/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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:15:44,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:15:44,154 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:15:44,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:15:44,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:15:44,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:15:44,178 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:15:44,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:15:44,179 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:15:44,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:15:44,180 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:15:44,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:15:44,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:15:44,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:15:44,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:15:44,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:15:44,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:15:44,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:15:44,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:15:44,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:15:44,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:15:44,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:15:44,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:15:44,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:15:44,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:15:44,185 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:15:44,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:15:44,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:15:44,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:15:44,187 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:15:44,187 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:15:44,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:15:44,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:15:44,188 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:15:44,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:15:44,189 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:15:44,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:15:44,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:15:44,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:15:44,499 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:15:44,499 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:15:44,501 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2023-08-26 12:15:45,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:15:45,913 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:15:45,914 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2023-08-26 12:15:45,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38a06474/6250d0710268484f95686378c4f5a4b6/FLAGedb5edfa2 [2023-08-26 12:15:45,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b38a06474/6250d0710268484f95686378c4f5a4b6 [2023-08-26 12:15:45,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:15:45,956 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:15:45,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:15:45,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:15:45,959 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:15:45,960 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:15:45" (1/1) ... [2023-08-26 12:15:45,961 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2184915f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:45, skipping insertion in model container [2023-08-26 12:15:45,961 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:15:45" (1/1) ... [2023-08-26 12:15:45,995 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:15:46,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:15:46,332 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:15:46,361 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-26 12:15:46,373 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-26 12:15:46,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:15:46,450 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:15:46,451 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:15:46,456 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:15:46,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46 WrapperNode [2023-08-26 12:15:46,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:15:46,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:15:46,460 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:15:46,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:15:46,466 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,538 INFO L138 Inliner]: procedures = 177, calls = 87, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2023-08-26 12:15:46,538 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:15:46,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:15:46,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:15:46,540 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:15:46,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,564 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,593 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:15:46,610 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:15:46,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:15:46,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:15:46,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (1/1) ... [2023-08-26 12:15:46,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:15:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:15:46,646 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) [2023-08-26 12:15:46,680 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 [2023-08-26 12:15:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 12:15:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:15:46,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 12:15:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:15:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:15:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:15:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 12:15:46,702 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 12:15:46,702 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 12:15:46,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 12:15:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 12:15:46,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 12:15:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-26 12:15:46,703 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-26 12:15:46,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:15:46,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 12:15:46,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:15:46,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:15:46,706 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:15:46,883 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:15:46,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:15:47,307 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:15:47,802 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:15:47,802 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:15:47,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:15:47 BoogieIcfgContainer [2023-08-26 12:15:47,804 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:15:47,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:15:47,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:15:47,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:15:47,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:15:45" (1/3) ... [2023-08-26 12:15:47,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f9ef45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:15:47, skipping insertion in model container [2023-08-26 12:15:47,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:15:46" (2/3) ... [2023-08-26 12:15:47,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f9ef45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:15:47, skipping insertion in model container [2023-08-26 12:15:47,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:15:47" (3/3) ... [2023-08-26 12:15:47,813 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2023-08-26 12:15:47,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:15:47,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2023-08-26 12:15:47,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:15:47,972 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:15:48,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 200 transitions, 420 flow [2023-08-26 12:15:48,108 INFO L124 PetriNetUnfolderBase]: 3/196 cut-off events. [2023-08-26 12:15:48,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:15:48,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 196 events. 