/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/added_bound_to_unbounded/goblint-regression_28-race_reach_82-list_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:05:00,960 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:05:01,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:05:01,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:05:01,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:05:01,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:05:01,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:05:01,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:05:01,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:05:01,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:05:01,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:05:01,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:05:01,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:05:01,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:05:01,053 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:05:01,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:05:01,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:05:01,053 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:05:01,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:05:01,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:05:01,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:05:01,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:05:01,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:05:01,055 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:05:01,055 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:05:01,056 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:05:01,056 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:05:01,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:05:01,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:05:01,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:05:01,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:05:01,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:05:01,058 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:05:01,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:05:01,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:05:01,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:05:01,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:05:01,258 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:05:01,259 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:05:01,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_82-list_racefree_bound2.i [2023-08-04 04:05:02,343 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:05:02,591 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:05:02,592 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_82-list_racefree_bound2.i [2023-08-04 04:05:02,610 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/790bfdfdb/1c81553739394dc39e42012405d53ecf/FLAG60a8c9cc5 [2023-08-04 04:05:02,618 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/790bfdfdb/1c81553739394dc39e42012405d53ecf [2023-08-04 04:05:02,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:05:02,621 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:05:02,622 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:05:02,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:05:02,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:05:02,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:05:02" (1/1) ... [2023-08-04 04:05:02,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5e94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:02, skipping insertion in model container [2023-08-04 04:05:02,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:05:02" (1/1) ... [2023-08-04 04:05:02,661 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:05:02,952 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_82-list_racefree_bound2.i[47038,47051] [2023-08-04 04:05:02,989 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:05:03,004 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:05:03,026 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:05:03,027 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-04 04:05:03,035 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_82-list_racefree_bound2.i[47038,47051] [2023-08-04 04:05:03,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:05:03,091 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:05:03,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03 WrapperNode [2023-08-04 04:05:03,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:05:03,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:05:03,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:05:03,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:05:03,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,152 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 208 [2023-08-04 04:05:03,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:05:03,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:05:03,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:05:03,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:05:03,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,174 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:05:03,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:05:03,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:05:03,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:05:03,199 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (1/1) ... [2023-08-04 04:05:03,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:05:03,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:05:03,692 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 04:05:03,694 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 04:05:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:05:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-04 04:05:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-04 04:05:03,748 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-04 04:05:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:05:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:05:03,748 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-04 04:05:03,749 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-04 04:05:03,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:05:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:05:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 04:05:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:05:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:05:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:05:03,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:05:03,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:05:03,751 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 04:05:03,902 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:05:03,903 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:05:04,176 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:05:04,182 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:05:04,182 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-04 04:05:04,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:05:04 BoogieIcfgContainer [2023-08-04 04:05:04,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:05:04,185 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:05:04,185 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:05:04,187 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:05:04,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:05:02" (1/3) ... [2023-08-04 04:05:04,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce2629b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:05:04, skipping insertion in model container [2023-08-04 04:05:04,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:05:03" (2/3) ... [2023-08-04 04:05:04,188 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce2629b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:05:04, skipping insertion in model container [2023-08-04 04:05:04,188 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:05:04" (3/3) ... [2023-08-04 04:05:04,189 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_82-list_racefree_bound2.i [2023-08-04 04:05:04,195 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:05:04,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:05:04,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:05:04,201 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:05:04,272 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 04:05:04,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 210 transitions, 442 flow [2023-08-04 04:05:04,426 INFO L124 PetriNetUnfolderBase]: 52/402 cut-off events. [2023-08-04 04:05:04,427 INFO L125 PetriNetUnfolderBase]: For 8/15 co-relation queries the response was YES. [2023-08-04 04:05:04,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 402 events. 52/402 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1594 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-08-04 04:05:04,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 210 transitions, 442 flow [2023-08-04 04:05:04,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 207 transitions, 428 flow [2023-08-04 04:05:04,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:04,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 207 transitions, 428 flow [2023-08-04 04:05:04,473 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 207 transitions, 428 flow [2023-08-04 04:05:04,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 207 transitions, 428 flow [2023-08-04 04:05:04,513 INFO L124 PetriNetUnfolderBase]: 48/389 cut-off events. [2023-08-04 04:05:04,514 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 04:05:04,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 389 events. 48/389 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1505 event pairs, 0 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2023-08-04 04:05:04,522 INFO L119 LiptonReduction]: Number of co-enabled transitions 12890 [2023-08-04 04:05:09,855 INFO L134 LiptonReduction]: Checked pairs total: 23053 [2023-08-04 04:05:09,855 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-04 04:05:09,880 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:05:09,889 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;@45c898e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:05:09,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:05:09,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:05:09,918 INFO L124 PetriNetUnfolderBase]: 7/61 cut-off events. [2023-08-04 04:05:09,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:05:09,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:09,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:05:09,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:05:09,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash -139620747, now seen corresponding path program 1 times [2023-08-04 04:05:09,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:09,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666682852] [2023-08-04 04:05:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:09,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:10,222 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 04:05:10,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:05:10,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666682852] [2023-08-04 04:05:10,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666682852] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:05:10,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:05:10,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:05:10,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348644353] [2023-08-04 04:05:10,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:05:10,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:05:10,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:05:10,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:05:10,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:05:10,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 377 [2023-08-04 04:05:10,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 60 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 04:05:10,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:05:10,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 377 [2023-08-04 04:05:10,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:05:10,654 INFO L124 PetriNetUnfolderBase]: 2281/3886 cut-off events. [2023-08-04 04:05:10,655 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-08-04 04:05:10,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7523 conditions, 3886 events. 2281/3886 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 21980 event pairs, 1943 based on Foata normal form. 284/3504 useless extension candidates. Maximal degree in co-relation 6827. Up to 3567 conditions per place. [2023-08-04 04:05:10,672 INFO L140 encePairwiseOnDemand]: 363/377 looper letters, 35 selfloop transitions, 2 changer transitions 15/56 dead transitions. [2023-08-04 04:05:10,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 56 transitions, 224 flow [2023-08-04 04:05:10,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:05:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:05:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-08-04 04:05:10,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393457117595049 [2023-08-04 04:05:10,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-08-04 04:05:10,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-08-04 04:05:10,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:05:10,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-08-04 04:05:10,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states 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 04:05:10,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 04:05:10,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 377.0) internal successors, (1508), 4 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states 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 04:05:10,694 INFO L175 Difference]: Start difference. First operand has 50 places, 60 transitions, 134 flow. Second operand 3 states and 610 transitions. [2023-08-04 04:05:10,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 56 transitions, 224 flow [2023-08-04 04:05:10,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:05:10,699 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 89 flow [2023-08-04 04:05:10,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-08-04 04:05:10,702 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-04 04:05:10,702 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 89 flow [2023-08-04 04:05:10,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 04:05:10,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:10,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:05:10,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:05:10,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:05:10,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash 66358163, now seen corresponding path program 1 times [2023-08-04 04:05:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:10,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517124183] [2023-08-04 04:05:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:10,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:10,803 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 04:05:10,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:05:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517124183] [2023-08-04 04:05:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517124183] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:05:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727257532] [2023-08-04 04:05:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:10,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:05:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:05:10,808 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 04:05:10,821 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 04:05:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:10,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:05:10,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:05:10,962 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 04:05:10,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:05:10,977 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 04:05:10,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727257532] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:05:10,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:05:10,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:05:10,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297725413] [2023-08-04 04:05:10,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:05:10,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:05:10,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:05:10,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:05:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:05:10,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 377 [2023-08-04 04:05:10,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 04:05:10,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:05:10,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 377 [2023-08-04 04:05:10,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:05:11,027 INFO L124 PetriNetUnfolderBase]: 12/37 cut-off events. [2023-08-04 04:05:11,028 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 04:05:11,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 37 events. 12/37 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 1 based on Foata normal form. 7/44 useless extension candidates. Maximal degree in co-relation 88. Up to 26 conditions per place. [2023-08-04 04:05:11,028 INFO L140 encePairwiseOnDemand]: 374/377 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-04 04:05:11,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 80 flow [2023-08-04 04:05:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:05:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:05:11,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 746 transitions. [2023-08-04 04:05:11,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946949602122016 [2023-08-04 04:05:11,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 746 transitions. [2023-08-04 04:05:11,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 746 transitions. [2023-08-04 04:05:11,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:05:11,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 746 transitions. [2023-08-04 04:05:11,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states 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 04:05:11,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 04:05:11,038 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 377.0) internal successors, (1885), 5 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 04:05:11,038 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 89 flow. Second operand 4 states and 746 transitions. [2023-08-04 04:05:11,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 80 flow [2023-08-04 04:05:11,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 19 transitions, 74 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:05:11,039 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 04:05:11,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=377, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 04:05:11,040 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -32 predicate places. [2023-08-04 04:05:11,041 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 04:05:11,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states 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 04:05:11,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:05:11,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:05:11,066 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 04:05:11,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:05:11,255 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:05:11,258 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:05:11,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 210 transitions, 442 flow [2023-08-04 04:05:11,296 INFO L124 PetriNetUnfolderBase]: 52/402 cut-off events. [2023-08-04 04:05:11,296 INFO L125 PetriNetUnfolderBase]: For 8/15 co-relation queries the response was YES. [2023-08-04 04:05:11,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 402 events. 52/402 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1594 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 206. Up to 8 conditions per place. [2023-08-04 04:05:11,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 210 transitions, 442 flow [2023-08-04 04:05:11,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 208 transitions, 432 flow [2023-08-04 04:05:11,299 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:11,299 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 208 transitions, 432 flow [2023-08-04 04:05:11,300 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 208 transitions, 432 flow [2023-08-04 04:05:11,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 208 transitions, 432 flow [2023-08-04 04:05:11,326 INFO L124 PetriNetUnfolderBase]: 48/390 cut-off events. [2023-08-04 04:05:11,326 INFO L125 PetriNetUnfolderBase]: For 4/7 co-relation queries the response was YES. [2023-08-04 04:05:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 390 events. 48/390 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1511 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 194. Up to 8 conditions per place. [2023-08-04 04:05:11,334 INFO L119 LiptonReduction]: Number of co-enabled transitions 12936 [2023-08-04 04:05:17,244 INFO L134 LiptonReduction]: Checked pairs total: 23654 [2023-08-04 04:05:17,244 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-04 04:05:17,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:05:17,249 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;@45c898e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:05:17,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:05:17,251 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:05:17,251 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-04 04:05:17,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:05:17,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:17,252 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:05:17,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:05:17,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash -713333245, now seen corresponding path program 1 times [2023-08-04 04:05:17,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:17,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469428678] [2023-08-04 04:05:17,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:17,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:05:17,294 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:05:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:05:17,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:05:17,358 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:05:17,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 04:05:17,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 04:05:17,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:05:17,359 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:05:17,361 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-04 04:05:17,362 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:05:17,362 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:05:17,418 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-04 04:05:17,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 327 transitions, 702 flow [2023-08-04 04:05:17,555 INFO L124 PetriNetUnfolderBase]: 191/1195 cut-off events. [2023-08-04 04:05:17,556 INFO L125 PetriNetUnfolderBase]: For 72/107 co-relation queries the response was YES. [2023-08-04 04:05:17,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 1195 events. 191/1195 cut-off events. For 72/107 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7398 event pairs, 2 based on Foata normal form. 0/1005 useless extension candidates. Maximal degree in co-relation 755. Up to 32 conditions per place. [2023-08-04 04:05:17,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 327 transitions, 702 flow [2023-08-04 04:05:17,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 326 transitions, 696 flow [2023-08-04 04:05:17,580 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:05:17,580 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 326 transitions, 696 flow [2023-08-04 04:05:17,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 326 transitions, 696 flow [2023-08-04 04:05:17,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 326 transitions, 696 flow [2023-08-04 04:05:17,707 INFO L124 PetriNetUnfolderBase]: 191/1194 cut-off events. [2023-08-04 04:05:17,708 INFO L125 PetriNetUnfolderBase]: For 71/99 co-relation queries the response was YES. [2023-08-04 04:05:17,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1289 conditions, 1194 events. 191/1194 cut-off events. For 71/99 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7443 event pairs, 2 based on Foata normal form. 0/1004 useless extension candidates. Maximal degree in co-relation 755. Up to 32 conditions per place. [2023-08-04 04:05:17,758 INFO L119 LiptonReduction]: Number of co-enabled transitions 53432 [2023-08-04 04:05:24,467 INFO L134 LiptonReduction]: Checked pairs total: 118012 [2023-08-04 04:05:24,467 INFO L136 LiptonReduction]: Total number of compositions: 246 [2023-08-04 04:05:24,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:05:24,472 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;@45c898e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:05:24,472 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:05:24,480 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:05:24,480 INFO L124 PetriNetUnfolderBase]: 11/93 cut-off events. [2023-08-04 04:05:24,480 INFO L125 PetriNetUnfolderBase]: For 8/12 co-relation queries the response was YES. [2023-08-04 04:05:24,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:05:24,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:05:24,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:05:24,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:05:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1838717057, now seen corresponding path program 1 times [2023-08-04 04:05:24,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:05:24,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359829725] [2023-08-04 04:05:24,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:05:24,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:05:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:05:24,544 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 04:05:24,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:05:24,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359829725] [2023-08-04 04:05:24,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359829725] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:05:24,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:05:24,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:05:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105697475] [2023-08-04 04:05:24,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:05:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:05:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:05:24,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:05:24,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:05:24,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 573 [2023-08-04 04:05:24,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 114 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 04:05:24,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:05:24,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 573 [2023-08-04 04:05:24,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:06:41,820 INFO L124 PetriNetUnfolderBase]: 824347/1098855 cut-off events. [2023-08-04 04:06:41,820 INFO L125 PetriNetUnfolderBase]: For 46792/46792 co-relation queries the response was YES. [2023-08-04 04:06:44,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2158756 conditions, 1098855 events. 824347/1098855 cut-off events. For 46792/46792 co-relation queries the response was YES. Maximal size of possible extension queue 22543. Compared 8486996 event pairs, 576024 based on Foata normal form. 74880/1019483 useless extension candidates. Maximal degree in co-relation 341991. Up to 1038244 conditions per place. [2023-08-04 04:06:47,514 INFO L140 encePairwiseOnDemand]: 548/573 looper letters, 82 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2023-08-04 04:06:47,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 101 transitions, 414 flow [2023-08-04 04:06:47,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:06:47,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:06:47,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2023-08-04 04:06:47,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526468877254218 [2023-08-04 04:06:47,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2023-08-04 04:06:47,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2023-08-04 04:06:47,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:06:47,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2023-08-04 04:06:47,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states 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 04:06:47,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 573.0) internal successors, (2292), 4 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states 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 04:06:47,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 573.0) internal successors, (2292), 4 states have internal predecessors, (2292), 0 states have call successors, (0), 0 states 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 04:06:47,667 INFO L175 Difference]: Start difference. First operand has 89 places, 114 transitions, 272 flow. Second operand 3 states and 950 transitions. [2023-08-04 04:06:47,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 101 transitions, 414 flow [2023-08-04 04:06:47,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 101 transitions, 411 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:06:47,830 INFO L231 Difference]: Finished difference. Result has 91 places, 93 transitions, 237 flow [2023-08-04 04:06:47,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=573, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=91, PETRI_TRANSITIONS=93} [2023-08-04 04:06:47,831 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 2 predicate places. [2023-08-04 04:06:47,831 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 93 transitions, 237 flow [2023-08-04 04:06:47,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 284.0) internal successors, (852), 3 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 04:06:47,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:06:47,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:06:47,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:06:47,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:06:47,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:06:47,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1165120945, now seen corresponding path program 1 times [2023-08-04 04:06:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:06:47,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092942044] [2023-08-04 04:06:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:47,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:06:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:47,926 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 04:06:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:06:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092942044] [2023-08-04 04:06:47,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092942044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:06:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119845900] [2023-08-04 04:06:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:06:47,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:06:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:06:47,966 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 04:06:47,968 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 04:06:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:06:48,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:06:48,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:06:48,096 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 04:06:48,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:06:48,111 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 04:06:48,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119845900] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:06:48,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:06:48,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:06:48,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616582943] [2023-08-04 04:06:48,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:06:48,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:06:48,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:06:48,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:06:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:06:48,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 573 [2023-08-04 04:06:48,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 93 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 283.4) internal successors, (1417), 5 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states 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 04:06:48,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:06:48,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 573 [2023-08-04 04:06:48,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:01,274 INFO L124 PetriNetUnfolderBase]: 800313/1062861 cut-off events. [2023-08-04 04:08:01,274 INFO L125 PetriNetUnfolderBase]: For 33672/33672 co-relation queries the response was YES. [2023-08-04 04:08:03,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2091003 conditions, 1062861 events. 800313/1062861 cut-off events. For 33672/33672 co-relation queries the response was YES. Maximal size of possible extension queue 21621. Compared 8099360 event pairs, 419392 based on Foata normal form. 8/914143 useless extension candidates. Maximal degree in co-relation 382308. Up to 1006562 conditions per place. [2023-08-04 04:08:06,102 INFO L140 encePairwiseOnDemand]: 569/573 looper letters, 94 selfloop transitions, 3 changer transitions 1/115 dead transitions. [2023-08-04 04:08:06,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 477 flow [2023-08-04 04:08:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:08:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:08:06,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1219 transitions. [2023-08-04 04:08:06,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318499127399651 [2023-08-04 04:08:06,105 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1219 transitions. [2023-08-04 04:08:06,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1219 transitions. [2023-08-04 04:08:06,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:06,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1219 transitions. [2023-08-04 04:08:06,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 304.75) internal successors, (1219), 4 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states 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 04:08:06,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 573.0) internal successors, (2865), 5 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states 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 04:08:06,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 573.0) internal successors, (2865), 5 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states 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 04:08:06,111 INFO L175 Difference]: Start difference. First operand has 91 places, 93 transitions, 237 flow. Second operand 4 states and 1219 transitions. [2023-08-04 04:08:06,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 477 flow [2023-08-04 04:08:06,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 115 transitions, 475 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:08:06,115 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 249 flow [2023-08-04 04:08:06,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=573, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=249, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2023-08-04 04:08:06,116 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 6 predicate places. [2023-08-04 04:08:06,116 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 249 flow [2023-08-04 04:08:06,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 283.4) internal successors, (1417), 5 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states 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 04:08:06,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:06,117 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:08:06,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 04:08:06,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:06,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:08:06,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:06,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1650232673, now seen corresponding path program 1 times [2023-08-04 04:08:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:06,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232500964] [2023-08-04 04:08:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:06,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:08:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:08:06,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232500964] [2023-08-04 04:08:06,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232500964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:08:06,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113494026] [2023-08-04 04:08:06,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:06,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:06,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:06,731 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 04:08:06,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:08:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:08:06,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-04 04:08:06,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:08:06,920 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-04 04:08:06,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 04:08:06,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 04:08:06,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 04:08:06,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 04:08:07,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 04:08:07,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 04:08:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:08:07,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:08:07,148 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#t2_ids~0#1.base_109| Int)) (or (<= |v_ULTIMATE.start_main_~#t2_ids~0#1.base_109| |c_#StackHeapBarrier|) (forall ((v_ArrVal_334 (Array Int Int))) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~#t2_ids~0#1.base_109| v_ArrVal_334) c_~A~0.base) c_~A~0.offset) 0)))) is different from false [2023-08-04 04:08:09,184 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~#t2_ids~0#1.base_109| Int) (v_ArrVal_333 (Array Int Int)) (v_ArrVal_334 (Array Int Int))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1_ids~0#1.base| v_ArrVal_333) |v_ULTIMATE.start_main_~#t2_ids~0#1.base_109| v_ArrVal_334) c_~A~0.base) c_~A~0.offset) 0) (<= |v_ULTIMATE.start_main_~#t2_ids~0#1.base_109| |c_#StackHeapBarrier|))) is different from false [2023-08-04 04:08:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-04 04:08:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113494026] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:08:09,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:08:09,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-04 04:08:09,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247416083] [2023-08-04 04:08:09,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:08:09,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-04 04:08:09,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-04 04:08:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=8, NotChecked=62, Total=342 [2023-08-04 04:08:09,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 573 [2023-08-04 04:08:09,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 249 flow. Second operand has 19 states, 19 states have (on average 219.1578947368421) internal successors, (4164), 19 states have internal predecessors, (4164), 0 states have call successors, (0), 0 states 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 04:08:09,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:09,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 573 [2023-08-04 04:08:09,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand