/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -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/weaver/parallel-ticket-7.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 16:52:05,165 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 16:52:05,232 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 16:52:05,236 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 16:52:05,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 16:52:05,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 16:52:05,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 16:52:05,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 16:52:05,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 16:52:05,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 16:52:05,266 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 16:52:05,266 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 16:52:05,266 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 16:52:05,267 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 16:52:05,267 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 16:52:05,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 16:52:05,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 16:52:05,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 16:52:05,268 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 16:52:05,268 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 16:52:05,268 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 16:52:05,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 16:52:05,269 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 16:52:05,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 16:52:05,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 16:52:05,270 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 16:52:05,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 16:52:05,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:52:05,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 16:52:05,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 16:52:05,271 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 16:52:05,271 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 16:52:05,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 16:52:05,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 16:52:05,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 16:52:05,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 16:52:05,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 16:52:05,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 16:52:05,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 16:52:05,522 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 16:52:05,522 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 16:52:05,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-08-26 16:52:06,568 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 16:52:06,747 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 16:52:06,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-7.wvr.c [2023-08-26 16:52:06,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8cc35304/794fbc634b66408a93b09a465df67d5b/FLAG4ad6f78c0 [2023-08-26 16:52:06,764 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8cc35304/794fbc634b66408a93b09a465df67d5b [2023-08-26 16:52:06,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 16:52:06,766 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 16:52:06,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 16:52:06,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 16:52:06,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 16:52:06,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:06,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23442178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06, skipping insertion in model container [2023-08-26 16:52:06,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:06,794 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 16:52:06,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:52:06,947 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 16:52:06,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 16:52:06,989 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 16:52:06,989 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 16:52:06,994 INFO L206 MainTranslator]: Completed translation [2023-08-26 16:52:06,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06 WrapperNode [2023-08-26 16:52:06,995 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 16:52:06,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 16:52:06,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 16:52:06,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 16:52:07,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,043 INFO L138 Inliner]: procedures = 26, calls = 116, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 331 [2023-08-26 16:52:07,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 16:52:07,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 16:52:07,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 16:52:07,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 16:52:07,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,058 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,066 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,068 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 16:52:07,069 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 16:52:07,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 16:52:07,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 16:52:07,069 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (1/1) ... [2023-08-26 16:52:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 16:52:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 16:52:07,093 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 16:52:07,100 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 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 16:52:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 16:52:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 16:52:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 16:52:07,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-26 16:52:07,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-26 16:52:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-26 16:52:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread7 [2023-08-26 16:52:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread7 [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 16:52:07,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 16:52:07,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 16:52:07,118 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 16:52:07,228 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 16:52:07,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 16:52:07,601 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 16:52:07,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 16:52:07,692 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 16:52:07,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:52:07 BoogieIcfgContainer [2023-08-26 16:52:07,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 16:52:07,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 16:52:07,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 16:52:07,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 16:52:07,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 04:52:06" (1/3) ... [2023-08-26 16:52:07,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eea90d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:52:07, skipping insertion in model container [2023-08-26 16:52:07,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 04:52:06" (2/3) ... [2023-08-26 16:52:07,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eea90d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 04:52:07, skipping insertion in model container [2023-08-26 16:52:07,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 04:52:07" (3/3) ... [2023-08-26 16:52:07,701 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-7.wvr.c [2023-08-26 16:52:07,712 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 16:52:07,712 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-08-26 16:52:07,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 16:52:07,781 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 16:52:07,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 244 transitions, 544 flow [2023-08-26 16:52:07,896 INFO L124 PetriNetUnfolderBase]: 2/237 cut-off events. [2023-08-26 16:52:07,896 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 16:52:07,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 237 events. 2/237 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 178. Up to 2 conditions per place. [2023-08-26 16:52:07,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 244 transitions, 544 flow [2023-08-26 16:52:07,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 218 transitions, 478 flow [2023-08-26 16:52:07,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 16:52:07,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 218 transitions, 478 flow [2023-08-26 16:52:07,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 218 transitions, 478 flow [2023-08-26 16:52:07,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 218 transitions, 478 flow [2023-08-26 16:52:07,964 INFO L124 PetriNetUnfolderBase]: 2/218 cut-off events. [2023-08-26 16:52:07,964 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 16:52:07,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 218 events. 2/218 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 186 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 178. Up to 2 conditions per place. [2023-08-26 16:52:07,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 5386 [2023-08-26 16:52:16,935 INFO L134 LiptonReduction]: Checked pairs total: 30503 [2023-08-26 16:52:16,936 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-26 16:52:16,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 16:52:16,957 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;@2e1e1bfd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 16:52:16,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-26 16:52:16,958 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 16:52:16,958 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 16:52:16,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 16:52:16,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:52:16,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 16:52:16,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2023-08-26 16:52:16,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:52:16,963 INFO L85 PathProgramCache]: Analyzing trace with hash 944, now seen corresponding path program 1 times [2023-08-26 16:52:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:52:16,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456603963] [2023-08-26 16:52:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:52:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:52:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:52:17,047 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 16:52:17,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:52:17,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456603963] [2023-08-26 16:52:17,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456603963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:52:17,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:52:17,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 16:52:17,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360747952] [2023-08-26 16:52:17,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:52:17,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 16:52:17,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:52:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 16:52:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 16:52:17,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 429 [2023-08-26 16:52:17,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 86 transitions, 214 flow. Second operand has 2 states, 2 states have (on average 206.5) internal successors, (413), 2 states have internal predecessors, (413), 0 states have call successors, (0), 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 16:52:17,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:52:17,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 429 [2023-08-26 16:52:17,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 16:52:50,720 INFO L124 PetriNetUnfolderBase]: 513369/645736 cut-off events. [2023-08-26 16:52:50,720 INFO L125 PetriNetUnfolderBase]: For 13587/13587 co-relation queries the response was YES. [2023-08-26 16:52:52,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1284716 conditions, 645736 events. 513369/645736 cut-off events. For 13587/13587 co-relation queries the response was YES. Maximal size of possible extension queue 20246. Compared 4210989 event pairs, 513369 based on Foata normal form. 0/585859 useless extension candidates. Maximal degree in co-relation 1049868. Up to 622589 conditions per place. [2023-08-26 16:52:54,876 INFO L140 encePairwiseOnDemand]: 427/429 looper letters, 76 selfloop transitions, 0 changer transitions 0/84 dead transitions. [2023-08-26 16:52:54,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 84 transitions, 362 flow [2023-08-26 16:52:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 16:52:54,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 16:52:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 490 transitions. [2023-08-26 16:52:54,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5710955710955711 [2023-08-26 16:52:54,887 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 490 transitions. [2023-08-26 16:52:54,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 490 transitions. [2023-08-26 16:52:54,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 16:52:54,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 490 transitions. [2023-08-26 16:52:54,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 245.0) internal successors, (490), 2 states have internal predecessors, (490), 0 states have call successors, (0), 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 16:52:54,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 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 16:52:54,897 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 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 16:52:54,898 INFO L175 Difference]: Start difference. First operand has 108 places, 86 transitions, 214 flow. Second operand 2 states and 490 transitions. [2023-08-26 16:52:54,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 84 transitions, 362 flow [2023-08-26 16:52:56,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 84 transitions, 334 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-26 16:52:56,530 INFO L231 Difference]: Finished difference. Result has 93 places, 84 transitions, 182 flow [2023-08-26 16:52:56,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=93, PETRI_TRANSITIONS=84} [2023-08-26 16:52:56,533 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -15 predicate places. [2023-08-26 16:52:56,533 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 84 transitions, 182 flow [2023-08-26 16:52:56,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 206.5) internal successors, (413), 2 states have internal predecessors, (413), 0 states have call successors, (0), 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 16:52:56,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:52:56,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 16:52:56,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 16:52:56,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2023-08-26 16:52:56,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:52:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash 932200, now seen corresponding path program 1 times [2023-08-26 16:52:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:52:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877817631] [2023-08-26 16:52:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:52:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:52:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 16:52:56,986 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 16:52:56,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 16:52:56,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877817631] [2023-08-26 16:52:56,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877817631] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 16:52:56,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 16:52:56,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 16:52:56,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767354772] [2023-08-26 16:52:56,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 16:52:56,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 16:52:56,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 16:52:56,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 16:52:56,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 16:52:56,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 429 [2023-08-26 16:52:56,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 84 transitions, 182 flow. Second operand has 3 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 16:52:56,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 16:52:56,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 429 [2023-08-26 16:52:56,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand