/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 12:13:16,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 12:13:16,755 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 12:13:16,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 12:13:16,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 12:13:16,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 12:13:16,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 12:13:16,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 12:13:16,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 12:13:16,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 12:13:16,798 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 12:13:16,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 12:13:16,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 12:13:16,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 12:13:16,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 12:13:16,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 12:13:16,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 12:13:16,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 12:13:16,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 12:13:16,801 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 12:13:16,801 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 12:13:16,803 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 12:13:16,803 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 12:13:16,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 12:13:16,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 12:13:16,804 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 12:13:16,804 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 12:13:16,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:13:16,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 12:13:16,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 12:13:16,806 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 12:13:16,806 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 12:13:16,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 12:13:16,806 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 12:13:16,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 12:13:16,807 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 12:13:17,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 12:13:17,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 12:13:17,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 12:13:17,142 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 12:13:17,145 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 12:13:17,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 12:13:18,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 12:13:18,631 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 12:13:18,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 12:13:18,653 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af63915/f84b3338b34e4a82b281dde28e76641b/FLAG3058217a6 [2023-08-26 12:13:18,667 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01af63915/f84b3338b34e4a82b281dde28e76641b [2023-08-26 12:13:18,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 12:13:18,671 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 12:13:18,671 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 12:13:18,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 12:13:18,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 12:13:18,674 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:13:18" (1/1) ... [2023-08-26 12:13:18,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588c9b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:18, skipping insertion in model container [2023-08-26 12:13:18,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 12:13:18" (1/1) ... [2023-08-26 12:13:18,714 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 12:13:19,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:13:19,075 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 12:13:19,107 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:13:19,108 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 12:13:19,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 12:13:19,170 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:13:19,170 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 12:13:19,176 INFO L206 MainTranslator]: Completed translation [2023-08-26 12:13:19,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19 WrapperNode [2023-08-26 12:13:19,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 12:13:19,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 12:13:19,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 12:13:19,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 12:13:19,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,211 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,236 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-08-26 12:13:19,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 12:13:19,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 12:13:19,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 12:13:19,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 12:13:19,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,264 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,264 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 12:13:19,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 12:13:19,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 12:13:19,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 12:13:19,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (1/1) ... [2023-08-26 12:13:19,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 12:13:19,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 12:13:19,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 12:13:19,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 12:13:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 12:13:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 12:13:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 12:13:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 12:13:19,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 12:13:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 12:13:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 12:13:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 12:13:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 12:13:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 12:13:19,343 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 12:13:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 12:13:19,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 12:13:19,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 12:13:19,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 12:13:19,345 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 12:13:19,454 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 12:13:19,456 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 12:13:19,597 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 12:13:19,606 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 12:13:19,606 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 12:13:19,608 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:13:19 BoogieIcfgContainer [2023-08-26 12:13:19,609 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 12:13:19,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 12:13:19,611 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 12:13:19,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 12:13:19,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 12:13:18" (1/3) ... [2023-08-26 12:13:19,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b459b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:13:19, skipping insertion in model container [2023-08-26 12:13:19,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 12:13:19" (2/3) ... [2023-08-26 12:13:19,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b459b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 12:13:19, skipping insertion in model container [2023-08-26 12:13:19,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 12:13:19" (3/3) ... [2023-08-26 12:13:19,618 INFO L112 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 12:13:19,634 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 12:13:19,635 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 12:13:19,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 12:13:19,714 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 12:13:19,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 12:13:19,786 INFO L124 PetriNetUnfolderBase]: 3/91 cut-off events. [2023-08-26 12:13:19,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:13:19,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-08-26 12:13:19,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 94 transitions, 203 flow [2023-08-26 12:13:19,832 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 77 transitions, 163 flow [2023-08-26 12:13:19,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 12:13:19,842 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 77 transitions, 163 flow [2023-08-26 12:13:19,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 77 transitions, 163 flow [2023-08-26 12:13:19,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 77 transitions, 163 flow [2023-08-26 12:13:19,871 INFO L124 PetriNetUnfolderBase]: 1/77 cut-off events. [2023-08-26 12:13:19,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:13:19,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 1/77 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. 0/70 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-26 12:13:19,875 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-26 12:13:22,065 INFO L134 LiptonReduction]: Checked pairs total: 2218 [2023-08-26 12:13:22,065 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-26 12:13:22,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 12:13:22,083 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;@8dad325, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 12:13:22,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-26 12:13:22,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 12:13:22,085 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 12:13:22,085 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:13:22,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:22,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 12:13:22,086 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 12:13:22,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:22,090 INFO L85 PathProgramCache]: Analyzing trace with hash 321, now seen corresponding path program 1 times [2023-08-26 12:13:22,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:22,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896614269] [2023-08-26 12:13:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:22,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:22,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896614269] [2023-08-26 12:13:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896614269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:22,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 12:13:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837797263] [2023-08-26 12:13:22,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:22,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 12:13:22,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 12:13:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 12:13:22,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 163 [2023-08-26 12:13:22,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 55 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:22,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 163 [2023-08-26 12:13:22,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:22,339 INFO L124 PetriNetUnfolderBase]: 164/284 cut-off events. [2023-08-26 12:13:22,339 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 12:13:22,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 284 events. 164/284 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1126 event pairs, 164 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 574. Up to 271 conditions per place. [2023-08-26 12:13:22,343 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 14 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-26 12:13:22,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 71 flow [2023-08-26 12:13:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 12:13:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 12:13:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 194 transitions. [2023-08-26 12:13:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5950920245398773 [2023-08-26 12:13:22,359 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 194 transitions. [2023-08-26 12:13:22,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 194 transitions. [2023-08-26 12:13:22,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:22,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 194 transitions. [2023-08-26 12:13:22,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 97.0) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,375 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,377 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 55 flow. Second operand 2 states and 194 transitions. [2023-08-26 12:13:22,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 71 flow [2023-08-26 12:13:22,380 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 12:13:22,381 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2023-08-26 12:13:22,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, 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 12:13:22,386 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-08-26 12:13:22,386 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2023-08-26 12:13:22,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:22,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:22,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 12:13:22,387 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 12:13:22,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1836054408, now seen corresponding path program 1 times [2023-08-26 12:13:22,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:22,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928546541] [2023-08-26 12:13:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:22,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:22,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:22,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928546541] [2023-08-26 12:13:22,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928546541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:22,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:22,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 12:13:22,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853639545] [2023-08-26 12:13:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:22,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 12:13:22,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 12:13:22,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 12:13:22,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2023-08-26 12:13:22,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:22,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2023-08-26 12:13:22,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:22,930 INFO L124 PetriNetUnfolderBase]: 562/908 cut-off events. [2023-08-26 12:13:22,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 12:13:22,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 908 events. 562/908 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3981 event pairs, 238 based on Foata normal form. 53/961 useless extension candidates. Maximal degree in co-relation 1868. Up to 464 conditions per place. [2023-08-26 12:13:22,940 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-08-26 12:13:22,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 31 transitions, 134 flow [2023-08-26 12:13:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 12:13:22,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 12:13:22,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-26 12:13:22,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316973415132924 [2023-08-26 12:13:22,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-26 12:13:22,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-26 12:13:22,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:22,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-26 12:13:22,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 12:13:22,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 163.0) internal successors, (652), 4 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,950 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 260 transitions. [2023-08-26 12:13:22,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 31 transitions, 134 flow [2023-08-26 12:13:22,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:13:22,952 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 94 flow [2023-08-26 12:13:22,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, 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=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-08-26 12:13:22,955 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-26 12:13:22,955 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 94 flow [2023-08-26 12:13:22,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:22,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:22,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:22,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 12:13:22,961 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 12:13:22,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1083112598, now seen corresponding path program 1 times [2023-08-26 12:13:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:22,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635947293] [2023-08-26 12:13:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:23,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:23,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635947293] [2023-08-26 12:13:23,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635947293] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:23,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:23,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:13:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192691305] [2023-08-26 12:13:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:23,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:13:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:13:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:13:23,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2023-08-26 12:13:23,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:23,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2023-08-26 12:13:23,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:23,285 INFO L124 PetriNetUnfolderBase]: 526/853 cut-off events. [2023-08-26 12:13:23,286 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2023-08-26 12:13:23,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 853 events. 526/853 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3520 event pairs, 110 based on Foata normal form. 10/863 useless extension candidates. Maximal degree in co-relation 2443. Up to 345 conditions per place. [2023-08-26 12:13:23,293 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-08-26 12:13:23,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 224 flow [2023-08-26 12:13:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:13:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:13:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-08-26 12:13:23,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184049079754601 [2023-08-26 12:13:23,295 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-08-26 12:13:23,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-08-26 12:13:23,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:23,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-08-26 12:13:23,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,299 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,299 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 94 flow. Second operand 4 states and 338 transitions. [2023-08-26 12:13:23,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 224 flow [2023-08-26 12:13:23,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 38 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 12:13:23,305 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 138 flow [2023-08-26 12:13:23,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-26 12:13:23,306 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-26 12:13:23,306 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 138 flow [2023-08-26 12:13:23,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:23,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:23,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 12:13:23,310 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 12:13:23,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:23,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1083112629, now seen corresponding path program 1 times [2023-08-26 12:13:23,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:23,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619822240] [2023-08-26 12:13:23,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:23,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:23,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:23,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619822240] [2023-08-26 12:13:23,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619822240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:23,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:23,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:13:23,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847748782] [2023-08-26 12:13:23,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:23,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:13:23,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:23,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:13:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:13:23,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2023-08-26 12:13:23,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:23,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2023-08-26 12:13:23,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:23,584 INFO L124 PetriNetUnfolderBase]: 493/802 cut-off events. [2023-08-26 12:13:23,584 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2023-08-26 12:13:23,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 802 events. 493/802 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3325 event pairs, 59 based on Foata normal form. 6/808 useless extension candidates. Maximal degree in co-relation 2521. Up to 355 conditions per place. [2023-08-26 12:13:23,589 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 36 selfloop transitions, 12 changer transitions 0/48 dead transitions. [2023-08-26 12:13:23,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 324 flow [2023-08-26 12:13:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:13:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:13:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-08-26 12:13:23,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245398773006135 [2023-08-26 12:13:23,591 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-08-26 12:13:23,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-08-26 12:13:23,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:23,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-08-26 12:13:23,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,594 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,594 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 138 flow. Second operand 4 states and 342 transitions. [2023-08-26 12:13:23,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 324 flow [2023-08-26 12:13:23,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 48 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:13:23,599 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 240 flow [2023-08-26 12:13:23,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-26 12:13:23,600 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-26 12:13:23,601 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 240 flow [2023-08-26 12:13:23,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:23,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:23,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 12:13:23,602 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 12:13:23,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:23,602 INFO L85 PathProgramCache]: Analyzing trace with hash 783235469, now seen corresponding path program 1 times [2023-08-26 12:13:23,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:23,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674275056] [2023-08-26 12:13:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:23,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:23,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:23,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674275056] [2023-08-26 12:13:23,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674275056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:23,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:23,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:13:23,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878339815] [2023-08-26 12:13:23,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:23,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:13:23,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:13:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:13:23,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2023-08-26 12:13:23,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:23,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2023-08-26 12:13:23,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:23,821 INFO L124 PetriNetUnfolderBase]: 464/757 cut-off events. [2023-08-26 12:13:23,821 INFO L125 PetriNetUnfolderBase]: For 1108/1108 co-relation queries the response was YES. [2023-08-26 12:13:23,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 757 events. 464/757 cut-off events. For 1108/1108 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3187 event pairs, 88 based on Foata normal form. 6/763 useless extension candidates. Maximal degree in co-relation 2800. Up to 328 conditions per place. [2023-08-26 12:13:23,827 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 37 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2023-08-26 12:13:23,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 458 flow [2023-08-26 12:13:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:13:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:13:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-08-26 12:13:23,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276073619631901 [2023-08-26 12:13:23,829 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-08-26 12:13:23,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-08-26 12:13:23,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:23,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-08-26 12:13:23,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 12:13:23,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,832 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,832 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 240 flow. Second operand 4 states and 344 transitions. [2023-08-26 12:13:23,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 458 flow [2023-08-26 12:13:23,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 454 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:13:23,840 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 377 flow [2023-08-26 12:13:23,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=377, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-26 12:13:23,842 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 10 predicate places. [2023-08-26 12:13:23,842 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 377 flow [2023-08-26 12:13:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:23,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:23,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 12:13:23,844 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 12:13:23,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1489548311, now seen corresponding path program 1 times [2023-08-26 12:13:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136673829] [2023-08-26 12:13:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:23,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:23,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136673829] [2023-08-26 12:13:23,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136673829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:23,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:23,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:13:23,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277233556] [2023-08-26 12:13:23,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:23,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:13:23,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:13:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:13:23,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2023-08-26 12:13:23,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:23,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:23,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2023-08-26 12:13:23,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:24,090 INFO L124 PetriNetUnfolderBase]: 455/742 cut-off events. [2023-08-26 12:13:24,091 INFO L125 PetriNetUnfolderBase]: For 2269/2269 co-relation queries the response was YES. [2023-08-26 12:13:24,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 742 events. 455/742 cut-off events. For 2269/2269 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3013 event pairs, 63 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 3195. Up to 372 conditions per place. [2023-08-26 12:13:24,097 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 38 selfloop transitions, 28 changer transitions 0/66 dead transitions. [2023-08-26 12:13:24,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 66 transitions, 708 flow [2023-08-26 12:13:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 12:13:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 12:13:24,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2023-08-26 12:13:24,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322085889570553 [2023-08-26 12:13:24,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2023-08-26 12:13:24,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2023-08-26 12:13:24,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:24,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2023-08-26 12:13:24,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,102 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 163.0) internal successors, (815), 5 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,102 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 377 flow. Second operand 4 states and 347 transitions. [2023-08-26 12:13:24,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 66 transitions, 708 flow [2023-08-26 12:13:24,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 697 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:13:24,109 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 633 flow [2023-08-26 12:13:24,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=633, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-08-26 12:13:24,112 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-26 12:13:24,112 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 633 flow [2023-08-26 12:13:24,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:24,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:24,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 12:13:24,113 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 12:13:24,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:24,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1080693687, now seen corresponding path program 1 times [2023-08-26 12:13:24,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050174649] [2023-08-26 12:13:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:24,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:24,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:24,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050174649] [2023-08-26 12:13:24,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050174649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:24,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:24,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 12:13:24,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132753183] [2023-08-26 12:13:24,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:24,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 12:13:24,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 12:13:24,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 12:13:24,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 163 [2023-08-26 12:13:24,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 633 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:24,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 163 [2023-08-26 12:13:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:24,350 INFO L124 PetriNetUnfolderBase]: 310/586 cut-off events. [2023-08-26 12:13:24,350 INFO L125 PetriNetUnfolderBase]: For 3881/3950 co-relation queries the response was YES. [2023-08-26 12:13:24,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2616 conditions, 586 events. 310/586 cut-off events. For 3881/3950 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3057 event pairs, 44 based on Foata normal form. 69/647 useless extension candidates. Maximal degree in co-relation 2600. Up to 296 conditions per place. [2023-08-26 12:13:24,356 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 73 selfloop transitions, 8 changer transitions 2/103 dead transitions. [2023-08-26 12:13:24,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 103 transitions, 1415 flow [2023-08-26 12:13:24,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:13:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:13:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2023-08-26 12:13:24,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5386503067484663 [2023-08-26 12:13:24,358 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2023-08-26 12:13:24,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2023-08-26 12:13:24,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:24,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2023-08-26 12:13:24,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,363 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 633 flow. Second operand 5 states and 439 transitions. [2023-08-26 12:13:24,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 103 transitions, 1415 flow [2023-08-26 12:13:24,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 103 transitions, 1415 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 12:13:24,371 INFO L231 Difference]: Finished difference. Result has 55 places, 56 transitions, 693 flow [2023-08-26 12:13:24,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=693, PETRI_PLACES=55, PETRI_TRANSITIONS=56} [2023-08-26 12:13:24,372 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2023-08-26 12:13:24,372 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 56 transitions, 693 flow [2023-08-26 12:13:24,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:24,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:24,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 12:13:24,373 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 12:13:24,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:24,373 INFO L85 PathProgramCache]: Analyzing trace with hash 140446012, now seen corresponding path program 1 times [2023-08-26 12:13:24,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:24,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12772060] [2023-08-26 12:13:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:24,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:24,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:24,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12772060] [2023-08-26 12:13:24,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12772060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:24,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:24,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:13:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968285073] [2023-08-26 12:13:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:24,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:13:24,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:13:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:13:24,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 163 [2023-08-26 12:13:24,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 56 transitions, 693 flow. Second operand has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:24,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 163 [2023-08-26 12:13:24,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:24,665 INFO L124 PetriNetUnfolderBase]: 288/564 cut-off events. [2023-08-26 12:13:24,665 INFO L125 PetriNetUnfolderBase]: For 4175/4358 co-relation queries the response was YES. [2023-08-26 12:13:24,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 564 events. 288/564 cut-off events. For 4175/4358 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3031 event pairs, 15 based on Foata normal form. 143/699 useless extension candidates. Maximal degree in co-relation 3020. Up to 248 conditions per place. [2023-08-26 12:13:24,670 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 79 selfloop transitions, 15 changer transitions 8/122 dead transitions. [2023-08-26 12:13:24,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 1681 flow [2023-08-26 12:13:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 12:13:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 12:13:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 614 transitions. [2023-08-26 12:13:24,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381244522348817 [2023-08-26 12:13:24,672 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 614 transitions. [2023-08-26 12:13:24,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 614 transitions. [2023-08-26 12:13:24,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:24,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 614 transitions. [2023-08-26 12:13:24,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,676 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,676 INFO L175 Difference]: Start difference. First operand has 55 places, 56 transitions, 693 flow. Second operand 7 states and 614 transitions. [2023-08-26 12:13:24,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 1681 flow [2023-08-26 12:13:24,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 122 transitions, 1677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 12:13:24,686 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 788 flow [2023-08-26 12:13:24,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=788, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2023-08-26 12:13:24,688 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 30 predicate places. [2023-08-26 12:13:24,688 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 788 flow [2023-08-26 12:13:24,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:24,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:24,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 12:13:24,688 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 12:13:24,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1823098986, now seen corresponding path program 1 times [2023-08-26 12:13:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558918024] [2023-08-26 12:13:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:24,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:24,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:24,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558918024] [2023-08-26 12:13:24,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558918024] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:24,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:24,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 12:13:24,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74881873] [2023-08-26 12:13:24,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:24,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:13:24,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:24,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:13:24,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:13:24,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2023-08-26 12:13:24,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 788 flow. Second operand has 5 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:24,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2023-08-26 12:13:24,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:24,958 INFO L124 PetriNetUnfolderBase]: 620/1119 cut-off events. [2023-08-26 12:13:24,958 INFO L125 PetriNetUnfolderBase]: For 9351/9351 co-relation queries the response was YES. [2023-08-26 12:13:24,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7206 conditions, 1119 events. 620/1119 cut-off events. For 9351/9351 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6025 event pairs, 56 based on Foata normal form. 7/1126 useless extension candidates. Maximal degree in co-relation 7183. Up to 571 conditions per place. [2023-08-26 12:13:24,966 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 48 selfloop transitions, 16 changer transitions 65/129 dead transitions. [2023-08-26 12:13:24,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 129 transitions, 1655 flow [2023-08-26 12:13:24,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 12:13:24,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 12:13:24,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-26 12:13:24,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190184049079755 [2023-08-26 12:13:24,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-26 12:13:24,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-26 12:13:24,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:24,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-26 12:13:24,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,970 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,971 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 788 flow. Second operand 5 states and 423 transitions. [2023-08-26 12:13:24,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 129 transitions, 1655 flow [2023-08-26 12:13:24,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 129 transitions, 1528 flow, removed 48 selfloop flow, removed 2 redundant places. [2023-08-26 12:13:24,995 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 558 flow [2023-08-26 12:13:24,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=558, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2023-08-26 12:13:24,996 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2023-08-26 12:13:24,996 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 558 flow [2023-08-26 12:13:24,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:24,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:24,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:24,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 12:13:24,997 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 12:13:24,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:24,997 INFO L85 PathProgramCache]: Analyzing trace with hash -716656552, now seen corresponding path program 2 times [2023-08-26 12:13:24,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:24,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898088467] [2023-08-26 12:13:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:24,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:25,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:25,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898088467] [2023-08-26 12:13:25,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898088467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:25,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:25,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:13:25,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682005002] [2023-08-26 12:13:25,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:25,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 12:13:25,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 12:13:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 12:13:25,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 163 [2023-08-26 12:13:25,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:25,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 163 [2023-08-26 12:13:25,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:25,199 INFO L124 PetriNetUnfolderBase]: 208/403 cut-off events. [2023-08-26 12:13:25,199 INFO L125 PetriNetUnfolderBase]: For 3527/3527 co-relation queries the response was YES. [2023-08-26 12:13:25,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471 conditions, 403 events. 208/403 cut-off events. For 3527/3527 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1669 event pairs, 32 based on Foata normal form. 7/410 useless extension candidates. Maximal degree in co-relation 2446. Up to 125 conditions per place. [2023-08-26 12:13:25,202 INFO L140 encePairwiseOnDemand]: 155/163 looper letters, 34 selfloop transitions, 14 changer transitions 38/86 dead transitions. [2023-08-26 12:13:25,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 1029 flow [2023-08-26 12:13:25,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 12:13:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 12:13:25,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 507 transitions. [2023-08-26 12:13:25,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184049079754601 [2023-08-26 12:13:25,204 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 507 transitions. [2023-08-26 12:13:25,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 507 transitions. [2023-08-26 12:13:25,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:25,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 507 transitions. [2023-08-26 12:13:25,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.5) internal successors, (507), 6 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,207 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,208 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 558 flow. Second operand 6 states and 507 transitions. [2023-08-26 12:13:25,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 1029 flow [2023-08-26 12:13:25,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 86 transitions, 937 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-26 12:13:25,220 INFO L231 Difference]: Finished difference. Result has 60 places, 34 transitions, 386 flow [2023-08-26 12:13:25,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=386, PETRI_PLACES=60, PETRI_TRANSITIONS=34} [2023-08-26 12:13:25,222 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-26 12:13:25,222 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 34 transitions, 386 flow [2023-08-26 12:13:25,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 12:13:25,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:25,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 12:13:25,223 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 12:13:25,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 12:13:25,223 INFO L85 PathProgramCache]: Analyzing trace with hash 206972436, now seen corresponding path program 1 times [2023-08-26 12:13:25,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 12:13:25,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129084586] [2023-08-26 12:13:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 12:13:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 12:13:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 12:13:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 12:13:25,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 12:13:25,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129084586] [2023-08-26 12:13:25,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129084586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 12:13:25,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 12:13:25,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 12:13:25,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030067446] [2023-08-26 12:13:25,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 12:13:25,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 12:13:25,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 12:13:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 12:13:25,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 12:13:25,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 163 [2023-08-26 12:13:25,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 34 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 12:13:25,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 163 [2023-08-26 12:13:25,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 12:13:25,414 INFO L124 PetriNetUnfolderBase]: 82/178 cut-off events. [2023-08-26 12:13:25,414 INFO L125 PetriNetUnfolderBase]: For 1203/1232 co-relation queries the response was YES. [2023-08-26 12:13:25,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 178 events. 82/178 cut-off events. For 1203/1232 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 671 event pairs, 12 based on Foata normal form. 17/188 useless extension candidates. Maximal degree in co-relation 964. Up to 61 conditions per place. [2023-08-26 12:13:25,415 INFO L140 encePairwiseOnDemand]: 157/163 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-26 12:13:25,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 670 flow [2023-08-26 12:13:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 12:13:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 12:13:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 595 transitions. [2023-08-26 12:13:25,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214723926380368 [2023-08-26 12:13:25,417 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 595 transitions. [2023-08-26 12:13:25,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 595 transitions. [2023-08-26 12:13:25,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 12:13:25,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 595 transitions. [2023-08-26 12:13:25,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,421 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,421 INFO L175 Difference]: Start difference. First operand has 60 places, 34 transitions, 386 flow. Second operand 7 states and 595 transitions. [2023-08-26 12:13:25,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 670 flow [2023-08-26 12:13:25,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 588 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-26 12:13:25,425 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-08-26 12:13:25,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-08-26 12:13:25,425 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 23 predicate places. [2023-08-26 12:13:25,426 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-08-26 12:13:25,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 12:13:25,428 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-08-26 12:13:25,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-26 12:13:25,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-26 12:13:25,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-26 12:13:25,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-26 12:13:25,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-08-26 12:13:25,429 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (3 of 10 remaining) [2023-08-26 12:13:25,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-26 12:13:25,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-26 12:13:25,430 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-08-26 12:13:25,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 12:13:25,430 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 12:13:25,433 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 12:13:25,433 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 12:13:25,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 12:13:25 BasicIcfg [2023-08-26 12:13:25,436 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 12:13:25,436 INFO L158 Benchmark]: Toolchain (without parser) took 6765.57ms. Allocated memory was 379.6MB in the beginning and 484.4MB in the end (delta: 104.9MB). Free memory was 354.7MB in the beginning and 234.7MB in the end (delta: 120.0MB). Peak memory consumption was 226.4MB. Max. memory is 16.0GB. [2023-08-26 12:13:25,436 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 379.6MB. Free memory is still 355.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 12:13:25,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.03ms. Allocated memory is still 379.6MB. Free memory was 354.7MB in the beginning and 334.3MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 12:13:25,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.63ms. Allocated memory is still 379.6MB. Free memory was 334.3MB in the beginning and 332.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:13:25,437 INFO L158 Benchmark]: Boogie Preprocessor took 37.26ms. Allocated memory is still 379.6MB. Free memory was 332.2MB in the beginning and 330.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 12:13:25,437 INFO L158 Benchmark]: RCFGBuilder took 332.70ms. Allocated memory is still 379.6MB. Free memory was 330.5MB in the beginning and 316.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 12:13:25,438 INFO L158 Benchmark]: TraceAbstraction took 5825.23ms. Allocated memory was 379.6MB in the beginning and 484.4MB in the end (delta: 104.9MB). Free memory was 315.4MB in the beginning and 234.7MB in the end (delta: 80.7MB). Peak memory consumption was 188.7MB. Max. memory is 16.0GB. [2023-08-26 12:13:25,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 379.6MB. Free memory is still 355.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 506.03ms. Allocated memory is still 379.6MB. Free memory was 354.7MB in the beginning and 334.3MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.63ms. Allocated memory is still 379.6MB. Free memory was 334.3MB in the beginning and 332.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.26ms. Allocated memory is still 379.6MB. Free memory was 332.2MB in the beginning and 330.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 332.70ms. Allocated memory is still 379.6MB. Free memory was 330.5MB in the beginning and 316.2MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5825.23ms. Allocated memory was 379.6MB in the beginning and 484.4MB in the end (delta: 104.9MB). Free memory was 315.4MB in the beginning and 234.7MB in the end (delta: 80.7MB). Peak memory consumption was 188.7MB. 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: 2.2s, 86 PlacesBefore, 33 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 5 FixpointIterations, 25 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 69 TotalNumberOfCompositions, 2218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1114, independent: 1035, independent conditional: 0, independent unconditional: 1035, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 626, independent: 590, independent conditional: 0, independent unconditional: 590, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1114, independent: 445, independent conditional: 0, independent unconditional: 445, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 626, unknown conditional: 0, unknown unconditional: 626] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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, 116 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: 5.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 524 IncrementalHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 23 mSDtfsCounter, 524 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=788occurred in iteration=8, InterpolantAutomatonStates: 51, 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, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 555 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 12:13:25,456 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...