3/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 307 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-08-26 12:15:48,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 200 transitions, 420 flow [2023-08-26 12:15:48,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 196 transitions, 404 flow [2023-08-26 12:15:48,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:15:48,141 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 196 transitions, 404 flow [2023-08-26 12:15:48,144 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 196 transitions, 404 flow [2023-08-26 12:15:48,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 196 transitions, 404 flow [2023-08-26 12:15:48,206 INFO L124 PetriNetUnfolderBase]: 3/196 cut-off events. [2023-08-26 12:15:48,206 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:15:48,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 196 events. 3/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 308 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-08-26 12:15:48,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 9856 [2023-08-26 12:15:55,889 INFO L134 LiptonReduction]: Checked pairs total: 58667 [2023-08-26 12:15:55,889 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-26 12:15:55,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:15:55,906 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;@6a5106ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:15:55,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 95 error locations. [2023-08-26 12:15:55,909 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:15:55,909 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 12:15:55,909 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:15:55,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:15:55,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:15:55,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:15:55,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:15:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1145, now seen corresponding path program 1 times [2023-08-26 12:15:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:15:55,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161504385] [2023-08-26 12:15:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:15:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:15:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:15:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:15:56,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:15:56,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161504385] [2023-08-26 12:15:56,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161504385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:15:56,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:15:56,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:15:56,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327676731] [2023-08-26 12:15:56,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:15:56,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:15:56,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:15:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:15:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:15:56,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 359 [2023-08-26 12:15:56,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 184 flow. Second operand has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 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) [2023-08-26 12:15:56,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:15:56,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 359 [2023-08-26 12:15:56,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:26,455 INFO L124 PetriNetUnfolderBase]: 252868/331787 cut-off events. [2023-08-26 12:16:26,455 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-08-26 12:16:27,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659994 conditions, 331787 events. 252868/331787 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 20078. Compared 2357711 event pairs, 252868 based on Foata normal form. 4800/148793 useless extension candidates. Maximal degree in co-relation 659982. Up to 326868 conditions per place. [2023-08-26 12:16:28,591 INFO L140 encePairwiseOnDemand]: 330/359 looper letters, 55 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-08-26 12:16:28,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 236 flow [2023-08-26 12:16:28,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:16:28,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:16:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 370 transitions. [2023-08-26 12:16:28,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153203342618384 [2023-08-26 12:16:28,610 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 370 transitions. [2023-08-26 12:16:28,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 370 transitions. [2023-08-26 12:16:28,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:28,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 370 transitions. [2023-08-26 12:16:28,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 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) [2023-08-26 12:16:28,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 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) [2023-08-26 12:16:28,624 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 359.0) internal successors, (1077), 3 states have internal predecessors, (1077), 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) [2023-08-26 12:16:28,626 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 184 flow. Second operand 2 states and 370 transitions. [2023-08-26 12:16:28,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 236 flow [2023-08-26 12:16:28,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 12:16:28,719 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 122 flow [2023-08-26 12:16:28,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-26 12:16:28,724 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -31 predicate places. [2023-08-26 12:16:28,724 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 122 flow [2023-08-26 12:16:28,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.5) internal successors, (287), 2 states have internal predecessors, (287), 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) [2023-08-26 12:16:28,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:28,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 12:16:28,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:16:28,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:16:28,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 35025772, now seen corresponding path program 1 times [2023-08-26 12:16:28,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:28,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508443320] [2023-08-26 12:16:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:16:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508443320] [2023-08-26 12:16:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508443320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:28,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:16:28,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876060013] [2023-08-26 12:16:28,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:28,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:16:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:16:28,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:16:28,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 359 [2023-08-26 12:16:28,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-08-26 12:16:28,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:28,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 359 [2023-08-26 12:16:28,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:46,120 INFO L124 PetriNetUnfolderBase]: 152125/205191 cut-off events. [2023-08-26 12:16:46,120 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:16:46,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409447 conditions, 205191 events. 