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:22:14,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:22:14,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:22:14,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:22:13" (1/3) ... [2023-01-27 18:22:14,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cbd5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:22:14, skipping insertion in model container [2023-01-27 18:22:14,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:22:13" (2/3) ... [2023-01-27 18:22:14,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cbd5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:22:14, skipping insertion in model container [2023-01-27 18:22:14,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:22:14" (3/3) ... [2023-01-27 18:22:14,447 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2023-01-27 18:22:14,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:22:14,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-01-27 18:22:14,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:22:14,495 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 18:22:14,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 147 transitions, 310 flow [2023-01-27 18:22:14,554 INFO L130 PetriNetUnfolder]: 8/185 cut-off events. [2023-01-27 18:22:14,555 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:22:14,558 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. [2023-01-27 18:22:14,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 147 transitions, 310 flow [2023-01-27 18:22:14,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 135 transitions, 282 flow [2023-01-27 18:22:14,564 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:22:14,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 135 transitions, 282 flow [2023-01-27 18:22:14,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 135 transitions, 282 flow [2023-01-27 18:22:14,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 135 transitions, 282 flow [2023-01-27 18:22:14,594 INFO L130 PetriNetUnfolder]: 5/166 cut-off events. [2023-01-27 18:22:14,594 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 18:22:14,594 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. [2023-01-27 18:22:14,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 1780 [2023-01-27 18:22:20,870 INFO L134 LiptonReduction]: Checked pairs total: 2885 [2023-01-27 18:22:20,870 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-01-27 18:22:20,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:22:20,883 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;@67a08b68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:22:20,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 18:22:20,886 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-27 18:22:20,886 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:22:20,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:20,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-27 18:22:20,886 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)] === [2023-01-27 18:22:20,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash 484403235, now seen corresponding path program 1 times [2023-01-27 18:22:20,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:20,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924268402] [2023-01-27 18:22:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:20,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:21,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:21,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:21,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924268402] [2023-01-27 18:22:21,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924268402] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:21,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:21,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:22:21,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186732187] [2023-01-27 18:22:21,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:21,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:22:21,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:22:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:22:21,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 286 [2023-01-27 18:22:21,392 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) [2023-01-27 18:22:21,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:21,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 286 [2023-01-27 18:22:21,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:21,555 INFO L130 PetriNetUnfolder]: 242/444 cut-off events. [2023-01-27 18:22:21,555 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-27 18:22:21,556 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. [2023-01-27 18:22:21,560 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 27 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2023-01-27 18:22:21,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 144 flow [2023-01-27 18:22:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:22:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:22:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-01-27 18:22:21,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2023-01-27 18:22:21,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-01-27 18:22:21,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-01-27 18:22:21,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:21,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-01-27 18:22:21,585 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) [2023-01-27 18:22:21,589 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) [2023-01-27 18:22:21,590 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) [2023-01-27 18:22:21,591 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 64 flow. Second operand 3 states and 351 transitions. [2023-01-27 18:22:21,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 144 flow [2023-01-27 18:22:21,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:21,595 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 90 flow [2023-01-27 18:22:21,596 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} [2023-01-27 18:22:21,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-01-27 18:22:21,599 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 90 flow [2023-01-27 18:22:21,600 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) [2023-01-27 18:22:21,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:21,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-01-27 18:22:21,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:22:21,600 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)] === [2023-01-27 18:22:21,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:21,602 INFO L85 PathProgramCache]: Analyzing trace with hash 15625942, now seen corresponding path program 1 times [2023-01-27 18:22:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213732003] [2023-01-27 18:22:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:21,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:21,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:21,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213732003] [2023-01-27 18:22:21,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213732003] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:21,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:21,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:22:21,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130547293] [2023-01-27 18:22:21,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:22:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:21,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:22:21,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:22:21,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 286 [2023-01-27 18:22:21,800 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) [2023-01-27 18:22:21,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:21,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 286 [2023-01-27 18:22:21,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:21,923 INFO L130 PetriNetUnfolder]: 291/536 cut-off events. [2023-01-27 18:22:21,923 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-01-27 18:22:21,924 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. [2023-01-27 18:22:21,926 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 30 selfloop transitions, 9 changer transitions 2/41 dead transitions. [2023-01-27 18:22:21,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 41 transitions, 219 flow [2023-01-27 18:22:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:22:21,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:22:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-01-27 18:22:21,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40675990675990675 [2023-01-27 18:22:21,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-01-27 18:22:21,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-01-27 18:22:21,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:21,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-01-27 18:22:21,928 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) [2023-01-27 18:22:21,930 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) [2023-01-27 18:22:21,930 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) [2023-01-27 18:22:21,930 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 90 flow. Second operand 3 states and 349 transitions. [2023-01-27 18:22:21,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 41 transitions, 219 flow [2023-01-27 18:22:21,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:22:21,933 INFO L231 Difference]: Finished difference. Result has 31 places, 35 transitions, 155 flow [2023-01-27 18:22:21,933 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} [2023-01-27 18:22:21,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-01-27 18:22:21,933 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 35 transitions, 155 flow [2023-01-27 18:22:21,934 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) [2023-01-27 18:22:21,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:21,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:21,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:22:21,934 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)] === [2023-01-27 18:22:21,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash 957445618, now seen corresponding path program 1 times [2023-01-27 18:22:21,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:21,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376302986] [2023-01-27 18:22:21,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:21,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:21,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376302986] [2023-01-27 18:22:21,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376302986] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:21,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:21,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:22:21,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919211430] [2023-01-27 18:22:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:21,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:22:21,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:22:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:22:21,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 286 [2023-01-27 18:22:21,988 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) [2023-01-27 18:22:21,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:21,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 286 [2023-01-27 18:22:21,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:22,034 INFO L130 PetriNetUnfolder]: 72/144 cut-off events. [2023-01-27 18:22:22,035 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-01-27 18:22:22,035 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. [2023-01-27 18:22:22,035 INFO L137 encePairwiseOnDemand]: 283/286 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-01-27 18:22:22,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 132 flow [2023-01-27 18:22:22,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:22:22,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:22:22,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 409 transitions. [2023-01-27 18:22:22,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766899766899767 [2023-01-27 18:22:22,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 409 transitions. [2023-01-27 18:22:22,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 409 transitions. [2023-01-27 18:22:22,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:22,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 409 transitions. [2023-01-27 18:22:22,038 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) [2023-01-27 18:22:22,039 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) [2023-01-27 18:22:22,040 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) [2023-01-27 18:22:22,040 INFO L175 Difference]: Start difference. First operand has 31 places, 35 transitions, 155 flow. Second operand 3 states and 409 transitions. [2023-01-27 18:22:22,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 132 flow [2023-01-27 18:22:22,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 116 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-27 18:22:22,041 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 52 flow [2023-01-27 18:22:22,041 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} [2023-01-27 18:22:22,042 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2023-01-27 18:22:22,042 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 52 flow [2023-01-27 18:22:22,042 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) [2023-01-27 18:22:22,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:22,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:22,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:22:22,042 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)] === [2023-01-27 18:22:22,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash -977371176, now seen corresponding path program 1 times [2023-01-27 18:22:22,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:22,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016753329] [2023-01-27 18:22:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:22,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:22,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:22,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016753329] [2023-01-27 18:22:22,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016753329] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:22,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:22,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:22:22,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718725514] [2023-01-27 18:22:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:22,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:22:22,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:22:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:22:22,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 286 [2023-01-27 18:22:22,664 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) [2023-01-27 18:22:22,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:22,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 286 [2023-01-27 18:22:22,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:22,818 INFO L130 PetriNetUnfolder]: 94/208 cut-off events. [2023-01-27 18:22:22,818 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-01-27 18:22:22,819 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. [2023-01-27 18:22:22,820 INFO L137 encePairwiseOnDemand]: 278/286 looper letters, 32 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2023-01-27 18:22:22,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 216 flow [2023-01-27 18:22:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:22:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:22:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2023-01-27 18:22:22,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34440559440559443 [2023-01-27 18:22:22,822 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 591 transitions. [2023-01-27 18:22:22,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 591 transitions. [2023-01-27 18:22:22,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:22,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 591 transitions. [2023-01-27 18:22:22,827 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) [2023-01-27 18:22:22,829 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) [2023-01-27 18:22:22,830 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) [2023-01-27 18:22:22,830 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 52 flow. Second operand 6 states and 591 transitions. [2023-01-27 18:22:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 216 flow [2023-01-27 18:22:22,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 44 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:22:22,831 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 108 flow [2023-01-27 18:22:22,831 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} [2023-01-27 18:22:22,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 0 predicate places. [2023-01-27 18:22:22,832 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 108 flow [2023-01-27 18:22:22,832 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) [2023-01-27 18:22:22,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:22,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:22,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:22:22,834 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)] === [2023-01-27 18:22:22,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:22,834 INFO L85 PathProgramCache]: Analyzing trace with hash -315346906, now seen corresponding path program 2 times [2023-01-27 18:22:22,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:22,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759647981] [2023-01-27 18:22:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:22,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:23,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:23,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759647981] [2023-01-27 18:22:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759647981] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:23,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:23,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:22:23,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87016045] [2023-01-27 18:22:23,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:23,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:22:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:22:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:22:23,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 286 [2023-01-27 18:22:23,336 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) [2023-01-27 18:22:23,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:23,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 286 [2023-01-27 18:22:23,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:23,486 INFO L130 PetriNetUnfolder]: 95/216 cut-off events. [2023-01-27 18:22:23,486 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2023-01-27 18:22:23,487 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. [2023-01-27 18:22:23,487 INFO L137 encePairwiseOnDemand]: 279/286 looper letters, 31 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2023-01-27 18:22:23,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 42 transitions, 259 flow [2023-01-27 18:22:23,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:22:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:22:23,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2023-01-27 18:22:23,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34032634032634035 [2023-01-27 18:22:23,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 584 transitions. [2023-01-27 18:22:23,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 584 transitions. [2023-01-27 18:22:23,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:23,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 584 transitions. [2023-01-27 18:22:23,491 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) [2023-01-27 18:22:23,493 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) [2023-01-27 18:22:23,494 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) [2023-01-27 18:22:23,494 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 108 flow. Second operand 6 states and 584 transitions. [2023-01-27 18:22:23,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 42 transitions, 259 flow [2023-01-27 18:22:23,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:22:23,497 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 151 flow [2023-01-27 18:22:23,497 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} [2023-01-27 18:22:23,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-01-27 18:22:23,499 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 151 flow [2023-01-27 18:22:23,499 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) [2023-01-27 18:22:23,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:23,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:23,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:22:23,500 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)] === [2023-01-27 18:22:23,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:23,500 INFO L85 PathProgramCache]: Analyzing trace with hash -315346905, now seen corresponding path program 1 times [2023-01-27 18:22:23,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:23,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442829575] [2023-01-27 18:22:23,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:23,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:24,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:24,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442829575] [2023-01-27 18:22:24,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442829575] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:24,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:24,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 18:22:24,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071931078] [2023-01-27 18:22:24,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:24,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 18:22:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:24,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 18:22:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-01-27 18:22:24,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-27 18:22:24,678 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) [2023-01-27 18:22:24,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:24,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-27 18:22:24,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:25,367 INFO L130 PetriNetUnfolder]: 136/311 cut-off events. [2023-01-27 18:22:25,367 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2023-01-27 18:22:25,368 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. [2023-01-27 18:22:25,369 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 51 selfloop transitions, 22 changer transitions 14/87 dead transitions. [2023-01-27 18:22:25,369 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 87 transitions, 631 flow [2023-01-27 18:22:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 18:22:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 18:22:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1203 transitions. [2023-01-27 18:22:25,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3235610543302851 [2023-01-27 18:22:25,372 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1203 transitions. [2023-01-27 18:22:25,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1203 transitions. [2023-01-27 18:22:25,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:25,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1203 transitions. [2023-01-27 18:22:25,375 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) [2023-01-27 18:22:25,378 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) [2023-01-27 18:22:25,378 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) [2023-01-27 18:22:25,379 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 151 flow. Second operand 13 states and 1203 transitions. [2023-01-27 18:22:25,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 87 transitions, 631 flow [2023-01-27 18:22:25,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 87 transitions, 606 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:22:25,382 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 395 flow [2023-01-27 18:22:25,382 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} [2023-01-27 18:22:25,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2023-01-27 18:22:25,384 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 395 flow [2023-01-27 18:22:25,386 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) [2023-01-27 18:22:25,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:25,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:25,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:22:25,386 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)] === [2023-01-27 18:22:25,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 279140853, now seen corresponding path program 2 times [2023-01-27 18:22:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:25,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986649896] [2023-01-27 18:22:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:26,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:26,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986649896] [2023-01-27 18:22:26,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986649896] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:26,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:26,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 18:22:26,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329352637] [2023-01-27 18:22:26,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:26,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 18:22:26,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:26,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 18:22:26,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-27 18:22:26,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-27 18:22:26,592 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) [2023-01-27 18:22:26,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:26,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-27 18:22:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:27,408 INFO L130 PetriNetUnfolder]: 159/370 cut-off events. [2023-01-27 18:22:27,408 INFO L131 PetriNetUnfolder]: For 938/938 co-relation queries the response was YES. [2023-01-27 18:22:27,409 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. [2023-01-27 18:22:27,410 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 64 selfloop transitions, 36 changer transitions 16/116 dead transitions. [2023-01-27 18:22:27,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 1067 flow [2023-01-27 18:22:27,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 18:22:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 18:22:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1205 transitions. [2023-01-27 18:22:27,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3240989779451318 [2023-01-27 18:22:27,413 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1205 transitions. [2023-01-27 18:22:27,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1205 transitions. [2023-01-27 18:22:27,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:27,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1205 transitions. [2023-01-27 18:22:27,416 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) [2023-01-27 18:22:27,420 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) [2023-01-27 18:22:27,421 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) [2023-01-27 18:22:27,421 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 395 flow. Second operand 13 states and 1205 transitions. [2023-01-27 18:22:27,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 1067 flow [2023-01-27 18:22:27,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 966 flow, removed 45 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:27,427 INFO L231 Difference]: Finished difference. Result has 63 places, 76 transitions, 689 flow [2023-01-27 18:22:27,428 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} [2023-01-27 18:22:27,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2023-01-27 18:22:27,428 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 76 transitions, 689 flow [2023-01-27 18:22:27,429 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) [2023-01-27 18:22:27,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:27,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:27,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:22:27,429 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)] === [2023-01-27 18:22:27,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:27,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1141973469, now seen corresponding path program 3 times [2023-01-27 18:22:27,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:27,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678260890] [2023-01-27 18:22:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:27,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:28,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:28,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678260890] [2023-01-27 18:22:28,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678260890] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-01-27 18:22:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632691842] [2023-01-27 18:22:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:28,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 18:22:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 18:22:28,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-01-27 18:22:28,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-27 18:22:28,442 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) [2023-01-27 18:22:28,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:28,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-27 18:22:28,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:29,339 INFO L130 PetriNetUnfolder]: 214/486 cut-off events. [2023-01-27 18:22:29,339 INFO L131 PetriNetUnfolder]: For 1554/1554 co-relation queries the response was YES. [2023-01-27 18:22:29,341 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. [2023-01-27 18:22:29,343 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 85 selfloop transitions, 42 changer transitions 16/143 dead transitions. [2023-01-27 18:22:29,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 143 transitions, 1449 flow [2023-01-27 18:22:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-27 18:22:29,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-27 18:22:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1389 transitions. [2023-01-27 18:22:29,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3237762237762238 [2023-01-27 18:22:29,347 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1389 transitions. [2023-01-27 18:22:29,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1389 transitions. [2023-01-27 18:22:29,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:29,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1389 transitions. [2023-01-27 18:22:29,350 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) [2023-01-27 18:22:29,354 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) [2023-01-27 18:22:29,354 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) [2023-01-27 18:22:29,354 INFO L175 Difference]: Start difference. First operand has 63 places, 76 transitions, 689 flow. Second operand 15 states and 1389 transitions. [2023-01-27 18:22:29,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 143 transitions, 1449 flow [2023-01-27 18:22:29,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 1345 flow, removed 51 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:29,363 INFO L231 Difference]: Finished difference. Result has 78 places, 96 transitions, 987 flow [2023-01-27 18:22:29,363 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} [2023-01-27 18:22:29,364 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2023-01-27 18:22:29,364 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 96 transitions, 987 flow [2023-01-27 18:22:29,365 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) [2023-01-27 18:22:29,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:29,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:29,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:22:29,365 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)] === [2023-01-27 18:22:29,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1612037109, now seen corresponding path program 4 times [2023-01-27 18:22:29,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:29,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608206063] [2023-01-27 18:22:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:29,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:30,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608206063] [2023-01-27 18:22:30,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608206063] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:30,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:30,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 18:22:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225193375] [2023-01-27 18:22:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 18:22:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 18:22:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-27 18:22:30,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-27 18:22:30,534 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) [2023-01-27 18:22:30,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:30,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-27 18:22:30,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:31,242 INFO L130 PetriNetUnfolder]: 303/653 cut-off events. [2023-01-27 18:22:31,242 INFO L131 PetriNetUnfolder]: For 2475/2475 co-relation queries the response was YES. [2023-01-27 18:22:31,244 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. [2023-01-27 18:22:31,246 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 89 selfloop transitions, 62 changer transitions 15/166 dead transitions. [2023-01-27 18:22:31,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 166 transitions, 1909 flow [2023-01-27 18:22:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:22:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:22:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1113 transitions. [2023-01-27 18:22:31,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3243006993006993 [2023-01-27 18:22:31,250 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1113 transitions. [2023-01-27 18:22:31,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1113 transitions. [2023-01-27 18:22:31,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:31,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1113 transitions. [2023-01-27 18:22:31,252 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) [2023-01-27 18:22:31,255 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) [2023-01-27 18:22:31,256 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) [2023-01-27 18:22:31,256 INFO L175 Difference]: Start difference. First operand has 78 places, 96 transitions, 987 flow. Second operand 12 states and 1113 transitions. [2023-01-27 18:22:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 166 transitions, 1909 flow [2023-01-27 18:22:31,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 166 transitions, 1832 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-01-27 18:22:31,267 INFO L231 Difference]: Finished difference. Result has 86 places, 124 transitions, 1443 flow [2023-01-27 18:22:31,268 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} [2023-01-27 18:22:31,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-01-27 18:22:31,268 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 124 transitions, 1443 flow [2023-01-27 18:22:31,269 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) [2023-01-27 18:22:31,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:31,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:31,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:22:31,269 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)] === [2023-01-27 18:22:31,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:31,269 INFO L85 PathProgramCache]: Analyzing trace with hash 414718599, now seen corresponding path program 5 times [2023-01-27 18:22:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677621569] [2023-01-27 18:22:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677621569] [2023-01-27 18:22:32,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677621569] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:32,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:32,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 18:22:32,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810658576] [2023-01-27 18:22:32,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:32,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 18:22:32,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 18:22:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-27 18:22:32,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-27 18:22:32,206 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) [2023-01-27 18:22:32,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:32,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-27 18:22:32,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:33,018 INFO L130 PetriNetUnfolder]: 347/809 cut-off events. [2023-01-27 18:22:33,019 INFO L131 PetriNetUnfolder]: For 3823/3823 co-relation queries the response was YES. [2023-01-27 18:22:33,020 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. [2023-01-27 18:22:33,024 INFO L137 encePairwiseOnDemand]: 274/286 looper letters, 143 selfloop transitions, 61 changer transitions 16/220 dead transitions. [2023-01-27 18:22:33,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 220 transitions, 2706 flow [2023-01-27 18:22:33,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 18:22:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 18:22:33,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1310 transitions. [2023-01-27 18:22:33,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3271728271728272 [2023-01-27 18:22:33,027 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1310 transitions. [2023-01-27 18:22:33,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1310 transitions. [2023-01-27 18:22:33,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:33,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1310 transitions. [2023-01-27 18:22:33,030 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) [2023-01-27 18:22:33,033 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) [2023-01-27 18:22:33,034 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) [2023-01-27 18:22:33,034 INFO L175 Difference]: Start difference. First operand has 86 places, 124 transitions, 1443 flow. Second operand 14 states and 1310 transitions. [2023-01-27 18:22:33,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 220 transitions, 2706 flow [2023-01-27 18:22:33,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 220 transitions, 2627 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-01-27 18:22:33,052 INFO L231 Difference]: Finished difference. Result has 100 places, 158 transitions, 2003 flow [2023-01-27 18:22:33,053 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} [2023-01-27 18:22:33,053 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2023-01-27 18:22:33,053 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 158 transitions, 2003 flow [2023-01-27 18:22:33,054 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) [2023-01-27 18:22:33,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:33,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:33,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:22:33,054 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)] === [2023-01-27 18:22:33,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:33,054 INFO L85 PathProgramCache]: Analyzing trace with hash -866076185, now seen corresponding path program 6 times [2023-01-27 18:22:33,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:33,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185751152] [2023-01-27 18:22:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:33,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:22:34,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:22:34,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:22:34,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185751152] [2023-01-27 18:22:34,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185751152] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:22:34,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:22:34,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-01-27 18:22:34,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317308468] [2023-01-27 18:22:34,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:22:34,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-27 18:22:34,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:22:34,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-27 18:22:34,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-01-27 18:22:34,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 286 [2023-01-27 18:22:34,038 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) [2023-01-27 18:22:34,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:22:34,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 286 [2023-01-27 18:22:34,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:22:34,876 INFO L130 PetriNetUnfolder]: 344/801 cut-off events. [2023-01-27 18:22:34,877 INFO L131 PetriNetUnfolder]: For 4889/4889 co-relation queries the response was YES. [2023-01-27 18:22:34,879 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. [2023-01-27 18:22:34,882 INFO L137 encePairwiseOnDemand]: 273/286 looper letters, 134 selfloop transitions, 58 changer transitions 15/207 dead transitions. [2023-01-27 18:22:34,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 207 transitions, 2727 flow [2023-01-27 18:22:34,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-01-27 18:22:34,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-01-27 18:22:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1302 transitions. [2023-01-27 18:22:34,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32517482517482516 [2023-01-27 18:22:34,886 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1302 transitions. [2023-01-27 18:22:34,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1302 transitions. [2023-01-27 18:22:34,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:22:34,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1302 transitions. [2023-01-27 18:22:34,889 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) [2023-01-27 18:22:34,895 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) [2023-01-27 18:22:34,896 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) [2023-01-27 18:22:34,896 INFO L175 Difference]: Start difference. First operand has 100 places, 158 transitions, 2003 flow. Second operand 14 states and 1302 transitions. [2023-01-27 18:22:34,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 207 transitions, 2727 flow [2023-01-27 18:22:34,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 207 transitions, 2630 flow, removed 42 selfloop flow, removed 6 redundant places. [2023-01-27 18:22:34,914 INFO L231 Difference]: Finished difference. Result has 110 places, 163 transitions, 2144 flow [2023-01-27 18:22:34,914 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} [2023-01-27 18:22:34,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2023-01-27 18:22:34,915 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 163 transitions, 2144 flow [2023-01-27 18:22:34,915 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) [2023-01-27 18:22:34,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:22:34,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:22:34,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 18:22:34,915 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)] === [2023-01-27 18:22:34,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:22:34,916 INFO L85 PathProgramCache]: Analyzing trace with hash -627786791, now seen corresponding path program 7 times [2023-01-27 18:22:34,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:22:34,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881001412] [2023-01-27 18:22:34,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:22:34,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:22:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 18:22:34,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-27 18:22:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-27 18:22:34,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-27 18:22:34,994 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-27 18:22:34,995 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-27 18:22:34,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-01-27 18:22:34,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-01-27 18:22:34,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-27 18:22:34,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-01-27 18:22:34,996 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-01-27 18:22:34,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 18:22:34,996 INFO L445 BasicCegarLoop]: Path program histogram: [7, 2, 1, 1, 1] [2023-01-27 18:22:35,000 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:22:35,000 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:22:35,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:22:35 BasicIcfg [2023-01-27 18:22:35,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:22:35,049 INFO L158 Benchmark]: Toolchain (without parser) took 21825.34ms. Allocated memory was 411.0MB in the beginning and 859.8MB in the end (delta: 448.8MB). Free memory was 377.3MB in the beginning and 585.6MB in the end (delta: -208.3MB). Peak memory consumption was 241.8MB. Max. memory is 16.0GB. [2023-01-27 18:22:35,049 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:22:35,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.37ms. Allocated memory is still 411.0MB. Free memory was 377.3MB in the beginning and 322.0MB in the end (delta: 55.3MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-01-27 18:22:35,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.74ms. Allocated memory is still 411.0MB. Free memory was 322.0MB in the beginning and 318.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 18:22:35,050 INFO L158 Benchmark]: Boogie Preprocessor took 28.99ms. Allocated memory is still 411.0MB. Free memory was 318.7MB in the beginning and 315.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:22:35,050 INFO L158 Benchmark]: RCFGBuilder took 533.50ms. Allocated memory is still 411.0MB. Free memory was 315.9MB in the beginning and 366.5MB in the end (delta: -50.6MB). Peak memory consumption was 11.2MB. Max. memory is 16.0GB. [2023-01-27 18:22:35,050 INFO L158 Benchmark]: TraceAbstraction took 20605.10ms. Allocated memory was 411.0MB in the beginning and 859.8MB in the end (delta: 448.8MB). Free memory was 365.5MB in the beginning and 585.6MB in the end (delta: -220.1MB). Peak memory consumption was 228.6MB. Max. memory is 16.0GB. [2023-01-27 18:22:35,051 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 255.9MB. Free memory is still 213.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 593.37ms. Allocated memory is still 411.0MB. Free memory was 377.3MB in the beginning and 322.0MB in the end (delta: 55.3MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.74ms. Allocated memory is still 411.0MB. Free memory was 322.0MB in the beginning and 318.7MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.99ms. Allocated memory is still 411.0MB. Free memory was 318.7MB in the beginning and 315.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 533.50ms. Allocated memory is still 411.0MB. Free memory was 315.9MB in the beginning and 366.5MB in the end (delta: -50.6MB). Peak memory consumption was 11.2MB. Max. memory is 16.0GB. * TraceAbstraction took 20605.10ms. Allocated memory was 411.0MB in the beginning and 859.8MB in the end (delta: 448.8MB). Free memory was 365.5MB in the beginning and 585.6MB in the end (delta: -220.1MB). Peak memory consumption was 228.6MB. 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: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 357 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 357 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 2.1s 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, 3.1s 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.7s 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! [2023-01-27 18:22:35,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...