/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:10:58,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:10:59,000 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:10:59,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:10:59,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:10:59,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:10:59,007 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:10:59,032 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:10:59,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:10:59,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:10:59,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:10:59,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:10:59,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:10:59,038 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:10:59,038 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:10:59,038 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:10:59,038 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:10:59,038 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:10:59,039 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:10:59,039 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:10:59,039 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:10:59,039 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:10:59,039 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:10:59,040 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:10:59,041 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:10:59,041 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:10:59,041 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:10:59,041 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:10:59,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:10:59,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:10:59,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:10:59,042 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:10:59,043 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:10:59,044 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:10:59,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:10:59,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:10:59,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:10:59,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:10:59,247 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:10:59,248 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:11:00,299 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:11:00,500 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:11:00,501 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:11:00,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa579505/91bf9aabd8324406bf0632e4130927df/FLAGe5eee959e [2023-08-04 06:11:00,525 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aa579505/91bf9aabd8324406bf0632e4130927df [2023-08-04 06:11:00,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:11:00,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:11:00,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:11:00,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:11:00,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:11:00,531 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:00,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645fde46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00, skipping insertion in model container [2023-08-04 06:11:00,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:00,576 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:11:00,702 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i[983,996] [2023-08-04 06:11:00,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:11:00,878 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:11:00,889 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i[983,996] [2023-08-04 06:11:00,907 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:11:00,909 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:11:00,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:11:00,973 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:11:00,973 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:11:00,978 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:11:00,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00 WrapperNode [2023-08-04 06:11:00,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:11:00,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:11:00,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:11:00,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:11:00,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,038 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-04 06:11:01,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:11:01,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:11:01,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:11:01,040 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:11:01,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,065 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,088 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:11:01,089 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:11:01,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:11:01,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:11:01,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (1/1) ... [2023-08-04 06:11:01,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:11:01,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:11:01,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 06:11:01,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 06:11:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:11:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:11:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:11:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:11:01,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:11:01,144 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:11:01,144 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:11:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:11:01,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:11:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:11:01,145 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:11:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:11:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:11:01,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:11:01,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:11:01,146 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 06:11:01,296 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:11:01,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:11:01,537 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:11:01,639 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:11:01,640 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 06:11:01,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:11:01 BoogieIcfgContainer [2023-08-04 06:11:01,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:11:01,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:11:01,643 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:11:01,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:11:01,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:11:00" (1/3) ... [2023-08-04 06:11:01,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f123e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:11:01, skipping insertion in model container [2023-08-04 06:11:01,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:11:00" (2/3) ... [2023-08-04 06:11:01,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f123e35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:11:01, skipping insertion in model container [2023-08-04 06:11:01,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:11:01" (3/3) ... [2023-08-04 06:11:01,647 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix045_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:11:01,652 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:11:01,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:11:01,659 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:11:01,659 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:11:01,696 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:11:01,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 06:11:01,855 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-04 06:11:01,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:01,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2049 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-04 06:11:01,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 06:11:01,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 129 transitions, 269 flow [2023-08-04 06:11:01,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:11:01,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 129 transitions, 269 flow [2023-08-04 06:11:01,899 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 129 transitions, 269 flow [2023-08-04 06:11:01,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 129 transitions, 269 flow [2023-08-04 06:11:01,942 INFO L124 PetriNetUnfolderBase]: 30/456 cut-off events. [2023-08-04 06:11:01,942 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:01,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 456 events. 30/456 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2026 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 262. Up to 16 conditions per place. [2023-08-04 06:11:01,949 INFO L119 LiptonReduction]: Number of co-enabled transitions 2670 [2023-08-04 06:11:05,540 INFO L134 LiptonReduction]: Checked pairs total: 6747 [2023-08-04 06:11:05,541 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-04 06:11:05,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:11:05,555 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;@5115c36b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:11:05,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:11:05,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:11:05,559 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 06:11:05,559 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:05,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:05,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:11:05,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:11:05,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash -551138549, now seen corresponding path program 1 times [2023-08-04 06:11:05,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:05,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654119833] [2023-08-04 06:11:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:05,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:11:05,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:11:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654119833] [2023-08-04 06:11:05,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654119833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:11:05,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:11:05,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:11:05,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484690685] [2023-08-04 06:11:05,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:11:05,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:11:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:11:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:11:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:11:05,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 245 [2023-08-04 06:11:05,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:05,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:11:05,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 245 [2023-08-04 06:11:05,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:11:06,085 INFO L124 PetriNetUnfolderBase]: 1412/2330 cut-off events. [2023-08-04 06:11:06,085 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 06:11:06,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 2330 events. 1412/2330 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 13083 event pairs, 1155 based on Foata normal form. 0/1982 useless extension candidates. Maximal degree in co-relation 4581. Up to 2181 conditions per place. [2023-08-04 06:11:06,096 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 26 selfloop transitions, 2 changer transitions 1/33 dead transitions. [2023-08-04 06:11:06,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 135 flow [2023-08-04 06:11:06,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:11:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:11:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-04 06:11:06,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49795918367346936 [2023-08-04 06:11:06,108 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-04 06:11:06,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-04 06:11:06,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:11:06,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-04 06:11:06,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,121 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 71 flow. Second operand 3 states and 366 transitions. [2023-08-04 06:11:06,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 135 flow [2023-08-04 06:11:06,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 135 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:11:06,124 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 79 flow [2023-08-04 06:11:06,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-04 06:11:06,128 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-04 06:11:06,128 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 79 flow [2023-08-04 06:11:06,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:06,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:11:06,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:11:06,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:11:06,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1593277210, now seen corresponding path program 1 times [2023-08-04 06:11:06,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:06,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640260128] [2023-08-04 06:11:06,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:06,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:11:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:11:06,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640260128] [2023-08-04 06:11:06,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640260128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:11:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686546841] [2023-08-04 06:11:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:06,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:11:06,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:11:06,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:11:06,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 06:11:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:06,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:11:06,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:11:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:11:06,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:11:06,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686546841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:11:06,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:11:06,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:11:06,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904637292] [2023-08-04 06:11:06,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:11:06,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:11:06,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:11:06,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:11:06,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:11:06,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 245 [2023-08-04 06:11:06,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:11:06,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 245 [2023-08-04 06:11:06,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:11:06,557 INFO L124 PetriNetUnfolderBase]: 1226/1979 cut-off events. [2023-08-04 06:11:06,558 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 06:11:06,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3919 conditions, 1979 events. 1226/1979 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10555 event pairs, 1058 based on Foata normal form. 0/1714 useless extension candidates. Maximal degree in co-relation 3903. Up to 1826 conditions per place. [2023-08-04 06:11:06,567 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 29 selfloop transitions, 2 changer transitions 1/36 dead transitions. [2023-08-04 06:11:06,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 155 flow [2023-08-04 06:11:06,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:11:06,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:11:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-04 06:11:06,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020408163265306 [2023-08-04 06:11:06,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-04 06:11:06,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-04 06:11:06,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:11:06,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-04 06:11:06,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,573 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 79 flow. Second operand 3 states and 369 transitions. [2023-08-04 06:11:06,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 155 flow [2023-08-04 06:11:06,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:11:06,575 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 83 flow [2023-08-04 06:11:06,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-04 06:11:06,575 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 4 predicate places. [2023-08-04 06:11:06,576 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 83 flow [2023-08-04 06:11:06,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:06,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:06,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:11:06,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:11:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:11:06,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:11:06,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1507616093, now seen corresponding path program 1 times [2023-08-04 06:11:06,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506181446] [2023-08-04 06:11:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:06,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:06,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:11:06,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:11:06,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506181446] [2023-08-04 06:11:06,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506181446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:11:06,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769717056] [2023-08-04 06:11:06,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:06,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:11:06,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:11:06,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:11:06,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:11:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:07,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:11:07,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:11:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:11:07,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:11:07,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769717056] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:11:07,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:11:07,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:11:07,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882871823] [2023-08-04 06:11:07,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:11:07,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:11:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:11:07,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:11:07,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:11:07,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 245 [2023-08-04 06:11:07,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:11:07,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 245 [2023-08-04 06:11:07,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:11:07,319 INFO L124 PetriNetUnfolderBase]: 1158/1809 cut-off events. [2023-08-04 06:11:07,320 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-04 06:11:07,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3681 conditions, 1809 events. 1158/1809 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8900 event pairs, 782 based on Foata normal form. 0/1580 useless extension candidates. Maximal degree in co-relation 3665. Up to 1508 conditions per place. [2023-08-04 06:11:07,330 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 35 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-04 06:11:07,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 179 flow [2023-08-04 06:11:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:11:07,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:11:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-04 06:11:07,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508843537414966 [2023-08-04 06:11:07,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-04 06:11:07,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-04 06:11:07,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:11:07,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-04 06:11:07,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,338 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 83 flow. Second operand 3 states and 374 transitions. [2023-08-04 06:11:07,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 179 flow [2023-08-04 06:11:07,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 175 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:11:07,340 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 87 flow [2023-08-04 06:11:07,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-08-04 06:11:07,341 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 5 predicate places. [2023-08-04 06:11:07,341 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 87 flow [2023-08-04 06:11:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:07,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:11:07,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 06:11:07,548 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,SelfDestructingSolverStorable2 [2023-08-04 06:11:07,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:11:07,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:07,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1507605081, now seen corresponding path program 1 times [2023-08-04 06:11:07,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:07,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518476331] [2023-08-04 06:11:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:07,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:11:07,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:11:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518476331] [2023-08-04 06:11:07,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518476331] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:11:07,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284330640] [2023-08-04 06:11:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:07,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:11:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:11:07,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:11:07,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 06:11:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:07,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:11:07,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:11:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:11:07,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:11:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:11:07,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284330640] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:11:07,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:11:07,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:11:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467965686] [2023-08-04 06:11:07,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:11:07,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:11:07,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:11:07,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:11:07,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:11:07,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 245 [2023-08-04 06:11:07,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 87 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:11:07,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 245 [2023-08-04 06:11:07,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:11:07,795 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:11:07,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:07,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:11:07,796 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:11:07,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 06:11:07,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:11:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:11:07,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-08-04 06:11:07,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463265306122449 [2023-08-04 06:11:07,798 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-08-04 06:11:07,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-08-04 06:11:07,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:11:07,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-08-04 06:11:07,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,802 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,802 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 87 flow. Second operand 4 states and 454 transitions. [2023-08-04 06:11:07,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 06:11:07,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:11:07,803 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 06:11:07,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 06:11:07,804 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -19 predicate places. [2023-08-04 06:11:07,804 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 06:11:07,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:07,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:11:07,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:11:07,808 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:11:07,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:11:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:11:08,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:11:08,016 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:11:08,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 06:11:08,049 INFO L124 PetriNetUnfolderBase]: 30/459 cut-off events. [2023-08-04 06:11:08,049 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:08,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 459 events. 30/459 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2049 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-04 06:11:08,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 06:11:08,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 102 transitions, 219 flow [2023-08-04 06:11:08,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:11:08,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 102 transitions, 219 flow [2023-08-04 06:11:08,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 102 transitions, 219 flow [2023-08-04 06:11:08,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 102 transitions, 219 flow [2023-08-04 06:11:08,063 INFO L124 PetriNetUnfolderBase]: 6/227 cut-off events. [2023-08-04 06:11:08,064 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:08,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 227 events. 6/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 691 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 152. Up to 8 conditions per place. [2023-08-04 06:11:08,065 INFO L119 LiptonReduction]: Number of co-enabled transitions 1374 [2023-08-04 06:11:10,618 INFO L134 LiptonReduction]: Checked pairs total: 3382 [2023-08-04 06:11:10,618 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-04 06:11:10,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:11:10,621 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;@5115c36b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:11:10,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:11:10,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:11:10,624 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 06:11:10,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:10,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:10,624 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:11:10,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:11:10,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:10,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1875228561, now seen corresponding path program 1 times [2023-08-04 06:11:10,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334578742] [2023-08-04 06:11:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:11:10,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:11:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:11:10,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:11:10,660 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:11:10,660 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 06:11:10,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 06:11:10,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 06:11:10,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:11:10,661 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:11:10,662 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:11:10,662 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:11:10,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:11:10,684 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:11:10,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 157 transitions, 350 flow [2023-08-04 06:11:10,867 INFO L124 PetriNetUnfolderBase]: 93/1428 cut-off events. [2023-08-04 06:11:10,867 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:11:10,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 1428 events. 93/1428 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9999 event pairs, 0 based on Foata normal form. 0/1251 useless extension candidates. Maximal degree in co-relation 1024. Up to 54 conditions per place. [2023-08-04 06:11:10,872 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 157 transitions, 350 flow [2023-08-04 06:11:10,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 155 transitions, 338 flow [2023-08-04 06:11:10,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:11:10,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 155 transitions, 338 flow [2023-08-04 06:11:10,876 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 155 transitions, 338 flow [2023-08-04 06:11:10,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 155 transitions, 338 flow [2023-08-04 06:11:11,016 INFO L124 PetriNetUnfolderBase]: 93/1424 cut-off events. [2023-08-04 06:11:11,016 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-04 06:11:11,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 1424 events. 93/1424 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9946 event pairs, 0 based on Foata normal form. 0/1247 useless extension candidates. Maximal degree in co-relation 1018. Up to 54 conditions per place. [2023-08-04 06:11:11,053 INFO L119 LiptonReduction]: Number of co-enabled transitions 6520 [2023-08-04 06:11:14,884 INFO L134 LiptonReduction]: Checked pairs total: 19487 [2023-08-04 06:11:14,884 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-04 06:11:14,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:11:14,886 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;@5115c36b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:11:14,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:11:14,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:11:14,888 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-04 06:11:14,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:11:14,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:14,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:11:14,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:11:14,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:14,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2103668479, now seen corresponding path program 1 times [2023-08-04 06:11:14,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:14,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218026201] [2023-08-04 06:11:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:14,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:11:14,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:11:14,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218026201] [2023-08-04 06:11:14,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218026201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:11:14,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:11:14,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:11:14,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247895883] [2023-08-04 06:11:14,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:11:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:11:14,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:11:14,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:11:14,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:11:14,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 277 [2023-08-04 06:11:14,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:14,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:11:14,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 277 [2023-08-04 06:11:14,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:11:41,684 INFO L124 PetriNetUnfolderBase]: 206750/284013 cut-off events. [2023-08-04 06:11:41,685 INFO L125 PetriNetUnfolderBase]: For 4773/4773 co-relation queries the response was YES. [2023-08-04 06:11:42,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552080 conditions, 284013 events. 206750/284013 cut-off events. For 4773/4773 co-relation queries the response was YES. Maximal size of possible extension queue 9074. Compared 2176053 event pairs, 169944 based on Foata normal form. 0/244122 useless extension candidates. Maximal degree in co-relation 159483. Up to 261960 conditions per place. [2023-08-04 06:11:43,945 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 39 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-04 06:11:43,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 220 flow [2023-08-04 06:11:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:11:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:11:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-08-04 06:11:43,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234657039711191 [2023-08-04 06:11:43,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-08-04 06:11:43,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-08-04 06:11:43,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:11:43,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-08-04 06:11:43,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:43,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:43,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:43,954 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 130 flow. Second operand 3 states and 435 transitions. [2023-08-04 06:11:43,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 220 flow [2023-08-04 06:11:43,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 218 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 06:11:43,966 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 140 flow [2023-08-04 06:11:43,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-04 06:11:43,967 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-04 06:11:43,967 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 140 flow [2023-08-04 06:11:43,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:43,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:11:43,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:11:43,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 06:11:43,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:11:43,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:11:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash 930932382, now seen corresponding path program 1 times [2023-08-04 06:11:43,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:11:43,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791301395] [2023-08-04 06:11:43,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:43,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:11:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:11:44,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:11:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791301395] [2023-08-04 06:11:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791301395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:11:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165599399] [2023-08-04 06:11:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:11:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:11:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:11:44,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:11:44,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 06:11:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:11:44,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:11:44,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:11:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:11:44,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:11:44,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165599399] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:11:44,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:11:44,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:11:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974781067] [2023-08-04 06:11:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:11:44,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:11:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:11:44,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:11:44,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:11:44,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 277 [2023-08-04 06:11:44,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:11:44,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:11:44,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 277 [2023-08-04 06:11:44,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:07,653 INFO L124 PetriNetUnfolderBase]: 200318/278480 cut-off events. [2023-08-04 06:12:07,653 INFO L125 PetriNetUnfolderBase]: For 3435/3435 co-relation queries the response was YES. [2023-08-04 06:12:08,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536677 conditions, 278480 events. 200318/278480 cut-off events. For 3435/3435 co-relation queries the response was YES. Maximal size of possible extension queue 9080. Compared 2186277 event pairs, 160850 based on Foata normal form. 0/241172 useless extension candidates. Maximal degree in co-relation 536640. Up to 252785 conditions per place. [2023-08-04 06:12:09,705 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 45 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-04 06:12:09,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 252 flow [2023-08-04 06:12:09,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:09,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-04 06:12:09,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529482551143201 [2023-08-04 06:12:09,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-04 06:12:09,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-04 06:12:09,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:09,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-04 06:12:09,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:09,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:09,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:09,716 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 140 flow. Second operand 3 states and 440 transitions. [2023-08-04 06:12:09,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 252 flow [2023-08-04 06:12:09,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:12:09,719 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 150 flow [2023-08-04 06:12:09,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-08-04 06:12:09,720 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 5 predicate places. [2023-08-04 06:12:09,721 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 150 flow [2023-08-04 06:12:09,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:09,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:09,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:09,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 06:12:09,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:09,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:12:09,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:09,927 INFO L85 PathProgramCache]: Analyzing trace with hash 7331276, now seen corresponding path program 1 times [2023-08-04 06:12:09,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:09,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969190330] [2023-08-04 06:12:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:09,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:12:09,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:09,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969190330] [2023-08-04 06:12:09,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969190330] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:09,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529580803] [2023-08-04 06:12:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:09,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:09,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:09,970 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:12:09,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 06:12:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:10,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:12:10,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:12:10,072 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:12:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:12:10,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529580803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:12:10,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:12:10,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:12:10,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87899077] [2023-08-04 06:12:10,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:12:10,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:12:10,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:12:10,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:10,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-04 06:12:10,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:10,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:10,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-04 06:12:10,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:27,555 INFO L124 PetriNetUnfolderBase]: 156820/215450 cut-off events. [2023-08-04 06:12:27,555 INFO L125 PetriNetUnfolderBase]: For 2961/2961 co-relation queries the response was YES. [2023-08-04 06:12:28,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416101 conditions, 215450 events. 156820/215450 cut-off events. For 2961/2961 co-relation queries the response was YES. Maximal size of possible extension queue 7296. Compared 1606587 event pairs, 104208 based on Foata normal form. 3/187652 useless extension candidates. Maximal degree in co-relation 147450. Up to 196246 conditions per place. [2023-08-04 06:12:29,071 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 43 selfloop transitions, 3 changer transitions 1/61 dead transitions. [2023-08-04 06:12:29,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 260 flow [2023-08-04 06:12:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:12:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:12:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 567 transitions. [2023-08-04 06:12:29,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5117328519855595 [2023-08-04 06:12:29,073 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 567 transitions. [2023-08-04 06:12:29,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 567 transitions. [2023-08-04 06:12:29,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:29,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 567 transitions. [2023-08-04 06:12:29,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:29,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:29,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:29,076 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 150 flow. Second operand 4 states and 567 transitions. [2023-08-04 06:12:29,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 260 flow [2023-08-04 06:12:29,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:12:29,078 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 162 flow [2023-08-04 06:12:29,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2023-08-04 06:12:29,079 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-08-04 06:12:29,079 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 162 flow [2023-08-04 06:12:29,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:29,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:29,079 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:29,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 06:12:29,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:29,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:12:29,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash -2083198008, now seen corresponding path program 1 times [2023-08-04 06:12:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:29,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747862195] [2023-08-04 06:12:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:29,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:12:29,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:29,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747862195] [2023-08-04 06:12:29,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747862195] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:29,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380827361] [2023-08-04 06:12:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:29,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:29,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:29,336 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:12:29,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 06:12:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:29,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:12:29,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:29,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:12:29,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:12:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:12:29,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380827361] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:12:29,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:12:29,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:12:29,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850947172] [2023-08-04 06:12:29,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:12:29,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:12:29,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:29,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:12:29,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:29,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-04 06:12:29,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:29,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:29,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-04 06:12:29,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:45,260 INFO L124 PetriNetUnfolderBase]: 130384/177766 cut-off events. [2023-08-04 06:12:45,260 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2023-08-04 06:12:45,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343405 conditions, 177766 events. 130384/177766 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 6469. Compared 1293709 event pairs, 82690 based on Foata normal form. 36/155617 useless extension candidates. Maximal degree in co-relation 121484. Up to 160732 conditions per place. [2023-08-04 06:12:46,543 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 54 selfloop transitions, 3 changer transitions 1/72 dead transitions. [2023-08-04 06:12:46,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 72 transitions, 316 flow [2023-08-04 06:12:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:12:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:12:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-08-04 06:12:46,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216606498194946 [2023-08-04 06:12:46,545 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-08-04 06:12:46,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-08-04 06:12:46,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:46,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-08-04 06:12:46,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:46,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:46,548 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:46,548 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 162 flow. Second operand 4 states and 578 transitions. [2023-08-04 06:12:46,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 72 transitions, 316 flow [2023-08-04 06:12:46,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 309 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:12:46,551 INFO L231 Difference]: Finished difference. Result has 75 places, 53 transitions, 169 flow [2023-08-04 06:12:46,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=75, PETRI_TRANSITIONS=53} [2023-08-04 06:12:46,552 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-04 06:12:46,552 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 53 transitions, 169 flow [2023-08-04 06:12:46,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:46,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:46,552 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:46,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 06:12:46,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:46,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:12:46,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:46,758 INFO L85 PathProgramCache]: Analyzing trace with hash -562857673, now seen corresponding path program 1 times [2023-08-04 06:12:46,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:46,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597877149] [2023-08-04 06:12:46,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:46,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:12:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597877149] [2023-08-04 06:12:46,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597877149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:12:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:12:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132888861] [2023-08-04 06:12:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:46,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:12:46,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 277 [2023-08-04 06:12:46,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 53 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:46,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:46,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 277 [2023-08-04 06:12:46,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:59,890 INFO L124 PetriNetUnfolderBase]: 111928/153847 cut-off events. [2023-08-04 06:12:59,891 INFO L125 PetriNetUnfolderBase]: For 3133/3133 co-relation queries the response was YES. [2023-08-04 06:13:00,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296502 conditions, 153847 events. 111928/153847 cut-off events. For 3133/3133 co-relation queries the response was YES. Maximal size of possible extension queue 5371. Compared 1106377 event pairs, 22216 based on Foata normal form. 0/135550 useless extension candidates. Maximal degree in co-relation 104922. Up to 127009 conditions per place. [2023-08-04 06:13:00,991 INFO L140 encePairwiseOnDemand]: 272/277 looper letters, 55 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-04 06:13:00,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 328 flow [2023-08-04 06:13:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:13:00,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:13:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2023-08-04 06:13:00,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535499398315282 [2023-08-04 06:13:00,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2023-08-04 06:13:00,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2023-08-04 06:13:00,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:13:00,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2023-08-04 06:13:00,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:00,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:00,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:00,999 INFO L175 Difference]: Start difference. First operand has 75 places, 53 transitions, 169 flow. Second operand 3 states and 460 transitions. [2023-08-04 06:13:00,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 328 flow [2023-08-04 06:13:01,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 321 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:13:01,005 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 183 flow [2023-08-04 06:13:01,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2023-08-04 06:13:01,006 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-04 06:13:01,006 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 183 flow [2023-08-04 06:13:01,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:01,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:13:01,007 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:13:01,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 06:13:01,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:13:01,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:13:01,007 INFO L85 PathProgramCache]: Analyzing trace with hash -562845399, now seen corresponding path program 1 times [2023-08-04 06:13:01,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:13:01,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856133078] [2023-08-04 06:13:01,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:13:01,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:13:01,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:13:01,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:13:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:13:01,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856133078] [2023-08-04 06:13:01,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856133078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:13:01,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:13:01,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 06:13:01,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696051605] [2023-08-04 06:13:01,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:13:01,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:13:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:13:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:13:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:13:01,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 277 [2023-08-04 06:13:01,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:01,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:13:01,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 277 [2023-08-04 06:13:01,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:13:14,424 INFO L124 PetriNetUnfolderBase]: 110296/147031 cut-off events. [2023-08-04 06:13:14,424 INFO L125 PetriNetUnfolderBase]: For 9664/9664 co-relation queries the response was YES. [2023-08-04 06:13:15,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305614 conditions, 147031 events. 110296/147031 cut-off events. For 9664/9664 co-relation queries the response was YES. Maximal size of possible extension queue 5640. Compared 998822 event pairs, 102664 based on Foata normal form. 0/130930 useless extension candidates. Maximal degree in co-relation 107831. Up to 133924 conditions per place. [2023-08-04 06:13:15,560 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 54 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-04 06:13:15,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 328 flow [2023-08-04 06:13:15,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:13:15,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:13:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 06:13:15,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367027677496992 [2023-08-04 06:13:15,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 06:13:15,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 06:13:15,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:13:15,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 06:13:15,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:15,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:15,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:15,564 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 183 flow. Second operand 3 states and 446 transitions. [2023-08-04 06:13:15,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 328 flow [2023-08-04 06:13:15,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 70 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:13:15,585 INFO L231 Difference]: Finished difference. Result has 77 places, 56 transitions, 192 flow [2023-08-04 06:13:15,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=77, PETRI_TRANSITIONS=56} [2023-08-04 06:13:15,586 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 13 predicate places. [2023-08-04 06:13:15,586 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 56 transitions, 192 flow [2023-08-04 06:13:15,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:15,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:13:15,586 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:13:15,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 06:13:15,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:13:15,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:13:15,587 INFO L85 PathProgramCache]: Analyzing trace with hash 311925219, now seen corresponding path program 1 times [2023-08-04 06:13:15,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:13:15,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275332956] [2023-08-04 06:13:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:13:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:13:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:13:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:13:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:13:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275332956] [2023-08-04 06:13:15,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275332956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:13:15,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245663328] [2023-08-04 06:13:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:13:15,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:13:15,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:13:15,629 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:13:15,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 06:13:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:13:15,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:13:15,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:13:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:13:15,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:13:15,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:13:15,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245663328] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:13:15,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:13:15,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:13:15,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83699430] [2023-08-04 06:13:15,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:13:15,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:13:15,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:13:15,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:13:15,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:13:15,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 277 [2023-08-04 06:13:15,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 56 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:15,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:13:15,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 277 [2023-08-04 06:13:15,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:13:26,712 INFO L124 PetriNetUnfolderBase]: 102040/130855 cut-off events. [2023-08-04 06:13:26,712 INFO L125 PetriNetUnfolderBase]: For 15244/15244 co-relation queries the response was YES. [2023-08-04 06:13:27,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282911 conditions, 130855 events. 102040/130855 cut-off events. For 15244/15244 co-relation queries the response was YES. Maximal size of possible extension queue 5417. Compared 817841 event pairs, 52168 based on Foata normal form. 576/120838 useless extension candidates. Maximal degree in co-relation 99751. Up to 86596 conditions per place. [2023-08-04 06:13:28,004 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 73 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-04 06:13:28,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 91 transitions, 430 flow [2023-08-04 06:13:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:13:28,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:13:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-08-04 06:13:28,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342960288808665 [2023-08-04 06:13:28,013 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-08-04 06:13:28,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-08-04 06:13:28,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:13:28,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-08-04 06:13:28,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:28,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:28,025 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:28,025 INFO L175 Difference]: Start difference. First operand has 77 places, 56 transitions, 192 flow. Second operand 4 states and 592 transitions. [2023-08-04 06:13:28,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 91 transitions, 430 flow [2023-08-04 06:13:28,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 91 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:13:28,032 INFO L231 Difference]: Finished difference. Result has 81 places, 57 transitions, 210 flow [2023-08-04 06:13:28,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=81, PETRI_TRANSITIONS=57} [2023-08-04 06:13:28,033 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2023-08-04 06:13:28,033 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 57 transitions, 210 flow [2023-08-04 06:13:28,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:13:28,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:13:28,033 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:13:28,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 06:13:28,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:13:28,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:13:28,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:13:28,234 INFO L85 PathProgramCache]: Analyzing trace with hash 837290077, now seen corresponding path program 1 times [2023-08-04 06:13:28,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:13:28,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720612960] [2023-08-04 06:13:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:13:28,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:13:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:13:28,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:13:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:13:28,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:13:28,336 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:13:28,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 06:13:28,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 06:13:28,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 06:13:28,336 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 06:13:28,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 06:13:28,337 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:13:28,337 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 06:13:28,338 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 06:13:28,338 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 06:13:28,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 06:13:28 BasicIcfg [2023-08-04 06:13:28,415 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 06:13:28,415 INFO L158 Benchmark]: Toolchain (without parser) took 147887.50ms. Allocated memory was 551.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 510.4MB in the beginning and 12.7GB in the end (delta: -12.1GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-08-04 06:13:28,415 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 390.1MB. Free memory was 343.2MB in the beginning and 343.0MB in the end (delta: 194.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 06:13:28,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.71ms. Allocated memory is still 551.6MB. Free memory was 510.4MB in the beginning and 486.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 06:13:28,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.95ms. Allocated memory is still 551.6MB. Free memory was 486.7MB in the beginning and 483.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 06:13:28,416 INFO L158 Benchmark]: Boogie Preprocessor took 48.95ms. Allocated memory is still 551.6MB. Free memory was 483.9MB in the beginning and 481.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:13:28,416 INFO L158 Benchmark]: RCFGBuilder took 552.48ms. Allocated memory is still 551.6MB. Free memory was 481.8MB in the beginning and 446.1MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-08-04 06:13:28,416 INFO L158 Benchmark]: TraceAbstraction took 146772.16ms. Allocated memory was 551.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 445.4MB in the beginning and 12.7GB in the end (delta: -12.2GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. [2023-08-04 06:13:28,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 390.1MB. Free memory was 343.2MB in the beginning and 343.0MB in the end (delta: 194.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 449.71ms. Allocated memory is still 551.6MB. Free memory was 510.4MB in the beginning and 486.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.95ms. Allocated memory is still 551.6MB. Free memory was 486.7MB in the beginning and 483.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.95ms. Allocated memory is still 551.6MB. Free memory was 483.9MB in the beginning and 481.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 552.48ms. Allocated memory is still 551.6MB. Free memory was 481.8MB in the beginning and 446.1MB in the end (delta: 35.6MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 146772.16ms. Allocated memory was 551.6MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 445.4MB in the beginning and 12.7GB in the end (delta: -12.2GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 131 PlacesBefore, 37 PlacesAfterwards, 129 TransitionsBefore, 30 TransitionsAfterwards, 2670 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 5 ChoiceCompositions, 114 TotalNumberOfCompositions, 6747 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3009, independent: 2824, independent conditional: 0, independent unconditional: 2824, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1428, independent: 1385, independent conditional: 0, independent unconditional: 1385, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3009, independent: 1439, independent conditional: 0, independent unconditional: 1439, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1428, unknown conditional: 0, unknown unconditional: 1428] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 109, Positive conditional cache size: 0, Positive unconditional cache size: 109, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 107 PlacesBefore, 33 PlacesAfterwards, 102 TransitionsBefore, 26 TransitionsAfterwards, 1374 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 3382 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1665, independent: 1541, independent conditional: 0, independent unconditional: 1541, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 684, independent: 669, independent conditional: 0, independent unconditional: 669, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1665, independent: 872, independent conditional: 0, independent unconditional: 872, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 684, unknown conditional: 0, unknown unconditional: 684] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 163 PlacesBefore, 64 PlacesAfterwards, 155 TransitionsBefore, 51 TransitionsAfterwards, 6520 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 5 ChoiceCompositions, 120 TotalNumberOfCompositions, 19487 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6801, independent: 6489, independent conditional: 0, independent unconditional: 6489, dependent: 312, dependent conditional: 0, dependent unconditional: 312, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3228, independent: 3170, independent conditional: 0, independent unconditional: 3170, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6801, independent: 3319, independent conditional: 0, independent unconditional: 3319, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 3228, unknown conditional: 0, unknown unconditional: 3228] , Statistics on independence cache: Total cache size (in pairs): 328, Positive cache size: 303, Positive conditional cache size: 0, Positive unconditional cache size: 303, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L715] 0 int a = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L722] 0 _Bool y$flush_delayed; [L723] 0 int y$mem_tmp; [L724] 0 _Bool y$r_buff0_thd0; [L725] 0 _Bool y$r_buff0_thd1; [L726] 0 _Bool y$r_buff0_thd2; [L727] 0 _Bool y$r_buff0_thd3; [L728] 0 _Bool y$r_buff1_thd0; [L729] 0 _Bool y$r_buff1_thd1; [L730] 0 _Bool y$r_buff1_thd2; [L731] 0 _Bool y$r_buff1_thd3; [L732] 0 _Bool y$read_delayed; [L733] 0 int *y$read_delayed_var; [L734] 0 int y$w_buff0; [L735] 0 _Bool y$w_buff0_used; [L736] 0 int y$w_buff1; [L737] 0 _Bool y$w_buff1_used; [L739] 0 int z = 0; [L740] 0 _Bool weak$$choice0; [L741] 0 _Bool weak$$choice2; [L823] 0 pthread_t t1196[2]; [L824] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] COND TRUE 0 asdf<2 [L824] FCALL, FORK 0 pthread_create(&t1196[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1196[asdf], ((void *)0), P0, ((void *)0))=-5, t1196={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] COND TRUE 0 asdf<2 [L824] FCALL, FORK 0 pthread_create(&t1196[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1196[asdf], ((void *)0), P0, ((void *)0))=-4, t1196={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] COND FALSE 0 !(asdf<2) [L825] 0 pthread_t t1197[2]; [L826] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, t1197={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t1197[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1197[asdf], ((void *)0), P1, ((void *)0))=-3, t1196={5:0}, t1197={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, t1197={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t1197[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1197[asdf], ((void *)0), P1, ((void *)0))=-2, t1196={5:0}, t1197={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, t1197={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] COND FALSE 0 !(asdf<2) [L827] 0 pthread_t t1198[2]; [L828] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, t1197={6:0}, t1198={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t1198[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1198[asdf], ((void *)0), P2, ((void *)0))=-1, t1196={5:0}, t1197={6:0}, t1198={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L780] 5 y$w_buff1 = y$w_buff0 [L781] 5 y$w_buff0 = 2 [L782] 5 y$w_buff1_used = y$w_buff0_used [L783] 5 y$w_buff0_used = (_Bool)1 [L784] CALL 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L784] RET 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L785] 5 y$r_buff1_thd0 = y$r_buff0_thd0 [L786] 5 y$r_buff1_thd1 = y$r_buff0_thd1 [L787] 5 y$r_buff1_thd2 = y$r_buff0_thd2 [L788] 5 y$r_buff1_thd3 = y$r_buff0_thd3 [L789] 5 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L828] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1196={5:0}, t1197={6:0}, t1198={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t1198[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1198[asdf], ((void *)0), P2, ((void *)0))=0, t1196={5:0}, t1197={6:0}, t1198={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L780] 6 y$w_buff1 = y$w_buff0 [L781] 6 y$w_buff0 = 2 [L782] 6 y$w_buff1_used = y$w_buff0_used [L783] 6 y$w_buff0_used = (_Bool)1 [L784] CALL 6 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 6 !expression [L18] 6 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=2, y$w_buff1_used=1, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 153 locations, 6 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: 6.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 8 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred in iteration=3, InterpolantAutomatonStates: 13, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 566 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 7/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 179 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 137.7s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 131.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 167 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 687 IncrementalHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 6 mSDtfsCounter, 687 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred in iteration=7, InterpolantAutomatonStates: 24, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 821 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 82/92 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 153 locations, 6 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: 2.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 06:13:28,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...