152125/205191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10292. Compared 1469604 event pairs, 93645 based on Foata normal form. 0/118850 useless extension candidates. Maximal degree in co-relation 409444. Up to 121131 conditions per place. [2023-08-26 12:16:47,234 INFO L140 encePairwiseOnDemand]: 337/359 looper letters, 67 selfloop transitions, 11 changer transitions 0/79 dead transitions. [2023-08-26 12:16:47,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 322 flow [2023-08-26 12:16:47,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:16:47,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:16:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-26 12:16:47,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113277623026927 [2023-08-26 12:16:47,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-26 12:16:47,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-26 12:16:47,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:47,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-26 12:16:47,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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) [2023-08-26 12:16:47,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:16:47,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:16:47,243 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 122 flow. Second operand 3 states and 443 transitions. [2023-08-26 12:16:47,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 322 flow [2023-08-26 12:16:47,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 79 transitions, 322 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:16:47,246 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 216 flow [2023-08-26 12:16:47,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-26 12:16:47,248 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -29 predicate places. [2023-08-26 12:16:47,248 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 216 flow [2023-08-26 12:16:47,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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) [2023-08-26 12:16:47,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:47,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 12:16:47,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:16:47,253 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:16:47,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:47,256 INFO L85 PathProgramCache]: Analyzing trace with hash 35025773, now seen corresponding path program 1 times [2023-08-26 12:16:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:47,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525304006] [2023-08-26 12:16:47,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:47,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:16:47,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:47,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525304006] [2023-08-26 12:16:47,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525304006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:47,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:16:47,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369892249] [2023-08-26 12:16:47,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:47,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:16:47,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:16:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:16:47,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 359 [2023-08-26 12:16:47,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-08-26 12:16:47,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:47,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 359 [2023-08-26 12:16:47,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:51,791 INFO L124 PetriNetUnfolderBase]: 32733/46602 cut-off events. [2023-08-26 12:16:51,792 INFO L125 PetriNetUnfolderBase]: For 15341/15341 co-relation queries the response was YES. [2023-08-26 12:16:51,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129361 conditions, 46602 events. 32733/46602 cut-off events. For 15341/15341 co-relation queries the response was YES. Maximal size of possible extension queue 2659. Compared 314929 event pairs, 24744 based on Foata normal form. 13015/55917 useless extension candidates. Maximal degree in co-relation 129356. Up to 43807 conditions per place. [2023-08-26 12:16:52,050 INFO L140 encePairwiseOnDemand]: 347/359 looper letters, 48 selfloop transitions, 1 changer transitions 1/53 dead transitions. [2023-08-26 12:16:52,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 294 flow [2023-08-26 12:16:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:16:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:16:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-26 12:16:52,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918291550603528 [2023-08-26 12:16:52,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-26 12:16:52,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-26 12:16:52,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:52,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-26 12:16:52,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-26 12:16:52,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:16:52,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:16:52,056 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 216 flow. Second operand 3 states and 422 transitions. [2023-08-26 12:16:52,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 294 flow [2023-08-26 12:16:52,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:16:52,171 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 172 flow [2023-08-26 12:16:52,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-08-26 12:16:52,172 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -40 predicate places. [2023-08-26 12:16:52,172 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 172 flow [2023-08-26 12:16:52,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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) [2023-08-26 12:16:52,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:52,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:16:52,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:16:52,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1485042433, now seen corresponding path program 1 times [2023-08-26 12:16:52,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:52,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282915373] [2023-08-26 12:16:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:52,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:16:52,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:52,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282915373] [2023-08-26 12:16:52,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282915373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:52,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:52,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:16:52,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842847023] [2023-08-26 12:16:52,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:52,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:16:52,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:52,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:16:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:16:52,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 359 [2023-08-26 12:16:52,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2023-08-26 12:16:52,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:52,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 359 [2023-08-26 12:16:52,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:16:56,489 INFO L124 PetriNetUnfolderBase]: 31648/45765 cut-off events. [2023-08-26 12:16:56,489 INFO L125 PetriNetUnfolderBase]: For 5647/5647 co-relation queries the response was YES. [2023-08-26 12:16:56,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117338 conditions, 45765 events. 31648/45765 cut-off events. For 5647/5647 co-relation queries the response was YES. Maximal size of possible extension queue 2707. Compared 320975 event pairs, 11132 based on Foata normal form. 0/36949 useless extension candidates. Maximal degree in co-relation 117333. Up to 32657 conditions per place. [2023-08-26 12:16:56,714 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 77 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-26 12:16:56,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 83 transitions, 434 flow [2023-08-26 12:16:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:16:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:16:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-26 12:16:56,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586815227483751 [2023-08-26 12:16:56,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-26 12:16:56,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-26 12:16:56,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:16:56,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-26 12:16:56,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2023-08-26 12:16:56,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:16:56,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:16:56,720 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 172 flow. Second operand 3 states and 494 transitions. [2023-08-26 12:16:56,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 83 transitions, 434 flow [2023-08-26 12:16:56,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:16:56,723 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 184 flow [2023-08-26 12:16:56,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-26 12:16:56,724 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -39 predicate places. [2023-08-26 12:16:56,724 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 184 flow [2023-08-26 12:16:56,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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) [2023-08-26 12:16:56,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:16:56,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:16:56,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:16:56,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:16:56,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:16:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1485042843, now seen corresponding path program 1 times [2023-08-26 12:16:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:16:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349450167] [2023-08-26 12:16:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:16:56,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:16:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:16:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:16:56,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:16:56,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349450167] [2023-08-26 12:16:56,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349450167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:16:56,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:16:56,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:16:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71382929] [2023-08-26 12:16:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:16:56,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:16:56,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:16:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:16:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:16:56,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 359 [2023-08-26 12:16:56,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2023-08-26 12:16:56,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:16:56,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 359 [2023-08-26 12:16:56,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:01,463 INFO L124 PetriNetUnfolderBase]: 37201/52190 cut-off events. [2023-08-26 12:17:01,463 INFO L125 PetriNetUnfolderBase]: For 10055/10195 co-relation queries the response was YES. [2023-08-26 12:17:01,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139084 conditions, 52190 events. 37201/52190 cut-off events. For 10055/10195 co-relation queries the response was YES. Maximal size of possible extension queue 2418. Compared 337430 event pairs, 10449 based on Foata normal form. 80/43395 useless extension candidates. Maximal degree in co-relation 139078. Up to 47363 conditions per place. [2023-08-26 12:17:01,791 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 78 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-26 12:17:01,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 456 flow [2023-08-26 12:17:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:17:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:17:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 485 transitions. [2023-08-26 12:17:01,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503249767873723 [2023-08-26 12:17:01,793 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 485 transitions. [2023-08-26 12:17:01,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 485 transitions. [2023-08-26 12:17:01,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:01,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 485 transitions. [2023-08-26 12:17:01,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 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) [2023-08-26 12:17:01,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:01,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:01,798 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 184 flow. Second operand 3 states and 485 transitions. [2023-08-26 12:17:01,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 456 flow [2023-08-26 12:17:01,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 446 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:17:01,810 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 197 flow [2023-08-26 12:17:01,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-26 12:17:01,813 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -38 predicate places. [2023-08-26 12:17:01,814 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 197 flow [2023-08-26 12:17:01,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2023-08-26 12:17:01,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:01,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:01,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:17:01,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:01,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:01,815 INFO L85 PathProgramCache]: Analyzing trace with hash -703567417, now seen corresponding path program 1 times [2023-08-26 12:17:01,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:01,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359984881] [2023-08-26 12:17:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:01,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:01,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:01,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:01,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359984881] [2023-08-26 12:17:01,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359984881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:01,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:01,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:17:01,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513847923] [2023-08-26 12:17:01,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:01,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:17:01,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:01,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:17:01,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:17:01,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 359 [2023-08-26 12:17:01,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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) [2023-08-26 12:17:01,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:01,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 359 [2023-08-26 12:17:01,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:07,144 INFO L124 PetriNetUnfolderBase]: 40439/57964 cut-off events. [2023-08-26 12:17:07,144 INFO L125 PetriNetUnfolderBase]: For 11316/11316 co-relation queries the response was YES. [2023-08-26 12:17:07,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158996 conditions, 57964 events. 40439/57964 cut-off events. For 11316/11316 co-relation queries the response was YES. Maximal size of possible extension queue 2920. Compared 399612 event pairs, 19157 based on Foata normal form. 0/49068 useless extension candidates. Maximal degree in co-relation 158989. Up to 43257 conditions per place. [2023-08-26 12:17:07,549 INFO L140 encePairwiseOnDemand]: 353/359 looper letters, 68 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-26 12:17:07,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 414 flow [2023-08-26 12:17:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:17:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:17:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-26 12:17:07,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3853296193129062 [2023-08-26 12:17:07,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-26 12:17:07,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-26 12:17:07,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:07,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-26 12:17:07,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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) [2023-08-26 12:17:07,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:07,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:07,557 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 197 flow. Second operand 3 states and 415 transitions. [2023-08-26 12:17:07,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 414 flow [2023-08-26 12:17:07,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 410 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:17:07,564 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 232 flow [2023-08-26 12:17:07,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-08-26 12:17:07,568 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -37 predicate places. [2023-08-26 12:17:07,571 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 232 flow [2023-08-26 12:17:07,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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) [2023-08-26 12:17:07,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:07,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:07,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:17:07,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:07,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1208313756, now seen corresponding path program 1 times [2023-08-26 12:17:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:07,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631282721] [2023-08-26 12:17:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:07,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:07,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:07,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631282721] [2023-08-26 12:17:07,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631282721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:07,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:07,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:17:07,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113106268] [2023-08-26 12:17:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:07,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:17:07,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:17:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:17:07,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 359 [2023-08-26 12:17:07,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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) [2023-08-26 12:17:07,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:07,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 359 [2023-08-26 12:17:07,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:12,917 INFO L124 PetriNetUnfolderBase]: 38288/55573 cut-off events. [2023-08-26 12:17:12,917 INFO L125 PetriNetUnfolderBase]: For 23904/23904 co-relation queries the response was YES. [2023-08-26 12:17:13,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157882 conditions, 55573 events. 38288/55573 cut-off events. For 23904/23904 co-relation queries the response was YES. Maximal size of possible extension queue 2915. Compared 392163 event pairs, 14785 based on Foata normal form. 240/47757 useless extension candidates. Maximal degree in co-relation 157874. Up to 42018 conditions per place. [2023-08-26 12:17:13,245 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 78 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-08-26 12:17:13,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 86 transitions, 496 flow [2023-08-26 12:17:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:17:13,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:17:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-26 12:17:13,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.387883008356546 [2023-08-26 12:17:13,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-26 12:17:13,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-26 12:17:13,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:13,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-26 12:17:13,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:17:13,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 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) [2023-08-26 12:17:13,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 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) [2023-08-26 12:17:13,252 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 232 flow. Second operand 4 states and 557 transitions. [2023-08-26 12:17:13,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 86 transitions, 496 flow [2023-08-26 12:17:13,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 86 transitions, 487 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:17:13,956 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 225 flow [2023-08-26 12:17:13,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-26 12:17:13,957 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -37 predicate places. [2023-08-26 12:17:13,957 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 225 flow [2023-08-26 12:17:13,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.75) internal successors, (507), 4 states have internal predecessors, (507), 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) [2023-08-26 12:17:13,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:13,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:13,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:17:13,958 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:13,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1211146065, now seen corresponding path program 1 times [2023-08-26 12:17:13,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:13,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018503564] [2023-08-26 12:17:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:13,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:14,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:14,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:14,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018503564] [2023-08-26 12:17:14,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018503564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:14,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:14,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:17:14,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807702866] [2023-08-26 12:17:14,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:14,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:17:14,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:14,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:17:14,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:17:14,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 359 [2023-08-26 12:17:14,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-26 12:17:14,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:14,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 359 [2023-08-26 12:17:14,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:18,909 INFO L124 PetriNetUnfolderBase]: 37806/54535 cut-off events. [2023-08-26 12:17:18,909 INFO L125 PetriNetUnfolderBase]: For 27557/27672 co-relation queries the response was YES. [2023-08-26 12:17:19,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154078 conditions, 54535 events. 37806/54535 cut-off events. For 27557/27672 co-relation queries the response was YES. Maximal size of possible extension queue 2957. Compared 400723 event pairs, 8073 based on Foata normal form. 187/46539 useless extension candidates. Maximal degree in co-relation 154071. Up to 44162 conditions per place. [2023-08-26 12:17:19,225 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 92 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-08-26 12:17:19,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 99 transitions, 581 flow [2023-08-26 12:17:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:17:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:17:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-08-26 12:17:19,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596100278551532 [2023-08-26 12:17:19,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-08-26 12:17:19,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-08-26 12:17:19,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:19,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-08-26 12:17:19,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2023-08-26 12:17:19,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:19,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:19,230 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 225 flow. Second operand 3 states and 495 transitions. [2023-08-26 12:17:19,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 99 transitions, 581 flow [2023-08-26 12:17:19,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 99 transitions, 575 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:17:19,329 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 229 flow [2023-08-26 12:17:19,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-26 12:17:19,330 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -36 predicate places. [2023-08-26 12:17:19,330 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 229 flow [2023-08-26 12:17:19,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 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) [2023-08-26 12:17:19,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:19,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:19,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:17:19,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:19,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:19,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1109176611, now seen corresponding path program 1 times [2023-08-26 12:17:19,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:19,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652643751] [2023-08-26 12:17:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:19,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:19,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:19,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652643751] [2023-08-26 12:17:19,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652643751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:19,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:19,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:17:19,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654230152] [2023-08-26 12:17:19,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:19,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:17:19,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:17:19,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:17:19,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 359 [2023-08-26 12:17:19,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2023-08-26 12:17:19,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:19,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 359 [2023-08-26 12:17:19,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:24,586 INFO L124 PetriNetUnfolderBase]: 39414/56591 cut-off events. [2023-08-26 12:17:24,586 INFO L125 PetriNetUnfolderBase]: For 24853/24853 co-relation queries the response was YES. [2023-08-26 12:17:24,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168782 conditions, 56591 events. 39414/56591 cut-off events. For 24853/24853 co-relation queries the response was YES. Maximal size of possible extension queue 2911. Compared 391219 event pairs, 14965 based on Foata normal form. 36/48571 useless extension candidates. Maximal degree in co-relation 168774. Up to 45037 conditions per place. [2023-08-26 12:17:24,970 INFO L140 encePairwiseOnDemand]: 356/359 looper letters, 82 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-26 12:17:24,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 87 transitions, 514 flow [2023-08-26 12:17:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:17:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:17:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-26 12:17:24,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39275766016713093 [2023-08-26 12:17:24,972 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-26 12:17:24,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-26 12:17:24,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:24,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-26 12:17:24,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2023-08-26 12:17:24,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:24,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 359.0) internal successors, (1436), 4 states have internal predecessors, (1436), 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) [2023-08-26 12:17:24,975 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 229 flow. Second operand 3 states and 423 transitions. [2023-08-26 12:17:24,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 87 transitions, 514 flow [2023-08-26 12:17:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 87 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:17:25,062 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 236 flow [2023-08-26 12:17:25,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-08-26 12:17:25,063 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -35 predicate places. [2023-08-26 12:17:25,063 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 236 flow [2023-08-26 12:17:25,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2023-08-26 12:17:25,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:25,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:25,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:17:25,064 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:25,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:25,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1196928243, now seen corresponding path program 1 times [2023-08-26 12:17:25,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:25,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794084689] [2023-08-26 12:17:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:25,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:25,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:25,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794084689] [2023-08-26 12:17:25,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794084689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:25,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:25,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:17:25,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531785866] [2023-08-26 12:17:25,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:25,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:17:25,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:17:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:17:25,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 359 [2023-08-26 12:17:25,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 118.2) internal successors, (591), 5 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) [2023-08-26 12:17:25,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:25,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 359 [2023-08-26 12:17:25,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:29,571 INFO L124 PetriNetUnfolderBase]: 32584/46665 cut-off events. [2023-08-26 12:17:29,571 INFO L125 PetriNetUnfolderBase]: For 22126/22126 co-relation queries the response was YES. [2023-08-26 12:17:29,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139306 conditions, 46665 events. 32584/46665 cut-off events. For 22126/22126 co-relation queries the response was YES. Maximal size of possible extension queue 2430. Compared 309558 event pairs, 10302 based on Foata normal form. 64/40671 useless extension candidates. Maximal degree in co-relation 139297. Up to 20012 conditions per place. [2023-08-26 12:17:29,860 INFO L140 encePairwiseOnDemand]: 339/359 looper letters, 64 selfloop transitions, 16 changer transitions 0/82 dead transitions. [2023-08-26 12:17:29,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 82 transitions, 494 flow [2023-08-26 12:17:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:17:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:17:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 535 transitions. [2023-08-26 12:17:29,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3725626740947075 [2023-08-26 12:17:29,862 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 535 transitions. [2023-08-26 12:17:29,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 535 transitions. [2023-08-26 12:17:29,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:29,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 535 transitions. [2023-08-26 12:17:29,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 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) [2023-08-26 12:17:29,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 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) [2023-08-26 12:17:29,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 359.0) internal successors, (1795), 5 states have internal predecessors, (1795), 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) [2023-08-26 12:17:29,867 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 236 flow. Second operand 4 states and 535 transitions. [2023-08-26 12:17:29,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 82 transitions, 494 flow [2023-08-26 12:17:29,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:17:29,951 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 349 flow [2023-08-26 12:17:29,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=349, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-08-26 12:17:29,951 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -32 predicate places. [2023-08-26 12:17:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 349 flow [2023-08-26 12:17:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.2) internal successors, (591), 5 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) [2023-08-26 12:17:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:29,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:29,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:17:29,952 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:29,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash -821512600, now seen corresponding path program 1 times [2023-08-26 12:17:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901347960] [2023-08-26 12:17:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:30,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901347960] [2023-08-26 12:17:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901347960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:30,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:30,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:17:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168724030] [2023-08-26 12:17:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:17:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:17:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:17:30,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 359 [2023-08-26 12:17:30,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 349 flow. Second operand has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 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) [2023-08-26 12:17:30,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:30,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 359 [2023-08-26 12:17:30,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:38,196 INFO L124 PetriNetUnfolderBase]: 55486/79136 cut-off events. [2023-08-26 12:17:38,196 INFO L125 PetriNetUnfolderBase]: For 102014/102602 co-relation queries the response was YES. [2023-08-26 12:17:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277615 conditions, 79136 events. 55486/79136 cut-off events. For 102014/102602 co-relation queries the response was YES. Maximal size of possible extension queue 3960. Compared 568453 event pairs, 11180 based on Foata normal form. 396/76386 useless extension candidates. Maximal degree in co-relation 277605. Up to 36983 conditions per place. [2023-08-26 12:17:38,698 INFO L140 encePairwiseOnDemand]: 352/359 looper letters, 183 selfloop transitions, 12 changer transitions 0/198 dead transitions. [2023-08-26 12:17:38,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 198 transitions, 1486 flow [2023-08-26 12:17:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:17:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:17:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 944 transitions. [2023-08-26 12:17:38,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382544103992572 [2023-08-26 12:17:38,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 944 transitions. [2023-08-26 12:17:38,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 944 transitions. [2023-08-26 12:17:38,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:38,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 944 transitions. [2023-08-26 12:17:38,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 157.33333333333334) internal successors, (944), 6 states have internal predecessors, (944), 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) [2023-08-26 12:17:38,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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) [2023-08-26 12:17:38,706 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 359.0) internal successors, (2513), 7 states have internal predecessors, (2513), 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) [2023-08-26 12:17:38,706 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 349 flow. Second operand 6 states and 944 transitions. [2023-08-26 12:17:38,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 198 transitions, 1486 flow [2023-08-26 12:17:39,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 198 transitions, 1479 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:17:39,072 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 465 flow [2023-08-26 12:17:39,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=465, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2023-08-26 12:17:39,073 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -26 predicate places. [2023-08-26 12:17:39,073 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 465 flow [2023-08-26 12:17:39,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.4) internal successors, (692), 5 states have internal predecessors, (692), 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) [2023-08-26 12:17:39,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:39,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:39,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 12:17:39,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:39,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:39,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1548088746, now seen corresponding path program 2 times [2023-08-26 12:17:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:39,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865930431] [2023-08-26 12:17:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:39,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865930431] [2023-08-26 12:17:39,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865930431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:39,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:39,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:17:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961906134] [2023-08-26 12:17:39,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:39,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:17:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:17:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:17:39,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 359 [2023-08-26 12:17:39,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 465 flow. Second operand has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 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) [2023-08-26 12:17:39,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:39,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 359 [2023-08-26 12:17:39,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:17:55,600 INFO L124 PetriNetUnfolderBase]: 104665/150554 cut-off events. [2023-08-26 12:17:55,600 INFO L125 PetriNetUnfolderBase]: For 207125/207787 co-relation queries the response was YES. [2023-08-26 12:17:56,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536188 conditions, 150554 events. 104665/150554 cut-off events. For 207125/207787 co-relation queries the response was YES. Maximal size of possible extension queue 8284. Compared 1190851 event pairs, 31568 based on Foata normal form. 740/145837 useless extension candidates. Maximal degree in co-relation 536175. Up to 62670 conditions per place. [2023-08-26 12:17:56,660 INFO L140 encePairwiseOnDemand]: 355/359 looper letters, 182 selfloop transitions, 5 changer transitions 0/190 dead transitions. [2023-08-26 12:17:56,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 190 transitions, 1495 flow [2023-08-26 12:17:56,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:17:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:17:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 811 transitions. [2023-08-26 12:17:56,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45181058495821724 [2023-08-26 12:17:56,662 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 811 transitions. [2023-08-26 12:17:56,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 811 transitions. [2023-08-26 12:17:56,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:17:56,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 811 transitions. [2023-08-26 12:17:56,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 162.2) internal successors, (811), 5 states have internal predecessors, (811), 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) [2023-08-26 12:17:56,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 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) [2023-08-26 12:17:56,666 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 359.0) internal successors, (2154), 6 states have internal predecessors, (2154), 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) [2023-08-26 12:17:56,667 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 465 flow. Second operand 5 states and 811 transitions. [2023-08-26 12:17:56,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 190 transitions, 1495 flow [2023-08-26 12:17:57,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 190 transitions, 1491 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:17:57,522 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 496 flow [2023-08-26 12:17:57,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2023-08-26 12:17:57,522 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -20 predicate places. [2023-08-26 12:17:57,522 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 496 flow [2023-08-26 12:17:57,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 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) [2023-08-26 12:17:57,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:17:57,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:17:57,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 12:17:57,523 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONASSERT === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:17:57,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:17:57,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1812933575, now seen corresponding path program 1 times [2023-08-26 12:17:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:17:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264361941] [2023-08-26 12:17:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:17:57,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:17:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:17:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:17:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:17:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264361941] [2023-08-26 12:17:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264361941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:17:58,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:17:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-26 12:17:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7548905] [2023-08-26 12:17:58,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:17:58,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 12:17:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:17:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 12:17:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-26 12:17:58,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 359 [2023-08-26 12:17:58,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 496 flow. Second operand has 10 states, 10 states have (on average 105.7) internal successors, (1057), 10 states have internal predecessors, (1057), 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) [2023-08-26 12:17:58,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:17:58,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 359 [2023-08-26 12:17:58,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:18:15,051 INFO L124 PetriNetUnfolderBase]: 98234/141811 cut-off events. [2023-08-26 12:18:15,051 INFO L125 PetriNetUnfolderBase]: For 199998/200357 co-relation queries the response was YES. [2023-08-26 12:18:15,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519910 conditions, 141811 events. 98234/141811 cut-off events. For 199998/200357 co-relation queries the response was YES. Maximal size of possible extension queue 8374. Compared 1121951 event pairs, 50684 based on Foata normal form. 202/136794 useless extension candidates. Maximal degree in co-relation 519893. Up to 112242 conditions per place. [2023-08-26 12:18:16,335 INFO L140 encePairwiseOnDemand]: 347/359 looper letters, 179 selfloop transitions, 40 changer transitions 0/221 dead transitions. [2023-08-26 12:18:16,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 221 transitions, 1832 flow [2023-08-26 12:18:16,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 12:18:16,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 12:18:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1286 transitions. [2023-08-26 12:18:16,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3256520638136237 [2023-08-26 12:18:16,358 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1286 transitions. [2023-08-26 12:18:16,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1286 transitions. [2023-08-26 12:18:16,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:18:16,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1286 transitions. [2023-08-26 12:18:16,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.9090909090909) internal successors, (1286), 11 states have internal predecessors, (1286), 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) [2023-08-26 12:18:16,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 359.0) internal successors, (4308), 12 states have internal predecessors, (4308), 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) [2023-08-26 12:18:16,367 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 359.0) internal successors, (4308), 12 states have internal predecessors, (4308), 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) [2023-08-26 12:18:16,367 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 496 flow. Second operand 11 states and 1286 transitions. [2023-08-26 12:18:16,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 221 transitions, 1832 flow [2023-08-26 12:18:18,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 221 transitions, 1810 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-26 12:18:18,562 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 964 flow [2023-08-26 12:18:18,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=359, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=964, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2023-08-26 12:18:18,564 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -5 predicate places. [2023-08-26 12:18:18,564 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 964 flow [2023-08-26 12:18:18,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.7) internal successors, (1057), 10 states have internal predecessors, (1057), 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) [2023-08-26 12:18:18,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:18:18,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:18:18,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 12:18:18,565 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 92 more)] === [2023-08-26 12:18:18,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:18:18,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1549935546, now seen corresponding path program 1 times [2023-08-26 12:18:18,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:18:18,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440531976] [2023-08-26 12:18:18,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:18:18,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:18:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:18:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:18:18,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:18:18,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440531976] [2023-08-26 12:18:18,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440531976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:18:18,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:18:18,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 12:18:18,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76908823] [2023-08-26 12:18:18,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:18:18,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 12:18:18,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:18:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 12:18:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-26 12:18:18,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 359 [2023-08-26 12:18:18,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 964 flow. Second operand has 7 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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) [2023-08-26 12:18:18,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:18:18,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 359 [2023-08-26 12:18:18,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand