/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/pthread-wmm/safe023_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:22:51,655 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:22:51,727 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 15:22:51,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:22:51,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:22:51,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:22:51,756 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:22:51,756 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:22:51,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:22:51,759 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:22:51,759 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:22:51,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:22:51,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:22:51,761 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:22:51,761 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:22:51,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:22:51,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:22:51,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:22:51,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:22:51,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:22:51,762 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:22:51,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:22:51,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:22:51,763 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:22:51,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:22:51,763 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:22:51,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:22:51,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:22:51,764 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:22:51,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:22:51,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:22:51,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:22:51,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:22:51,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:22:51,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:22:51,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:22:52,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:22:52,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:22:52,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:22:52,162 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:22:52,163 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:22:52,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2023-08-26 15:22:53,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:22:53,459 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:22:53,459 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.i [2023-08-26 15:22:53,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc2ddbd2/a0a037039d434bd7aadda6dabeb2f384/FLAG8cded35f0 [2023-08-26 15:22:53,478 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc2ddbd2/a0a037039d434bd7aadda6dabeb2f384 [2023-08-26 15:22:53,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:22:53,480 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:22:53,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:22:53,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:22:53,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:22:53,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a3ed03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53, skipping insertion in model container [2023-08-26 15:22:53,484 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,510 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:22:53,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:22:53,749 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:22:53,769 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 15:22:53,770 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 15:22:53,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:22:53,807 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:22:53,807 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:22:53,811 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:22:53,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53 WrapperNode [2023-08-26 15:22:53,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:22:53,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:22:53,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:22:53,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:22:53,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,854 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-26 15:22:53,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:22:53,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:22:53,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:22:53,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:22:53,860 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,877 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,880 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:22:53,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:22:53,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:22:53,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:22:53,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (1/1) ... [2023-08-26 15:22:53,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:22:53,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:22:53,922 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 15:22:53,939 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 15:22:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:22:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 15:22:53,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:22:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:22:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:22:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 15:22:53,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 15:22:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 15:22:53,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 15:22:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 15:22:53,948 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 15:22:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:22:53,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 15:22:53,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:22:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:22:53,950 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 15:22:54,058 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:22:54,059 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:22:54,175 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:22:54,179 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:22:54,180 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 15:22:54,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:22:54 BoogieIcfgContainer [2023-08-26 15:22:54,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:22:54,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:22:54,183 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:22:54,185 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:22:54,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:22:53" (1/3) ... [2023-08-26 15:22:54,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2f261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:22:54, skipping insertion in model container [2023-08-26 15:22:54,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:22:53" (2/3) ... [2023-08-26 15:22:54,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cf2f261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:22:54, skipping insertion in model container [2023-08-26 15:22:54,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:22:54" (3/3) ... [2023-08-26 15:22:54,186 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_tso.i [2023-08-26 15:22:54,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:22:54,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 15:22:54,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:22:54,239 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 15:22:54,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 205 flow [2023-08-26 15:22:54,312 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-26 15:22:54,312 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:22:54,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-26 15:22:54,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 205 flow [2023-08-26 15:22:54,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 78 transitions, 165 flow [2023-08-26 15:22:54,320 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:22:54,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 78 transitions, 165 flow [2023-08-26 15:22:54,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 78 transitions, 165 flow [2023-08-26 15:22:54,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 78 transitions, 165 flow [2023-08-26 15:22:54,340 INFO L124 PetriNetUnfolderBase]: 1/78 cut-off events. [2023-08-26 15:22:54,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:22:54,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 78 events. 1/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-26 15:22:54,341 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-26 15:22:56,129 INFO L134 LiptonReduction]: Checked pairs total: 2448 [2023-08-26 15:22:56,129 INFO L136 LiptonReduction]: Total number of compositions: 73 [2023-08-26 15:22:56,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 15:22:56,143 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;@62140949, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:22:56,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-26 15:22:56,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:22:56,144 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 15:22:56,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:22:56,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:56,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 15:22:56,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:56,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 326, now seen corresponding path program 1 times [2023-08-26 15:22:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:56,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543878000] [2023-08-26 15:22:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:56,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:56,234 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 15:22:56,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:56,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543878000] [2023-08-26 15:22:56,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543878000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:56,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:56,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 15:22:56,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130703904] [2023-08-26 15:22:56,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:56,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 15:22:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:56,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 15:22:56,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 15:22:56,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 168 [2023-08-26 15:22:56,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 15:22:56,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:56,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 168 [2023-08-26 15:22:56,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:56,362 INFO L124 PetriNetUnfolderBase]: 164/293 cut-off events. [2023-08-26 15:22:56,363 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 15:22:56,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 293 events. 164/293 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1199 event pairs, 164 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 583. Up to 271 conditions per place. [2023-08-26 15:22:56,366 INFO L140 encePairwiseOnDemand]: 161/168 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-26 15:22:56,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 71 flow [2023-08-26 15:22:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 15:22:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 15:22:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 197 transitions. [2023-08-26 15:22:56,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863095238095238 [2023-08-26 15:22:56,383 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 197 transitions. [2023-08-26 15:22:56,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 197 transitions. [2023-08-26 15:22:56,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:56,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 197 transitions. [2023-08-26 15:22:56,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 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 15:22:56,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 15:22:56,397 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 15:22:56,398 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 57 flow. Second operand 2 states and 197 transitions. [2023-08-26 15:22:56,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 71 flow [2023-08-26 15:22:56,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 68 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 15:22:56,402 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2023-08-26 15:22:56,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-26 15:22:56,405 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-08-26 15:22:56,406 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2023-08-26 15:22:56,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 15:22:56,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:56,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:56,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:22:56,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:56,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2114760814, now seen corresponding path program 1 times [2023-08-26 15:22:56,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:56,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867542590] [2023-08-26 15:22:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:56,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:56,744 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 15:22:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:56,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867542590] [2023-08-26 15:22:56,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867542590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:56,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:56,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:22:56,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955716425] [2023-08-26 15:22:56,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:56,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:22:56,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:56,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:22:56,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:22:56,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 168 [2023-08-26 15:22:56,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 15:22:56,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:56,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 168 [2023-08-26 15:22:56,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:56,818 INFO L124 PetriNetUnfolderBase]: 424/734 cut-off events. [2023-08-26 15:22:56,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:22:56,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1485 conditions, 734 events. 424/734 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3636 event pairs, 160 based on Foata normal form. 43/777 useless extension candidates. Maximal degree in co-relation 1482. Up to 392 conditions per place. [2023-08-26 15:22:56,824 INFO L140 encePairwiseOnDemand]: 161/168 looper letters, 21 selfloop transitions, 6 changer transitions 0/28 dead transitions. [2023-08-26 15:22:56,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 118 flow [2023-08-26 15:22:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:22:56,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:22:56,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-08-26 15:22:56,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5198412698412699 [2023-08-26 15:22:56,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-08-26 15:22:56,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-08-26 15:22:56,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:56,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-08-26 15:22:56,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 15:22:56,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:56,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:56,833 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 262 transitions. [2023-08-26 15:22:56,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 118 flow [2023-08-26 15:22:56,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:22:56,837 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 86 flow [2023-08-26 15:22:56,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-26 15:22:56,839 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-26 15:22:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 86 flow [2023-08-26 15:22:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 15:22:56,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:56,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:22:56,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:56,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1133076877, now seen corresponding path program 1 times [2023-08-26 15:22:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:56,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011342172] [2023-08-26 15:22:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:56,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:56,926 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 15:22:56,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:56,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011342172] [2023-08-26 15:22:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011342172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:56,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:22:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568406198] [2023-08-26 15:22:56,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:56,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:22:56,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:22:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:22:56,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 168 [2023-08-26 15:22:56,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 15:22:56,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:56,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 168 [2023-08-26 15:22:56,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:56,996 INFO L124 PetriNetUnfolderBase]: 399/685 cut-off events. [2023-08-26 15:22:56,997 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-26 15:22:56,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1875 conditions, 685 events. 399/685 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3259 event pairs, 93 based on Foata normal form. 8/686 useless extension candidates. Maximal degree in co-relation 1870. Up to 279 conditions per place. [2023-08-26 15:22:57,000 INFO L140 encePairwiseOnDemand]: 161/168 looper letters, 26 selfloop transitions, 7 changer transitions 0/34 dead transitions. [2023-08-26 15:22:57,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 34 transitions, 192 flow [2023-08-26 15:22:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:22:57,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:22:57,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 343 transitions. [2023-08-26 15:22:57,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2023-08-26 15:22:57,001 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 343 transitions. [2023-08-26 15:22:57,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 343 transitions. [2023-08-26 15:22:57,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:57,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 343 transitions. [2023-08-26 15:22:57,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 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 15:22:57,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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 15:22:57,004 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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 15:22:57,004 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 86 flow. Second operand 4 states and 343 transitions. [2023-08-26 15:22:57,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 34 transitions, 192 flow [2023-08-26 15:22:57,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 15:22:57,006 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 122 flow [2023-08-26 15:22:57,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-26 15:22:57,007 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-26 15:22:57,007 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 122 flow [2023-08-26 15:22:57,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 15:22:57,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:57,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:57,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:22:57,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:57,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:57,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1133076443, now seen corresponding path program 1 times [2023-08-26 15:22:57,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:57,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26060041] [2023-08-26 15:22:57,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:57,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:57,103 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 15:22:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26060041] [2023-08-26 15:22:57,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26060041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:57,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:57,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:22:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911479262] [2023-08-26 15:22:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:57,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:22:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:57,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:22:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:22:57,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 168 [2023-08-26 15:22:57,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 15:22:57,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:57,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 168 [2023-08-26 15:22:57,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:57,171 INFO L124 PetriNetUnfolderBase]: 391/683 cut-off events. [2023-08-26 15:22:57,171 INFO L125 PetriNetUnfolderBase]: For 488/488 co-relation queries the response was YES. [2023-08-26 15:22:57,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2033 conditions, 683 events. 391/683 cut-off events. For 488/488 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3391 event pairs, 51 based on Foata normal form. 1/684 useless extension candidates. Maximal degree in co-relation 2026. Up to 361 conditions per place. [2023-08-26 15:22:57,175 INFO L140 encePairwiseOnDemand]: 161/168 looper letters, 29 selfloop transitions, 14 changer transitions 0/44 dead transitions. [2023-08-26 15:22:57,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 284 flow [2023-08-26 15:22:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:22:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:22:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2023-08-26 15:22:57,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2023-08-26 15:22:57,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 350 transitions. [2023-08-26 15:22:57,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 350 transitions. [2023-08-26 15:22:57,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:57,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 350 transitions. [2023-08-26 15:22:57,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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 15:22:57,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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 15:22:57,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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 15:22:57,179 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 122 flow. Second operand 4 states and 350 transitions. [2023-08-26 15:22:57,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 284 flow [2023-08-26 15:22:57,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 280 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:22:57,181 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 230 flow [2023-08-26 15:22:57,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=230, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-08-26 15:22:57,182 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-26 15:22:57,182 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 230 flow [2023-08-26 15:22:57,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 15:22:57,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:57,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:57,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:22:57,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:57,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash -765630092, now seen corresponding path program 1 times [2023-08-26 15:22:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:57,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249380851] [2023-08-26 15:22:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:57,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:57,257 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 15:22:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:57,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249380851] [2023-08-26 15:22:57,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249380851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:57,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:57,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:22:57,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006717306] [2023-08-26 15:22:57,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:57,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:22:57,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:57,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:22:57,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:22:57,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 168 [2023-08-26 15:22:57,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 15:22:57,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:57,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 168 [2023-08-26 15:22:57,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:57,340 INFO L124 PetriNetUnfolderBase]: 465/802 cut-off events. [2023-08-26 15:22:57,340 INFO L125 PetriNetUnfolderBase]: For 1351/1351 co-relation queries the response was YES. [2023-08-26 15:22:57,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 802 events. 465/802 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4225 event pairs, 195 based on Foata normal form. 9/807 useless extension candidates. Maximal degree in co-relation 2742. Up to 455 conditions per place. [2023-08-26 15:22:57,344 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 36 selfloop transitions, 7 changer transitions 1/45 dead transitions. [2023-08-26 15:22:57,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 381 flow [2023-08-26 15:22:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:22:57,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:22:57,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-26 15:22:57,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5456349206349206 [2023-08-26 15:22:57,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-26 15:22:57,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-26 15:22:57,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:57,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-26 15:22:57,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 15:22:57,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:57,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:57,347 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 230 flow. Second operand 3 states and 275 transitions. [2023-08-26 15:22:57,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 381 flow [2023-08-26 15:22:57,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 381 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 15:22:57,352 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 243 flow [2023-08-26 15:22:57,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-26 15:22:57,354 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-26 15:22:57,354 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 243 flow [2023-08-26 15:22:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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 15:22:57,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:57,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:57,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:22:57,355 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:57,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2072195968, now seen corresponding path program 1 times [2023-08-26 15:22:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113228644] [2023-08-26 15:22:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:57,449 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 15:22:57,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:57,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113228644] [2023-08-26 15:22:57,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113228644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:57,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:57,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 15:22:57,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361942505] [2023-08-26 15:22:57,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:57,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:22:57,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:57,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:22:57,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:22:57,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 168 [2023-08-26 15:22:57,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 15:22:57,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:57,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 168 [2023-08-26 15:22:57,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:57,510 INFO L124 PetriNetUnfolderBase]: 327/597 cut-off events. [2023-08-26 15:22:57,510 INFO L125 PetriNetUnfolderBase]: For 1534/1534 co-relation queries the response was YES. [2023-08-26 15:22:57,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2059 conditions, 597 events. 327/597 cut-off events. For 1534/1534 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3077 event pairs, 115 based on Foata normal form. 12/608 useless extension candidates. Maximal degree in co-relation 2047. Up to 359 conditions per place. [2023-08-26 15:22:57,514 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 27 selfloop transitions, 4 changer transitions 8/43 dead transitions. [2023-08-26 15:22:57,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 394 flow [2023-08-26 15:22:57,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:22:57,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:22:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-26 15:22:57,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-26 15:22:57,515 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-26 15:22:57,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-26 15:22:57,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:57,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-26 15:22:57,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 15:22:57,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:57,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:57,518 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 243 flow. Second operand 3 states and 280 transitions. [2023-08-26 15:22:57,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 394 flow [2023-08-26 15:22:57,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 380 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 15:22:57,522 INFO L231 Difference]: Finished difference. Result has 43 places, 26 transitions, 196 flow [2023-08-26 15:22:57,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=43, PETRI_TRANSITIONS=26} [2023-08-26 15:22:57,524 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-26 15:22:57,526 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 26 transitions, 196 flow [2023-08-26 15:22:57,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 15:22:57,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:57,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:22:57,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:57,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1241830939, now seen corresponding path program 1 times [2023-08-26 15:22:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:57,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813927145] [2023-08-26 15:22:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:57,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:57,656 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 15:22:57,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:57,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813927145] [2023-08-26 15:22:57,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813927145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:57,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:57,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:22:57,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213165391] [2023-08-26 15:22:57,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:57,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:22:57,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:57,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:22:57,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:22:57,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 168 [2023-08-26 15:22:57,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 26 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 15:22:57,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:57,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 168 [2023-08-26 15:22:57,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:57,746 INFO L124 PetriNetUnfolderBase]: 402/667 cut-off events. [2023-08-26 15:22:57,746 INFO L125 PetriNetUnfolderBase]: For 1940/1940 co-relation queries the response was YES. [2023-08-26 15:22:57,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2466 conditions, 667 events. 402/667 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2736 event pairs, 75 based on Foata normal form. 6/673 useless extension candidates. Maximal degree in co-relation 2453. Up to 214 conditions per place. [2023-08-26 15:22:57,748 INFO L140 encePairwiseOnDemand]: 161/168 looper letters, 37 selfloop transitions, 11 changer transitions 7/55 dead transitions. [2023-08-26 15:22:57,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 481 flow [2023-08-26 15:22:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:22:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:22:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 426 transitions. [2023-08-26 15:22:57,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2023-08-26 15:22:57,750 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 426 transitions. [2023-08-26 15:22:57,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 426 transitions. [2023-08-26 15:22:57,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:57,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 426 transitions. [2023-08-26 15:22:57,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 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 15:22:57,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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 15:22:57,752 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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 15:22:57,752 INFO L175 Difference]: Start difference. First operand has 43 places, 26 transitions, 196 flow. Second operand 5 states and 426 transitions. [2023-08-26 15:22:57,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 481 flow [2023-08-26 15:22:57,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 453 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-26 15:22:57,755 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 286 flow [2023-08-26 15:22:57,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=286, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-08-26 15:22:57,755 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-08-26 15:22:57,756 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 286 flow [2023-08-26 15:22:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 15:22:57,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:22:57,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:57,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1256185201, now seen corresponding path program 2 times [2023-08-26 15:22:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105951749] [2023-08-26 15:22:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:57,834 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 15:22:57,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:57,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105951749] [2023-08-26 15:22:57,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105951749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:57,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:57,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:22:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846317968] [2023-08-26 15:22:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:57,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:22:57,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:22:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:22:57,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 168 [2023-08-26 15:22:57,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:22:57,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:57,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 168 [2023-08-26 15:22:57,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:57,906 INFO L124 PetriNetUnfolderBase]: 352/617 cut-off events. [2023-08-26 15:22:57,906 INFO L125 PetriNetUnfolderBase]: For 2412/2412 co-relation queries the response was YES. [2023-08-26 15:22:57,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 617 events. 352/617 cut-off events. For 2412/2412 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2667 event pairs, 108 based on Foata normal form. 18/635 useless extension candidates. Maximal degree in co-relation 2359. Up to 264 conditions per place. [2023-08-26 15:22:57,908 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 24 selfloop transitions, 6 changer transitions 16/46 dead transitions. [2023-08-26 15:22:57,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 430 flow [2023-08-26 15:22:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:22:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:22:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 416 transitions. [2023-08-26 15:22:57,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2023-08-26 15:22:57,911 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 416 transitions. [2023-08-26 15:22:57,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 416 transitions. [2023-08-26 15:22:57,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:57,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 416 transitions. [2023-08-26 15:22:57,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 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 15:22:57,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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 15:22:57,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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 15:22:57,913 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 286 flow. Second operand 5 states and 416 transitions. [2023-08-26 15:22:57,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 430 flow [2023-08-26 15:22:57,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 423 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 15:22:57,917 INFO L231 Difference]: Finished difference. Result has 52 places, 21 transitions, 182 flow [2023-08-26 15:22:57,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=52, PETRI_TRANSITIONS=21} [2023-08-26 15:22:57,919 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2023-08-26 15:22:57,919 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 21 transitions, 182 flow [2023-08-26 15:22:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 15:22:57,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:57,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:57,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:22:57,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:57,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -558689985, now seen corresponding path program 1 times [2023-08-26 15:22:57,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:57,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545698839] [2023-08-26 15:22:57,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:57,996 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 15:22:57,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:57,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545698839] [2023-08-26 15:22:57,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545698839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:57,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:57,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 15:22:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103355018] [2023-08-26 15:22:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:57,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 15:22:57,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 15:22:57,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 15:22:57,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 168 [2023-08-26 15:22:57,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 21 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 15:22:57,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:57,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 168 [2023-08-26 15:22:57,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:58,025 INFO L124 PetriNetUnfolderBase]: 79/172 cut-off events. [2023-08-26 15:22:58,025 INFO L125 PetriNetUnfolderBase]: For 725/734 co-relation queries the response was YES. [2023-08-26 15:22:58,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697 conditions, 172 events. 79/172 cut-off events. For 725/734 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 636 event pairs, 20 based on Foata normal form. 8/172 useless extension candidates. Maximal degree in co-relation 680. Up to 128 conditions per place. [2023-08-26 15:22:58,026 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 21 selfloop transitions, 3 changer transitions 1/31 dead transitions. [2023-08-26 15:22:58,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 31 transitions, 295 flow [2023-08-26 15:22:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 15:22:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 15:22:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-26 15:22:58,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2023-08-26 15:22:58,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-26 15:22:58,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-26 15:22:58,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:58,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-26 15:22:58,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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 15:22:58,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:58,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 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 15:22:58,029 INFO L175 Difference]: Start difference. First operand has 52 places, 21 transitions, 182 flow. Second operand 3 states and 273 transitions. [2023-08-26 15:22:58,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 31 transitions, 295 flow [2023-08-26 15:22:58,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 31 transitions, 198 flow, removed 10 selfloop flow, removed 14 redundant places. [2023-08-26 15:22:58,030 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 128 flow [2023-08-26 15:22:58,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-08-26 15:22:58,031 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 8 predicate places. [2023-08-26 15:22:58,031 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 128 flow [2023-08-26 15:22:58,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 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 15:22:58,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:58,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:58,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:22:58,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:58,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2022040439, now seen corresponding path program 1 times [2023-08-26 15:22:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:58,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085872379] [2023-08-26 15:22:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:58,105 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 15:22:58,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:58,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085872379] [2023-08-26 15:22:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085872379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:58,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 15:22:58,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766570252] [2023-08-26 15:22:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:58,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 15:22:58,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 15:22:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 15:22:58,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 168 [2023-08-26 15:22:58,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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 15:22:58,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:58,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 168 [2023-08-26 15:22:58,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:58,155 INFO L124 PetriNetUnfolderBase]: 55/131 cut-off events. [2023-08-26 15:22:58,155 INFO L125 PetriNetUnfolderBase]: For 175/194 co-relation queries the response was YES. [2023-08-26 15:22:58,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 131 events. 55/131 cut-off events. For 175/194 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 434 event pairs, 10 based on Foata normal form. 23/147 useless extension candidates. Maximal degree in co-relation 464. Up to 57 conditions per place. [2023-08-26 15:22:58,156 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 23 selfloop transitions, 5 changer transitions 3/37 dead transitions. [2023-08-26 15:22:58,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 259 flow [2023-08-26 15:22:58,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 15:22:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 15:22:58,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-08-26 15:22:58,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372023809523809 [2023-08-26 15:22:58,157 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-08-26 15:22:58,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-08-26 15:22:58,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:58,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-08-26 15:22:58,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 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 15:22:58,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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 15:22:58,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 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 15:22:58,159 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 128 flow. Second operand 4 states and 361 transitions. [2023-08-26 15:22:58,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 259 flow [2023-08-26 15:22:58,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 15:22:58,160 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 143 flow [2023-08-26 15:22:58,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-08-26 15:22:58,161 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2023-08-26 15:22:58,161 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 143 flow [2023-08-26 15:22:58,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 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 15:22:58,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:22:58,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:58,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:22:58,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-26 15:22:58,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:22:58,162 INFO L85 PathProgramCache]: Analyzing trace with hash 763981431, now seen corresponding path program 1 times [2023-08-26 15:22:58,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:22:58,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709906020] [2023-08-26 15:22:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:22:58,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:22:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 15:22:58,226 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 15:22:58,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 15:22:58,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709906020] [2023-08-26 15:22:58,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709906020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 15:22:58,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 15:22:58,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 15:22:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795563023] [2023-08-26 15:22:58,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 15:22:58,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 15:22:58,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 15:22:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 15:22:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 15:22:58,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 168 [2023-08-26 15:22:58,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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 15:22:58,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 15:22:58,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 168 [2023-08-26 15:22:58,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 15:22:58,257 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2023-08-26 15:22:58,257 INFO L125 PetriNetUnfolderBase]: For 284/304 co-relation queries the response was YES. [2023-08-26 15:22:58,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 113 events. 48/113 cut-off events. For 284/304 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 382 event pairs, 9 based on Foata normal form. 18/124 useless extension candidates. Maximal degree in co-relation 437. Up to 46 conditions per place. [2023-08-26 15:22:58,257 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-26 15:22:58,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 246 flow [2023-08-26 15:22:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 15:22:58,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 15:22:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2023-08-26 15:22:58,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2023-08-26 15:22:58,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2023-08-26 15:22:58,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2023-08-26 15:22:58,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 15:22:58,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2023-08-26 15:22:58,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 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 15:22:58,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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 15:22:58,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 168.0) internal successors, (1008), 6 states have internal predecessors, (1008), 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 15:22:58,261 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 143 flow. Second operand 5 states and 440 transitions. [2023-08-26 15:22:58,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 246 flow [2023-08-26 15:22:58,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 225 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-26 15:22:58,262 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-26 15:22:58,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-26 15:22:58,262 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-26 15:22:58,262 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-26 15:22:58,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 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 15:22:58,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-08-26 15:22:58,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-26 15:22:58,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-26 15:22:58,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-26 15:22:58,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-26 15:22:58,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-08-26 15:22:58,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (3 of 10 remaining) [2023-08-26 15:22:58,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-26 15:22:58,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-26 15:22:58,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-08-26 15:22:58,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:22:58,265 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:22:58,267 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 15:22:58,267 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 15:22:58,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:22:58 BasicIcfg [2023-08-26 15:22:58,269 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 15:22:58,270 INFO L158 Benchmark]: Toolchain (without parser) took 4789.45ms. Allocated memory was 390.1MB in the beginning and 572.5MB in the end (delta: 182.5MB). Free memory was 364.9MB in the beginning and 328.7MB in the end (delta: 36.2MB). Peak memory consumption was 217.3MB. Max. memory is 16.0GB. [2023-08-26 15:22:58,270 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 390.1MB. Free memory was 366.9MB in the beginning and 366.8MB in the end (delta: 94.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 15:22:58,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.95ms. Allocated memory is still 390.1MB. Free memory was 364.9MB in the beginning and 344.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 15:22:58,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.88ms. Allocated memory is still 390.1MB. Free memory was 344.6MB in the beginning and 342.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:22:58,270 INFO L158 Benchmark]: Boogie Preprocessor took 26.39ms. Allocated memory is still 390.1MB. Free memory was 342.5MB in the beginning and 341.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 15:22:58,270 INFO L158 Benchmark]: RCFGBuilder took 291.44ms. Allocated memory is still 390.1MB. Free memory was 341.0MB in the beginning and 326.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 15:22:58,271 INFO L158 Benchmark]: TraceAbstraction took 4086.69ms. Allocated memory was 390.1MB in the beginning and 572.5MB in the end (delta: 182.5MB). Free memory was 325.8MB in the beginning and 328.7MB in the end (delta: -2.9MB). Peak memory consumption was 179.5MB. Max. memory is 16.0GB. [2023-08-26 15:22:58,272 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 390.1MB. Free memory was 366.9MB in the beginning and 366.8MB in the end (delta: 94.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 330.95ms. Allocated memory is still 390.1MB. Free memory was 364.9MB in the beginning and 344.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.88ms. Allocated memory is still 390.1MB. Free memory was 344.6MB in the beginning and 342.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.39ms. Allocated memory is still 390.1MB. Free memory was 342.5MB in the beginning and 341.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 291.44ms. Allocated memory is still 390.1MB. Free memory was 341.0MB in the beginning and 326.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4086.69ms. Allocated memory was 390.1MB in the beginning and 572.5MB in the end (delta: 182.5MB). Free memory was 325.8MB in the beginning and 328.7MB in the end (delta: -2.9MB). Peak memory consumption was 179.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 87 PlacesBefore, 33 PlacesAfterwards, 78 TransitionsBefore, 24 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 73 TotalNumberOfCompositions, 2448 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1308, independent: 1223, independent conditional: 0, independent unconditional: 1223, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 674, independent: 641, independent conditional: 0, independent unconditional: 641, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1308, independent: 582, independent conditional: 0, independent unconditional: 582, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 674, unknown conditional: 0, unknown unconditional: 674] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.0s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 10 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=286occurred in iteration=7, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 15:22:58,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...