/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_mix054_power.oepc_power.opt_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:17:20,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:17:20,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:17:20,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:17:20,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:17:20,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:17:20,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:17:20,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:17:20,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:17:20,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:17:20,168 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:17:20,168 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:17:20,169 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:17:20,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:17:20,169 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:17:20,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:17:20,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:17:20,170 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:17:20,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:17:20,171 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:17:20,171 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:17:20,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:17:20,176 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:17:20,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:17:20,179 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:17:20,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:17:20,180 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:17:20,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:17:20,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:17:20,181 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:17:20,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:17:20,181 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:17:20,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:17:20,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:17:20,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:17:20,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:17:20,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:17:20,183 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:17:20,183 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:17:20,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:17:20,183 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:17:20,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:17:20,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:17:20,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:17:20,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:17:20,416 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:17:20,416 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:17:20,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix054_power.oepc_power.opt_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:17:21,550 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:17:21,832 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:17:21,832 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix054_power.oepc_power.opt_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:17:21,846 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c5571ff/ed022cbc4a384781a6c0316bd93ef02e/FLAGad0e5a651 [2023-08-04 06:17:21,858 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8c5571ff/ed022cbc4a384781a6c0316bd93ef02e [2023-08-04 06:17:21,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:17:21,861 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:17:21,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:17:21,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:17:21,865 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:17:21,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:17:21" (1/1) ... [2023-08-04 06:17:21,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4542b979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:21, skipping insertion in model container [2023-08-04 06:17:21,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:17:21" (1/1) ... [2023-08-04 06:17:21,904 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:17:22,045 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_mix054_power.oepc_power.opt_pso.oepc_rmo.oepc_bound2.i[979,992] [2023-08-04 06:17:22,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:17:22,185 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:17:22,199 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_mix054_power.oepc_power.opt_pso.oepc_rmo.oepc_bound2.i[979,992] [2023-08-04 06:17:22,217 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:17:22,218 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:17:22,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:17:22,288 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:17:22,288 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:17:22,294 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:17:22,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22 WrapperNode [2023-08-04 06:17:22,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:17:22,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:17:22,296 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:17:22,296 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:17:22,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,353 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 128 [2023-08-04 06:17:22,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:17:22,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:17:22,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:17:22,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:17:22,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,381 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:17:22,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:17:22,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:17:22,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:17:22,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (1/1) ... [2023-08-04 06:17:22,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:17:22,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:22,437 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 06:17:22,438 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 06:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:17:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:17:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:17:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:17:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:17:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:17:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:17:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:17:22,467 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 06:17:22,574 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:17:22,576 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:17:22,813 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:17:22,916 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:17:22,916 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 06:17:22,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:17:22 BoogieIcfgContainer [2023-08-04 06:17:22,918 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:17:22,920 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:17:22,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:17:22,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:17:22,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:17:21" (1/3) ... [2023-08-04 06:17:22,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a293af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:17:22, skipping insertion in model container [2023-08-04 06:17:22,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:17:22" (2/3) ... [2023-08-04 06:17:22,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a293af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:17:22, skipping insertion in model container [2023-08-04 06:17:22,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:17:22" (3/3) ... [2023-08-04 06:17:22,925 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix054_power.oepc_power.opt_pso.oepc_rmo.oepc_bound2.i [2023-08-04 06:17:22,932 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:17:22,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:17:22,940 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:17:22,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:17:22,987 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:17:23,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:23,107 INFO L124 PetriNetUnfolderBase]: 14/216 cut-off events. [2023-08-04 06:17:23,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:23,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 216 events. 14/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 591 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 129. Up to 8 conditions per place. [2023-08-04 06:17:23,112 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:23,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:23,126 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:17:23,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:23,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:23,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:23,198 INFO L124 PetriNetUnfolderBase]: 14/216 cut-off events. [2023-08-04 06:17:23,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:23,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 216 events. 14/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 591 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 129. Up to 8 conditions per place. [2023-08-04 06:17:23,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 1462 [2023-08-04 06:17:25,945 INFO L134 LiptonReduction]: Checked pairs total: 3510 [2023-08-04 06:17:25,946 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-04 06:17:25,958 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:17:25,963 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;@38f06e29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:17:25,964 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:17:25,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:17:25,967 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 06:17:25,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:25,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:25,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:17:25,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:25,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:25,972 INFO L85 PathProgramCache]: Analyzing trace with hash 14116500, now seen corresponding path program 1 times [2023-08-04 06:17:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:25,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729278953] [2023-08-04 06:17:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:25,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:26,364 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 06:17:26,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:26,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729278953] [2023-08-04 06:17:26,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729278953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:26,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:17:26,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:17:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433157541] [2023-08-04 06:17:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:26,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:26,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:17:26,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 189 [2023-08-04 06:17:26,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:26,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:26,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 189 [2023-08-04 06:17:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:26,591 INFO L124 PetriNetUnfolderBase]: 325/663 cut-off events. [2023-08-04 06:17:26,592 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 06:17:26,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 663 events. 325/663 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3233 event pairs, 64 based on Foata normal form. 30/598 useless extension candidates. Maximal degree in co-relation 1098. Up to 430 conditions per place. [2023-08-04 06:17:26,597 INFO L140 encePairwiseOnDemand]: 185/189 looper letters, 30 selfloop transitions, 2 changer transitions 7/40 dead transitions. [2023-08-04 06:17:26,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 167 flow [2023-08-04 06:17:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-08-04 06:17:26,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308641975308642 [2023-08-04 06:17:26,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-08-04 06:17:26,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-08-04 06:17:26,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:26,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-08-04 06:17:26,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 06:17:26,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 06:17:26,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 06:17:26,623 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 62 flow. Second operand 3 states and 301 transitions. [2023-08-04 06:17:26,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 167 flow [2023-08-04 06:17:26,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 40 transitions, 167 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:17:26,628 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 50 flow [2023-08-04 06:17:26,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-04 06:17:26,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-04 06:17:26,632 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 50 flow [2023-08-04 06:17:26,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:26,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:26,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:17:26,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:17:26,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:26,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash 673991597, now seen corresponding path program 1 times [2023-08-04 06:17:26,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:26,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741462383] [2023-08-04 06:17:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:26,683 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 06:17:26,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:26,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741462383] [2023-08-04 06:17:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741462383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:26,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:17:26,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:17:26,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883799868] [2023-08-04 06:17:26,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:26,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:26,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:26,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:26,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:17:26,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 189 [2023-08-04 06:17:26,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 06:17:26,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:26,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 189 [2023-08-04 06:17:26,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:26,775 INFO L124 PetriNetUnfolderBase]: 225/404 cut-off events. [2023-08-04 06:17:26,776 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-04 06:17:26,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 404 events. 225/404 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1572 event pairs, 96 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 853. Up to 398 conditions per place. [2023-08-04 06:17:26,780 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 20 selfloop transitions, 2 changer transitions 1/24 dead transitions. [2023-08-04 06:17:26,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 106 flow [2023-08-04 06:17:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:26,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:26,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-08-04 06:17:26,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2023-08-04 06:17:26,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-08-04 06:17:26,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-08-04 06:17:26,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:26,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-08-04 06:17:26,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 06:17:26,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 06:17:26,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 06:17:26,792 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 50 flow. Second operand 3 states and 276 transitions. [2023-08-04 06:17:26,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 106 flow [2023-08-04 06:17:26,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:17:26,796 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 54 flow [2023-08-04 06:17:26,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-04 06:17:26,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-04 06:17:26,801 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 54 flow [2023-08-04 06:17:26,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 06:17:26,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:26,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:26,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 06:17:26,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:26,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1349831551, now seen corresponding path program 1 times [2023-08-04 06:17:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894869623] [2023-08-04 06:17:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:26,884 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 06:17:26,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:26,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894869623] [2023-08-04 06:17:26,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894869623] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:17:26,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791719568] [2023-08-04 06:17:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:26,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:26,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:26,888 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 06:17:26,893 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 06:17:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:26,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:17:26,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:17:26,985 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 06:17:26,985 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:17:26,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791719568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:26,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:17:26,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:17:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532941232] [2023-08-04 06:17:26,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:26,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:26,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:26,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:26,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:17:27,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 189 [2023-08-04 06:17:27,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 06:17:27,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:27,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 189 [2023-08-04 06:17:27,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:27,080 INFO L124 PetriNetUnfolderBase]: 213/378 cut-off events. [2023-08-04 06:17:27,081 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 06:17:27,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 378 events. 213/378 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1505 event pairs, 96 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 767. Up to 327 conditions per place. [2023-08-04 06:17:27,083 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 24 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2023-08-04 06:17:27,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 124 flow [2023-08-04 06:17:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:27,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-04 06:17:27,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2023-08-04 06:17:27,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-04 06:17:27,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-04 06:17:27,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:27,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-04 06:17:27,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:27,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 06:17:27,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 06:17:27,087 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 54 flow. Second operand 3 states and 280 transitions. [2023-08-04 06:17:27,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 124 flow [2023-08-04 06:17:27,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:17:27,088 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 58 flow [2023-08-04 06:17:27,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-04 06:17:27,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-04 06:17:27,090 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 58 flow [2023-08-04 06:17:27,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 06:17:27,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:27,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:27,100 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 06:17:27,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:27,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:17:27,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash 388291668, now seen corresponding path program 1 times [2023-08-04 06:17:27,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:27,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483955738] [2023-08-04 06:17:27,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:27,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:27,350 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 06:17:27,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:27,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483955738] [2023-08-04 06:17:27,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483955738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:17:27,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629989161] [2023-08-04 06:17:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:27,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:17:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:17:27,352 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 06:17:27,380 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 06:17:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:27,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:17:27,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:17:27,487 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 06:17:27,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:17:27,511 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 06:17:27,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629989161] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:17:27,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:17:27,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:17:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954015536] [2023-08-04 06:17:27,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:17:27,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:17:27,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:17:27,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:17:27,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 189 [2023-08-04 06:17:27,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 06:17:27,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:27,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 189 [2023-08-04 06:17:27,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:27,553 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 06:17:27,553 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 06:17:27,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 21 events. 6/21 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 06:17:27,554 INFO L140 encePairwiseOnDemand]: 186/189 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 06:17:27,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 51 flow [2023-08-04 06:17:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:17:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:17:27,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-08-04 06:17:27,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2023-08-04 06:17:27,555 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-08-04 06:17:27,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-08-04 06:17:27,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:27,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-08-04 06:17:27,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:27,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states 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 06:17:27,561 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states 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 06:17:27,561 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 58 flow. Second operand 4 states and 344 transitions. [2023-08-04 06:17:27,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 51 flow [2023-08-04 06:17:27,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:17:27,561 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 06:17:27,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 06:17:27,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -13 predicate places. [2023-08-04 06:17:27,562 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 06:17:27,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 06:17:27,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:17:27,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:17:27,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:17:27,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:17:27,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 06:17:27,771 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:17:27,773 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:17:27,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:27,797 INFO L124 PetriNetUnfolderBase]: 14/216 cut-off events. [2023-08-04 06:17:27,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:27,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 216 events. 14/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 591 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 129. Up to 8 conditions per place. [2023-08-04 06:17:27,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 101 transitions, 212 flow [2023-08-04 06:17:27,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 74 transitions, 158 flow [2023-08-04 06:17:27,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:17:27,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 74 transitions, 158 flow [2023-08-04 06:17:27,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 74 transitions, 158 flow [2023-08-04 06:17:27,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 74 transitions, 158 flow [2023-08-04 06:17:27,809 INFO L124 PetriNetUnfolderBase]: 2/108 cut-off events. [2023-08-04 06:17:27,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:27,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 153 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-04 06:17:27,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 652 [2023-08-04 06:17:29,921 INFO L134 LiptonReduction]: Checked pairs total: 1516 [2023-08-04 06:17:29,921 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-04 06:17:29,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:17:29,924 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;@38f06e29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:17:29,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 06:17:29,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:17:29,927 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 06:17:29,927 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:29,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:29,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:17:29,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 06:17:29,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:29,927 INFO L85 PathProgramCache]: Analyzing trace with hash 495914530, now seen corresponding path program 1 times [2023-08-04 06:17:29,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:29,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059861246] [2023-08-04 06:17:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:29,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:29,964 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 06:17:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:29,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059861246] [2023-08-04 06:17:29,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059861246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:29,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:17:29,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:17:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098869579] [2023-08-04 06:17:29,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:29,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:29,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:29,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:29,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:17:29,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 162 [2023-08-04 06:17:29,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:29,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:29,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 162 [2023-08-04 06:17:29,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:30,023 INFO L124 PetriNetUnfolderBase]: 72/155 cut-off events. [2023-08-04 06:17:30,023 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:30,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 155 events. 72/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 570 event pairs, 20 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 303. Up to 138 conditions per place. [2023-08-04 06:17:30,024 INFO L140 encePairwiseOnDemand]: 159/162 looper letters, 18 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-08-04 06:17:30,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 96 flow [2023-08-04 06:17:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-04 06:17:30,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5617283950617284 [2023-08-04 06:17:30,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-04 06:17:30,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-04 06:17:30,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:30,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-04 06:17:30,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:30,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 06:17:30,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states 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 06:17:30,028 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 46 flow. Second operand 3 states and 273 transitions. [2023-08-04 06:17:30,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 96 flow [2023-08-04 06:17:30,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:17:30,030 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 54 flow [2023-08-04 06:17:30,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-04 06:17:30,033 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-04 06:17:30,034 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 54 flow [2023-08-04 06:17:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:17:30,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:30,034 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:17:30,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:17:30,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 06:17:30,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1808311020, now seen corresponding path program 1 times [2023-08-04 06:17:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:30,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437328455] [2023-08-04 06:17:30,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:30,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:17:30,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:17:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:17:30,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:17:30,077 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:17:30,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 06:17:30,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 06:17:30,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 06:17:30,078 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 06:17:30,080 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-04 06:17:30,080 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:17:30,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:17:30,102 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:17:30,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 118 transitions, 260 flow [2023-08-04 06:17:30,140 INFO L124 PetriNetUnfolderBase]: 30/446 cut-off events. [2023-08-04 06:17:30,141 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 06:17:30,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 446 events. 30/446 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1857 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 324. Up to 18 conditions per place. [2023-08-04 06:17:30,142 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 118 transitions, 260 flow [2023-08-04 06:17:30,143 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 118 transitions, 260 flow [2023-08-04 06:17:30,143 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:17:30,143 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 118 transitions, 260 flow [2023-08-04 06:17:30,144 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 118 transitions, 260 flow [2023-08-04 06:17:30,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 118 transitions, 260 flow [2023-08-04 06:17:30,174 INFO L124 PetriNetUnfolderBase]: 30/446 cut-off events. [2023-08-04 06:17:30,174 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 06:17:30,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 446 events. 30/446 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1857 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 324. Up to 18 conditions per place. [2023-08-04 06:17:30,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 3436 [2023-08-04 06:17:32,704 INFO L134 LiptonReduction]: Checked pairs total: 10141 [2023-08-04 06:17:32,705 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-04 06:17:32,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:17:32,707 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;@38f06e29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:17:32,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:17:32,709 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:17:32,709 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 06:17:32,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:17:32,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:32,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 06:17:32,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:17:32,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash 23013854, now seen corresponding path program 1 times [2023-08-04 06:17:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941037068] [2023-08-04 06:17:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:32,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:32,765 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 06:17:32,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:32,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941037068] [2023-08-04 06:17:32,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941037068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:32,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:17:32,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:17:32,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910595598] [2023-08-04 06:17:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:32,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:32,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:32,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:17:32,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 211 [2023-08-04 06:17:32,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 06:17:32,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:32,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 211 [2023-08-04 06:17:32,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:35,759 INFO L124 PetriNetUnfolderBase]: 20420/29722 cut-off events. [2023-08-04 06:17:35,760 INFO L125 PetriNetUnfolderBase]: For 446/446 co-relation queries the response was YES. [2023-08-04 06:17:35,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58233 conditions, 29722 events. 20420/29722 cut-off events. For 446/446 co-relation queries the response was YES. Maximal size of possible extension queue 1051. Compared 193515 event pairs, 3926 based on Foata normal form. 837/26332 useless extension candidates. Maximal degree in co-relation 49593. Up to 26049 conditions per place. [2023-08-04 06:17:35,930 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 53 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-08-04 06:17:35,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 273 flow [2023-08-04 06:17:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:35,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-04 06:17:35,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545023696682464 [2023-08-04 06:17:35,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-04 06:17:35,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-04 06:17:35,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:35,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-04 06:17:35,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 06:17:35,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 06:17:35,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 06:17:35,938 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 102 flow. Second operand 3 states and 351 transitions. [2023-08-04 06:17:35,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 273 flow [2023-08-04 06:17:35,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 269 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 06:17:35,943 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 117 flow [2023-08-04 06:17:35,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-04 06:17:35,944 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-04 06:17:35,945 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 117 flow [2023-08-04 06:17:35,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 06:17:35,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:35,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 06:17:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 06:17:35,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:17:35,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:35,946 INFO L85 PathProgramCache]: Analyzing trace with hash 635552712, now seen corresponding path program 1 times [2023-08-04 06:17:35,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:35,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144200344] [2023-08-04 06:17:35,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:35,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:17:35,979 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 06:17:35,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:17:35,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144200344] [2023-08-04 06:17:35,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144200344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:17:35,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:17:35,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:17:35,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376611802] [2023-08-04 06:17:35,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:17:35,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:17:35,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:17:35,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:17:35,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:17:35,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-04 06:17:35,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 06:17:35,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:17:35,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-04 06:17:35,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:17:38,375 INFO L124 PetriNetUnfolderBase]: 20048/27633 cut-off events. [2023-08-04 06:17:38,375 INFO L125 PetriNetUnfolderBase]: For 2909/2909 co-relation queries the response was YES. [2023-08-04 06:17:38,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60620 conditions, 27633 events. 20048/27633 cut-off events. For 2909/2909 co-relation queries the response was YES. Maximal size of possible extension queue 969. Compared 159296 event pairs, 15274 based on Foata normal form. 0/23482 useless extension candidates. Maximal degree in co-relation 39242. Up to 27351 conditions per place. [2023-08-04 06:17:38,517 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 37 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-04 06:17:38,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 208 flow [2023-08-04 06:17:38,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:17:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:17:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-08-04 06:17:38,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055292259083728 [2023-08-04 06:17:38,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-08-04 06:17:38,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-08-04 06:17:38,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:17:38,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-08-04 06:17:38,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 06:17:38,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 06:17:38,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 06:17:38,522 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 117 flow. Second operand 3 states and 320 transitions. [2023-08-04 06:17:38,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 208 flow [2023-08-04 06:17:38,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:17:38,525 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 126 flow [2023-08-04 06:17:38,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-04 06:17:38,526 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-04 06:17:38,526 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 126 flow [2023-08-04 06:17:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 06:17:38,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:17:38,526 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:17:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 06:17:38,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:17:38,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:17:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1776560175, now seen corresponding path program 1 times [2023-08-04 06:17:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:17:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514459943] [2023-08-04 06:17:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:17:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:17:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:17:38,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:17:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:17:38,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:17:38,575 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:17:38,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 06:17:38,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 06:17:38,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 06:17:38,576 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 06:17:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 06:17:38,576 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 06:17:38,577 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 06:17:38,579 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 06:17:38,579 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 06:17:38,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 06:17:38 BasicIcfg [2023-08-04 06:17:38,627 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 06:17:38,628 INFO L158 Benchmark]: Toolchain (without parser) took 16766.11ms. Allocated memory was 515.9MB in the beginning and 1.3GB in the end (delta: 830.5MB). Free memory was 467.5MB in the beginning and 567.6MB in the end (delta: -100.1MB). Peak memory consumption was 730.7MB. Max. memory is 16.0GB. [2023-08-04 06:17:38,628 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory is still 312.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 06:17:38,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.63ms. Allocated memory is still 515.9MB. Free memory was 467.2MB in the beginning and 444.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 06:17:38,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.18ms. Allocated memory is still 515.9MB. Free memory was 444.4MB in the beginning and 442.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:17:38,630 INFO L158 Benchmark]: Boogie Preprocessor took 34.77ms. Allocated memory is still 515.9MB. Free memory was 442.0MB in the beginning and 440.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:17:38,630 INFO L158 Benchmark]: RCFGBuilder took 528.35ms. Allocated memory is still 515.9MB. Free memory was 440.2MB in the beginning and 465.8MB in the end (delta: -25.6MB). Peak memory consumption was 23.0MB. Max. memory is 16.0GB. [2023-08-04 06:17:38,631 INFO L158 Benchmark]: TraceAbstraction took 15707.02ms. Allocated memory was 515.9MB in the beginning and 1.3GB in the end (delta: 830.5MB). Free memory was 464.7MB in the beginning and 567.6MB in the end (delta: -102.9MB). Peak memory consumption was 726.6MB. Max. memory is 16.0GB. [2023-08-04 06:17:38,632 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory is still 312.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 432.63ms. Allocated memory is still 515.9MB. Free memory was 467.2MB in the beginning and 444.4MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.18ms. Allocated memory is still 515.9MB. Free memory was 444.4MB in the beginning and 442.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.77ms. Allocated memory is still 515.9MB. Free memory was 442.0MB in the beginning and 440.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 528.35ms. Allocated memory is still 515.9MB. Free memory was 440.2MB in the beginning and 465.8MB in the end (delta: -25.6MB). Peak memory consumption was 23.0MB. Max. memory is 16.0GB. * TraceAbstraction took 15707.02ms. Allocated memory was 515.9MB in the beginning and 1.3GB in the end (delta: 830.5MB). Free memory was 464.7MB in the beginning and 567.6MB in the end (delta: -102.9MB). Peak memory consumption was 726.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 102 PlacesBefore, 30 PlacesAfterwards, 101 TransitionsBefore, 26 TransitionsAfterwards, 1462 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 88 TotalNumberOfCompositions, 3510 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1557, independent: 1434, independent conditional: 0, independent unconditional: 1434, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 746, independent: 722, independent conditional: 0, independent unconditional: 722, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1557, independent: 712, independent conditional: 0, independent unconditional: 712, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 746, unknown conditional: 0, unknown unconditional: 746] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 78 PlacesBefore, 23 PlacesAfterwards, 74 TransitionsBefore, 18 TransitionsAfterwards, 652 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 1516 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 776, independent: 695, independent conditional: 0, independent unconditional: 695, dependent: 81, dependent conditional: 0, dependent unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 330, independent: 319, independent conditional: 0, independent unconditional: 319, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 776, independent: 376, independent conditional: 0, independent unconditional: 376, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 330, unknown conditional: 0, unknown unconditional: 330] , Statistics on independence cache: Total cache size (in pairs): 38, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 123 PlacesBefore, 47 PlacesAfterwards, 118 TransitionsBefore, 39 TransitionsAfterwards, 3436 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 93 TotalNumberOfCompositions, 10141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4125, independent: 3912, independent conditional: 0, independent unconditional: 3912, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1710, independent: 1664, independent conditional: 0, independent unconditional: 1664, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4125, independent: 2248, independent conditional: 0, independent unconditional: 2248, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 1710, unknown conditional: 0, unknown unconditional: 1710] , Statistics on independence cache: Total cache size (in pairs): 183, Positive cache size: 166, Positive conditional cache size: 0, Positive unconditional cache size: 166, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L717] 0 _Bool y$flush_delayed; [L718] 0 int y$mem_tmp; [L719] 0 _Bool y$r_buff0_thd0; [L720] 0 _Bool y$r_buff0_thd1; [L721] 0 _Bool y$r_buff0_thd2; [L722] 0 _Bool y$r_buff1_thd0; [L723] 0 _Bool y$r_buff1_thd1; [L724] 0 _Bool y$r_buff1_thd2; [L725] 0 _Bool y$read_delayed; [L726] 0 int *y$read_delayed_var; [L727] 0 int y$w_buff0; [L728] 0 _Bool y$w_buff0_used; [L729] 0 int y$w_buff1; [L730] 0 _Bool y$w_buff1_used; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L805] 0 pthread_t t1441[2]; [L806] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1441={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_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=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] [L806] COND TRUE 0 asdf<2 [L806] FCALL, FORK 0 pthread_create(&t1441[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1441[asdf], ((void *)0), P0, ((void *)0))=-2, t1441={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_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=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] [L736] 1 y$w_buff1 = y$w_buff0 [L737] 1 y$w_buff0 = 1 [L738] 1 y$w_buff1_used = y$w_buff0_used [L739] 1 y$w_buff0_used = (_Bool)1 [L740] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L740] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L741] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L742] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L743] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L744] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$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=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L806] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1441={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=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L806] COND TRUE 0 asdf<2 [L806] FCALL, FORK 0 pthread_create(&t1441[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1441[asdf], ((void *)0), P0, ((void *)0))=-1, t1441={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=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L736] 2 y$w_buff1 = y$w_buff0 [L737] 2 y$w_buff0 = 1 [L738] 2 y$w_buff1_used = y$w_buff0_used [L739] 2 y$w_buff0_used = (_Bool)1 [L740] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p1_EAX=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=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=1, y$w_buff1_used=1, y=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 5 procedures, 115 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 167 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 10 mSDtfsCounter, 167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 132 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: 8.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 135 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 8 mSDtfsCounter, 135 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 115 locations, 5 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: 2.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 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 06:17:38,658 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...