/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 08:29:39,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 08:29:39,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 08:29:39,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 08:29:39,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 08:29:39,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 08:29:39,179 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 08:29:39,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 08:29:39,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 08:29:39,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 08:29:39,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 08:29:39,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 08:29:39,213 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 08:29:39,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 08:29:39,214 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 08:29:39,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 08:29:39,215 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 08:29:39,215 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 08:29:39,215 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 08:29:39,215 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 08:29:39,215 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 08:29:39,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 08:29:39,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 08:29:39,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 08:29:39,216 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 08:29:39,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 08:29:39,217 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 08:29:39,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 08:29:39,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 08:29:39,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 08:29:39,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 08:29:39,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 08:29:39,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 08:29:39,219 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 08:29:39,219 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 08:29:39,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 08:29:39,219 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 08:29:39,219 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 08:29:39,219 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 08:29:39,220 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 08:29:39,220 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 08:29:39,220 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 08:29:39,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 08:29:39,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 08:29:39,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 08:29:39,430 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 08:29:39,431 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 08:29:39,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-trans.wvr_bound2.c [2023-08-04 08:29:40,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 08:29:40,753 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 08:29:40,753 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-trans.wvr_bound2.c [2023-08-04 08:29:40,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2490cfa/68907939635e417abb8ae06b37721085/FLAG8a9377e10 [2023-08-04 08:29:40,781 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd2490cfa/68907939635e417abb8ae06b37721085 [2023-08-04 08:29:40,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 08:29:40,788 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 08:29:40,790 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 08:29:40,790 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 08:29:40,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 08:29:40,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 08:29:40" (1/1) ... [2023-08-04 08:29:40,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed02b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:40, skipping insertion in model container [2023-08-04 08:29:40,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 08:29:40" (1/1) ... [2023-08-04 08:29:40,838 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 08:29:41,126 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-trans.wvr_bound2.c[19117,19130] [2023-08-04 08:29:41,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 08:29:41,138 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 08:29:41,237 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-trans.wvr_bound2.c[19117,19130] [2023-08-04 08:29:41,239 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 08:29:41,262 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 08:29:41,262 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 08:29:41,268 INFO L206 MainTranslator]: Completed translation [2023-08-04 08:29:41,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41 WrapperNode [2023-08-04 08:29:41,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 08:29:41,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 08:29:41,270 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 08:29:41,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 08:29:41,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,381 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2413 [2023-08-04 08:29:41,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 08:29:41,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 08:29:41,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 08:29:41,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 08:29:41,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,508 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,545 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 08:29:41,546 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 08:29:41,546 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 08:29:41,546 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 08:29:41,547 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (1/1) ... [2023-08-04 08:29:41,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 08:29:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:29:41,572 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) [2023-08-04 08:29:41,594 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 [2023-08-04 08:29:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 08:29:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 08:29:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 08:29:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 08:29:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 08:29:41,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 08:29:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 08:29:41,607 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 08:29:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 08:29:41,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 08:29:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 08:29:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 08:29:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 08:29:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 08:29:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 08:29:41,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 08:29:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 08:29:41,612 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 08:29:41,838 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 08:29:41,839 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 08:29:43,569 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 08:29:45,733 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 08:29:45,734 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-04 08:29:45,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 08:29:45 BoogieIcfgContainer [2023-08-04 08:29:45,737 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 08:29:45,740 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 08:29:45,741 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 08:29:45,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 08:29:45,744 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 08:29:40" (1/3) ... [2023-08-04 08:29:45,745 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659d11ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 08:29:45, skipping insertion in model container [2023-08-04 08:29:45,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 08:29:41" (2/3) ... [2023-08-04 08:29:45,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659d11ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 08:29:45, skipping insertion in model container [2023-08-04 08:29:45,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 08:29:45" (3/3) ... [2023-08-04 08:29:45,748 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-poker-hand-trans.wvr_bound2.c [2023-08-04 08:29:45,756 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 08:29:45,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 08:29:45,764 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 08:29:45,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 08:29:46,201 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 08:29:46,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 08:29:46,816 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 08:29:46,816 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 08:29:46,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6201 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 967. Up to 28 conditions per place. [2023-08-04 08:29:46,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 08:29:46,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 687 places, 774 transitions, 1590 flow [2023-08-04 08:29:46,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 08:29:46,869 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 08:29:46,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 08:29:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 08:29:47,260 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 08:29:47,261 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 08:29:47,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6201 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 967. Up to 28 conditions per place. [2023-08-04 08:29:47,306 INFO L119 LiptonReduction]: Number of co-enabled transitions 43560 [2023-08-04 08:31:08,408 INFO L134 LiptonReduction]: Checked pairs total: 51985 [2023-08-04 08:31:08,408 INFO L136 LiptonReduction]: Total number of compositions: 884 [2023-08-04 08:31:08,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 08:31:08,437 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=true, 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;@7ca1786e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 08:31:08,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 08:31:08,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 08:31:08,476 INFO L124 PetriNetUnfolderBase]: 24/70 cut-off events. [2023-08-04 08:31:08,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 08:31:08,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:08,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:08,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:08,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:08,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1562305290, now seen corresponding path program 1 times [2023-08-04 08:31:08,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:08,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923284694] [2023-08-04 08:31:08,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:08,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:31:09,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:09,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923284694] [2023-08-04 08:31:09,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923284694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:09,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:31:09,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 08:31:09,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128936990] [2023-08-04 08:31:09,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:09,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:09,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:09,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:31:09,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1658 [2023-08-04 08:31:09,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 83 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 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) [2023-08-04 08:31:09,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:09,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1658 [2023-08-04 08:31:09,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:16,586 INFO L124 PetriNetUnfolderBase]: 6115/7851 cut-off events. [2023-08-04 08:31:16,587 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-04 08:31:16,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15811 conditions, 7851 events. 6115/7851 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28902 event pairs, 2466 based on Foata normal form. 0/3897 useless extension candidates. Maximal degree in co-relation 12842. Up to 7620 conditions per place. [2023-08-04 08:31:16,624 INFO L140 encePairwiseOnDemand]: 1650/1658 looper letters, 73 selfloop transitions, 6 changer transitions 3/85 dead transitions. [2023-08-04 08:31:16,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 370 flow [2023-08-04 08:31:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1976 transitions. [2023-08-04 08:31:16,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39726578206674706 [2023-08-04 08:31:16,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1976 transitions. [2023-08-04 08:31:16,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1976 transitions. [2023-08-04 08:31:16,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:16,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1976 transitions. [2023-08-04 08:31:16,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 658.6666666666666) internal successors, (1976), 3 states have internal predecessors, (1976), 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) [2023-08-04 08:31:16,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:16,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:16,679 INFO L175 Difference]: Start difference. First operand has 57 places, 83 transitions, 208 flow. Second operand 3 states and 1976 transitions. [2023-08-04 08:31:16,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 370 flow [2023-08-04 08:31:16,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 08:31:16,686 INFO L231 Difference]: Finished difference. Result has 59 places, 82 transitions, 226 flow [2023-08-04 08:31:16,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=59, PETRI_TRANSITIONS=82} [2023-08-04 08:31:16,690 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-04 08:31:16,691 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 82 transitions, 226 flow [2023-08-04 08:31:16,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 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) [2023-08-04 08:31:16,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:16,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 08:31:16,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:16,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:16,701 INFO L85 PathProgramCache]: Analyzing trace with hash 594700522, now seen corresponding path program 1 times [2023-08-04 08:31:16,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:16,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640499663] [2023-08-04 08:31:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 08:31:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640499663] [2023-08-04 08:31:16,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640499663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:16,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:31:16,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 08:31:16,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663551649] [2023-08-04 08:31:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:16,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:31:17,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1658 [2023-08-04 08:31:17,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 82 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 638.3333333333334) internal successors, (1915), 3 states have internal predecessors, (1915), 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) [2023-08-04 08:31:17,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:17,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1658 [2023-08-04 08:31:17,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:23,828 INFO L124 PetriNetUnfolderBase]: 6115/7811 cut-off events. [2023-08-04 08:31:23,828 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-04 08:31:23,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15746 conditions, 7811 events. 6115/7811 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 28187 event pairs, 2466 based on Foata normal form. 0/3860 useless extension candidates. Maximal degree in co-relation 15700. Up to 7623 conditions per place. [2023-08-04 08:31:23,858 INFO L140 encePairwiseOnDemand]: 1645/1658 looper letters, 73 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2023-08-04 08:31:23,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 408 flow [2023-08-04 08:31:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:23,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1981 transitions. [2023-08-04 08:31:23,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39827100924809006 [2023-08-04 08:31:23,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1981 transitions. [2023-08-04 08:31:23,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1981 transitions. [2023-08-04 08:31:23,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:23,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1981 transitions. [2023-08-04 08:31:23,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 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) [2023-08-04 08:31:23,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:23,881 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:23,881 INFO L175 Difference]: Start difference. First operand has 59 places, 82 transitions, 226 flow. Second operand 3 states and 1981 transitions. [2023-08-04 08:31:23,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 408 flow [2023-08-04 08:31:23,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 390 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 08:31:23,889 INFO L231 Difference]: Finished difference. Result has 55 places, 88 transitions, 270 flow [2023-08-04 08:31:23,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=55, PETRI_TRANSITIONS=88} [2023-08-04 08:31:23,891 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -2 predicate places. [2023-08-04 08:31:23,891 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 88 transitions, 270 flow [2023-08-04 08:31:23,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 638.3333333333334) internal successors, (1915), 3 states have internal predecessors, (1915), 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) [2023-08-04 08:31:23,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:23,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:23,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 08:31:23,893 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:23,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash 90098157, now seen corresponding path program 1 times [2023-08-04 08:31:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059266323] [2023-08-04 08:31:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-04 08:31:24,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:24,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059266323] [2023-08-04 08:31:24,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059266323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:24,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:31:24,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 08:31:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079077076] [2023-08-04 08:31:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:24,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:31:24,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 1658 [2023-08-04 08:31:24,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 88 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 684.3333333333334) internal successors, (2053), 3 states have internal predecessors, (2053), 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) [2023-08-04 08:31:24,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:24,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 1658 [2023-08-04 08:31:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:29,861 INFO L124 PetriNetUnfolderBase]: 5884/7496 cut-off events. [2023-08-04 08:31:29,862 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-04 08:31:29,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15102 conditions, 7496 events. 5884/7496 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 26595 event pairs, 1524 based on Foata normal form. 0/3708 useless extension candidates. Maximal degree in co-relation 15051. Up to 7304 conditions per place. [2023-08-04 08:31:29,882 INFO L140 encePairwiseOnDemand]: 1655/1658 looper letters, 90 selfloop transitions, 2 changer transitions 1/96 dead transitions. [2023-08-04 08:31:29,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 472 flow [2023-08-04 08:31:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2110 transitions. [2023-08-04 08:31:29,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424205870526739 [2023-08-04 08:31:29,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2110 transitions. [2023-08-04 08:31:29,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2110 transitions. [2023-08-04 08:31:29,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:29,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2110 transitions. [2023-08-04 08:31:29,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 703.3333333333334) internal successors, (2110), 3 states have internal predecessors, (2110), 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) [2023-08-04 08:31:29,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:29,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:29,903 INFO L175 Difference]: Start difference. First operand has 55 places, 88 transitions, 270 flow. Second operand 3 states and 2110 transitions. [2023-08-04 08:31:29,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 472 flow [2023-08-04 08:31:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:31:29,907 INFO L231 Difference]: Finished difference. Result has 57 places, 88 transitions, 266 flow [2023-08-04 08:31:29,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=57, PETRI_TRANSITIONS=88} [2023-08-04 08:31:29,909 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-08-04 08:31:29,912 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 88 transitions, 266 flow [2023-08-04 08:31:29,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 684.3333333333334) internal successors, (2053), 3 states have internal predecessors, (2053), 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) [2023-08-04 08:31:29,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:29,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:29,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 08:31:29,914 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:29,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:29,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1844157965, now seen corresponding path program 1 times [2023-08-04 08:31:29,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:29,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256072655] [2023-08-04 08:31:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:29,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-04 08:31:30,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:30,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256072655] [2023-08-04 08:31:30,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256072655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:31:30,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755287391] [2023-08-04 08:31:30,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:30,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:30,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:31:30,062 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:31:30,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 08:31:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:30,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:31:30,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:31:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 08:31:30,774 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:31:30,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755287391] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:30,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:31:30,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 08:31:30,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457169168] [2023-08-04 08:31:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:30,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:30,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:30,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:31:30,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 1658 [2023-08-04 08:31:30,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 88 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 685.3333333333334) internal successors, (2056), 3 states have internal predecessors, (2056), 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) [2023-08-04 08:31:30,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:30,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 1658 [2023-08-04 08:31:30,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:36,522 INFO L124 PetriNetUnfolderBase]: 5694/7250 cut-off events. [2023-08-04 08:31:36,523 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-04 08:31:36,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14614 conditions, 7250 events. 5694/7250 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25163 event pairs, 1511 based on Foata normal form. 0/3590 useless extension candidates. Maximal degree in co-relation 14562. Up to 6986 conditions per place. [2023-08-04 08:31:36,546 INFO L140 encePairwiseOnDemand]: 1655/1658 looper letters, 97 selfloop transitions, 2 changer transitions 1/103 dead transitions. [2023-08-04 08:31:36,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 496 flow [2023-08-04 08:31:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2117 transitions. [2023-08-04 08:31:36,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4256131885806192 [2023-08-04 08:31:36,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2117 transitions. [2023-08-04 08:31:36,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2117 transitions. [2023-08-04 08:31:36,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:36,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2117 transitions. [2023-08-04 08:31:36,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 705.6666666666666) internal successors, (2117), 3 states have internal predecessors, (2117), 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) [2023-08-04 08:31:36,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:36,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:36,566 INFO L175 Difference]: Start difference. First operand has 57 places, 88 transitions, 266 flow. Second operand 3 states and 2117 transitions. [2023-08-04 08:31:36,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 496 flow [2023-08-04 08:31:36,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 103 transitions, 492 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:31:36,569 INFO L231 Difference]: Finished difference. Result has 58 places, 88 transitions, 270 flow [2023-08-04 08:31:36,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=58, PETRI_TRANSITIONS=88} [2023-08-04 08:31:36,570 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 1 predicate places. [2023-08-04 08:31:36,570 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 88 transitions, 270 flow [2023-08-04 08:31:36,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 685.3333333333334) internal successors, (2056), 3 states have internal predecessors, (2056), 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) [2023-08-04 08:31:36,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:36,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:36,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 08:31:36,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:36,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:36,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:36,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1905473017, now seen corresponding path program 1 times [2023-08-04 08:31:36,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:36,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812669191] [2023-08-04 08:31:36,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:36,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:36,898 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 08:31:36,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:36,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812669191] [2023-08-04 08:31:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812669191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:31:36,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502934683] [2023-08-04 08:31:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:36,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:36,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:31:36,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:31:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 08:31:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:37,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:31:37,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:31:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 08:31:37,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:31:37,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502934683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:37,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:31:37,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 08:31:37,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89581999] [2023-08-04 08:31:37,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:37,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:37,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:31:37,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 1658 [2023-08-04 08:31:37,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 88 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 686.3333333333334) internal successors, (2059), 3 states have internal predecessors, (2059), 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) [2023-08-04 08:31:37,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:37,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 1658 [2023-08-04 08:31:37,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:43,332 INFO L124 PetriNetUnfolderBase]: 5678/7234 cut-off events. [2023-08-04 08:31:43,332 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-04 08:31:43,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14630 conditions, 7234 events. 5678/7234 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 24520 event pairs, 1490 based on Foata normal form. 0/3606 useless extension candidates. Maximal degree in co-relation 14577. Up to 6556 conditions per place. [2023-08-04 08:31:43,347 INFO L140 encePairwiseOnDemand]: 1655/1658 looper letters, 104 selfloop transitions, 2 changer transitions 1/110 dead transitions. [2023-08-04 08:31:43,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 110 transitions, 528 flow [2023-08-04 08:31:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2124 transitions. [2023-08-04 08:31:43,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270205066344994 [2023-08-04 08:31:43,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2124 transitions. [2023-08-04 08:31:43,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2124 transitions. [2023-08-04 08:31:43,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:43,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2124 transitions. [2023-08-04 08:31:43,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 708.0) internal successors, (2124), 3 states have internal predecessors, (2124), 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) [2023-08-04 08:31:43,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:43,366 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:43,366 INFO L175 Difference]: Start difference. First operand has 58 places, 88 transitions, 270 flow. Second operand 3 states and 2124 transitions. [2023-08-04 08:31:43,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 110 transitions, 528 flow [2023-08-04 08:31:43,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 110 transitions, 524 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:31:43,369 INFO L231 Difference]: Finished difference. Result has 59 places, 88 transitions, 274 flow [2023-08-04 08:31:43,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=88} [2023-08-04 08:31:43,369 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-04 08:31:43,370 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 88 transitions, 274 flow [2023-08-04 08:31:43,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 686.3333333333334) internal successors, (2059), 3 states have internal predecessors, (2059), 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) [2023-08-04 08:31:43,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:43,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:43,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 08:31:43,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:43,582 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:43,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:43,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1371384630, now seen corresponding path program 1 times [2023-08-04 08:31:43,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:43,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971984076] [2023-08-04 08:31:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:43,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:43,728 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 08:31:43,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:43,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971984076] [2023-08-04 08:31:43,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971984076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:31:43,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988739839] [2023-08-04 08:31:43,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:43,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:43,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:31:43,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:31:43,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 08:31:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:44,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:31:44,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:31:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 08:31:44,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:31:44,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988739839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:44,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:31:44,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 08:31:44,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570534706] [2023-08-04 08:31:44,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:44,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:44,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:31:44,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 1658 [2023-08-04 08:31:44,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 88 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 687.3333333333334) internal successors, (2062), 3 states have internal predecessors, (2062), 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) [2023-08-04 08:31:44,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:44,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 1658 [2023-08-04 08:31:44,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:48,132 INFO L124 PetriNetUnfolderBase]: 3566/4610 cut-off events. [2023-08-04 08:31:48,132 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-08-04 08:31:48,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9571 conditions, 4610 events. 3566/4610 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 14415 event pairs, 1099 based on Foata normal form. 0/2390 useless extension candidates. Maximal degree in co-relation 9517. Up to 3508 conditions per place. [2023-08-04 08:31:48,144 INFO L140 encePairwiseOnDemand]: 1655/1658 looper letters, 109 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-04 08:31:48,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 114 transitions, 554 flow [2023-08-04 08:31:48,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2128 transitions. [2023-08-04 08:31:48,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42782468837957377 [2023-08-04 08:31:48,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2128 transitions. [2023-08-04 08:31:48,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2128 transitions. [2023-08-04 08:31:48,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:48,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2128 transitions. [2023-08-04 08:31:48,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 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) [2023-08-04 08:31:48,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:48,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:48,160 INFO L175 Difference]: Start difference. First operand has 59 places, 88 transitions, 274 flow. Second operand 3 states and 2128 transitions. [2023-08-04 08:31:48,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 114 transitions, 554 flow [2023-08-04 08:31:48,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 114 transitions, 550 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:31:48,163 INFO L231 Difference]: Finished difference. Result has 60 places, 89 transitions, 282 flow [2023-08-04 08:31:48,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=60, PETRI_TRANSITIONS=89} [2023-08-04 08:31:48,163 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-08-04 08:31:48,164 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 89 transitions, 282 flow [2023-08-04 08:31:48,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 687.3333333333334) internal successors, (2062), 3 states have internal predecessors, (2062), 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) [2023-08-04 08:31:48,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:48,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:48,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 08:31:48,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:48,374 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:48,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash 445102243, now seen corresponding path program 1 times [2023-08-04 08:31:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:48,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743133880] [2023-08-04 08:31:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:48,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 08:31:48,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743133880] [2023-08-04 08:31:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743133880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:31:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28273578] [2023-08-04 08:31:48,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:48,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:48,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:31:48,577 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:31:48,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 08:31:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:49,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:31:49,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:31:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 08:31:49,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:31:49,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28273578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:49,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:31:49,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 08:31:49,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946800607] [2023-08-04 08:31:49,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:49,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:49,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:49,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:49,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:31:49,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 1658 [2023-08-04 08:31:49,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 89 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 688.6666666666666) internal successors, (2066), 3 states have internal predecessors, (2066), 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) [2023-08-04 08:31:49,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:49,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 1658 [2023-08-04 08:31:49,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:52,544 INFO L124 PetriNetUnfolderBase]: 3049/3953 cut-off events. [2023-08-04 08:31:52,544 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2023-08-04 08:31:52,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8402 conditions, 3953 events. 3049/3953 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11911 event pairs, 1094 based on Foata normal form. 0/2166 useless extension candidates. Maximal degree in co-relation 8347. Up to 3330 conditions per place. [2023-08-04 08:31:52,554 INFO L140 encePairwiseOnDemand]: 1655/1658 looper letters, 110 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-04 08:31:52,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 115 transitions, 564 flow [2023-08-04 08:31:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2128 transitions. [2023-08-04 08:31:52,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42782468837957377 [2023-08-04 08:31:52,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2128 transitions. [2023-08-04 08:31:52,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2128 transitions. [2023-08-04 08:31:52,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:52,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2128 transitions. [2023-08-04 08:31:52,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 709.3333333333334) internal successors, (2128), 3 states have internal predecessors, (2128), 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) [2023-08-04 08:31:52,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:52,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:52,569 INFO L175 Difference]: Start difference. First operand has 60 places, 89 transitions, 282 flow. Second operand 3 states and 2128 transitions. [2023-08-04 08:31:52,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 115 transitions, 564 flow [2023-08-04 08:31:52,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 115 transitions, 562 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:31:52,573 INFO L231 Difference]: Finished difference. Result has 62 places, 90 transitions, 292 flow [2023-08-04 08:31:52,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=62, PETRI_TRANSITIONS=90} [2023-08-04 08:31:52,573 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-08-04 08:31:52,573 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 90 transitions, 292 flow [2023-08-04 08:31:52,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 688.6666666666666) internal successors, (2066), 3 states have internal predecessors, (2066), 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) [2023-08-04 08:31:52,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:52,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:52,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 08:31:52,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:52,784 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:52,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1158147487, now seen corresponding path program 1 times [2023-08-04 08:31:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:52,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326811333] [2023-08-04 08:31:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:52,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:53,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 08:31:53,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326811333] [2023-08-04 08:31:53,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326811333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:31:53,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632891479] [2023-08-04 08:31:53,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:53,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:53,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:31:53,014 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:31:53,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 08:31:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:53,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 08:31:53,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:31:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 08:31:53,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:31:53,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632891479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:53,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:31:53,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-04 08:31:53,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336114545] [2023-08-04 08:31:53,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:53,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:53,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:53,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:53,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:31:53,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 675 out of 1658 [2023-08-04 08:31:53,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 90 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 690.0) internal successors, (2070), 3 states have internal predecessors, (2070), 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) [2023-08-04 08:31:53,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:53,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 675 of 1658 [2023-08-04 08:31:53,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:31:56,960 INFO L124 PetriNetUnfolderBase]: 3027/3921 cut-off events. [2023-08-04 08:31:56,960 INFO L125 PetriNetUnfolderBase]: For 289/289 co-relation queries the response was YES. [2023-08-04 08:31:56,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 3921 events. 3027/3921 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11782 event pairs, 1239 based on Foata normal form. 0/2171 useless extension candidates. Maximal degree in co-relation 8336. Up to 3775 conditions per place. [2023-08-04 08:31:56,971 INFO L140 encePairwiseOnDemand]: 1655/1658 looper letters, 104 selfloop transitions, 2 changer transitions 3/112 dead transitions. [2023-08-04 08:31:56,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 554 flow [2023-08-04 08:31:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:31:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:31:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2124 transitions. [2023-08-04 08:31:56,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270205066344994 [2023-08-04 08:31:56,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2124 transitions. [2023-08-04 08:31:56,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2124 transitions. [2023-08-04 08:31:56,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:31:56,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2124 transitions. [2023-08-04 08:31:56,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 708.0) internal successors, (2124), 3 states have internal predecessors, (2124), 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) [2023-08-04 08:31:56,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:56,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:31:56,986 INFO L175 Difference]: Start difference. First operand has 62 places, 90 transitions, 292 flow. Second operand 3 states and 2124 transitions. [2023-08-04 08:31:56,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 554 flow [2023-08-04 08:31:56,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:31:56,992 INFO L231 Difference]: Finished difference. Result has 64 places, 88 transitions, 290 flow [2023-08-04 08:31:56,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=290, PETRI_PLACES=64, PETRI_TRANSITIONS=88} [2023-08-04 08:31:56,992 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2023-08-04 08:31:56,993 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 88 transitions, 290 flow [2023-08-04 08:31:56,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 690.0) internal successors, (2070), 3 states have internal predecessors, (2070), 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) [2023-08-04 08:31:56,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:31:56,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:31:57,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 08:31:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:57,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:31:57,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:31:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1887122982, now seen corresponding path program 1 times [2023-08-04 08:31:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:31:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188220953] [2023-08-04 08:31:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:31:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 08:31:57,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:31:57,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188220953] [2023-08-04 08:31:57,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188220953] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:31:57,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293466762] [2023-08-04 08:31:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:31:57,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:31:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:31:57,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:31:57,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 08:31:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:31:58,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 08:31:58,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:31:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-04 08:31:58,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:31:58,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293466762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:31:58,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:31:58,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-04 08:31:58,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375467092] [2023-08-04 08:31:58,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:31:58,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:31:58,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:31:58,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:31:58,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:31:58,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1658 [2023-08-04 08:31:58,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 88 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 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) [2023-08-04 08:31:58,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:31:58,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1658 [2023-08-04 08:31:58,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:32:01,606 INFO L124 PetriNetUnfolderBase]: 2938/3775 cut-off events. [2023-08-04 08:32:01,607 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-08-04 08:32:01,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8057 conditions, 3775 events. 2938/3775 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11069 event pairs, 1219 based on Foata normal form. 1/2075 useless extension candidates. Maximal degree in co-relation 7994. Up to 3696 conditions per place. [2023-08-04 08:32:01,614 INFO L140 encePairwiseOnDemand]: 1646/1658 looper letters, 76 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2023-08-04 08:32:01,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 472 flow [2023-08-04 08:32:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:32:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:32:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1978 transitions. [2023-08-04 08:32:01,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976678729392843 [2023-08-04 08:32:01,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1978 transitions. [2023-08-04 08:32:01,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1978 transitions. [2023-08-04 08:32:01,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:32:01,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1978 transitions. [2023-08-04 08:32:01,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 659.3333333333334) internal successors, (1978), 3 states have internal predecessors, (1978), 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) [2023-08-04 08:32:01,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:32:01,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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) [2023-08-04 08:32:01,628 INFO L175 Difference]: Start difference. First operand has 64 places, 88 transitions, 290 flow. Second operand 3 states and 1978 transitions. [2023-08-04 08:32:01,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 472 flow [2023-08-04 08:32:01,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 468 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:32:01,632 INFO L231 Difference]: Finished difference. Result has 65 places, 91 transitions, 334 flow [2023-08-04 08:32:01,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=334, PETRI_PLACES=65, PETRI_TRANSITIONS=91} [2023-08-04 08:32:01,633 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2023-08-04 08:32:01,633 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 91 transitions, 334 flow [2023-08-04 08:32:01,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 647.3333333333334) internal successors, (1942), 3 states have internal predecessors, (1942), 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) [2023-08-04 08:32:01,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:32:01,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:32:01,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 08:32:01,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:32:01,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:32:01,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:32:01,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1479825611, now seen corresponding path program 1 times [2023-08-04 08:32:01,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:32:01,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099171643] [2023-08-04 08:32:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:32:01,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:32:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:32:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 08:32:02,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:32:02,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099171643] [2023-08-04 08:32:02,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099171643] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:32:02,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385523818] [2023-08-04 08:32:02,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:32:02,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:32:02,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:32:02,124 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:32:02,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 08:32:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:32:02,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-04 08:32:02,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:32:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 08:32:02,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:32:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 08:32:03,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385523818] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:32:03,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:32:03,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-04 08:32:03,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269315286] [2023-08-04 08:32:03,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:32:03,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 08:32:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:32:03,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 08:32:03,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-04 08:32:03,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 1658 [2023-08-04 08:32:03,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 91 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 612.625) internal successors, (4901), 8 states have internal predecessors, (4901), 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) [2023-08-04 08:32:03,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:32:03,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 1658 [2023-08-04 08:32:03,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:32:03,650 INFO L124 PetriNetUnfolderBase]: 30/92 cut-off events. [2023-08-04 08:32:03,650 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 08:32:03,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 92 events. 30/92 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 67 event pairs, 0 based on Foata normal form. 23/98 useless extension candidates. Maximal degree in co-relation 263. Up to 25 conditions per place. [2023-08-04 08:32:03,650 INFO L140 encePairwiseOnDemand]: 1631/1658 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-08-04 08:32:03,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 79 transitions, 468 flow [2023-08-04 08:32:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 08:32:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 08:32:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4920 transitions. [2023-08-04 08:32:03,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709288299155609 [2023-08-04 08:32:03,658 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4920 transitions. [2023-08-04 08:32:03,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4920 transitions. [2023-08-04 08:32:03,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:32:03,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4920 transitions. [2023-08-04 08:32:03,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 615.0) internal successors, (4920), 8 states have internal predecessors, (4920), 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) [2023-08-04 08:32:03,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1658.0) internal successors, (14922), 9 states have internal predecessors, (14922), 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) [2023-08-04 08:32:03,674 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1658.0) internal successors, (14922), 9 states have internal predecessors, (14922), 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) [2023-08-04 08:32:03,674 INFO L175 Difference]: Start difference. First operand has 65 places, 91 transitions, 334 flow. Second operand 8 states and 4920 transitions. [2023-08-04 08:32:03,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 79 transitions, 468 flow [2023-08-04 08:32:03,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 79 transitions, 454 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 08:32:03,676 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-04 08:32:03,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-04 08:32:03,676 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -16 predicate places. [2023-08-04 08:32:03,676 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-04 08:32:03,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 612.625) internal successors, (4901), 8 states have internal predecessors, (4901), 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) [2023-08-04 08:32:03,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 08:32:03,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 08:32:03,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:32:03,881 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:32:03,883 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 08:32:03,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 08:32:04,161 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 08:32:04,161 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 08:32:04,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6201 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 967. Up to 28 conditions per place. [2023-08-04 08:32:04,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 08:32:04,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 687 places, 774 transitions, 1590 flow [2023-08-04 08:32:04,176 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 08:32:04,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 08:32:04,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 08:32:04,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 08:32:04,438 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 08:32:04,438 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 08:32:04,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6201 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 967. Up to 28 conditions per place. [2023-08-04 08:32:04,472 INFO L119 LiptonReduction]: Number of co-enabled transitions 43560 [2023-08-04 08:33:21,057 INFO L134 LiptonReduction]: Checked pairs total: 51780 [2023-08-04 08:33:21,057 INFO L136 LiptonReduction]: Total number of compositions: 891 [2023-08-04 08:33:21,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 08:33:21,059 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=true, 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;@7ca1786e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 08:33:21,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 08:33:21,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 08:33:21,089 INFO L124 PetriNetUnfolderBase]: 24/68 cut-off events. [2023-08-04 08:33:21,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 08:33:21,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:33:21,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:33:21,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:33:21,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:33:21,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1922953599, now seen corresponding path program 1 times [2023-08-04 08:33:21,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:33:21,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258801013] [2023-08-04 08:33:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:21,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:33:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 08:33:21,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:33:21,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258801013] [2023-08-04 08:33:21,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258801013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:33:21,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:33:21,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 08:33:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870249131] [2023-08-04 08:33:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:33:21,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:33:21,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:33:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:33:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:33:21,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1665 [2023-08-04 08:33:21,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 83 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 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) [2023-08-04 08:33:21,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:33:21,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1665 [2023-08-04 08:33:21,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:33:27,296 INFO L124 PetriNetUnfolderBase]: 6115/7854 cut-off events. [2023-08-04 08:33:27,296 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-04 08:33:27,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15817 conditions, 7854 events. 6115/7854 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28977 event pairs, 2466 based on Foata normal form. 0/3900 useless extension candidates. Maximal degree in co-relation 12842. Up to 7620 conditions per place. [2023-08-04 08:33:27,305 INFO L140 encePairwiseOnDemand]: 1651/1665 looper letters, 51 selfloop transitions, 12 changer transitions 22/88 dead transitions. [2023-08-04 08:33:27,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 88 transitions, 382 flow [2023-08-04 08:33:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:33:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:33:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1982 transitions. [2023-08-04 08:33:27,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967967967967968 [2023-08-04 08:33:27,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1982 transitions. [2023-08-04 08:33:27,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1982 transitions. [2023-08-04 08:33:27,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:33:27,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1982 transitions. [2023-08-04 08:33:27,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 660.6666666666666) internal successors, (1982), 3 states have internal predecessors, (1982), 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) [2023-08-04 08:33:27,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1665.0) internal successors, (6660), 4 states have internal predecessors, (6660), 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) [2023-08-04 08:33:27,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1665.0) internal successors, (6660), 4 states have internal predecessors, (6660), 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) [2023-08-04 08:33:27,315 INFO L175 Difference]: Start difference. First operand has 57 places, 83 transitions, 208 flow. Second operand 3 states and 1982 transitions. [2023-08-04 08:33:27,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 88 transitions, 382 flow [2023-08-04 08:33:27,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 08:33:27,317 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 197 flow [2023-08-04 08:33:27,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1665, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2023-08-04 08:33:27,317 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-04 08:33:27,317 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 197 flow [2023-08-04 08:33:27,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 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) [2023-08-04 08:33:27,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:33:27,318 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:33:27,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 08:33:27,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:33:27,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:33:27,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1204700122, now seen corresponding path program 1 times [2023-08-04 08:33:27,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:33:27,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539274524] [2023-08-04 08:33:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:27,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:33:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 08:33:27,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:33:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539274524] [2023-08-04 08:33:27,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539274524] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:33:27,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471023157] [2023-08-04 08:33:27,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:27,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:33:27,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:33:27,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:33:27,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 08:33:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:28,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 08:33:28,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:33:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 08:33:28,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 08:33:28,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471023157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:33:28,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 08:33:28,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-04 08:33:28,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768070389] [2023-08-04 08:33:28,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:33:28,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:33:28,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:33:28,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:33:28,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 08:33:28,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1665 [2023-08-04 08:33:28,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 638.3333333333334) internal successors, (1915), 3 states have internal predecessors, (1915), 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) [2023-08-04 08:33:28,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:33:28,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1665 [2023-08-04 08:33:28,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:33:30,304 INFO L124 PetriNetUnfolderBase]: 1648/2152 cut-off events. [2023-08-04 08:33:30,304 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 08:33:30,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4398 conditions, 2152 events. 1648/2152 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6609 event pairs, 648 based on Foata normal form. 1/1129 useless extension candidates. Maximal degree in co-relation 4298. Up to 2101 conditions per place. [2023-08-04 08:33:30,310 INFO L140 encePairwiseOnDemand]: 1652/1665 looper letters, 57 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-08-04 08:33:30,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 72 transitions, 347 flow [2023-08-04 08:33:30,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:33:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 08:33:30,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1962 transitions. [2023-08-04 08:33:30,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3927927927927928 [2023-08-04 08:33:30,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1962 transitions. [2023-08-04 08:33:30,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1962 transitions. [2023-08-04 08:33:30,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:33:30,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1962 transitions. [2023-08-04 08:33:30,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 654.0) internal successors, (1962), 3 states have internal predecessors, (1962), 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) [2023-08-04 08:33:30,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1665.0) internal successors, (6660), 4 states have internal predecessors, (6660), 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) [2023-08-04 08:33:30,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1665.0) internal successors, (6660), 4 states have internal predecessors, (6660), 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) [2023-08-04 08:33:30,319 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 197 flow. Second operand 3 states and 1962 transitions. [2023-08-04 08:33:30,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 72 transitions, 347 flow [2023-08-04 08:33:30,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:33:30,320 INFO L231 Difference]: Finished difference. Result has 48 places, 72 transitions, 247 flow [2023-08-04 08:33:30,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1665, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=48, PETRI_TRANSITIONS=72} [2023-08-04 08:33:30,321 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-08-04 08:33:30,321 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 72 transitions, 247 flow [2023-08-04 08:33:30,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 638.3333333333334) internal successors, (1915), 3 states have internal predecessors, (1915), 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) [2023-08-04 08:33:30,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:33:30,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:33:30,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-04 08:33:30,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 08:33:30,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:33:30,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:33:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1892692191, now seen corresponding path program 1 times [2023-08-04 08:33:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:33:30,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229893620] [2023-08-04 08:33:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:30,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:33:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 08:33:30,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:33:30,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229893620] [2023-08-04 08:33:30,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229893620] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:33:30,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822716326] [2023-08-04 08:33:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:30,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:33:30,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:33:30,661 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:33:30,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 08:33:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:31,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-04 08:33:31,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:33:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 08:33:31,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:33:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 08:33:31,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822716326] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:33:31,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:33:31,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-04 08:33:31,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277208962] [2023-08-04 08:33:31,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:33:31,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 08:33:31,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:33:31,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 08:33:31,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-04 08:33:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1665 [2023-08-04 08:33:32,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 72 transitions, 247 flow. Second operand has 8 states, 8 states have (on average 613.25) internal successors, (4906), 8 states have internal predecessors, (4906), 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) [2023-08-04 08:33:32,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:33:32,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1665 [2023-08-04 08:33:32,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:33:34,145 INFO L124 PetriNetUnfolderBase]: 1648/2188 cut-off events. [2023-08-04 08:33:34,145 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 08:33:34,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 2188 events. 1648/2188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6609 event pairs, 648 based on Foata normal form. 18/1182 useless extension candidates. Maximal degree in co-relation 4416. Up to 2095 conditions per place. [2023-08-04 08:33:34,150 INFO L140 encePairwiseOnDemand]: 1640/1665 looper letters, 45 selfloop transitions, 60 changer transitions 0/108 dead transitions. [2023-08-04 08:33:34,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 108 transitions, 601 flow [2023-08-04 08:33:34,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 08:33:34,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 08:33:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4997 transitions. [2023-08-04 08:33:34,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37515015015015013 [2023-08-04 08:33:34,164 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4997 transitions. [2023-08-04 08:33:34,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4997 transitions. [2023-08-04 08:33:34,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:33:34,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4997 transitions. [2023-08-04 08:33:34,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 624.625) internal successors, (4997), 8 states have internal predecessors, (4997), 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) [2023-08-04 08:33:34,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1665.0) internal successors, (14985), 9 states have internal predecessors, (14985), 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) [2023-08-04 08:33:34,185 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1665.0) internal successors, (14985), 9 states have internal predecessors, (14985), 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) [2023-08-04 08:33:34,186 INFO L175 Difference]: Start difference. First operand has 48 places, 72 transitions, 247 flow. Second operand 8 states and 4997 transitions. [2023-08-04 08:33:34,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 108 transitions, 601 flow [2023-08-04 08:33:34,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 108 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 08:33:34,189 INFO L231 Difference]: Finished difference. Result has 57 places, 108 transitions, 589 flow [2023-08-04 08:33:34,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1665, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=589, PETRI_PLACES=57, PETRI_TRANSITIONS=108} [2023-08-04 08:33:34,191 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-08-04 08:33:34,191 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 108 transitions, 589 flow [2023-08-04 08:33:34,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 613.25) internal successors, (4906), 8 states have internal predecessors, (4906), 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) [2023-08-04 08:33:34,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:33:34,192 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:33:34,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 08:33:34,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 08:33:34,404 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:33:34,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:33:34,405 INFO L85 PathProgramCache]: Analyzing trace with hash -776967041, now seen corresponding path program 2 times [2023-08-04 08:33:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:33:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299237084] [2023-08-04 08:33:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:34,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:33:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-08-04 08:33:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:33:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299237084] [2023-08-04 08:33:34,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299237084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:33:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420825409] [2023-08-04 08:33:34,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 08:33:34,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:33:34,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:33:34,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:33:34,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 08:33:35,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 08:33:35,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 08:33:35,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 08:33:35,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:33:35,740 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-08-04 08:33:35,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:33:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-08-04 08:33:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420825409] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:33:35,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:33:35,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-04 08:33:35,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60521224] [2023-08-04 08:33:35,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:33:35,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-04 08:33:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:33:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-04 08:33:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2023-08-04 08:33:36,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1665 [2023-08-04 08:33:36,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 108 transitions, 589 flow. Second operand has 12 states, 12 states have (on average 610.0833333333334) internal successors, (7321), 12 states have internal predecessors, (7321), 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) [2023-08-04 08:33:36,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:33:36,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1665 [2023-08-04 08:33:36,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:33:38,415 INFO L124 PetriNetUnfolderBase]: 1648/2194 cut-off events. [2023-08-04 08:33:38,415 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 08:33:38,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4652 conditions, 2194 events. 1648/2194 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6609 event pairs, 648 based on Foata normal form. 1/1167 useless extension candidates. Maximal degree in co-relation 4456. Up to 2095 conditions per place. [2023-08-04 08:33:38,421 INFO L140 encePairwiseOnDemand]: 1641/1665 looper letters, 45 selfloop transitions, 66 changer transitions 0/114 dead transitions. [2023-08-04 08:33:38,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 847 flow [2023-08-04 08:33:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-04 08:33:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-04 08:33:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6794 transitions. [2023-08-04 08:33:38,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37095277095277096 [2023-08-04 08:33:38,432 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6794 transitions. [2023-08-04 08:33:38,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6794 transitions. [2023-08-04 08:33:38,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:33:38,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6794 transitions. [2023-08-04 08:33:38,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 617.6363636363636) internal successors, (6794), 11 states have internal predecessors, (6794), 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) [2023-08-04 08:33:38,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1665.0) internal successors, (19980), 12 states have internal predecessors, (19980), 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) [2023-08-04 08:33:38,453 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1665.0) internal successors, (19980), 12 states have internal predecessors, (19980), 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) [2023-08-04 08:33:38,453 INFO L175 Difference]: Start difference. First operand has 57 places, 108 transitions, 589 flow. Second operand 11 states and 6794 transitions. [2023-08-04 08:33:38,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 847 flow [2023-08-04 08:33:38,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 114 transitions, 713 flow, removed 49 selfloop flow, removed 3 redundant places. [2023-08-04 08:33:38,457 INFO L231 Difference]: Finished difference. Result has 65 places, 114 transitions, 647 flow [2023-08-04 08:33:38,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1665, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=647, PETRI_PLACES=65, PETRI_TRANSITIONS=114} [2023-08-04 08:33:38,458 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2023-08-04 08:33:38,458 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 114 transitions, 647 flow [2023-08-04 08:33:38,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 610.0833333333334) internal successors, (7321), 12 states have internal predecessors, (7321), 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) [2023-08-04 08:33:38,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:33:38,459 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:33:38,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 08:33:38,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 08:33:38,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:33:38,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:33:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1335907130, now seen corresponding path program 3 times [2023-08-04 08:33:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:33:38,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117671563] [2023-08-04 08:33:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:33:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-08-04 08:33:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:33:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117671563] [2023-08-04 08:33:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117671563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:33:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724802812] [2023-08-04 08:33:38,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 08:33:38,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:33:38,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:33:38,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:33:38,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 08:33:43,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-04 08:33:43,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 08:33:43,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 08:33:43,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:33:43,528 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-08-04 08:33:43,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:33:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2023-08-04 08:33:43,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724802812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:33:43,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:33:43,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-04 08:33:43,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130091969] [2023-08-04 08:33:43,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:33:43,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-04 08:33:43,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:33:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-04 08:33:43,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-08-04 08:33:44,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1665 [2023-08-04 08:33:44,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 114 transitions, 647 flow. Second operand has 20 states, 20 states have (on average 609.5) internal successors, (12190), 20 states have internal predecessors, (12190), 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) [2023-08-04 08:33:44,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:33:44,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1665 [2023-08-04 08:33:44,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:33:46,504 INFO L124 PetriNetUnfolderBase]: 1648/2215 cut-off events. [2023-08-04 08:33:46,504 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 08:33:46,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2215 events. 1648/2215 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6718 event pairs, 648 based on Foata normal form. 21/1218 useless extension candidates. Maximal degree in co-relation 4466. Up to 2095 conditions per place. [2023-08-04 08:33:46,509 INFO L140 encePairwiseOnDemand]: 1641/1665 looper letters, 45 selfloop transitions, 87 changer transitions 0/135 dead transitions. [2023-08-04 08:33:46,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 1037 flow [2023-08-04 08:33:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-04 08:33:46,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-04 08:33:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 8651 transitions. [2023-08-04 08:33:46,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711282711282711 [2023-08-04 08:33:46,523 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 8651 transitions. [2023-08-04 08:33:46,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 8651 transitions. [2023-08-04 08:33:46,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:33:46,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 8651 transitions. [2023-08-04 08:33:46,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 617.9285714285714) internal successors, (8651), 14 states have internal predecessors, (8651), 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) [2023-08-04 08:33:46,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1665.0) internal successors, (24975), 15 states have internal predecessors, (24975), 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) [2023-08-04 08:33:46,549 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1665.0) internal successors, (24975), 15 states have internal predecessors, (24975), 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) [2023-08-04 08:33:46,549 INFO L175 Difference]: Start difference. First operand has 65 places, 114 transitions, 647 flow. Second operand 14 states and 8651 transitions. [2023-08-04 08:33:46,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 1037 flow [2023-08-04 08:33:46,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 135 transitions, 929 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-04 08:33:46,553 INFO L231 Difference]: Finished difference. Result has 72 places, 135 transitions, 845 flow [2023-08-04 08:33:46,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1665, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=845, PETRI_PLACES=72, PETRI_TRANSITIONS=135} [2023-08-04 08:33:46,554 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2023-08-04 08:33:46,554 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 135 transitions, 845 flow [2023-08-04 08:33:46,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 609.5) internal successors, (12190), 20 states have internal predecessors, (12190), 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) [2023-08-04 08:33:46,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:33:46,555 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:33:46,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 08:33:46,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 08:33:46,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:33:46,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:33:46,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1414059130, now seen corresponding path program 4 times [2023-08-04 08:33:46,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:33:46,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950409643] [2023-08-04 08:33:46,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:46,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:33:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:33:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-08-04 08:33:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:33:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950409643] [2023-08-04 08:33:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950409643] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 08:33:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035869807] [2023-08-04 08:33:47,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 08:33:47,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 08:33:47,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 08:33:47,301 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 08:33:47,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 08:33:48,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 08:33:48,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 08:33:48,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 1184 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 08:33:48,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 08:33:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-08-04 08:33:48,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 08:33:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-08-04 08:33:48,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035869807] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 08:33:48,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 08:33:48,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-08-04 08:33:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944219495] [2023-08-04 08:33:48,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 08:33:48,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-04 08:33:48,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:33:48,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-04 08:33:48,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2023-08-04 08:33:50,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1665 [2023-08-04 08:33:50,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 135 transitions, 845 flow. Second operand has 29 states, 29 states have (on average 608.8965517241379) internal successors, (17658), 29 states have internal predecessors, (17658), 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) [2023-08-04 08:33:50,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:33:50,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1665 [2023-08-04 08:33:50,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 08:33:52,697 INFO L124 PetriNetUnfolderBase]: 1648/2218 cut-off events. [2023-08-04 08:33:52,698 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-04 08:33:52,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 2218 events. 1648/2218 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6718 event pairs, 648 based on Foata normal form. 3/1203 useless extension candidates. Maximal degree in co-relation 4472. Up to 2095 conditions per place. [2023-08-04 08:33:52,704 INFO L140 encePairwiseOnDemand]: 1641/1665 looper letters, 45 selfloop transitions, 90 changer transitions 0/138 dead transitions. [2023-08-04 08:33:52,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 138 transitions, 1139 flow [2023-08-04 08:33:52,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-04 08:33:52,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-04 08:33:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12278 transitions. [2023-08-04 08:33:52,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3687087087087087 [2023-08-04 08:33:52,722 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12278 transitions. [2023-08-04 08:33:52,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12278 transitions. [2023-08-04 08:33:52,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 08:33:52,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12278 transitions. [2023-08-04 08:33:52,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 613.9) internal successors, (12278), 20 states have internal predecessors, (12278), 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) [2023-08-04 08:33:52,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1665.0) internal successors, (34965), 21 states have internal predecessors, (34965), 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) [2023-08-04 08:33:52,759 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1665.0) internal successors, (34965), 21 states have internal predecessors, (34965), 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) [2023-08-04 08:33:52,759 INFO L175 Difference]: Start difference. First operand has 72 places, 135 transitions, 845 flow. Second operand 20 states and 12278 transitions. [2023-08-04 08:33:52,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 138 transitions, 1139 flow [2023-08-04 08:33:52,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 138 transitions, 1067 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-08-04 08:33:52,766 INFO L231 Difference]: Finished difference. Result has 91 places, 138 transitions, 989 flow [2023-08-04 08:33:52,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1665, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=989, PETRI_PLACES=91, PETRI_TRANSITIONS=138} [2023-08-04 08:33:52,767 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2023-08-04 08:33:52,767 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 138 transitions, 989 flow [2023-08-04 08:33:52,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 608.8965517241379) internal successors, (17658), 29 states have internal predecessors, (17658), 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) [2023-08-04 08:33:52,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:33:52,770 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:33:52,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-04 08:33:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-04 08:33:52,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 08:33:52,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:33:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1325971770, now seen corresponding path program 5 times [2023-08-04 08:33:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:33:52,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828824803] [2023-08-04 08:33:52,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:33:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:33:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 08:33:53,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 08:33:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 08:33:53,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 08:33:53,724 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 08:33:53,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 08:33:53,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 08:33:53,725 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 08:33:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 08:33:53,725 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-04 08:33:53,726 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 08:33:53,726 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 08:33:53,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 08:33:54,145 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 08:33:54,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 08:33:55,500 INFO L124 PetriNetUnfolderBase]: 1142/5766 cut-off events. [2023-08-04 08:33:55,501 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 08:33:55,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 5766 events. 1142/5766 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 46789 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3675. Up to 192 conditions per place. [2023-08-04 08:33:55,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 08:33:55,664 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 831 places, 951 transitions, 1992 flow [2023-08-04 08:33:55,664 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 08:33:55,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 831 places, 951 transitions, 1992 flow [2023-08-04 08:33:55,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 831 places, 951 transitions, 1992 flow [2023-08-04 08:33:55,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 08:33:57,023 INFO L124 PetriNetUnfolderBase]: 1142/5766 cut-off events. [2023-08-04 08:33:57,023 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 08:33:57,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 5766 events. 1142/5766 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 46789 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3675. Up to 192 conditions per place. [2023-08-04 08:33:57,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 148500 [2023-08-04 08:36:15,510 INFO L134 LiptonReduction]: Checked pairs total: 195823 [2023-08-04 08:36:15,510 INFO L136 LiptonReduction]: Total number of compositions: 1113 [2023-08-04 08:36:15,512 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 08:36:15,512 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=true, 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;@7ca1786e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 08:36:15,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 08:36:15,541 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 08:36:15,541 INFO L124 PetriNetUnfolderBase]: 24/67 cut-off events. [2023-08-04 08:36:15,541 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 08:36:15,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 08:36:15,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 08:36:15,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 08:36:15,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 08:36:15,542 INFO L85 PathProgramCache]: Analyzing trace with hash -397903733, now seen corresponding path program 1 times [2023-08-04 08:36:15,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 08:36:15,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320682902] [2023-08-04 08:36:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 08:36:15,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 08:36:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 08:36:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 08:36:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 08:36:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320682902] [2023-08-04 08:36:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320682902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 08:36:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 08:36:15,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 08:36:15,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657102871] [2023-08-04 08:36:15,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 08:36:15,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 08:36:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 08:36:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 08:36:15,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 08:36:15,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 757 out of 2064 [2023-08-04 08:36:15,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 119 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 763.3333333333334) internal successors, (2290), 3 states have internal predecessors, (2290), 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) [2023-08-04 08:36:15,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 08:36:15,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 757 of 2064 [2023-08-04 08:36:15,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 08:42:02,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 08:42:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 08:42:02,810 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 08:42:02,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 08:42:02,810 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (3states, 757/2064 universal loopers) in iteration 1,while PetriNetUnfolder was constructing finite prefix that currently has 710510 conditions, 350970 events (305185/350969 cut-off events. For 20834/20834 co-relation queries the response was YES. Maximal size of possible extension queue 11383. Compared 1427116 event pairs, 144828 based on Foata normal form. 0/167489 useless extension candidates. Maximal degree in co-relation 329500. Up to 346766 conditions per place.). [2023-08-04 08:42:02,810 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 08:42:02,810 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2023-08-04 08:42:02,811 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 08:42:02,811 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 08:42:02,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 08:42:02 BasicIcfg [2023-08-04 08:42:02,814 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 08:42:02,815 INFO L158 Benchmark]: Toolchain (without parser) took 742027.16ms. Allocated memory was 367.0MB in the beginning and 14.8GB in the end (delta: 14.5GB). Free memory was 304.7MB in the beginning and 11.6GB in the end (delta: -11.3GB). Peak memory consumption was 6.7GB. Max. memory is 16.0GB. [2023-08-04 08:42:02,815 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 367.0MB. Free memory is still 315.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 08:42:02,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.39ms. Allocated memory was 367.0MB in the beginning and 616.6MB in the end (delta: 249.6MB). Free memory was 304.4MB in the beginning and 574.9MB in the end (delta: -270.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-04 08:42:02,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 111.78ms. Allocated memory is still 616.6MB. Free memory was 574.9MB in the beginning and 564.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-04 08:42:02,815 INFO L158 Benchmark]: Boogie Preprocessor took 163.24ms. Allocated memory is still 616.6MB. Free memory was 564.4MB in the beginning and 552.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-04 08:42:02,816 INFO L158 Benchmark]: RCFGBuilder took 4191.30ms. Allocated memory was 616.6MB in the beginning and 979.4MB in the end (delta: 362.8MB). Free memory was 552.9MB in the beginning and 700.8MB in the end (delta: -147.9MB). Peak memory consumption was 244.2MB. Max. memory is 16.0GB. [2023-08-04 08:42:02,816 INFO L158 Benchmark]: TraceAbstraction took 737074.12ms. Allocated memory was 979.4MB in the beginning and 14.8GB in the end (delta: 13.9GB). Free memory was 699.8MB in the beginning and 11.6GB in the end (delta: -10.9GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-08-04 08:42:02,817 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 367.0MB. Free memory is still 315.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 478.39ms. Allocated memory was 367.0MB in the beginning and 616.6MB in the end (delta: 249.6MB). Free memory was 304.4MB in the beginning and 574.9MB in the end (delta: -270.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 111.78ms. Allocated memory is still 616.6MB. Free memory was 574.9MB in the beginning and 564.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Preprocessor took 163.24ms. Allocated memory is still 616.6MB. Free memory was 564.4MB in the beginning and 552.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * RCFGBuilder took 4191.30ms. Allocated memory was 616.6MB in the beginning and 979.4MB in the end (delta: 362.8MB). Free memory was 552.9MB in the beginning and 700.8MB in the end (delta: -147.9MB). Peak memory consumption was 244.2MB. Max. memory is 16.0GB. * TraceAbstraction took 737074.12ms. Allocated memory was 979.4MB in the beginning and 14.8GB in the end (delta: 13.9GB). Free memory was 699.8MB in the beginning and 11.6GB in the end (delta: -10.9GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 81.5s, 687 PlacesBefore, 57 PlacesAfterwards, 774 TransitionsBefore, 83 TransitionsAfterwards, 43560 CoEnabledTransitionPairs, 7 FixpointIterations, 447 TrivialSequentialCompositions, 211 ConcurrentSequentialCompositions, 101 TrivialYvCompositions, 64 ConcurrentYvCompositions, 61 ChoiceCompositions, 884 TotalNumberOfCompositions, 51985 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 47543, independent: 47453, independent conditional: 0, independent unconditional: 47453, dependent: 90, dependent conditional: 0, dependent unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 23723, independent: 23665, independent conditional: 0, independent unconditional: 23665, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 47543, independent: 23788, independent conditional: 0, independent unconditional: 23788, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 23723, unknown conditional: 0, unknown unconditional: 23723] , Statistics on independence cache: Total cache size (in pairs): 287, Positive cache size: 282, Positive conditional cache size: 0, Positive unconditional cache size: 282, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 76.9s, 687 PlacesBefore, 57 PlacesAfterwards, 774 TransitionsBefore, 83 TransitionsAfterwards, 43560 CoEnabledTransitionPairs, 8 FixpointIterations, 460 TrivialSequentialCompositions, 205 ConcurrentSequentialCompositions, 101 TrivialYvCompositions, 64 ConcurrentYvCompositions, 61 ChoiceCompositions, 891 TotalNumberOfCompositions, 51780 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 46849, independent: 46755, independent conditional: 0, independent unconditional: 46755, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 23465, independent: 23410, independent conditional: 0, independent unconditional: 23410, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 46849, independent: 23345, independent conditional: 0, independent unconditional: 23345, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 23465, unknown conditional: 0, unknown unconditional: 23465] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 261, Positive conditional cache size: 0, Positive unconditional cache size: 261, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 139.8s, 831 PlacesBefore, 78 PlacesAfterwards, 951 TransitionsBefore, 119 TransitionsAfterwards, 148500 CoEnabledTransitionPairs, 7 FixpointIterations, 450 TrivialSequentialCompositions, 375 ConcurrentSequentialCompositions, 106 TrivialYvCompositions, 103 ConcurrentYvCompositions, 79 ChoiceCompositions, 1113 TotalNumberOfCompositions, 195823 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 168206, independent: 168051, independent conditional: 0, independent unconditional: 168051, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 75320, independent: 75225, independent conditional: 0, independent unconditional: 75225, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 168206, independent: 92826, independent conditional: 0, independent unconditional: 92826, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 75320, unknown conditional: 0, unknown unconditional: 75320] , Statistics on independence cache: Total cache size (in pairs): 956, Positive cache size: 953, Positive conditional cache size: 0, Positive unconditional cache size: 953, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 341]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (3states, 757/2064 universal loopers) in iteration 1,while PetriNetUnfolder was constructing finite prefix that currently has 710510 conditions, 350970 events (305185/350969 cut-off events. For 20834/20834 co-relation queries the response was YES. Maximal size of possible extension queue 11383. Compared 1427116 event pairs, 144828 based on Foata normal form. 0/167489 useless extension candidates. Maximal degree in co-relation 329500. Up to 346766 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 819 locations, 4 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: 137.6s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 46.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 82.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1822 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 845 mSDsluCounter, 542 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 207 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3155 IncrementalHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 207 mSolverCounterUnsat, 450 mSDtfsCounter, 3155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 382 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=334occurred in iteration=9, InterpolantAutomatonStates: 35, 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: 0.6s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 665 NumberOfCodeBlocks, 665 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 702 ConstructedInterpolants, 0 QuantifiedInterpolants, 814 SizeOfPredicates, 2 NumberOfNonLiveVariables, 4458 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 18 InterpolantComputations, 9 PerfectInterpolantSequences, 207/216 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 957 locations, 4 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: 488.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 347.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 141.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 300 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 12 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 819 locations, 4 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: 109.8s, OverallIterations: 7, TraceHistogramMax: 13, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 77.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5280 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4176 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 745 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10508 IncrementalHoareTripleChecker+Invalid, 11253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 745 mSolverCounterUnsat, 300 mSDtfsCounter, 10508 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 495 SyntacticMatches, 17 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=989occurred in iteration=6, InterpolantAutomatonStates: 59, 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: 0.3s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 684 NumberOfCodeBlocks, 684 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 834 ConstructedInterpolants, 0 QuantifiedInterpolants, 1226 SizeOfPredicates, 5 NumberOfNonLiveVariables, 4300 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 15 InterpolantComputations, 2 PerfectInterpolantSequences, 1592/1905 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown