/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_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:47:49,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:47:49,971 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:47:49,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:47:49,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:47:49,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:47:49,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:47:49,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:47:49,994 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:47:49,994 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:47:49,995 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:47:49,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:47:49,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:47:49,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:47:49,996 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:47:49,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:47:49,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:47:49,997 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:47:49,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:47:49,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:47:49,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:47:49,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:47:49,999 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:47:49,999 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:47:50,000 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:47:50,000 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:47:50,000 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:47:50,001 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:47:50,001 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:47:50,001 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:47:50,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:47:50,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:47:50,002 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:47:50,002 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:47:50,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:47:50,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:47:50,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:47:50,003 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:47:50,004 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:47:50,004 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:47:50,004 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:47:50,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:47:50,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:47:50,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:47:50,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:47:50,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:47:50,212 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:47:50,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:47:51,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:47:51,655 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:47:51,656 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:47:51,688 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/721ec0ceb/e8173231381243d68be7aac4cc23916d/FLAG5e31a3077 [2023-08-04 05:47:51,700 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/721ec0ceb/e8173231381243d68be7aac4cc23916d [2023-08-04 05:47:51,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:47:51,703 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:47:51,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:47:51,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:47:51,714 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:47:51,714 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:47:51" (1/1) ... [2023-08-04 05:47:51,715 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df62015 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:51, skipping insertion in model container [2023-08-04 05:47:51,715 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:47:51" (1/1) ... [2023-08-04 05:47:51,755 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:47:51,888 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_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:47:52,083 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:47:52,091 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:47:52,105 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_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:47:52,125 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:47:52,127 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:47:52,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:47:52,185 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:47:52,185 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:47:52,193 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:47:52,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52 WrapperNode [2023-08-04 05:47:52,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:47:52,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:47:52,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:47:52,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:47:52,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,256 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 176 [2023-08-04 05:47:52,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:47:52,257 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:47:52,257 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:47:52,257 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:47:52,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,301 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,302 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,305 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:47:52,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:47:52,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:47:52,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:47:52,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (1/1) ... [2023-08-04 05:47:52,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:47:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:47:52,342 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 05:47:52,352 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 05:47:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:47:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:47:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:47:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:47:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:47:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:47:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:47:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:47:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:47:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:47:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:47:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:47:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:47:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:47:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:47:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:47:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:47:52,388 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 05:47:52,509 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:47:52,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:47:52,874 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:47:52,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:47:52,984 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:47:52,987 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:47:52 BoogieIcfgContainer [2023-08-04 05:47:52,987 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:47:52,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:47:52,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:47:52,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:47:52,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:47:51" (1/3) ... [2023-08-04 05:47:52,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ed1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:47:52, skipping insertion in model container [2023-08-04 05:47:52,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:47:52" (2/3) ... [2023-08-04 05:47:52,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ed1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:47:52, skipping insertion in model container [2023-08-04 05:47:52,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:47:52" (3/3) ... [2023-08-04 05:47:52,994 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix021_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:47:53,000 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:47:53,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:47:53,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:47:53,008 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:47:53,068 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:47:53,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:47:53,331 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:47:53,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:53,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5770 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 05:47:53,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:47:53,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 158 transitions, 336 flow [2023-08-04 05:47:53,352 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:47:53,366 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 158 transitions, 336 flow [2023-08-04 05:47:53,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 158 transitions, 336 flow [2023-08-04 05:47:53,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:47:53,477 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:47:53,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:53,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5770 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 05:47:53,495 INFO L119 LiptonReduction]: Number of co-enabled transitions 4484 [2023-08-04 05:47:57,222 INFO L134 LiptonReduction]: Checked pairs total: 11404 [2023-08-04 05:47:57,223 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-04 05:47:57,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:47:57,239 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;@67a1387e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:47:57,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:47:57,242 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:47:57,242 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 05:47:57,242 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:47:57,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:57,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:47:57,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:47:57,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:57,247 INFO L85 PathProgramCache]: Analyzing trace with hash 20548959, now seen corresponding path program 1 times [2023-08-04 05:47:57,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:57,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791464829] [2023-08-04 05:47:57,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:57,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:57,597 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 05:47:57,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:47:57,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791464829] [2023-08-04 05:47:57,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791464829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:47:57,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:47:57,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:47:57,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837074839] [2023-08-04 05:47:57,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:47:57,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:47:57,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:47:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:47:57,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:47:57,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 290 [2023-08-04 05:47:57,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 05:47:57,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:47:57,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 290 [2023-08-04 05:47:57,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:47:59,992 INFO L124 PetriNetUnfolderBase]: 12873/19871 cut-off events. [2023-08-04 05:47:59,992 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-08-04 05:48:00,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38664 conditions, 19871 events. 12873/19871 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 139717 event pairs, 3816 based on Foata normal form. 0/18138 useless extension candidates. Maximal degree in co-relation 32368. Up to 12394 conditions per place. [2023-08-04 05:48:00,107 INFO L140 encePairwiseOnDemand]: 286/290 looper letters, 56 selfloop transitions, 2 changer transitions 7/69 dead transitions. [2023-08-04 05:48:00,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 289 flow [2023-08-04 05:48:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:48:00,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:48:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-04 05:48:00,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5494252873563218 [2023-08-04 05:48:00,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-04 05:48:00,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-04 05:48:00,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:00,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-04 05:48:00,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 05:48:00,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:00,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:00,133 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 106 flow. Second operand 3 states and 478 transitions. [2023-08-04 05:48:00,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 289 flow [2023-08-04 05:48:00,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 289 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:48:00,138 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 88 flow [2023-08-04 05:48:00,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-08-04 05:48:00,142 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-04 05:48:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 88 flow [2023-08-04 05:48:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 05:48:00,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:00,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:48:00,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:48:00,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:48:00,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1624290360, now seen corresponding path program 1 times [2023-08-04 05:48:00,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:00,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176862010] [2023-08-04 05:48:00,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:00,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:00,197 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 05:48:00,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:00,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176862010] [2023-08-04 05:48:00,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176862010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:48:00,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:48:00,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:48:00,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929983983] [2023-08-04 05:48:00,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:48:00,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:48:00,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:48:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:48:00,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 290 [2023-08-04 05:48:00,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:48:00,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:00,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 290 [2023-08-04 05:48:00,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:48:01,642 INFO L124 PetriNetUnfolderBase]: 9395/13750 cut-off events. [2023-08-04 05:48:01,643 INFO L125 PetriNetUnfolderBase]: For 1041/1041 co-relation queries the response was YES. [2023-08-04 05:48:01,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28215 conditions, 13750 events. 9395/13750 cut-off events. For 1041/1041 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 82144 event pairs, 6512 based on Foata normal form. 0/12886 useless extension candidates. Maximal degree in co-relation 28199. Up to 13240 conditions per place. [2023-08-04 05:48:01,708 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 33 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 05:48:01,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 170 flow [2023-08-04 05:48:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:48:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:48:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-04 05:48:01,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080459770114942 [2023-08-04 05:48:01,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-04 05:48:01,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-04 05:48:01,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:01,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-04 05:48:01,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 05:48:01,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:01,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:01,726 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 88 flow. Second operand 3 states and 442 transitions. [2023-08-04 05:48:01,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 170 flow [2023-08-04 05:48:01,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:48:01,729 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 92 flow [2023-08-04 05:48:01,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2023-08-04 05:48:01,730 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-04 05:48:01,731 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 92 flow [2023-08-04 05:48:01,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:48:01,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:01,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:48:01,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 05:48:01,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:48:01,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1902158380, now seen corresponding path program 1 times [2023-08-04 05:48:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643971458] [2023-08-04 05:48:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:01,841 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 05:48:01,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:01,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643971458] [2023-08-04 05:48:01,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643971458] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:48:01,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026984132] [2023-08-04 05:48:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:01,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:48:01,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:48:01,847 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 05:48:01,870 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 05:48:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:01,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:48:01,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:48:01,981 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 05:48:01,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:48:01,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026984132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:48:01,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:48:01,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:48:01,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045569277] [2023-08-04 05:48:01,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:48:01,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:48:01,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:01,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:48:01,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:48:01,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 290 [2023-08-04 05:48:01,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 05:48:01,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:01,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 290 [2023-08-04 05:48:01,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:48:03,167 INFO L124 PetriNetUnfolderBase]: 7984/11563 cut-off events. [2023-08-04 05:48:03,167 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-04 05:48:03,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22864 conditions, 11563 events. 7984/11563 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 66867 event pairs, 5674 based on Foata normal form. 0/10954 useless extension candidates. Maximal degree in co-relation 22847. Up to 11037 conditions per place. [2023-08-04 05:48:03,219 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 36 selfloop transitions, 2 changer transitions 1/43 dead transitions. [2023-08-04 05:48:03,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 184 flow [2023-08-04 05:48:03,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:48:03,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:48:03,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-08-04 05:48:03,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2023-08-04 05:48:03,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-08-04 05:48:03,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-08-04 05:48:03,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:03,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-08-04 05:48:03,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 05:48:03,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:03,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:03,225 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 92 flow. Second operand 3 states and 445 transitions. [2023-08-04 05:48:03,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 184 flow [2023-08-04 05:48:03,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:48:03,227 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 96 flow [2023-08-04 05:48:03,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-04 05:48:03,228 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-04 05:48:03,228 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 96 flow [2023-08-04 05:48:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states 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 05:48:03,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:03,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:48:03,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 05:48:03,433 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 05:48:03,434 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:48:03,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash 976315822, now seen corresponding path program 1 times [2023-08-04 05:48:03,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:03,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257322613] [2023-08-04 05:48:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:03,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:03,499 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 05:48:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257322613] [2023-08-04 05:48:03,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257322613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:48:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691301935] [2023-08-04 05:48:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:03,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:48:03,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:48:03,502 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 05:48:03,511 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 05:48:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:03,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:48:03,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:48:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:48:03,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:48:03,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691301935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:48:03,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:48:03,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:48:03,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950205106] [2023-08-04 05:48:03,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:48:03,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:48:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:48:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:48:03,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 290 [2023-08-04 05:48:03,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 05:48:03,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:03,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 290 [2023-08-04 05:48:03,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:48:04,435 INFO L124 PetriNetUnfolderBase]: 6824/9771 cut-off events. [2023-08-04 05:48:04,435 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-08-04 05:48:04,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19368 conditions, 9771 events. 6824/9771 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 53659 event pairs, 6056 based on Foata normal form. 0/9322 useless extension candidates. Maximal degree in co-relation 19351. Up to 9119 conditions per place. [2023-08-04 05:48:04,475 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 39 selfloop transitions, 2 changer transitions 1/46 dead transitions. [2023-08-04 05:48:04,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 200 flow [2023-08-04 05:48:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:48:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:48:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-04 05:48:04,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2023-08-04 05:48:04,477 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-04 05:48:04,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-04 05:48:04,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:04,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-04 05:48:04,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 05:48:04,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:04,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:04,481 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 96 flow. Second operand 3 states and 448 transitions. [2023-08-04 05:48:04,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 200 flow [2023-08-04 05:48:04,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:48:04,482 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 100 flow [2023-08-04 05:48:04,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-08-04 05:48:04,483 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-04 05:48:04,483 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 100 flow [2023-08-04 05:48:04,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 05:48:04,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:04,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:48:04,495 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 05:48:04,689 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 05:48:04,689 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:48:04,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:04,689 INFO L85 PathProgramCache]: Analyzing trace with hash 415358624, now seen corresponding path program 1 times [2023-08-04 05:48:04,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:04,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455237983] [2023-08-04 05:48:04,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:04,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:48:04,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455237983] [2023-08-04 05:48:04,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455237983] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:48:04,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497223152] [2023-08-04 05:48:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:04,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:48:04,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:48:04,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:48:04,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 05:48:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:04,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:48:04,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:48:04,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:48:04,861 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:48:04,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497223152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:48:04,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:48:04,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:48:04,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810671208] [2023-08-04 05:48:04,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:48:04,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:48:04,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:04,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:48:04,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:48:04,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 290 [2023-08-04 05:48:04,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 05:48:04,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:04,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 290 [2023-08-04 05:48:04,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:48:05,561 INFO L124 PetriNetUnfolderBase]: 6392/8827 cut-off events. [2023-08-04 05:48:05,561 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-08-04 05:48:05,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17989 conditions, 8827 events. 6392/8827 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 44407 event pairs, 4872 based on Foata normal form. 0/8486 useless extension candidates. Maximal degree in co-relation 17971. Up to 7279 conditions per place. [2023-08-04 05:48:05,591 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 43 selfloop transitions, 2 changer transitions 1/50 dead transitions. [2023-08-04 05:48:05,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 220 flow [2023-08-04 05:48:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:48:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:48:05,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-08-04 05:48:05,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195402298850574 [2023-08-04 05:48:05,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-08-04 05:48:05,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-08-04 05:48:05,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:05,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-08-04 05:48:05,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 05:48:05,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:05,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 05:48:05,597 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 100 flow. Second operand 3 states and 452 transitions. [2023-08-04 05:48:05,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 220 flow [2023-08-04 05:48:05,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:48:05,601 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 104 flow [2023-08-04 05:48:05,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-08-04 05:48:05,603 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-04 05:48:05,603 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 104 flow [2023-08-04 05:48:05,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 05:48:05,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:05,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:48:05,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 05:48:05,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:48:05,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:48:05,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash -389396844, now seen corresponding path program 1 times [2023-08-04 05:48:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445121437] [2023-08-04 05:48:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:48:05,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:05,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445121437] [2023-08-04 05:48:05,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445121437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:48:05,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508079207] [2023-08-04 05:48:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:05,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:48:05,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:48:05,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:48:05,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 05:48:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:06,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:48:06,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:48:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:48:06,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:48:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:48:06,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508079207] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:48:06,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:48:06,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:48:06,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916029657] [2023-08-04 05:48:06,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:48:06,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:48:06,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:48:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:48:06,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 290 [2023-08-04 05:48:06,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 05:48:06,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:06,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 290 [2023-08-04 05:48:06,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:48:06,096 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:48:06,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:48:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 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 05:48:06,097 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:48:06,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 05:48:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:48:06,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:48:06,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-08-04 05:48:06,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724137931034483 [2023-08-04 05:48:06,099 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-08-04 05:48:06,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-08-04 05:48:06,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:06,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-08-04 05:48:06,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 05:48:06,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 05:48:06,104 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states 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 05:48:06,104 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 104 flow. Second operand 4 states and 548 transitions. [2023-08-04 05:48:06,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 05:48:06,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:48:06,105 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 05:48:06,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=18, 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=21, PETRI_TRANSITIONS=0} [2023-08-04 05:48:06,107 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -30 predicate places. [2023-08-04 05:48:06,107 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 05:48:06,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states 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 05:48:06,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:48:06,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:48:06,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:48:06,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 05:48:06,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:48:06,317 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 05:48:06,319 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:48:06,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:48:06,400 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:48:06,400 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:48:06,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5770 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 553. Up to 32 conditions per place. [2023-08-04 05:48:06,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:48:06,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-04 05:48:06,404 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:48:06,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:48:06,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:48:06,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-04 05:48:06,437 INFO L124 PetriNetUnfolderBase]: 14/436 cut-off events. [2023-08-04 05:48:06,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:48:06,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 436 events. 14/436 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2006 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 305. Up to 16 conditions per place. [2023-08-04 05:48:06,442 INFO L119 LiptonReduction]: Number of co-enabled transitions 2624 [2023-08-04 05:48:09,354 INFO L134 LiptonReduction]: Checked pairs total: 6631 [2023-08-04 05:48:09,355 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 05:48:09,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:48:09,357 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;@67a1387e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:48:09,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:48:09,360 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:48:09,360 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-04 05:48:09,360 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:48:09,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:09,361 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:48:09,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:48:09,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:09,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1218016308, now seen corresponding path program 1 times [2023-08-04 05:48:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486752655] [2023-08-04 05:48:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:09,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:48:09,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:48:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:48:09,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:48:09,410 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:48:09,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:48:09,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:48:09,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:48:09,411 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:48:09,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 05:48:09,411 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:48:09,412 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:48:09,412 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:48:09,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:48:09,447 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:48:09,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 432 flow [2023-08-04 05:48:09,887 INFO L124 PetriNetUnfolderBase]: 282/4324 cut-off events. [2023-08-04 05:48:09,887 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:48:09,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 4324 events. 282/4324 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42061 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3119. Up to 162 conditions per place. [2023-08-04 05:48:09,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 192 transitions, 432 flow [2023-08-04 05:48:09,916 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 432 flow [2023-08-04 05:48:09,916 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:48:09,916 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 192 transitions, 432 flow [2023-08-04 05:48:09,917 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 192 transitions, 432 flow [2023-08-04 05:48:09,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 432 flow [2023-08-04 05:48:10,371 INFO L124 PetriNetUnfolderBase]: 282/4324 cut-off events. [2023-08-04 05:48:10,371 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:48:10,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4613 conditions, 4324 events. 282/4324 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42061 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3119. Up to 162 conditions per place. [2023-08-04 05:48:10,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 11008 [2023-08-04 05:48:14,127 INFO L134 LiptonReduction]: Checked pairs total: 36970 [2023-08-04 05:48:14,127 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 05:48:14,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:48:14,129 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;@67a1387e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:48:14,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:48:14,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:48:14,131 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 05:48:14,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:48:14,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:14,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:48:14,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:48:14,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:14,132 INFO L85 PathProgramCache]: Analyzing trace with hash 34897791, now seen corresponding path program 1 times [2023-08-04 05:48:14,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:14,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794428228] [2023-08-04 05:48:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:14,220 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 05:48:14,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:14,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794428228] [2023-08-04 05:48:14,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794428228] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:48:14,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:48:14,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:48:14,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813488115] [2023-08-04 05:48:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:48:14,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:48:14,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:14,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:48:14,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:48:14,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 333 [2023-08-04 05:48:14,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 05:48:14,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:14,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 333 [2023-08-04 05:48:14,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand