/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-symm.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:44:35,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:44:35,793 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:44:35,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:44:35,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:44:35,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:44:35,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:44:35,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:44:35,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:44:35,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:44:35,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:44:35,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:44:35,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:44:35,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:44:35,812 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:44:35,813 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:44:35,813 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:44:35,813 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:44:35,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:44:35,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:44:35,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:44:35,814 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:44:35,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:44:35,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:44:35,815 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:44:35,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:44:35,816 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:44:35,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:44:35,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:44:35,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:44:35,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:44:35,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:44:35,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:44:35,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:44:35,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:44:35,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:44:35,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:44:35,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:44:35,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:44:35,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:44:35,818 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:44:35,828 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:44:35,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:44:35,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:44:35,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:44:35,967 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:44:35,967 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:44:35,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-symm.wvr_bound2.c [2023-08-03 19:44:37,027 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:44:37,217 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:44:37,217 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-symm.wvr_bound2.c [2023-08-03 19:44:37,224 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6abe381fa/736e404f4f7947298e1e6e0604a576ad/FLAG52e0d9899 [2023-08-03 19:44:37,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6abe381fa/736e404f4f7947298e1e6e0604a576ad [2023-08-03 19:44:37,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:44:37,243 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:44:37,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:44:37,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:44:37,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:44:37,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a45ab20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37, skipping insertion in model container [2023-08-03 19:44:37,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,281 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:44:37,485 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-symm.wvr_bound2.c[12983,12996] [2023-08-03 19:44:37,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:44:37,500 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:44:37,575 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-symm.wvr_bound2.c[12983,12996] [2023-08-03 19:44:37,576 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:44:37,589 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:44:37,589 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 19:44:37,594 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:44:37,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37 WrapperNode [2023-08-03 19:44:37,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:44:37,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:44:37,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:44:37,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:44:37,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,625 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,688 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1578 [2023-08-03 19:44:37,689 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:44:37,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:44:37,690 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:44:37,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:44:37,696 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,748 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,759 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,780 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:44:37,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:44:37,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:44:37,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:44:37,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (1/1) ... [2023-08-03 19:44:37,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:44:37,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:44:37,814 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) [2023-08-03 19:44:37,816 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 [2023-08-03 19:44:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:44:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:44:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:44:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:44:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:44:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:44:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:44:37,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:44:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:44:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 19:44:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 19:44:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 19:44:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:44:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:44:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:44:37,851 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 19:44:38,012 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:44:38,014 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:44:39,062 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:44:40,158 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:44:40,158 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-03 19:44:40,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:44:40 BoogieIcfgContainer [2023-08-03 19:44:40,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:44:40,164 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:44:40,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:44:40,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:44:40,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:44:37" (1/3) ... [2023-08-03 19:44:40,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585acc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:44:40, skipping insertion in model container [2023-08-03 19:44:40,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:44:37" (2/3) ... [2023-08-03 19:44:40,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585acc43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:44:40, skipping insertion in model container [2023-08-03 19:44:40,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:44:40" (3/3) ... [2023-08-03 19:44:40,170 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-poker-hand-symm.wvr_bound2.c [2023-08-03 19:44:40,178 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:44:40,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:44:40,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:44:40,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:44:40,392 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 19:44:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 485 transitions, 992 flow [2023-08-03 19:44:40,596 INFO L124 PetriNetUnfolderBase]: 88/670 cut-off events. [2023-08-03 19:44:40,596 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:44:40,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 670 events. 88/670 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1948 event pairs, 0 based on Foata normal form. 0/572 useless extension candidates. Maximal degree in co-relation 465. Up to 14 conditions per place. [2023-08-03 19:44:40,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 429 places, 485 transitions, 992 flow [2023-08-03 19:44:40,609 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 485 transitions, 992 flow [2023-08-03 19:44:40,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:44:40,616 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 429 places, 485 transitions, 992 flow [2023-08-03 19:44:40,618 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 429 places, 485 transitions, 992 flow [2023-08-03 19:44:40,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 485 transitions, 992 flow [2023-08-03 19:44:40,702 INFO L124 PetriNetUnfolderBase]: 88/670 cut-off events. [2023-08-03 19:44:40,702 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 19:44:40,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 670 events. 88/670 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1948 event pairs, 0 based on Foata normal form. 0/572 useless extension candidates. Maximal degree in co-relation 465. Up to 14 conditions per place. [2023-08-03 19:44:40,714 INFO L119 LiptonReduction]: Number of co-enabled transitions 18150 [2023-08-03 19:45:23,313 INFO L134 LiptonReduction]: Checked pairs total: 20000 [2023-08-03 19:45:23,313 INFO L136 LiptonReduction]: Total number of compositions: 567 [2023-08-03 19:45:23,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:45:23,328 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;@337193af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:45:23,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:45:23,340 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:45:23,340 INFO L124 PetriNetUnfolderBase]: 12/34 cut-off events. [2023-08-03 19:45:23,340 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:45:23,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:23,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:23,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:23,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2000716820, now seen corresponding path program 1 times [2023-08-03 19:45:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:23,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633712982] [2023-08-03 19:45:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:23,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:45:23,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:23,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633712982] [2023-08-03 19:45:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633712982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:45:23,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:45:23,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:45:23,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164670838] [2023-08-03 19:45:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:45:23,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:45:23,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:23,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:45:23,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:45:23,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 1052 [2023-08-03 19:45:23,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 54 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:23,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:23,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 1052 [2023-08-03 19:45:23,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:24,780 INFO L124 PetriNetUnfolderBase]: 612/878 cut-off events. [2023-08-03 19:45:24,780 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 19:45:24,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1774 conditions, 878 events. 612/878 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2745 event pairs, 240 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 1432. Up to 848 conditions per place. [2023-08-03 19:45:24,785 INFO L140 encePairwiseOnDemand]: 1042/1052 looper letters, 45 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2023-08-03 19:45:24,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 57 transitions, 242 flow [2023-08-03 19:45:24,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:45:24,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:45:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1231 transitions. [2023-08-03 19:45:24,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39005069708491763 [2023-08-03 19:45:24,802 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1231 transitions. [2023-08-03 19:45:24,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1231 transitions. [2023-08-03 19:45:24,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:24,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1231 transitions. [2023-08-03 19:45:24,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 410.3333333333333) internal successors, (1231), 3 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:24,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1052.0) internal successors, (4208), 4 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:24,819 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1052.0) internal successors, (4208), 4 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:24,821 INFO L175 Difference]: Start difference. First operand has 39 places, 54 transitions, 130 flow. Second operand 3 states and 1231 transitions. [2023-08-03 19:45:24,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 57 transitions, 242 flow [2023-08-03 19:45:24,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:45:24,825 INFO L231 Difference]: Finished difference. Result has 41 places, 57 transitions, 170 flow [2023-08-03 19:45:24,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=41, PETRI_TRANSITIONS=57} [2023-08-03 19:45:24,828 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-03 19:45:24,829 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 57 transitions, 170 flow [2023-08-03 19:45:24,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 395.3333333333333) internal successors, (1186), 3 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:24,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:24,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:24,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:45:24,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:24,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash -758489647, now seen corresponding path program 1 times [2023-08-03 19:45:24,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:24,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275479705] [2023-08-03 19:45:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:24,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:45:24,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:24,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275479705] [2023-08-03 19:45:24,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275479705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:45:24,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:45:24,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:45:24,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456710915] [2023-08-03 19:45:24,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:45:24,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:45:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:45:24,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:45:24,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 1052 [2023-08-03 19:45:24,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 57 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:24,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:24,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 1052 [2023-08-03 19:45:24,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:25,673 INFO L124 PetriNetUnfolderBase]: 589/840 cut-off events. [2023-08-03 19:45:25,673 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-08-03 19:45:25,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 840 events. 589/840 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2421 event pairs, 105 based on Foata normal form. 0/430 useless extension candidates. Maximal degree in co-relation 1664. Up to 805 conditions per place. [2023-08-03 19:45:25,676 INFO L140 encePairwiseOnDemand]: 1049/1052 looper letters, 59 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-03 19:45:25,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 308 flow [2023-08-03 19:45:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:45:25,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:45:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1315 transitions. [2023-08-03 19:45:25,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-03 19:45:25,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1315 transitions. [2023-08-03 19:45:25,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1315 transitions. [2023-08-03 19:45:25,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:25,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1315 transitions. [2023-08-03 19:45:25,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:25,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1052.0) internal successors, (4208), 4 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:25,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1052.0) internal successors, (4208), 4 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:25,725 INFO L175 Difference]: Start difference. First operand has 41 places, 57 transitions, 170 flow. Second operand 3 states and 1315 transitions. [2023-08-03 19:45:25,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 308 flow [2023-08-03 19:45:25,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:45:25,727 INFO L231 Difference]: Finished difference. Result has 43 places, 57 transitions, 170 flow [2023-08-03 19:45:25,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=43, PETRI_TRANSITIONS=57} [2023-08-03 19:45:25,728 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-03 19:45:25,728 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 57 transitions, 170 flow [2023-08-03 19:45:25,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 424.6666666666667) internal successors, (1274), 3 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:25,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:25,729 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:25,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:45:25,729 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:25,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:25,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1929897217, now seen corresponding path program 1 times [2023-08-03 19:45:25,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:25,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303687974] [2023-08-03 19:45:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:25,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 19:45:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303687974] [2023-08-03 19:45:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303687974] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:45:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173088281] [2023-08-03 19:45:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:25,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:25,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:45:25,873 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) [2023-08-03 19:45:25,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:45:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:26,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:45:26,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:45:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 19:45:26,378 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:45:26,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173088281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:45:26,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:45:26,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:45:26,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836469746] [2023-08-03 19:45:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:45:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:45:26,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:45:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:45:26,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 1052 [2023-08-03 19:45:26,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 57 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:26,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:26,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 1052 [2023-08-03 19:45:26,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:27,215 INFO L124 PetriNetUnfolderBase]: 589/844 cut-off events. [2023-08-03 19:45:27,215 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-08-03 19:45:27,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 844 events. 589/844 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2440 event pairs, 234 based on Foata normal form. 2/438 useless extension candidates. Maximal degree in co-relation 1675. Up to 815 conditions per place. [2023-08-03 19:45:27,219 INFO L140 encePairwiseOnDemand]: 1042/1052 looper letters, 49 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2023-08-03 19:45:27,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 61 transitions, 292 flow [2023-08-03 19:45:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:45:27,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:45:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1230 transitions. [2023-08-03 19:45:27,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897338403041825 [2023-08-03 19:45:27,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1230 transitions. [2023-08-03 19:45:27,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1230 transitions. [2023-08-03 19:45:27,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:27,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1230 transitions. [2023-08-03 19:45:27,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 410.0) internal successors, (1230), 3 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:27,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1052.0) internal successors, (4208), 4 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:27,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1052.0) internal successors, (4208), 4 states have internal predecessors, (4208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:27,229 INFO L175 Difference]: Start difference. First operand has 43 places, 57 transitions, 170 flow. Second operand 3 states and 1230 transitions. [2023-08-03 19:45:27,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 61 transitions, 292 flow [2023-08-03 19:45:27,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 61 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 19:45:27,231 INFO L231 Difference]: Finished difference. Result has 44 places, 61 transitions, 210 flow [2023-08-03 19:45:27,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=44, PETRI_TRANSITIONS=61} [2023-08-03 19:45:27,231 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-03 19:45:27,232 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 61 transitions, 210 flow [2023-08-03 19:45:27,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 396.3333333333333) internal successors, (1189), 3 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:27,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:27,232 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] [2023-08-03 19:45:27,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:45:27,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:27,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:27,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:27,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1977491563, now seen corresponding path program 1 times [2023-08-03 19:45:27,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:27,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54061353] [2023-08-03 19:45:27,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:27,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:45:27,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54061353] [2023-08-03 19:45:27,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54061353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:45:27,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161304482] [2023-08-03 19:45:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:27,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:45:27,561 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) [2023-08-03 19:45:27,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:45:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:28,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:45:28,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:45:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:45:28,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:45:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-08-03 19:45:28,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161304482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:45:28,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:45:28,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-03 19:45:28,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909901922] [2023-08-03 19:45:28,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:45:28,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:45:28,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:45:28,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-03 19:45:28,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 1052 [2023-08-03 19:45:28,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 61 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 379.0) internal successors, (3032), 8 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:28,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:28,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 1052 [2023-08-03 19:45:28,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:29,154 INFO L124 PetriNetUnfolderBase]: 589/868 cut-off events. [2023-08-03 19:45:29,155 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-03 19:45:29,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 868 events. 589/868 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2440 event pairs, 234 based on Foata normal form. 15/478 useless extension candidates. Maximal degree in co-relation 1696. Up to 811 conditions per place. [2023-08-03 19:45:29,158 INFO L140 encePairwiseOnDemand]: 1035/1052 looper letters, 41 selfloop transitions, 40 changer transitions 0/85 dead transitions. [2023-08-03 19:45:29,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 85 transitions, 468 flow [2023-08-03 19:45:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:45:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:45:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3105 transitions. [2023-08-03 19:45:29,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36894011406844107 [2023-08-03 19:45:29,164 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3105 transitions. [2023-08-03 19:45:29,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3105 transitions. [2023-08-03 19:45:29,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:29,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3105 transitions. [2023-08-03 19:45:29,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 388.125) internal successors, (3105), 8 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:29,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1052.0) internal successors, (9468), 9 states have internal predecessors, (9468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:29,182 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1052.0) internal successors, (9468), 9 states have internal predecessors, (9468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:29,184 INFO L175 Difference]: Start difference. First operand has 44 places, 61 transitions, 210 flow. Second operand 8 states and 3105 transitions. [2023-08-03 19:45:29,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 85 transitions, 468 flow [2023-08-03 19:45:29,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 85 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:45:29,192 INFO L231 Difference]: Finished difference. Result has 53 places, 85 transitions, 440 flow [2023-08-03 19:45:29,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=440, PETRI_PLACES=53, PETRI_TRANSITIONS=85} [2023-08-03 19:45:29,193 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 14 predicate places. [2023-08-03 19:45:29,193 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 85 transitions, 440 flow [2023-08-03 19:45:29,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 379.0) internal successors, (3032), 8 states have internal predecessors, (3032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:29,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:29,194 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:29,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 19:45:29,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:45:29,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:29,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:29,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1436726620, now seen corresponding path program 2 times [2023-08-03 19:45:29,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:29,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279874631] [2023-08-03 19:45:29,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:29,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-08-03 19:45:29,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279874631] [2023-08-03 19:45:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279874631] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:45:29,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190214827] [2023-08-03 19:45:29,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:45:29,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:29,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:45:29,568 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) [2023-08-03 19:45:29,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 19:45:30,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:45:30,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:45:30,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:45:30,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:45:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-08-03 19:45:30,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:45:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-08-03 19:45:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190214827] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:45:30,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:45:30,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-03 19:45:30,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720135761] [2023-08-03 19:45:30,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:45:30,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 19:45:30,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:30,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 19:45:30,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2023-08-03 19:45:30,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 1052 [2023-08-03 19:45:30,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 85 transitions, 440 flow. Second operand has 12 states, 12 states have (on average 377.4166666666667) internal successors, (4529), 12 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:30,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:30,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 1052 [2023-08-03 19:45:30,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:31,641 INFO L124 PetriNetUnfolderBase]: 589/872 cut-off events. [2023-08-03 19:45:31,641 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-03 19:45:31,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 872 events. 589/872 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2440 event pairs, 234 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 1722. Up to 811 conditions per place. [2023-08-03 19:45:31,644 INFO L140 encePairwiseOnDemand]: 1035/1052 looper letters, 41 selfloop transitions, 44 changer transitions 0/89 dead transitions. [2023-08-03 19:45:31,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 634 flow [2023-08-03 19:45:31,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 19:45:31,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 19:45:31,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4214 transitions. [2023-08-03 19:45:31,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36415485655029384 [2023-08-03 19:45:31,659 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4214 transitions. [2023-08-03 19:45:31,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4214 transitions. [2023-08-03 19:45:31,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:31,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4214 transitions. [2023-08-03 19:45:31,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 383.09090909090907) internal successors, (4214), 11 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1052.0) internal successors, (12624), 12 states have internal predecessors, (12624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,676 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1052.0) internal successors, (12624), 12 states have internal predecessors, (12624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,676 INFO L175 Difference]: Start difference. First operand has 53 places, 85 transitions, 440 flow. Second operand 11 states and 4214 transitions. [2023-08-03 19:45:31,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 634 flow [2023-08-03 19:45:31,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 89 transitions, 552 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-03 19:45:31,679 INFO L231 Difference]: Finished difference. Result has 61 places, 89 transitions, 488 flow [2023-08-03 19:45:31,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=488, PETRI_PLACES=61, PETRI_TRANSITIONS=89} [2023-08-03 19:45:31,679 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 22 predicate places. [2023-08-03 19:45:31,679 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 89 transitions, 488 flow [2023-08-03 19:45:31,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 377.4166666666667) internal successors, (4529), 12 states have internal predecessors, (4529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:31,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:31,681 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:31,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 19:45:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:31,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:31,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1923508786, now seen corresponding path program 3 times [2023-08-03 19:45:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:31,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006497905] [2023-08-03 19:45:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-08-03 19:45:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006497905] [2023-08-03 19:45:32,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006497905] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:45:32,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483778589] [2023-08-03 19:45:32,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 19:45:32,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:32,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:45:32,098 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) [2023-08-03 19:45:32,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 19:45:34,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-03 19:45:34,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:45:34,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 19:45:34,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:45:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-08-03 19:45:34,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:45:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-08-03 19:45:34,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483778589] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:45:34,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:45:34,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-03 19:45:34,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604193230] [2023-08-03 19:45:34,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:45:34,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-03 19:45:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:34,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-03 19:45:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-08-03 19:45:35,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 1052 [2023-08-03 19:45:35,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 89 transitions, 488 flow. Second operand has 20 states, 20 states have (on average 376.9) internal successors, (7538), 20 states have internal predecessors, (7538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:35,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:35,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 1052 [2023-08-03 19:45:35,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:36,100 INFO L124 PetriNetUnfolderBase]: 589/886 cut-off events. [2023-08-03 19:45:36,101 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-03 19:45:36,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1988 conditions, 886 events. 589/886 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2440 event pairs, 234 based on Foata normal form. 14/498 useless extension candidates. Maximal degree in co-relation 1705. Up to 811 conditions per place. [2023-08-03 19:45:36,105 INFO L140 encePairwiseOnDemand]: 1035/1052 looper letters, 41 selfloop transitions, 58 changer transitions 0/103 dead transitions. [2023-08-03 19:45:36,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 103 transitions, 798 flow [2023-08-03 19:45:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-03 19:45:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-03 19:45:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 5363 transitions. [2023-08-03 19:45:36,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641363389462249 [2023-08-03 19:45:36,114 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 5363 transitions. [2023-08-03 19:45:36,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 5363 transitions. [2023-08-03 19:45:36,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:36,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 5363 transitions. [2023-08-03 19:45:36,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 383.07142857142856) internal successors, (5363), 14 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:36,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1052.0) internal successors, (15780), 15 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:36,133 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1052.0) internal successors, (15780), 15 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:36,134 INFO L175 Difference]: Start difference. First operand has 61 places, 89 transitions, 488 flow. Second operand 14 states and 5363 transitions. [2023-08-03 19:45:36,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 103 transitions, 798 flow [2023-08-03 19:45:36,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 718 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-03 19:45:36,140 INFO L231 Difference]: Finished difference. Result has 75 places, 103 transitions, 734 flow [2023-08-03 19:45:36,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=734, PETRI_PLACES=75, PETRI_TRANSITIONS=103} [2023-08-03 19:45:36,142 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2023-08-03 19:45:36,142 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 103 transitions, 734 flow [2023-08-03 19:45:36,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 376.9) internal successors, (7538), 20 states have internal predecessors, (7538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:36,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:36,143 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:36,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 19:45:36,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:36,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:36,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash -533283021, now seen corresponding path program 4 times [2023-08-03 19:45:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447677605] [2023-08-03 19:45:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:45:36,771 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-08-03 19:45:36,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:45:36,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447677605] [2023-08-03 19:45:36,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447677605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:45:36,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302093439] [2023-08-03 19:45:36,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 19:45:36,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:36,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:45:36,773 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) [2023-08-03 19:45:36,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 19:45:37,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 19:45:37,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:45:37,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:45:37,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:45:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-08-03 19:45:37,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:45:37,619 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-08-03 19:45:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302093439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:45:37,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:45:37,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-08-03 19:45:37,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274620762] [2023-08-03 19:45:37,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:45:37,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-03 19:45:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:45:37,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-03 19:45:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2023-08-03 19:45:38,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 1052 [2023-08-03 19:45:38,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 103 transitions, 734 flow. Second operand has 29 states, 29 states have (on average 376.62068965517244) internal successors, (10922), 29 states have internal predecessors, (10922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:38,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:45:38,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 1052 [2023-08-03 19:45:38,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:45:39,689 INFO L124 PetriNetUnfolderBase]: 589/888 cut-off events. [2023-08-03 19:45:39,689 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2023-08-03 19:45:39,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 888 events. 589/888 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2460 event pairs, 234 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 1733. Up to 811 conditions per place. [2023-08-03 19:45:39,693 INFO L140 encePairwiseOnDemand]: 1035/1052 looper letters, 41 selfloop transitions, 60 changer transitions 0/105 dead transitions. [2023-08-03 19:45:39,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 105 transitions, 956 flow [2023-08-03 19:45:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 19:45:39,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 19:45:39,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7603 transitions. [2023-08-03 19:45:39,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36135931558935364 [2023-08-03 19:45:39,704 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7603 transitions. [2023-08-03 19:45:39,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7603 transitions. [2023-08-03 19:45:39,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:45:39,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7603 transitions. [2023-08-03 19:45:39,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 380.15) internal successors, (7603), 20 states have internal predecessors, (7603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:39,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1052.0) internal successors, (22092), 21 states have internal predecessors, (22092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:39,731 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1052.0) internal successors, (22092), 21 states have internal predecessors, (22092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:39,731 INFO L175 Difference]: Start difference. First operand has 75 places, 103 transitions, 734 flow. Second operand 20 states and 7603 transitions. [2023-08-03 19:45:39,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 105 transitions, 956 flow [2023-08-03 19:45:39,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 105 transitions, 884 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-03 19:45:39,735 INFO L231 Difference]: Finished difference. Result has 94 places, 105 transitions, 812 flow [2023-08-03 19:45:39,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1052, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=812, PETRI_PLACES=94, PETRI_TRANSITIONS=105} [2023-08-03 19:45:39,737 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2023-08-03 19:45:39,737 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 105 transitions, 812 flow [2023-08-03 19:45:39,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 376.62068965517244) internal successors, (10922), 29 states have internal predecessors, (10922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:45:39,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:45:39,740 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:45:39,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 19:45:39,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:45:39,947 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:45:39,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:45:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2064134990, now seen corresponding path program 5 times [2023-08-03 19:45:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:45:39,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336699348] [2023-08-03 19:45:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:45:39,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:45:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:45:40,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:45:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:45:40,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:45:40,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:45:40,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 19:45:40,268 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 19:45:40,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:45:40,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 19:45:40,269 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-08-03 19:45:40,271 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:45:40,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:45:40,530 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 19:45:40,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 601 transitions, 1250 flow [2023-08-03 19:45:40,748 INFO L124 PetriNetUnfolderBase]: 229/1470 cut-off events. [2023-08-03 19:45:40,748 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:45:40,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 1470 events. 229/1470 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7492 event pairs, 1 based on Foata normal form. 0/1238 useless extension candidates. Maximal degree in co-relation 996. Up to 32 conditions per place. [2023-08-03 19:45:40,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 601 transitions, 1250 flow [2023-08-03 19:45:40,775 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 525 places, 601 transitions, 1250 flow [2023-08-03 19:45:40,775 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:45:40,775 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 525 places, 601 transitions, 1250 flow [2023-08-03 19:45:40,775 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 525 places, 601 transitions, 1250 flow [2023-08-03 19:45:40,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 601 transitions, 1250 flow [2023-08-03 19:45:41,043 INFO L124 PetriNetUnfolderBase]: 229/1470 cut-off events. [2023-08-03 19:45:41,044 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 19:45:41,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 1470 events. 229/1470 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 7492 event pairs, 1 based on Foata normal form. 0/1238 useless extension candidates. Maximal degree in co-relation 996. Up to 32 conditions per place. [2023-08-03 19:45:41,097 INFO L119 LiptonReduction]: Number of co-enabled transitions 62700 [2023-08-03 19:46:51,001 INFO L134 LiptonReduction]: Checked pairs total: 77338 [2023-08-03 19:46:51,002 INFO L136 LiptonReduction]: Total number of compositions: 716 [2023-08-03 19:46:51,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:46:51,011 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;@337193af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:46:51,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 19:46:51,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:46:51,022 INFO L124 PetriNetUnfolderBase]: 12/35 cut-off events. [2023-08-03 19:46:51,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:46:51,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:46:51,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:46:51,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:46:51,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:46:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1274755449, now seen corresponding path program 1 times [2023-08-03 19:46:51,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:46:51,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267073983] [2023-08-03 19:46:51,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:46:51,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:46:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:46:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:46:51,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:46:51,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267073983] [2023-08-03 19:46:51,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267073983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:46:51,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:46:51,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:46:51,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486534304] [2023-08-03 19:46:51,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:46:51,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:46:51,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:46:51,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:46:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:46:51,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 475 out of 1317 [2023-08-03 19:46:51,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 76 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 479.3333333333333) internal successors, (1438), 3 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:46:51,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:46:51,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 475 of 1317 [2023-08-03 19:46:51,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:23,136 INFO L124 PetriNetUnfolderBase]: 29474/35538 cut-off events. [2023-08-03 19:47:23,137 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2023-08-03 19:47:23,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71645 conditions, 35538 events. 29474/35538 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 129896 event pairs, 12106 based on Foata normal form. 0/17234 useless extension candidates. Maximal degree in co-relation 17948. Up to 34710 conditions per place. [2023-08-03 19:47:23,257 INFO L140 encePairwiseOnDemand]: 1307/1317 looper letters, 65 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2023-08-03 19:47:23,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 352 flow [2023-08-03 19:47:23,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:47:23,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:47:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1503 transitions. [2023-08-03 19:47:23,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3804100227790433 [2023-08-03 19:47:23,260 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1503 transitions. [2023-08-03 19:47:23,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1503 transitions. [2023-08-03 19:47:23,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:23,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1503 transitions. [2023-08-03 19:47:23,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 501.0) internal successors, (1503), 3 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:23,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:23,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:23,265 INFO L175 Difference]: Start difference. First operand has 53 places, 76 transitions, 200 flow. Second operand 3 states and 1503 transitions. [2023-08-03 19:47:23,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 352 flow [2023-08-03 19:47:23,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 79 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:47:23,269 INFO L231 Difference]: Finished difference. Result has 55 places, 79 transitions, 240 flow [2023-08-03 19:47:23,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=55, PETRI_TRANSITIONS=79} [2023-08-03 19:47:23,271 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-03 19:47:23,271 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 79 transitions, 240 flow [2023-08-03 19:47:23,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 479.3333333333333) internal successors, (1438), 3 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:23,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:23,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:47:23,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 19:47:23,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:47:23,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1244817243, now seen corresponding path program 1 times [2023-08-03 19:47:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:23,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285808206] [2023-08-03 19:47:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-03 19:47:23,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:23,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285808206] [2023-08-03 19:47:23,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285808206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:23,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:47:23,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:47:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915871474] [2023-08-03 19:47:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:23,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:23,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:47:23,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 1317 [2023-08-03 19:47:23,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 79 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 508.6666666666667) internal successors, (1526), 3 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:23,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:23,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 1317 [2023-08-03 19:47:23,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:47:54,580 INFO L124 PetriNetUnfolderBase]: 29279/35251 cut-off events. [2023-08-03 19:47:54,580 INFO L125 PetriNetUnfolderBase]: For 2171/2171 co-relation queries the response was YES. [2023-08-03 19:47:54,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71194 conditions, 35251 events. 29279/35251 cut-off events. For 2171/2171 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 127853 event pairs, 8831 based on Foata normal form. 0/17066 useless extension candidates. Maximal degree in co-relation 71141. Up to 34447 conditions per place. [2023-08-03 19:47:54,688 INFO L140 encePairwiseOnDemand]: 1314/1317 looper letters, 80 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-03 19:47:54,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 422 flow [2023-08-03 19:47:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:47:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:47:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1588 transitions. [2023-08-03 19:47:54,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40192356365477094 [2023-08-03 19:47:54,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1588 transitions. [2023-08-03 19:47:54,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1588 transitions. [2023-08-03 19:47:54,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:47:54,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1588 transitions. [2023-08-03 19:47:54,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 529.3333333333334) internal successors, (1588), 3 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,696 INFO L175 Difference]: Start difference. First operand has 55 places, 79 transitions, 240 flow. Second operand 3 states and 1588 transitions. [2023-08-03 19:47:54,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 422 flow [2023-08-03 19:47:54,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 414 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:47:54,698 INFO L231 Difference]: Finished difference. Result has 57 places, 80 transitions, 244 flow [2023-08-03 19:47:54,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=57, PETRI_TRANSITIONS=80} [2023-08-03 19:47:54,699 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-08-03 19:47:54,699 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 80 transitions, 244 flow [2023-08-03 19:47:54,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 508.6666666666667) internal successors, (1526), 3 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:47:54,700 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] [2023-08-03 19:47:54,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 19:47:54,700 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:47:54,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:47:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2064950398, now seen corresponding path program 1 times [2023-08-03 19:47:54,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:47:54,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573095067] [2023-08-03 19:47:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:47:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:47:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:47:54,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 19:47:54,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:47:54,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573095067] [2023-08-03 19:47:54,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573095067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:47:54,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:47:54,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:47:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185093053] [2023-08-03 19:47:54,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:47:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:47:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:47:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:47:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:47:54,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 1317 [2023-08-03 19:47:54,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 80 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 509.6666666666667) internal successors, (1529), 3 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:47:54,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:47:54,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 1317 [2023-08-03 19:47:54,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:25,929 INFO L124 PetriNetUnfolderBase]: 29259/35363 cut-off events. [2023-08-03 19:48:25,929 INFO L125 PetriNetUnfolderBase]: For 1546/1546 co-relation queries the response was YES. [2023-08-03 19:48:25,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71328 conditions, 35363 events. 29259/35363 cut-off events. For 1546/1546 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 129214 event pairs, 8806 based on Foata normal form. 0/17192 useless extension candidates. Maximal degree in co-relation 71272. Up to 33859 conditions per place. [2023-08-03 19:48:26,035 INFO L140 encePairwiseOnDemand]: 1314/1317 looper letters, 95 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2023-08-03 19:48:26,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 103 transitions, 484 flow [2023-08-03 19:48:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:26,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1602 transitions. [2023-08-03 19:48:26,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054669703872437 [2023-08-03 19:48:26,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1602 transitions. [2023-08-03 19:48:26,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1602 transitions. [2023-08-03 19:48:26,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:26,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1602 transitions. [2023-08-03 19:48:26,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 534.0) internal successors, (1602), 3 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,042 INFO L175 Difference]: Start difference. First operand has 57 places, 80 transitions, 244 flow. Second operand 3 states and 1602 transitions. [2023-08-03 19:48:26,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 103 transitions, 484 flow [2023-08-03 19:48:26,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:26,044 INFO L231 Difference]: Finished difference. Result has 59 places, 81 transitions, 254 flow [2023-08-03 19:48:26,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=59, PETRI_TRANSITIONS=81} [2023-08-03 19:48:26,045 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-08-03 19:48:26,045 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 81 transitions, 254 flow [2023-08-03 19:48:26,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 509.6666666666667) internal successors, (1529), 3 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:26,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:26,045 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:26,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 19:48:26,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:48:26,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:26,046 INFO L85 PathProgramCache]: Analyzing trace with hash 14688391, now seen corresponding path program 1 times [2023-08-03 19:48:26,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:26,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706742986] [2023-08-03 19:48:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:26,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 19:48:26,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:26,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706742986] [2023-08-03 19:48:26,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706742986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:26,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868318527] [2023-08-03 19:48:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:26,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:26,122 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) [2023-08-03 19:48:26,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 19:48:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:26,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:48:26,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 19:48:27,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:48:27,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868318527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:48:27,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:48:27,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:48:27,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176940521] [2023-08-03 19:48:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:48:27,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:48:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:48:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:48:27,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 475 out of 1317 [2023-08-03 19:48:27,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 81 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 480.6666666666667) internal successors, (1442), 3 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:27,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:27,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 475 of 1317 [2023-08-03 19:48:27,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:48:57,203 INFO L124 PetriNetUnfolderBase]: 29259/35367 cut-off events. [2023-08-03 19:48:57,204 INFO L125 PetriNetUnfolderBase]: For 2457/2457 co-relation queries the response was YES. [2023-08-03 19:48:57,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72233 conditions, 35367 events. 29259/35367 cut-off events. For 2457/2457 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 129372 event pairs, 12049 based on Foata normal form. 2/17598 useless extension candidates. Maximal degree in co-relation 72172. Up to 34437 conditions per place. [2023-08-03 19:48:57,309 INFO L140 encePairwiseOnDemand]: 1307/1317 looper letters, 71 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2023-08-03 19:48:57,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 420 flow [2023-08-03 19:48:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:48:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:48:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1502 transitions. [2023-08-03 19:48:57,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38015692229815234 [2023-08-03 19:48:57,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1502 transitions. [2023-08-03 19:48:57,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1502 transitions. [2023-08-03 19:48:57,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:48:57,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1502 transitions. [2023-08-03 19:48:57,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 500.6666666666667) internal successors, (1502), 3 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:57,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:57,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:57,316 INFO L175 Difference]: Start difference. First operand has 59 places, 81 transitions, 254 flow. Second operand 3 states and 1502 transitions. [2023-08-03 19:48:57,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 420 flow [2023-08-03 19:48:57,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 85 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:48:57,319 INFO L231 Difference]: Finished difference. Result has 61 places, 85 transitions, 296 flow [2023-08-03 19:48:57,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=296, PETRI_PLACES=61, PETRI_TRANSITIONS=85} [2023-08-03 19:48:57,319 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-08-03 19:48:57,319 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 85 transitions, 296 flow [2023-08-03 19:48:57,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 480.6666666666667) internal successors, (1442), 3 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:57,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:48:57,320 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:48:57,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 19:48:57,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:57,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:48:57,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:48:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash -622901822, now seen corresponding path program 1 times [2023-08-03 19:48:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:48:57,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40336925] [2023-08-03 19:48:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:57,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:48:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:57,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:48:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40336925] [2023-08-03 19:48:57,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40336925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:48:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243715469] [2023-08-03 19:48:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:48:57,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:48:57,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:48:57,669 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) [2023-08-03 19:48:57,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 19:48:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:48:58,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-03 19:48:58,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:48:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:58,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:48:58,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-08-03 19:48:58,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243715469] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:48:58,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:48:58,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-03 19:48:58,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815970832] [2023-08-03 19:48:58,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:48:58,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 19:48:58,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:48:58,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 19:48:58,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-03 19:48:58,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 1317 [2023-08-03 19:48:58,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 85 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 462.875) internal successors, (3703), 8 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:48:58,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:48:58,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 1317 [2023-08-03 19:48:58,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:49:29,570 INFO L124 PetriNetUnfolderBase]: 29259/35391 cut-off events. [2023-08-03 19:49:29,570 INFO L125 PetriNetUnfolderBase]: For 2411/2411 co-relation queries the response was YES. [2023-08-03 19:49:29,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72244 conditions, 35391 events. 29259/35391 cut-off events. For 2411/2411 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 129366 event pairs, 12049 based on Foata normal form. 15/17638 useless extension candidates. Maximal degree in co-relation 72118. Up to 34433 conditions per place. [2023-08-03 19:49:29,682 INFO L140 encePairwiseOnDemand]: 1300/1317 looper letters, 63 selfloop transitions, 40 changer transitions 0/109 dead transitions. [2023-08-03 19:49:29,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 598 flow [2023-08-03 19:49:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-03 19:49:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-03 19:49:29,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3797 transitions. [2023-08-03 19:49:29,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36038344722854976 [2023-08-03 19:49:29,688 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3797 transitions. [2023-08-03 19:49:29,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3797 transitions. [2023-08-03 19:49:29,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:49:29,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3797 transitions. [2023-08-03 19:49:29,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 474.625) internal successors, (3797), 8 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:29,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1317.0) internal successors, (11853), 9 states have internal predecessors, (11853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:29,697 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1317.0) internal successors, (11853), 9 states have internal predecessors, (11853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:29,697 INFO L175 Difference]: Start difference. First operand has 61 places, 85 transitions, 296 flow. Second operand 8 states and 3797 transitions. [2023-08-03 19:49:29,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 598 flow [2023-08-03 19:49:29,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 109 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:49:29,700 INFO L231 Difference]: Finished difference. Result has 70 places, 109 transitions, 526 flow [2023-08-03 19:49:29,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=526, PETRI_PLACES=70, PETRI_TRANSITIONS=109} [2023-08-03 19:49:29,700 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2023-08-03 19:49:29,701 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 109 transitions, 526 flow [2023-08-03 19:49:29,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 462.875) internal successors, (3703), 8 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:29,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:49:29,701 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:49:29,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 19:49:29,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:29,909 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:49:29,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:49:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash -593293837, now seen corresponding path program 2 times [2023-08-03 19:49:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:49:29,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695951339] [2023-08-03 19:49:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:49:29,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:49:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:49:30,053 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-08-03 19:49:30,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:49:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695951339] [2023-08-03 19:49:30,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695951339] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:49:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727271814] [2023-08-03 19:49:30,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:49:30,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:49:30,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:49:30,055 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) [2023-08-03 19:49:30,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 19:49:31,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:49:31,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:49:31,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 19:49:31,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:49:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-08-03 19:49:31,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:49:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-08-03 19:49:31,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727271814] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:49:31,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:49:31,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-03 19:49:31,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376296020] [2023-08-03 19:49:31,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:49:31,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 19:49:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:49:31,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 19:49:31,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2023-08-03 19:49:31,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 1317 [2023-08-03 19:49:31,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 109 transitions, 526 flow. Second operand has 13 states, 13 states have (on average 461.46153846153845) internal successors, (5999), 13 states have internal predecessors, (5999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:49:31,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:49:31,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 1317 [2023-08-03 19:49:31,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:02,633 INFO L124 PetriNetUnfolderBase]: 29259/35395 cut-off events. [2023-08-03 19:50:02,633 INFO L125 PetriNetUnfolderBase]: For 2416/2416 co-relation queries the response was YES. [2023-08-03 19:50:02,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72330 conditions, 35395 events. 29259/35395 cut-off events. For 2416/2416 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 129371 event pairs, 12049 based on Foata normal form. 2/17627 useless extension candidates. Maximal degree in co-relation 72144. Up to 34433 conditions per place. [2023-08-03 19:50:02,746 INFO L140 encePairwiseOnDemand]: 1300/1317 looper letters, 63 selfloop transitions, 44 changer transitions 0/113 dead transitions. [2023-08-03 19:50:02,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 113 transitions, 764 flow [2023-08-03 19:50:02,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 19:50:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 19:50:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 5158 transitions. [2023-08-03 19:50:02,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560433492096362 [2023-08-03 19:50:02,752 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 5158 transitions. [2023-08-03 19:50:02,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 5158 transitions. [2023-08-03 19:50:02,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:02,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 5158 transitions. [2023-08-03 19:50:02,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 468.90909090909093) internal successors, (5158), 11 states have internal predecessors, (5158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1317.0) internal successors, (15804), 12 states have internal predecessors, (15804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,764 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1317.0) internal successors, (15804), 12 states have internal predecessors, (15804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,764 INFO L175 Difference]: Start difference. First operand has 70 places, 109 transitions, 526 flow. Second operand 11 states and 5158 transitions. [2023-08-03 19:50:02,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 113 transitions, 764 flow [2023-08-03 19:50:02,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 682 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-03 19:50:02,767 INFO L231 Difference]: Finished difference. Result has 78 places, 113 transitions, 574 flow [2023-08-03 19:50:02,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=574, PETRI_PLACES=78, PETRI_TRANSITIONS=113} [2023-08-03 19:50:02,768 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2023-08-03 19:50:02,768 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 113 transitions, 574 flow [2023-08-03 19:50:02,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 461.46153846153845) internal successors, (5999), 13 states have internal predecessors, (5999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:02,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:02,769 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:02,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 19:50:02,977 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,SelfDestructingSolverStorable13 [2023-08-03 19:50:02,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:50:02,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash -631677394, now seen corresponding path program 3 times [2023-08-03 19:50:02,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:02,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067961324] [2023-08-03 19:50:02,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:02,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-08-03 19:50:03,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067961324] [2023-08-03 19:50:03,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067961324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867034253] [2023-08-03 19:50:03,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 19:50:03,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:03,233 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) [2023-08-03 19:50:03,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 19:50:04,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-03 19:50:04,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:50:04,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:50:04,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-08-03 19:50:04,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:04,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867034253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:04,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:04,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-08-03 19:50:04,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124586225] [2023-08-03 19:50:04,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:04,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:50:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:50:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-03 19:50:04,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 1317 [2023-08-03 19:50:04,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 113 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 506.8) internal successors, (2534), 5 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:04,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:04,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 1317 [2023-08-03 19:50:04,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:50:35,398 INFO L124 PetriNetUnfolderBase]: 29203/35319 cut-off events. [2023-08-03 19:50:35,398 INFO L125 PetriNetUnfolderBase]: For 2346/2346 co-relation queries the response was YES. [2023-08-03 19:50:35,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72187 conditions, 35319 events. 29203/35319 cut-off events. For 2346/2346 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 128880 event pairs, 5827 based on Foata normal form. 16/17602 useless extension candidates. Maximal degree in co-relation 71936. Up to 34252 conditions per place. [2023-08-03 19:50:35,507 INFO L140 encePairwiseOnDemand]: 1313/1317 looper letters, 126 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2023-08-03 19:50:35,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 135 transitions, 878 flow [2023-08-03 19:50:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:50:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:50:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2604 transitions. [2023-08-03 19:50:35,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954441913439636 [2023-08-03 19:50:35,510 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2604 transitions. [2023-08-03 19:50:35,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2604 transitions. [2023-08-03 19:50:35,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:50:35,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2604 transitions. [2023-08-03 19:50:35,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 520.8) internal successors, (2604), 5 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:35,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1317.0) internal successors, (7902), 6 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:35,516 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1317.0) internal successors, (7902), 6 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:35,516 INFO L175 Difference]: Start difference. First operand has 78 places, 113 transitions, 574 flow. Second operand 5 states and 2604 transitions. [2023-08-03 19:50:35,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 135 transitions, 878 flow [2023-08-03 19:50:35,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 135 transitions, 792 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-03 19:50:35,521 INFO L231 Difference]: Finished difference. Result has 75 places, 113 transitions, 505 flow [2023-08-03 19:50:35,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=75, PETRI_TRANSITIONS=113} [2023-08-03 19:50:35,521 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2023-08-03 19:50:35,521 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 113 transitions, 505 flow [2023-08-03 19:50:35,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 506.8) internal successors, (2534), 5 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:35,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:50:35,522 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:50:35,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 19:50:35,731 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,SelfDestructingSolverStorable14 [2023-08-03 19:50:35,731 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:50:35,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:50:35,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1163769380, now seen corresponding path program 1 times [2023-08-03 19:50:35,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:50:35,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667032890] [2023-08-03 19:50:35,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:50:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-08-03 19:50:35,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:50:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667032890] [2023-08-03 19:50:35,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667032890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:50:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077129295] [2023-08-03 19:50:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:50:35,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:50:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:50:35,820 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) [2023-08-03 19:50:35,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 19:50:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:50:36,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:50:36,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:50:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-08-03 19:50:36,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:50:36,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077129295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:50:36,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:50:36,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 19:50:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875531814] [2023-08-03 19:50:36,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:50:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:50:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:50:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:50:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:50:36,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 1317 [2023-08-03 19:50:36,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 113 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 512.0) internal successors, (1536), 3 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:50:36,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:50:36,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 1317 [2023-08-03 19:50:36,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:02,368 INFO L124 PetriNetUnfolderBase]: 23937/29237 cut-off events. [2023-08-03 19:51:02,368 INFO L125 PetriNetUnfolderBase]: For 1877/1877 co-relation queries the response was YES. [2023-08-03 19:51:02,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59861 conditions, 29237 events. 23937/29237 cut-off events. For 1877/1877 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 107179 event pairs, 7008 based on Foata normal form. 0/14856 useless extension candidates. Maximal degree in co-relation 59648. Up to 20645 conditions per place. [2023-08-03 19:51:02,456 INFO L140 encePairwiseOnDemand]: 1314/1317 looper letters, 140 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-03 19:51:02,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 147 transitions, 867 flow [2023-08-03 19:51:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:51:02,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:51:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1613 transitions. [2023-08-03 19:51:02,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082510756770438 [2023-08-03 19:51:02,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1613 transitions. [2023-08-03 19:51:02,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1613 transitions. [2023-08-03 19:51:02,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:02,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1613 transitions. [2023-08-03 19:51:02,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.6666666666666) internal successors, (1613), 3 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,462 INFO L175 Difference]: Start difference. First operand has 75 places, 113 transitions, 505 flow. Second operand 3 states and 1613 transitions. [2023-08-03 19:51:02,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 147 transitions, 867 flow [2023-08-03 19:51:02,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 147 transitions, 860 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:51:02,465 INFO L231 Difference]: Finished difference. Result has 76 places, 114 transitions, 510 flow [2023-08-03 19:51:02,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=510, PETRI_PLACES=76, PETRI_TRANSITIONS=114} [2023-08-03 19:51:02,466 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2023-08-03 19:51:02,466 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 114 transitions, 510 flow [2023-08-03 19:51:02,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 512.0) internal successors, (1536), 3 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:02,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:02,466 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:02,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:02,675 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,SelfDestructingSolverStorable15 [2023-08-03 19:51:02,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:51:02,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:02,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1538234226, now seen corresponding path program 1 times [2023-08-03 19:51:02,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859492730] [2023-08-03 19:51:02,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:02,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-08-03 19:51:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859492730] [2023-08-03 19:51:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859492730] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185268452] [2023-08-03 19:51:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:02,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:02,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:02,769 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) [2023-08-03 19:51:02,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 19:51:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:03,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 19:51:03,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-08-03 19:51:03,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-08-03 19:51:03,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185268452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:03,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:03,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 8] total 16 [2023-08-03 19:51:03,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732388128] [2023-08-03 19:51:03,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:03,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-03 19:51:03,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:03,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-03 19:51:03,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2023-08-03 19:51:04,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 454 out of 1317 [2023-08-03 19:51:04,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 114 transitions, 510 flow. Second operand has 16 states, 16 states have (on average 456.8125) internal successors, (7309), 16 states have internal predecessors, (7309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:04,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:04,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 454 of 1317 [2023-08-03 19:51:04,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:27,937 INFO L124 PetriNetUnfolderBase]: 21841/26631 cut-off events. [2023-08-03 19:51:27,937 INFO L125 PetriNetUnfolderBase]: For 3450/3450 co-relation queries the response was YES. [2023-08-03 19:51:27,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55841 conditions, 26631 events. 21841/26631 cut-off events. For 3450/3450 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 94746 event pairs, 4336 based on Foata normal form. 18/13849 useless extension candidates. Maximal degree in co-relation 55592. Up to 25811 conditions per place. [2023-08-03 19:51:28,026 INFO L140 encePairwiseOnDemand]: 1298/1317 looper letters, 83 selfloop transitions, 61 changer transitions 0/149 dead transitions. [2023-08-03 19:51:28,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 149 transitions, 948 flow [2023-08-03 19:51:28,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-03 19:51:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-03 19:51:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 7421 transitions. [2023-08-03 19:51:28,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35217350037965073 [2023-08-03 19:51:28,034 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 7421 transitions. [2023-08-03 19:51:28,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 7421 transitions. [2023-08-03 19:51:28,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:28,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 7421 transitions. [2023-08-03 19:51:28,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 463.8125) internal successors, (7421), 16 states have internal predecessors, (7421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1317.0) internal successors, (22389), 17 states have internal predecessors, (22389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,049 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1317.0) internal successors, (22389), 17 states have internal predecessors, (22389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,049 INFO L175 Difference]: Start difference. First operand has 76 places, 114 transitions, 510 flow. Second operand 16 states and 7421 transitions. [2023-08-03 19:51:28,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 149 transitions, 948 flow [2023-08-03 19:51:28,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 149 transitions, 946 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:51:28,060 INFO L231 Difference]: Finished difference. Result has 90 places, 127 transitions, 738 flow [2023-08-03 19:51:28,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=738, PETRI_PLACES=90, PETRI_TRANSITIONS=127} [2023-08-03 19:51:28,061 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2023-08-03 19:51:28,061 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 127 transitions, 738 flow [2023-08-03 19:51:28,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 456.8125) internal successors, (7309), 16 states have internal predecessors, (7309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:28,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:28,062 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:28,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 19:51:28,270 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,SelfDestructingSolverStorable16 [2023-08-03 19:51:28,270 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:51:28,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:28,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1849394500, now seen corresponding path program 1 times [2023-08-03 19:51:28,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:28,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118694857] [2023-08-03 19:51:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:28,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-08-03 19:51:28,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:28,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118694857] [2023-08-03 19:51:28,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118694857] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:28,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979683126] [2023-08-03 19:51:28,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:28,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:28,590 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) [2023-08-03 19:51:28,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 19:51:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:29,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 19:51:29,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-08-03 19:51:29,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:51:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-08-03 19:51:29,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979683126] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:51:29,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:51:29,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-08-03 19:51:29,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200258993] [2023-08-03 19:51:29,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:51:29,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-03 19:51:29,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:29,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-03 19:51:29,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2023-08-03 19:51:30,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 459 out of 1317 [2023-08-03 19:51:30,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 127 transitions, 738 flow. Second operand has 29 states, 29 states have (on average 460.82758620689657) internal successors, (13364), 29 states have internal predecessors, (13364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:30,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:30,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 459 of 1317 [2023-08-03 19:51:30,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:51:54,594 INFO L124 PetriNetUnfolderBase]: 21841/26633 cut-off events. [2023-08-03 19:51:54,594 INFO L125 PetriNetUnfolderBase]: For 2731/2731 co-relation queries the response was YES. [2023-08-03 19:51:54,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55630 conditions, 26633 events. 21841/26633 cut-off events. For 2731/2731 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 94859 event pairs, 9148 based on Foata normal form. 2/13835 useless extension candidates. Maximal degree in co-relation 55323. Up to 25903 conditions per place. [2023-08-03 19:51:54,673 INFO L140 encePairwiseOnDemand]: 1300/1317 looper letters, 64 selfloop transitions, 60 changer transitions 0/129 dead transitions. [2023-08-03 19:51:54,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 129 transitions, 1006 flow [2023-08-03 19:51:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 19:51:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 19:51:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 9303 transitions. [2023-08-03 19:51:54,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3531890660592255 [2023-08-03 19:51:54,680 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 9303 transitions. [2023-08-03 19:51:54,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 9303 transitions. [2023-08-03 19:51:54,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:51:54,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 9303 transitions. [2023-08-03 19:51:54,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 465.15) internal successors, (9303), 20 states have internal predecessors, (9303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:54,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1317.0) internal successors, (27657), 21 states have internal predecessors, (27657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:54,699 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1317.0) internal successors, (27657), 21 states have internal predecessors, (27657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:54,699 INFO L175 Difference]: Start difference. First operand has 90 places, 127 transitions, 738 flow. Second operand 20 states and 9303 transitions. [2023-08-03 19:51:54,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 129 transitions, 1006 flow [2023-08-03 19:51:54,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 884 flow, removed 31 selfloop flow, removed 6 redundant places. [2023-08-03 19:51:54,707 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 766 flow [2023-08-03 19:51:54,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=766, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2023-08-03 19:51:54,707 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 51 predicate places. [2023-08-03 19:51:54,707 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 766 flow [2023-08-03 19:51:54,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 460.82758620689657) internal successors, (13364), 29 states have internal predecessors, (13364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:54,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:51:54,709 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:51:54,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-03 19:51:54,918 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,SelfDestructingSolverStorable17 [2023-08-03 19:51:54,918 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:51:54,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:51:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash -741691354, now seen corresponding path program 2 times [2023-08-03 19:51:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:51:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507000005] [2023-08-03 19:51:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:51:54,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:51:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:51:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-08-03 19:51:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:51:55,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507000005] [2023-08-03 19:51:55,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507000005] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:51:55,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872344022] [2023-08-03 19:51:55,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 19:51:55,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:51:55,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:51:55,042 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:51:55,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 19:51:56,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 19:51:56,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 19:51:56,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:51:56,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:51:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2023-08-03 19:51:56,067 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:51:56,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872344022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:51:56,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:51:56,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 19:51:56,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446312634] [2023-08-03 19:51:56,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:51:56,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:51:56,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:51:56,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:51:56,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:51:56,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 1317 [2023-08-03 19:51:56,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 766 flow. Second operand has 5 states, 5 states have (on average 507.8) internal successors, (2539), 5 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:51:56,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:51:56,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 1317 [2023-08-03 19:51:56,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:52:17,472 INFO L124 PetriNetUnfolderBase]: 20049/24521 cut-off events. [2023-08-03 19:52:17,472 INFO L125 PetriNetUnfolderBase]: For 1541/1541 co-relation queries the response was YES. [2023-08-03 19:52:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51341 conditions, 24521 events. 20049/24521 cut-off events. For 1541/1541 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 86671 event pairs, 160 based on Foata normal form. 256/13001 useless extension candidates. Maximal degree in co-relation 50981. Up to 20522 conditions per place. [2023-08-03 19:52:17,543 INFO L140 encePairwiseOnDemand]: 1313/1317 looper letters, 185 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2023-08-03 19:52:17,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 193 transitions, 1272 flow [2023-08-03 19:52:17,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:52:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:52:17,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2646 transitions. [2023-08-03 19:52:17,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018223234624146 [2023-08-03 19:52:17,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2646 transitions. [2023-08-03 19:52:17,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2646 transitions. [2023-08-03 19:52:17,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:52:17,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2646 transitions. [2023-08-03 19:52:17,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 529.2) internal successors, (2646), 5 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:17,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1317.0) internal successors, (7902), 6 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:17,551 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1317.0) internal successors, (7902), 6 states have internal predecessors, (7902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:17,551 INFO L175 Difference]: Start difference. First operand has 104 places, 129 transitions, 766 flow. Second operand 5 states and 2646 transitions. [2023-08-03 19:52:17,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 193 transitions, 1272 flow [2023-08-03 19:52:17,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 193 transitions, 1114 flow, removed 22 selfloop flow, removed 15 redundant places. [2023-08-03 19:52:17,567 INFO L231 Difference]: Finished difference. Result has 94 places, 129 transitions, 625 flow [2023-08-03 19:52:17,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=625, PETRI_PLACES=94, PETRI_TRANSITIONS=129} [2023-08-03 19:52:17,568 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2023-08-03 19:52:17,568 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 129 transitions, 625 flow [2023-08-03 19:52:17,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 507.8) internal successors, (2539), 5 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:17,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:52:17,568 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 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] [2023-08-03 19:52:17,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-03 19:52:17,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:52:17,777 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:52:17,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:52:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash -321623785, now seen corresponding path program 1 times [2023-08-03 19:52:17,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:52:17,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736797361] [2023-08-03 19:52:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:52:17,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:52:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:52:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-08-03 19:52:17,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:52:17,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736797361] [2023-08-03 19:52:17,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736797361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:52:17,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751060301] [2023-08-03 19:52:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:52:17,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:52:17,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:52:17,983 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:52:17,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 19:52:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:52:19,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 853 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:52:19,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:52:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-08-03 19:52:19,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:52:19,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751060301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:52:19,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:52:19,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-03 19:52:19,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698398712] [2023-08-03 19:52:19,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:52:19,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:52:19,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:52:19,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:52:19,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:52:19,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 1317 [2023-08-03 19:52:19,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 129 transitions, 625 flow. Second operand has 3 states, 3 states have (on average 513.6666666666666) internal successors, (1541), 3 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:19,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:52:19,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 1317 [2023-08-03 19:52:19,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:52:39,850 INFO L124 PetriNetUnfolderBase]: 19400/23876 cut-off events. [2023-08-03 19:52:39,850 INFO L125 PetriNetUnfolderBase]: For 4734/4734 co-relation queries the response was YES. [2023-08-03 19:52:39,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50792 conditions, 23876 events. 19400/23876 cut-off events. For 4734/4734 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 85694 event pairs, 6508 based on Foata normal form. 0/12692 useless extension candidates. Maximal degree in co-relation 50529. Up to 18483 conditions per place. [2023-08-03 19:52:39,920 INFO L140 encePairwiseOnDemand]: 1314/1317 looper letters, 157 selfloop transitions, 2 changer transitions 0/163 dead transitions. [2023-08-03 19:52:39,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 163 transitions, 1019 flow [2023-08-03 19:52:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:52:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:52:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1613 transitions. [2023-08-03 19:52:39,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082510756770438 [2023-08-03 19:52:39,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1613 transitions. [2023-08-03 19:52:39,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1613 transitions. [2023-08-03 19:52:39,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:52:39,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1613 transitions. [2023-08-03 19:52:39,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 537.6666666666666) internal successors, (1613), 3 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:39,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:39,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1317.0) internal successors, (5268), 4 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:39,926 INFO L175 Difference]: Start difference. First operand has 94 places, 129 transitions, 625 flow. Second operand 3 states and 1613 transitions. [2023-08-03 19:52:39,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 163 transitions, 1019 flow [2023-08-03 19:52:39,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 163 transitions, 1012 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 19:52:39,934 INFO L231 Difference]: Finished difference. Result has 95 places, 130 transitions, 630 flow [2023-08-03 19:52:39,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=630, PETRI_PLACES=95, PETRI_TRANSITIONS=130} [2023-08-03 19:52:39,934 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2023-08-03 19:52:39,934 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 130 transitions, 630 flow [2023-08-03 19:52:39,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 513.6666666666666) internal successors, (1541), 3 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:39,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:52:39,934 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 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, 1] [2023-08-03 19:52:39,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 19:52:40,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:52:40,135 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:52:40,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:52:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1944898618, now seen corresponding path program 1 times [2023-08-03 19:52:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:52:40,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561693275] [2023-08-03 19:52:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:52:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:52:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:52:40,298 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-08-03 19:52:40,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:52:40,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561693275] [2023-08-03 19:52:40,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561693275] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:52:40,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389603365] [2023-08-03 19:52:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:52:40,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:52:40,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:52:40,300 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:52:40,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-03 19:52:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:52:41,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:52:41,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:52:41,370 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-08-03 19:52:41,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:52:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-08-03 19:52:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389603365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:52:41,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:52:41,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:52:41,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589553916] [2023-08-03 19:52:41,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:52:41,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:52:41,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:52:41,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:52:41,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:52:41,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 1317 [2023-08-03 19:52:41,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 130 transitions, 630 flow. Second operand has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:52:41,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:52:41,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 1317 [2023-08-03 19:52:41,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:01,327 INFO L124 PetriNetUnfolderBase]: 18512/22764 cut-off events. [2023-08-03 19:53:01,328 INFO L125 PetriNetUnfolderBase]: For 2713/2713 co-relation queries the response was YES. [2023-08-03 19:53:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48734 conditions, 22764 events. 18512/22764 cut-off events. For 2713/2713 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 78594 event pairs, 3490 based on Foata normal form. 64/12237 useless extension candidates. Maximal degree in co-relation 48470. Up to 19029 conditions per place. [2023-08-03 19:53:01,394 INFO L140 encePairwiseOnDemand]: 1314/1317 looper letters, 172 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2023-08-03 19:53:01,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 179 transitions, 1074 flow [2023-08-03 19:53:01,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:53:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:53:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2129 transitions. [2023-08-03 19:53:01,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041381928625664 [2023-08-03 19:53:01,397 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2129 transitions. [2023-08-03 19:53:01,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2129 transitions. [2023-08-03 19:53:01,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:01,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2129 transitions. [2023-08-03 19:53:01,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 532.25) internal successors, (2129), 4 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:01,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1317.0) internal successors, (6585), 5 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:01,401 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1317.0) internal successors, (6585), 5 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:01,401 INFO L175 Difference]: Start difference. First operand has 95 places, 130 transitions, 630 flow. Second operand 4 states and 2129 transitions. [2023-08-03 19:53:01,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 179 transitions, 1074 flow [2023-08-03 19:53:01,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 179 transitions, 1072 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 19:53:01,454 INFO L231 Difference]: Finished difference. Result has 97 places, 129 transitions, 626 flow [2023-08-03 19:53:01,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=626, PETRI_PLACES=97, PETRI_TRANSITIONS=129} [2023-08-03 19:53:01,455 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2023-08-03 19:53:01,455 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 129 transitions, 626 flow [2023-08-03 19:53:01,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 510.0) internal successors, (2550), 5 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:01,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:01,455 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2023-08-03 19:53:01,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-03 19:53:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:01,665 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:01,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:01,665 INFO L85 PathProgramCache]: Analyzing trace with hash 123332556, now seen corresponding path program 1 times [2023-08-03 19:53:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:01,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097491651] [2023-08-03 19:53:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:01,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-08-03 19:53:01,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:01,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097491651] [2023-08-03 19:53:01,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097491651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:01,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611102329] [2023-08-03 19:53:01,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:01,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:01,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:01,821 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:01,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-03 19:53:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:02,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 876 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:53:02,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-08-03 19:53:02,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:53:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-08-03 19:53:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611102329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:53:02,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:53:02,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 19:53:02,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621812165] [2023-08-03 19:53:02,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:53:02,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:53:02,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:53:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:53:02,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 1317 [2023-08-03 19:53:02,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 129 transitions, 626 flow. Second operand has 5 states, 5 states have (on average 510.2) internal successors, (2551), 5 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:02,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:02,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 1317 [2023-08-03 19:53:02,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:18,526 INFO L124 PetriNetUnfolderBase]: 14308/17536 cut-off events. [2023-08-03 19:53:18,526 INFO L125 PetriNetUnfolderBase]: For 4120/4120 co-relation queries the response was YES. [2023-08-03 19:53:18,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37773 conditions, 17536 events. 14308/17536 cut-off events. For 4120/4120 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 57530 event pairs, 2353 based on Foata normal form. 256/9521 useless extension candidates. Maximal degree in co-relation 37509. Up to 7084 conditions per place. [2023-08-03 19:53:18,576 INFO L140 encePairwiseOnDemand]: 1313/1317 looper letters, 183 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2023-08-03 19:53:18,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 191 transitions, 1132 flow [2023-08-03 19:53:18,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:53:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:53:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2141 transitions. [2023-08-03 19:53:18,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641609719058464 [2023-08-03 19:53:18,578 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2141 transitions. [2023-08-03 19:53:18,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2141 transitions. [2023-08-03 19:53:18,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:18,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2141 transitions. [2023-08-03 19:53:18,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 535.25) internal successors, (2141), 4 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:18,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1317.0) internal successors, (6585), 5 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:18,582 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1317.0) internal successors, (6585), 5 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:18,582 INFO L175 Difference]: Start difference. First operand has 97 places, 129 transitions, 626 flow. Second operand 4 states and 2141 transitions. [2023-08-03 19:53:18,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 191 transitions, 1132 flow [2023-08-03 19:53:18,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 191 transitions, 1126 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:53:18,596 INFO L231 Difference]: Finished difference. Result has 99 places, 130 transitions, 640 flow [2023-08-03 19:53:18,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=640, PETRI_PLACES=99, PETRI_TRANSITIONS=130} [2023-08-03 19:53:18,597 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 46 predicate places. [2023-08-03 19:53:18,597 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 130 transitions, 640 flow [2023-08-03 19:53:18,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 510.2) internal successors, (2551), 5 states have internal predecessors, (2551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:18,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:18,597 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:53:18,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-03 19:53:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-03 19:53:18,807 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:18,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2051741339, now seen corresponding path program 1 times [2023-08-03 19:53:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:18,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015592558] [2023-08-03 19:53:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-08-03 19:53:18,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:53:18,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015592558] [2023-08-03 19:53:18,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015592558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:53:18,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452904736] [2023-08-03 19:53:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:18,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:18,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:53:18,994 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:53:18,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-03 19:53:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:53:20,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 19:53:20,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:53:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-08-03 19:53:20,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:53:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-08-03 19:53:20,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452904736] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 19:53:20,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 19:53:20,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 19:53:20,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112124953] [2023-08-03 19:53:20,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 19:53:20,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:53:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:53:20,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:53:20,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:53:20,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 1317 [2023-08-03 19:53:20,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 130 transitions, 640 flow. Second operand has 5 states, 5 states have (on average 510.6) internal successors, (2553), 5 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:20,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:53:20,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 1317 [2023-08-03 19:53:20,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:53:35,850 INFO L124 PetriNetUnfolderBase]: 14280/17493 cut-off events. [2023-08-03 19:53:35,851 INFO L125 PetriNetUnfolderBase]: For 5845/5845 co-relation queries the response was YES. [2023-08-03 19:53:35,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39181 conditions, 17493 events. 14280/17493 cut-off events. For 5845/5845 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 57327 event pairs, 5681 based on Foata normal form. 17/9255 useless extension candidates. Maximal degree in co-relation 38916. Up to 15893 conditions per place. [2023-08-03 19:53:35,905 INFO L140 encePairwiseOnDemand]: 1313/1317 looper letters, 183 selfloop transitions, 3 changer transitions 2/192 dead transitions. [2023-08-03 19:53:35,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 192 transitions, 1148 flow [2023-08-03 19:53:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 19:53:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 19:53:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2141 transitions. [2023-08-03 19:53:35,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641609719058464 [2023-08-03 19:53:35,907 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2141 transitions. [2023-08-03 19:53:35,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2141 transitions. [2023-08-03 19:53:35,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:53:35,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2141 transitions. [2023-08-03 19:53:35,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 535.25) internal successors, (2141), 4 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:35,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1317.0) internal successors, (6585), 5 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:35,911 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1317.0) internal successors, (6585), 5 states have internal predecessors, (6585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:35,911 INFO L175 Difference]: Start difference. First operand has 99 places, 130 transitions, 640 flow. Second operand 4 states and 2141 transitions. [2023-08-03 19:53:35,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 192 transitions, 1148 flow [2023-08-03 19:53:35,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 192 transitions, 1144 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 19:53:35,936 INFO L231 Difference]: Finished difference. Result has 103 places, 129 transitions, 644 flow [2023-08-03 19:53:35,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1317, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=644, PETRI_PLACES=103, PETRI_TRANSITIONS=129} [2023-08-03 19:53:35,937 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2023-08-03 19:53:35,937 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 129 transitions, 644 flow [2023-08-03 19:53:35,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 510.6) internal successors, (2553), 5 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 19:53:35,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:53:35,937 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-08-03 19:53:35,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-03 19:53:36,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:53:36,141 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 19:53:36,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:53:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash -653622429, now seen corresponding path program 1 times [2023-08-03 19:53:36,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:53:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255598037] [2023-08-03 19:53:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:53:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:53:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-08-03 19:54:01,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:54:01,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255598037] [2023-08-03 19:54:01,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255598037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:54:01,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402491966] [2023-08-03 19:54:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:54:01,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:54:01,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:54:01,845 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:54:01,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-03 19:54:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:54:03,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-03 19:54:03,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:54:06,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,098 INFO L322 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-08-03 19:54:06,099 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 446 treesize of output 395 [2023-08-03 19:54:06,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 19:54:06,954 INFO L322 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-08-03 19:54:06,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 446 treesize of output 395 [2023-08-03 19:54:11,596 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:54:11,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1599 treesize of output 1317 [2023-08-03 19:57:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-08-03 19:57:20,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 19:57:29,770 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (< c_~result_8~0 0)) (.cse34 (+ c_~last_index_of_3~0.offset 12)) (.cse33 (+ 12 c_~last_index_of_7~0.offset)) (.cse5 (+ c_~index_of_0~0.offset 16)) (.cse16 (+ c_~count_occurrences_of_2~0.offset 12)) (.cse24 (+ c_~index_of_4~0.offset 8)) (.cse4 (+ c_~index_of_4~0.offset 16)) (.cse18 (+ 12 c_~count_occurrences_of_6~0.offset)) (.cse17 (+ c_~index_of_0~0.offset 8)) (.cse9 (< 0 c_~result_8~0))) (and (or .cse0 (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse2 (select (select .cse3 c_~index_of_0~0.base) .cse5)) (.cse1 (select (select .cse3 c_~index_of_4~0.base) .cse4))) (or (<= .cse1 .cse2) (< (+ .cse2 2147483647) .cse1))))) (or (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse7 (select (select .cse8 c_~index_of_0~0.base) .cse5)) (.cse6 (select (select .cse8 c_~index_of_4~0.base) .cse4))) (or (< (+ .cse6 2147483648) .cse7) (= .cse7 .cse6) (< (+ .cse7 2147483647) .cse6))))) .cse9))) (or (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse10 (select (select .cse12 c_~index_of_0~0.base) .cse5)) (.cse11 (select (select .cse12 c_~index_of_4~0.base) .cse4))) (or (< .cse10 .cse11) (< (+ .cse11 2147483648) .cse10) (= .cse10 .cse11))))) .cse9) (or (and (<= 0 c_~result_8~0) (<= c_~result_8~0 0)) (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse15 (select (select .cse14 c_~count_occurrences_of_6~0.base) .cse18)) (.cse13 (select .cse14 c_~index_of_0~0.base))) (or (not (= (+ (select .cse13 .cse5) 1) 0)) (not (= (+ (select (select .cse14 c_~index_of_4~0.base) .cse4) 1) 0)) (= .cse15 1) (< 1 .cse15) (< 1 (select (select .cse14 c_~count_occurrences_of_2~0.base) .cse16)) (not (= (+ (select .cse13 .cse17) 1) 0)))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse20 (select (select .cse19 c_~count_occurrences_of_6~0.base) .cse18)) (.cse21 (select (select .cse19 c_~count_occurrences_of_2~0.base) .cse16))) (or (not (= (+ (select (select .cse19 c_~index_of_0~0.base) .cse5) 1) 0)) (not (= (+ (select (select .cse19 c_~index_of_4~0.base) .cse4) 1) 0)) (= .cse20 1) (< 1 .cse20) (= .cse21 1) (< 1 .cse21))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse23 (select .cse25 c_~index_of_4~0.base)) (.cse22 (select .cse25 c_~index_of_0~0.base))) (or (not (= (+ (select .cse22 .cse5) 1) 0)) (not (= (+ (select .cse23 .cse24) 1) 0)) (not (= (+ (select .cse23 .cse4) 1) 0)) (< 1 (select (select .cse25 c_~count_occurrences_of_6~0.base) .cse18)) (< 1 (select (select .cse25 c_~count_occurrences_of_2~0.base) .cse16)) (not (= (+ (select .cse22 .cse17) 1) 0)))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse27 (select .cse26 c_~index_of_4~0.base)) (.cse28 (select (select .cse26 c_~count_occurrences_of_2~0.base) .cse16))) (or (not (= (+ (select (select .cse26 c_~index_of_0~0.base) .cse5) 1) 0)) (not (= (+ (select .cse27 .cse24) 1) 0)) (not (= (+ (select .cse27 .cse4) 1) 0)) (< 1 (select (select .cse26 c_~count_occurrences_of_6~0.base) .cse18)) (= .cse28 1) (< 1 .cse28))))))) (or .cse0 (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse31 (select (select .cse32 c_~last_index_of_3~0.base) .cse34)) (.cse30 (select (select .cse32 c_~last_index_of_7~0.base) .cse33)) (.cse29 (select .cse32 c_~index_of_0~0.base))) (or (not (= (+ (select .cse29 .cse5) 1) 0)) (<= .cse30 .cse31) (not (= (select (select .cse32 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select (select .cse32 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse32 c_~count_occurrences_of_6~0.base) .cse18) 1) (< (+ 2147483647 .cse31) .cse30) (= (+ (select .cse29 .cse17) 1) 0))))) (or (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse38 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse35 (select (select .cse38 c_~last_index_of_3~0.base) .cse34)) (.cse36 (select (select .cse38 c_~last_index_of_7~0.base) .cse33)) (.cse37 (select .cse38 c_~index_of_0~0.base))) (or (= .cse35 .cse36) (not (= (+ (select .cse37 .cse5) 1) 0)) (< (+ .cse36 2147483648) .cse35) (not (= (select (select .cse38 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select (select .cse38 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse38 c_~count_occurrences_of_6~0.base) .cse18) 1) (< (+ 2147483647 .cse35) .cse36) (= (+ (select .cse37 .cse17) 1) 0))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse43 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse42 (select .cse43 c_~index_of_4~0.base)) (.cse39 (select (select .cse43 c_~last_index_of_3~0.base) .cse34)) (.cse40 (select (select .cse43 c_~last_index_of_7~0.base) .cse33)) (.cse41 (select .cse43 c_~index_of_0~0.base))) (or (= .cse39 .cse40) (not (= (+ (select .cse41 .cse5) 1) 0)) (= (+ (select .cse42 .cse24) 1) 0) (< (+ .cse40 2147483648) .cse39) (not (= (select (select .cse43 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select .cse42 .cse4) 1) 0)) (< (+ 2147483647 .cse39) .cse40) (not (= (select (select .cse43 c_~count_occurrences_of_6~0.base) .cse18) 1)) (= (+ (select .cse41 .cse17) 1) 0)))))) .cse9) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse48 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse47 (select .cse48 c_~index_of_4~0.base)) (.cse46 (select (select .cse48 c_~last_index_of_3~0.base) .cse34)) (.cse45 (select (select .cse48 c_~last_index_of_7~0.base) .cse33)) (.cse44 (select .cse48 c_~index_of_0~0.base))) (or (not (= (+ (select .cse44 .cse5) 1) 0)) (<= .cse45 .cse46) (= (+ (select .cse47 .cse24) 1) 0) (not (= (select (select .cse48 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select .cse47 .cse4) 1) 0)) (< (+ 2147483647 .cse46) .cse45) (not (= (select (select .cse48 c_~count_occurrences_of_6~0.base) .cse18) 1)) (= (+ (select .cse44 .cse17) 1) 0))))))) (or (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse53 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse50 (select (select .cse53 c_~last_index_of_7~0.base) .cse33)) (.cse49 (select (select .cse53 c_~last_index_of_3~0.base) .cse34)) (.cse52 (select .cse53 c_~index_of_4~0.base)) (.cse51 (select .cse53 c_~index_of_0~0.base))) (or (= .cse49 .cse50) (< .cse49 .cse50) (not (= (+ (select .cse51 .cse5) 1) 0)) (= (+ (select .cse52 .cse24) 1) 0) (< (+ .cse50 2147483648) .cse49) (not (= (select (select .cse53 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select .cse52 .cse4) 1) 0)) (not (= (select (select .cse53 c_~count_occurrences_of_6~0.base) .cse18) 1)) (= (+ (select .cse51 .cse17) 1) 0))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse57 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse55 (select (select .cse57 c_~last_index_of_7~0.base) .cse33)) (.cse54 (select (select .cse57 c_~last_index_of_3~0.base) .cse34)) (.cse56 (select .cse57 c_~index_of_0~0.base))) (or (= .cse54 .cse55) (< .cse54 .cse55) (not (= (+ (select .cse56 .cse5) 1) 0)) (< (+ .cse55 2147483648) .cse54) (not (= (select (select .cse57 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select (select .cse57 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse57 c_~count_occurrences_of_6~0.base) .cse18) 1) (= (+ (select .cse56 .cse17) 1) 0)))))) .cse9) (or (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse59 (select .cse58 c_~index_of_4~0.base)) (.cse60 (select (select .cse58 c_~count_occurrences_of_2~0.base) .cse16))) (or (not (= (+ (select (select .cse58 c_~index_of_0~0.base) .cse5) 1) 0)) (= (+ (select .cse59 .cse24) 1) 0) (not (= (+ (select .cse59 .cse4) 1) 0)) (= .cse60 1) (not (= (select (select .cse58 c_~count_occurrences_of_6~0.base) .cse18) 1)) (< 1 .cse60))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse62 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse61 (select .cse62 c_~index_of_0~0.base))) (or (not (= (+ (select .cse61 .cse5) 1) 0)) (not (= (+ (select (select .cse62 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse62 c_~count_occurrences_of_6~0.base) .cse18) 1) (< 1 (select (select .cse62 c_~count_occurrences_of_2~0.base) .cse16)) (not (= (+ (select .cse61 .cse17) 1) 0)))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse65 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse64 (select .cse65 c_~index_of_4~0.base)) (.cse63 (select .cse65 c_~index_of_0~0.base))) (or (not (= (+ (select .cse63 .cse5) 1) 0)) (= (+ (select .cse64 .cse24) 1) 0) (not (= (+ (select .cse64 .cse4) 1) 0)) (not (= (select (select .cse65 c_~count_occurrences_of_6~0.base) .cse18) 1)) (< 1 (select (select .cse65 c_~count_occurrences_of_2~0.base) .cse16)) (not (= (+ (select .cse63 .cse17) 1) 0)))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse66 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse67 (select (select .cse66 c_~count_occurrences_of_2~0.base) .cse16))) (or (not (= (+ (select (select .cse66 c_~index_of_0~0.base) .cse5) 1) 0)) (not (= (+ (select (select .cse66 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse66 c_~count_occurrences_of_6~0.base) .cse18) 1) (= .cse67 1) (< 1 .cse67)))))) .cse0) (or .cse0 (and (or (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse70 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse71 (select .cse70 c_~index_of_4~0.base)) (.cse68 (select (select .cse70 c_~last_index_of_3~0.base) .cse34)) (.cse69 (select (select .cse70 c_~last_index_of_7~0.base) .cse33))) (or (= .cse68 .cse69) (not (= (+ (select (select .cse70 c_~index_of_0~0.base) .cse5) 1) 0)) (= (+ (select .cse71 .cse24) 1) 0) (< (+ .cse69 2147483648) .cse68) (not (= (+ (select .cse71 .cse4) 1) 0)) (< (+ 2147483647 .cse68) .cse69) (not (= (select (select .cse70 c_~count_occurrences_of_6~0.base) .cse18) 1)) (<= (select (select .cse70 c_~count_occurrences_of_2~0.base) .cse16) 1))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse74 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse72 (select (select .cse74 c_~last_index_of_3~0.base) .cse34)) (.cse73 (select (select .cse74 c_~last_index_of_7~0.base) .cse33))) (or (= .cse72 .cse73) (not (= (+ (select (select .cse74 c_~index_of_0~0.base) .cse5) 1) 0)) (< (+ .cse73 2147483648) .cse72) (not (= (+ (select (select .cse74 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse74 c_~count_occurrences_of_6~0.base) .cse18) 1) (< (+ 2147483647 .cse72) .cse73) (<= (select (select .cse74 c_~count_occurrences_of_2~0.base) .cse16) 1)))))) .cse9) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse75 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse77 (select (select .cse75 c_~last_index_of_3~0.base) .cse34)) (.cse76 (select (select .cse75 c_~last_index_of_7~0.base) .cse33))) (or (not (= (+ (select (select .cse75 c_~index_of_0~0.base) .cse5) 1) 0)) (<= .cse76 .cse77) (not (= (+ (select (select .cse75 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse75 c_~count_occurrences_of_6~0.base) .cse18) 1) (< (+ 2147483647 .cse77) .cse76) (<= (select (select .cse75 c_~count_occurrences_of_2~0.base) .cse16) 1))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse78 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse81 (select .cse78 c_~index_of_4~0.base)) (.cse80 (select (select .cse78 c_~last_index_of_3~0.base) .cse34)) (.cse79 (select (select .cse78 c_~last_index_of_7~0.base) .cse33))) (or (not (= (+ (select (select .cse78 c_~index_of_0~0.base) .cse5) 1) 0)) (<= .cse79 .cse80) (= (+ (select .cse81 .cse24) 1) 0) (not (= (+ (select .cse81 .cse4) 1) 0)) (< (+ 2147483647 .cse80) .cse79) (not (= (select (select .cse78 c_~count_occurrences_of_6~0.base) .cse18) 1)) (<= (select (select .cse78 c_~count_occurrences_of_2~0.base) .cse16) 1))))))) (or .cse9 (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse84 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse83 (select (select .cse84 c_~last_index_of_7~0.base) .cse33)) (.cse82 (select (select .cse84 c_~last_index_of_3~0.base) .cse34))) (or (= .cse82 .cse83) (< .cse82 .cse83) (not (= (+ (select (select .cse84 c_~index_of_0~0.base) .cse5) 1) 0)) (< (+ .cse83 2147483648) .cse82) (not (= (+ (select (select .cse84 c_~index_of_4~0.base) .cse4) 1) 0)) (<= (select (select .cse84 c_~count_occurrences_of_6~0.base) .cse18) 1) (<= (select (select .cse84 c_~count_occurrences_of_2~0.base) .cse16) 1))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse87 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse86 (select (select .cse87 c_~last_index_of_7~0.base) .cse33)) (.cse85 (select (select .cse87 c_~last_index_of_3~0.base) .cse34)) (.cse88 (select .cse87 c_~index_of_4~0.base))) (or (= .cse85 .cse86) (< .cse85 .cse86) (not (= (+ (select (select .cse87 c_~index_of_0~0.base) .cse5) 1) 0)) (= (+ (select .cse88 .cse24) 1) 0) (< (+ .cse86 2147483648) .cse85) (not (= (+ (select .cse88 .cse4) 1) 0)) (not (= (select (select .cse87 c_~count_occurrences_of_6~0.base) .cse18) 1)) (<= (select (select .cse87 c_~count_occurrences_of_2~0.base) .cse16) 1))))))) (or (and (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse90 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse91 (select (select .cse90 c_~count_occurrences_of_6~0.base) .cse18)) (.cse89 (select .cse90 c_~index_of_0~0.base))) (or (not (= (+ (select .cse89 .cse5) 1) 0)) (not (= (select (select .cse90 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select (select .cse90 c_~index_of_4~0.base) .cse4) 1) 0)) (= .cse91 1) (< 1 .cse91) (= (+ (select .cse89 .cse17) 1) 0))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse92 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse93 (select .cse92 c_~index_of_4~0.base))) (or (not (= (+ (select (select .cse92 c_~index_of_0~0.base) .cse5) 1) 0)) (not (= (+ (select .cse93 .cse24) 1) 0)) (not (= (+ (select .cse93 .cse4) 1) 0)) (< 1 (select (select .cse92 c_~count_occurrences_of_6~0.base) .cse18)) (<= (select (select .cse92 c_~count_occurrences_of_2~0.base) .cse16) 1))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse94 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse95 (select (select .cse94 c_~count_occurrences_of_6~0.base) .cse18))) (or (not (= (+ (select (select .cse94 c_~index_of_0~0.base) .cse5) 1) 0)) (not (= (+ (select (select .cse94 c_~index_of_4~0.base) .cse4) 1) 0)) (= .cse95 1) (< 1 .cse95) (<= (select (select .cse94 c_~count_occurrences_of_2~0.base) .cse16) 1))))) (forall ((v_ArrVal_3902 (Array Int Int))) (let ((.cse97 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_3902))) (let ((.cse98 (select .cse97 c_~index_of_4~0.base)) (.cse96 (select .cse97 c_~index_of_0~0.base))) (or (not (= (+ (select .cse96 .cse5) 1) 0)) (not (= (select (select .cse97 c_~count_occurrences_of_2~0.base) .cse16) 1)) (not (= (+ (select .cse98 .cse24) 1) 0)) (not (= (+ (select .cse98 .cse4) 1) 0)) (< 1 (select (select .cse97 c_~count_occurrences_of_6~0.base) .cse18)) (= (+ (select .cse96 .cse17) 1) 0)))))) .cse9))) is different from false [2023-08-03 19:57:40,520 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:40,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 9044 treesize of output 7356 [2023-08-03 19:57:41,189 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:41,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 5464 treesize of output 5637 [2023-08-03 19:57:41,868 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:41,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 5392 treesize of output 5511 [2023-08-03 19:57:42,588 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:42,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 5324 treesize of output 5459 [2023-08-03 19:57:43,587 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:43,588 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 5272 treesize of output 5461 [2023-08-03 19:57:44,590 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:44,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 26 case distinctions, treesize of input 5216 treesize of output 5389 [2023-08-03 19:57:45,690 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:45,692 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 5144 treesize of output 5263 [2023-08-03 19:57:46,799 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:46,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 5076 treesize of output 5149 [2023-08-03 19:57:48,047 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:48,049 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 5012 treesize of output 5113 [2023-08-03 19:57:49,315 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:49,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 4988 treesize of output 5089 [2023-08-03 19:57:50,586 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:50,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 4964 treesize of output 5027 [2023-08-03 19:57:51,895 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:51,896 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4940 treesize of output 4901 [2023-08-03 19:57:53,297 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:53,298 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4892 treesize of output 4929 [2023-08-03 19:57:54,634 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:54,635 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 4872 treesize of output 4935 [2023-08-03 19:57:56,186 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:56,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 4848 treesize of output 4967 [2023-08-03 19:57:57,815 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:57,816 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 4780 treesize of output 4915 [2023-08-03 19:57:59,617 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:57:59,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 4728 treesize of output 4817 [2023-08-03 19:58:01,336 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:01,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4680 treesize of output 4641 [2023-08-03 19:58:03,033 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:03,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4632 treesize of output 4609 [2023-08-03 19:58:04,907 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:04,908 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 4600 treesize of output 4701 [2023-08-03 19:58:06,687 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:06,690 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 4576 treesize of output 4639 [2023-08-03 19:58:08,715 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:08,717 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 4552 treesize of output 4619 [2023-08-03 19:58:10,669 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:10,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4532 treesize of output 4565 [2023-08-03 19:58:12,684 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:12,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4508 treesize of output 4545 [2023-08-03 19:58:14,773 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:14,774 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 4488 treesize of output 4555 [2023-08-03 19:58:16,970 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 19:58:16,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 4468 treesize of output 4531 Received shutdown request... [2023-08-03 19:58:19,196 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 19:58:19,196 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 [2023-08-03 19:58:19,197 WARN L265 SmtUtils]: Removed 8 from assertion stack [2023-08-03 19:58:19,199 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-03 19:58:19,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-03 19:58:19,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:58:19,400 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 102 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 217ms.. [2023-08-03 19:58:19,400 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 19:58:19,400 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 19:58:19,400 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:58:19,402 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 19:58:19,402 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 19:58:19,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 07:58:19 BasicIcfg [2023-08-03 19:58:19,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 19:58:19,405 INFO L158 Benchmark]: Toolchain (without parser) took 822161.50ms. Allocated memory was 360.7MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 325.3MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-08-03 19:58:19,405 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 316.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 19:58:19,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.08ms. Allocated memory is still 360.7MB. Free memory was 324.9MB in the beginning and 304.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 19:58:19,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.83ms. Allocated memory is still 360.7MB. Free memory was 304.5MB in the beginning and 296.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-08-03 19:58:19,405 INFO L158 Benchmark]: Boogie Preprocessor took 96.94ms. Allocated memory is still 360.7MB. Free memory was 296.5MB in the beginning and 288.9MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2023-08-03 19:58:19,406 INFO L158 Benchmark]: RCFGBuilder took 2374.50ms. Allocated memory was 360.7MB in the beginning and 488.6MB in the end (delta: 127.9MB). Free memory was 288.9MB in the beginning and 312.1MB in the end (delta: -23.2MB). Peak memory consumption was 195.5MB. Max. memory is 16.0GB. [2023-08-03 19:58:19,406 INFO L158 Benchmark]: TraceAbstraction took 819240.53ms. Allocated memory was 488.6MB in the beginning and 6.3GB in the end (delta: 5.8GB). Free memory was 311.1MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. [2023-08-03 19:58:19,406 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 360.7MB. Free memory is still 316.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 352.08ms. Allocated memory is still 360.7MB. Free memory was 324.9MB in the beginning and 304.5MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 91.83ms. Allocated memory is still 360.7MB. Free memory was 304.5MB in the beginning and 296.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * Boogie Preprocessor took 96.94ms. Allocated memory is still 360.7MB. Free memory was 296.5MB in the beginning and 288.9MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * RCFGBuilder took 2374.50ms. Allocated memory was 360.7MB in the beginning and 488.6MB in the end (delta: 127.9MB). Free memory was 288.9MB in the beginning and 312.1MB in the end (delta: -23.2MB). Peak memory consumption was 195.5MB. Max. memory is 16.0GB. * TraceAbstraction took 819240.53ms. Allocated memory was 488.6MB in the beginning and 6.3GB in the end (delta: 5.8GB). Free memory was 311.1MB in the beginning and 5.3GB in the end (delta: -5.0GB). Peak memory consumption was 4.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 42.7s, 429 PlacesBefore, 39 PlacesAfterwards, 485 TransitionsBefore, 54 TransitionsAfterwards, 18150 CoEnabledTransitionPairs, 7 FixpointIterations, 263 TrivialSequentialCompositions, 150 ConcurrentSequentialCompositions, 77 TrivialYvCompositions, 36 ConcurrentYvCompositions, 41 ChoiceCompositions, 567 TotalNumberOfCompositions, 20000 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18275, independent: 18218, independent conditional: 0, independent unconditional: 18218, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9671, independent: 9640, independent conditional: 0, independent unconditional: 9640, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18275, independent: 8578, independent conditional: 0, independent unconditional: 8578, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 9671, unknown conditional: 0, unknown unconditional: 9671] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 70.2s, 525 PlacesBefore, 53 PlacesAfterwards, 601 TransitionsBefore, 76 TransitionsAfterwards, 62700 CoEnabledTransitionPairs, 7 FixpointIterations, 267 TrivialSequentialCompositions, 252 ConcurrentSequentialCompositions, 77 TrivialYvCompositions, 67 ConcurrentYvCompositions, 53 ChoiceCompositions, 716 TotalNumberOfCompositions, 77338 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 65675, independent: 65571, independent conditional: 0, independent unconditional: 65571, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 31477, independent: 31408, independent conditional: 0, independent unconditional: 31408, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 65675, independent: 34163, independent conditional: 0, independent unconditional: 34163, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 31477, unknown conditional: 0, unknown unconditional: 31477] , Statistics on independence cache: Total cache size (in pairs): 316, Positive cache size: 314, Positive conditional cache size: 0, Positive unconditional cache size: 314, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 235]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 102 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 217ms.. - TimeoutResultAtElement [Line: 229]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 102 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 217ms.. - TimeoutResultAtElement [Line: 230]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 102 with TraceHistMax 13,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 103 for 217ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 517 locations, 3 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: 59.9s, OverallIterations: 8, TraceHistogramMax: 13, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 42.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3610 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2901 mSDsluCounter, 127 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 464 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7704 IncrementalHoareTripleChecker+Invalid, 8168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 464 mSolverCounterUnsat, 127 mSDtfsCounter, 7704 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 416 GetRequests, 333 SyntacticMatches, 17 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=812occurred in iteration=7, InterpolantAutomatonStates: 62, 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: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 496 NumberOfCodeBlocks, 496 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 596 ConstructedInterpolants, 0 QuantifiedInterpolants, 990 SizeOfPredicates, 5 NumberOfNonLiveVariables, 2880 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 969/1282 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 7 procedures, 609 locations, 3 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: 758.9s, OverallIterations: 16, TraceHistogramMax: 13, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 387.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 70.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4095 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3304 mSDsluCounter, 304 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 490 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9043 IncrementalHoareTripleChecker+Invalid, 9533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 490 mSolverCounterUnsat, 212 mSDtfsCounter, 9043 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1332 GetRequests, 1218 SyntacticMatches, 22 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=766occurred in iteration=10, InterpolantAutomatonStates: 95, 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: 0.7s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1625 NumberOfCodeBlocks, 1621 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2081 ConstructedInterpolants, 0 QuantifiedInterpolants, 2657 SizeOfPredicates, 5 NumberOfNonLiveVariables, 8666 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 4925/5255 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