/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_90-arrayloop2_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:08:12,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:08:13,067 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:08:13,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:08:13,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:08:13,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:08:13,074 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:08:13,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:08:13,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:08:13,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:08:13,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:08:13,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:08:13,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:08:13,108 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:08:13,108 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:08:13,108 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:08:13,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:08:13,109 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:08:13,109 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:08:13,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:08:13,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:08:13,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:08:13,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:08:13,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:08:13,111 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:08:13,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:08:13,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:08:13,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:08:13,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:08:13,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:08:13,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:08:13,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:08:13,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:08:13,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:08:13,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:08:13,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:08:13,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:08:13,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:08:13,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:08:13,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:08:13,115 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:08:13,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:08:13,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:08:13,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:08:13,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:08:13,388 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:08:13,389 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:08:13,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-04 04:08:14,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:08:14,775 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:08:14,776 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-04 04:08:14,790 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a649e03d/6bfed9420ab64987bbfdd6dbc3fb10bc/FLAG03a56ee38 [2023-08-04 04:08:14,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a649e03d/6bfed9420ab64987bbfdd6dbc3fb10bc [2023-08-04 04:08:14,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:08:14,807 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:08:14,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:08:14,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:08:14,812 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:08:14,813 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:08:14" (1/1) ... [2023-08-04 04:08:14,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d58cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:14, skipping insertion in model container [2023-08-04 04:08:14,814 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:08:14" (1/1) ... [2023-08-04 04:08:14,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:08:15,247 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_90-arrayloop2_racing_bound2.i[47038,47051] [2023-08-04 04:08:15,259 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,259 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,260 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,261 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:08:15,316 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:08:15,334 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:08:15,335 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:08:15,351 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_90-arrayloop2_racing_bound2.i[47038,47051] [2023-08-04 04:08:15,353 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,354 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,354 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,354 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-04 04:08:15,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:08:15,430 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:08:15,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15 WrapperNode [2023-08-04 04:08:15,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:08:15,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:08:15,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:08:15,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:08:15,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,451 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,483 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 304 [2023-08-04 04:08:15,483 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:08:15,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:08:15,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:08:15,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:08:15,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,498 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,499 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,510 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:08:15,538 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:08:15,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:08:15,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:08:15,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (1/1) ... [2023-08-04 04:08:15,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:08:15,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:15,574 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 04:08:15,600 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 04:08:15,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:08:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-04 04:08:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-04 04:08:15,617 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-04 04:08:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:08:15,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:08:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-04 04:08:15,618 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-04 04:08:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:08:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:08:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 04:08:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:08:15,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:08:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:08:15,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:08:15,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:08:15,621 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 04:08:15,801 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:08:15,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:08:16,192 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:08:16,200 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:08:16,200 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-08-04 04:08:16,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:08:16 BoogieIcfgContainer [2023-08-04 04:08:16,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:08:16,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:08:16,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:08:16,207 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:08:16,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:08:14" (1/3) ... [2023-08-04 04:08:16,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2acded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:08:16, skipping insertion in model container [2023-08-04 04:08:16,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:08:15" (2/3) ... [2023-08-04 04:08:16,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2acded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:08:16, skipping insertion in model container [2023-08-04 04:08:16,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:08:16" (3/3) ... [2023-08-04 04:08:16,209 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_90-arrayloop2_racing_bound2.i [2023-08-04 04:08:16,216 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:08:16,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:08:16,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:08:16,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:08:16,346 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 04:08:16,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-08-04 04:08:16,544 INFO L124 PetriNetUnfolderBase]: 77/493 cut-off events. [2023-08-04 04:08:16,544 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-04 04:08:16,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-04 04:08:16,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 302 transitions, 626 flow [2023-08-04 04:08:16,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 302 transitions, 626 flow [2023-08-04 04:08:16,570 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:08:16,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 302 transitions, 626 flow [2023-08-04 04:08:16,579 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 302 transitions, 626 flow [2023-08-04 04:08:16,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-08-04 04:08:16,648 INFO L124 PetriNetUnfolderBase]: 77/493 cut-off events. [2023-08-04 04:08:16,648 INFO L125 PetriNetUnfolderBase]: For 8/14 co-relation queries the response was YES. [2023-08-04 04:08:16,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-04 04:08:16,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 31320 [2023-08-04 04:08:31,238 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-04 04:08:37,836 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-04 04:08:44,345 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-04 04:08:50,118 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-04 04:08:50,122 INFO L134 LiptonReduction]: Checked pairs total: 50902 [2023-08-04 04:08:50,122 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-08-04 04:08:50,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:08:50,137 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;@61d172ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:08:50,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:08:50,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:08:50,146 INFO L124 PetriNetUnfolderBase]: 15/76 cut-off events. [2023-08-04 04:08:50,146 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:08:50,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:50,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:08:50,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:08:50,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:50,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1212576408, now seen corresponding path program 1 times [2023-08-04 04:08:50,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:50,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174261054] [2023-08-04 04:08:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:50,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:08:50,408 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 04:08:50,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174261054] [2023-08-04 04:08:50,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174261054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:08:50,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:08:50,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:08:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902873742] [2023-08-04 04:08:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:08:50,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:08:50,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:50,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:08:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:08:50,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 558 [2023-08-04 04:08:50,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 04:08:50,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:50,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 558 [2023-08-04 04:08:50,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:51,490 INFO L124 PetriNetUnfolderBase]: 5341/8583 cut-off events. [2023-08-04 04:08:51,490 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-04 04:08:51,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 8583 events. 5341/8583 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51439 event pairs, 4400 based on Foata normal form. 1159/7780 useless extension candidates. Maximal degree in co-relation 15575. Up to 7762 conditions per place. [2023-08-04 04:08:51,553 INFO L140 encePairwiseOnDemand]: 535/558 looper letters, 60 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-04 04:08:51,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 298 flow [2023-08-04 04:08:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:08:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:08:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-04 04:08:51,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508363201911589 [2023-08-04 04:08:51,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-04 04:08:51,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-04 04:08:51,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:51,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-04 04:08:51,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 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 04:08:51,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 04:08:51,593 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 04:08:51,594 INFO L175 Difference]: Start difference. First operand has 66 places, 93 transitions, 208 flow. Second operand 3 states and 851 transitions. [2023-08-04 04:08:51,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 298 flow [2023-08-04 04:08:51,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:08:51,604 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 180 flow [2023-08-04 04:08:51,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=69, PETRI_TRANSITIONS=74} [2023-08-04 04:08:51,609 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-04 04:08:51,609 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 180 flow [2023-08-04 04:08:51,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 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 04:08:51,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:51,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:08:51,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:08:51,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:08:51,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:51,612 INFO L85 PathProgramCache]: Analyzing trace with hash 92120860, now seen corresponding path program 1 times [2023-08-04 04:08:51,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:51,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548120310] [2023-08-04 04:08:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:08:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:08:51,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:51,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548120310] [2023-08-04 04:08:51,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548120310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:08:51,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:08:51,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:08:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442565543] [2023-08-04 04:08:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:08:51,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:08:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:51,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:08:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:08:51,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 558 [2023-08-04 04:08:51,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 74 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 04:08:51,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:51,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 558 [2023-08-04 04:08:51,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:52,684 INFO L124 PetriNetUnfolderBase]: 5341/8585 cut-off events. [2023-08-04 04:08:52,684 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2023-08-04 04:08:52,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16483 conditions, 8585 events. 5341/8585 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51437 event pairs, 4400 based on Foata normal form. 2/6628 useless extension candidates. Maximal degree in co-relation 16464. Up to 7765 conditions per place. [2023-08-04 04:08:52,729 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-04 04:08:52,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 75 transitions, 304 flow [2023-08-04 04:08:52,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:08:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:08:52,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 829 transitions. [2023-08-04 04:08:52,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49522102747909197 [2023-08-04 04:08:52,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 829 transitions. [2023-08-04 04:08:52,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 829 transitions. [2023-08-04 04:08:52,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:52,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 829 transitions. [2023-08-04 04:08:52,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 276.3333333333333) internal successors, (829), 3 states have internal predecessors, (829), 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 04:08:52,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 04:08:52,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 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 04:08:52,739 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 180 flow. Second operand 3 states and 829 transitions. [2023-08-04 04:08:52,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 75 transitions, 304 flow [2023-08-04 04:08:52,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 75 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:08:52,742 INFO L231 Difference]: Finished difference. Result has 71 places, 75 transitions, 192 flow [2023-08-04 04:08:52,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=75} [2023-08-04 04:08:52,743 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2023-08-04 04:08:52,743 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 75 transitions, 192 flow [2023-08-04 04:08:52,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.6666666666667) internal successors, (779), 3 states have internal predecessors, (779), 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 04:08:52,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:52,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:08:52,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:08:52,744 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:08:52,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1317204216, now seen corresponding path program 1 times [2023-08-04 04:08:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:52,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100772690] [2023-08-04 04:08:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:52,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:52,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:08:52,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376948458] [2023-08-04 04:08:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:52,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:52,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:52,781 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 04:08:52,810 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 04:08:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:08:52,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:08:52,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:08:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:08:53,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:08:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:08:53,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:53,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100772690] [2023-08-04 04:08:53,042 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:08:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376948458] [2023-08-04 04:08:53,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376948458] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:08:53,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:08:53,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-04 04:08:53,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926314667] [2023-08-04 04:08:53,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:08:53,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:08:53,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:53,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:08:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:08:53,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-04 04:08:53,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 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 04:08:53,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:53,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-04 04:08:53,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:53,929 INFO L124 PetriNetUnfolderBase]: 5341/8591 cut-off events. [2023-08-04 04:08:53,930 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-08-04 04:08:53,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16511 conditions, 8591 events. 5341/8591 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51480 event pairs, 4400 based on Foata normal form. 6/6638 useless extension candidates. Maximal degree in co-relation 16471. Up to 7765 conditions per place. [2023-08-04 04:08:53,972 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-08-04 04:08:53,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 332 flow [2023-08-04 04:08:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:08:53,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:08:53,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1596 transitions. [2023-08-04 04:08:53,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767025089605735 [2023-08-04 04:08:53,978 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1596 transitions. [2023-08-04 04:08:53,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1596 transitions. [2023-08-04 04:08:53,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:53,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1596 transitions. [2023-08-04 04:08:53,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 04:08:53,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 04:08:53,990 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 04:08:53,990 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 192 flow. Second operand 6 states and 1596 transitions. [2023-08-04 04:08:53,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 332 flow [2023-08-04 04:08:53,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 78 transitions, 328 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 04:08:53,995 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 230 flow [2023-08-04 04:08:53,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-08-04 04:08:53,997 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2023-08-04 04:08:53,997 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 230 flow [2023-08-04 04:08:53,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.5) internal successors, (1545), 6 states have internal predecessors, (1545), 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 04:08:53,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:53,998 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:08:54,008 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 04:08:54,205 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 04:08:54,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:08:54,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1106361828, now seen corresponding path program 2 times [2023-08-04 04:08:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:54,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129370936] [2023-08-04 04:08:54,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:54,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:08:54,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1661802451] [2023-08-04 04:08:54,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 04:08:54,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:54,350 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 04:08:54,353 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 04:08:54,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 04:08:54,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:08:54,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-04 04:08:54,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:08:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:08:54,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:08:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:08:54,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:54,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129370936] [2023-08-04 04:08:54,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:08:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661802451] [2023-08-04 04:08:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661802451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:08:54,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:08:54,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-04 04:08:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267452204] [2023-08-04 04:08:54,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:08:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-04 04:08:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-04 04:08:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-04 04:08:54,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-04 04:08:54,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 230 flow. Second operand has 12 states, 12 states have (on average 256.75) internal successors, (3081), 12 states have internal predecessors, (3081), 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 04:08:54,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:54,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-04 04:08:54,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:56,204 INFO L124 PetriNetUnfolderBase]: 5341/8603 cut-off events. [2023-08-04 04:08:56,205 INFO L125 PetriNetUnfolderBase]: For 257/257 co-relation queries the response was YES. [2023-08-04 04:08:56,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16582 conditions, 8603 events. 5341/8603 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51562 event pairs, 4400 based on Foata normal form. 12/6656 useless extension candidates. Maximal degree in co-relation 16467. Up to 7765 conditions per place. [2023-08-04 04:08:56,240 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 59 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-04 04:08:56,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 406 flow [2023-08-04 04:08:56,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 04:08:56,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 04:08:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3135 transitions. [2023-08-04 04:08:56,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681899641577061 [2023-08-04 04:08:56,248 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3135 transitions. [2023-08-04 04:08:56,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3135 transitions. [2023-08-04 04:08:56,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:56,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3135 transitions. [2023-08-04 04:08:56,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 261.25) internal successors, (3135), 12 states have internal predecessors, (3135), 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 04:08:56,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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 04:08:56,266 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 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 04:08:56,266 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 230 flow. Second operand 12 states and 3135 transitions. [2023-08-04 04:08:56,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 406 flow [2023-08-04 04:08:56,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 84 transitions, 392 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-04 04:08:56,273 INFO L231 Difference]: Finished difference. Result has 94 places, 84 transitions, 312 flow [2023-08-04 04:08:56,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=312, PETRI_PLACES=94, PETRI_TRANSITIONS=84} [2023-08-04 04:08:56,274 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 28 predicate places. [2023-08-04 04:08:56,274 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 84 transitions, 312 flow [2023-08-04 04:08:56,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 256.75) internal successors, (3081), 12 states have internal predecessors, (3081), 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 04:08:56,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:56,276 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:08:56,284 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 04:08:56,484 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 04:08:56,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:08:56,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash -827270500, now seen corresponding path program 3 times [2023-08-04 04:08:56,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:56,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784690258] [2023-08-04 04:08:56,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:56,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:56,614 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:08:56,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290791615] [2023-08-04 04:08:56,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 04:08:56,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:56,616 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 04:08:56,646 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 04:08:57,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-04 04:08:57,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:08:57,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:08:57,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:08:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-04 04:08:57,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:08:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-04 04:08:57,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:08:57,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784690258] [2023-08-04 04:08:57,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:08:57,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290791615] [2023-08-04 04:08:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290791615] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:08:57,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:08:57,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-04 04:08:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318017158] [2023-08-04 04:08:57,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:08:57,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:08:57,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:08:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:08:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:08:57,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-04 04:08:57,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 84 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 257.8333333333333) internal successors, (1547), 6 states have internal predecessors, (1547), 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 04:08:57,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:08:57,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-04 04:08:57,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:08:58,265 INFO L124 PetriNetUnfolderBase]: 5351/8689 cut-off events. [2023-08-04 04:08:58,266 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2023-08-04 04:08:58,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16830 conditions, 8689 events. 5351/8689 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52052 event pairs, 4400 based on Foata normal form. 3/6764 useless extension candidates. Maximal degree in co-relation 16523. Up to 7759 conditions per place. [2023-08-04 04:08:58,303 INFO L140 encePairwiseOnDemand]: 554/558 looper letters, 103 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2023-08-04 04:08:58,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 123 transitions, 879 flow [2023-08-04 04:08:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:08:58,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:08:58,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1602 transitions. [2023-08-04 04:08:58,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-08-04 04:08:58,312 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1602 transitions. [2023-08-04 04:08:58,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1602 transitions. [2023-08-04 04:08:58,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:08:58,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1602 transitions. [2023-08-04 04:08:58,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:08:58,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 04:08:58,323 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 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 04:08:58,323 INFO L175 Difference]: Start difference. First operand has 94 places, 84 transitions, 312 flow. Second operand 6 states and 1602 transitions. [2023-08-04 04:08:58,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 123 transitions, 879 flow [2023-08-04 04:08:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 123 transitions, 685 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-04 04:08:58,329 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 347 flow [2023-08-04 04:08:58,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2023-08-04 04:08:58,332 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 32 predicate places. [2023-08-04 04:08:58,333 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 347 flow [2023-08-04 04:08:58,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 257.8333333333333) internal successors, (1547), 6 states have internal predecessors, (1547), 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 04:08:58,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:08:58,334 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:08:58,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:08:58,540 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 04:08:58,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:08:58,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:08:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1775611448, now seen corresponding path program 4 times [2023-08-04 04:08:58,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:08:58,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846642210] [2023-08-04 04:08:58,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:08:58,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:08:59,001 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:08:59,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578665599] [2023-08-04 04:08:59,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-04 04:08:59,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:08:59,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:08:59,004 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 04:08:59,006 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 04:09:01,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-04 04:09:01,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 04:09:01,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 9528 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-04 04:09:01,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:09:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-08-04 04:09:01,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:09:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2023-08-04 04:09:01,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:09:01,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846642210] [2023-08-04 04:09:01,832 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-04 04:09:01,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578665599] [2023-08-04 04:09:01,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578665599] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:09:01,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-04 04:09:01,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-04 04:09:01,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241834728] [2023-08-04 04:09:01,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-04 04:09:01,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-04 04:09:01,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:09:01,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-04 04:09:01,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-04 04:09:01,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 558 [2023-08-04 04:09:01,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 347 flow. Second operand has 24 states, 24 states have (on average 256.5) internal successors, (6156), 24 states have internal predecessors, (6156), 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 04:09:01,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:09:01,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 558 [2023-08-04 04:09:01,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:09:03,831 INFO L124 PetriNetUnfolderBase]: 5351/8737 cut-off events. [2023-08-04 04:09:03,831 INFO L125 PetriNetUnfolderBase]: For 3689/3689 co-relation queries the response was YES. [2023-08-04 04:09:03,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 8737 events. 5351/8737 cut-off events. For 3689/3689 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52001 event pairs, 4400 based on Foata normal form. 48/6857 useless extension candidates. Maximal degree in co-relation 16528. Up to 7771 conditions per place. [2023-08-04 04:09:03,867 INFO L140 encePairwiseOnDemand]: 555/558 looper letters, 61 selfloop transitions, 24 changer transitions 0/99 dead transitions. [2023-08-04 04:09:03,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 99 transitions, 589 flow [2023-08-04 04:09:03,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-04 04:09:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-04 04:09:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6213 transitions. [2023-08-04 04:09:03,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4639336917562724 [2023-08-04 04:09:03,885 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6213 transitions. [2023-08-04 04:09:03,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6213 transitions. [2023-08-04 04:09:03,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:09:03,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6213 transitions. [2023-08-04 04:09:03,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 258.875) internal successors, (6213), 24 states have internal predecessors, (6213), 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 04:09:03,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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 04:09:03,936 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 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 04:09:03,937 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 347 flow. Second operand 24 states and 6213 transitions. [2023-08-04 04:09:03,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 99 transitions, 589 flow [2023-08-04 04:09:03,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 99 transitions, 581 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-04 04:09:03,941 INFO L231 Difference]: Finished difference. Result has 132 places, 99 transitions, 581 flow [2023-08-04 04:09:03,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=581, PETRI_PLACES=132, PETRI_TRANSITIONS=99} [2023-08-04 04:09:03,942 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2023-08-04 04:09:03,942 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 99 transitions, 581 flow [2023-08-04 04:09:03,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 256.5) internal successors, (6156), 24 states have internal predecessors, (6156), 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 04:09:03,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:09:03,944 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:09:03,977 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 04:09:04,144 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 04:09:04,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:09:04,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:09:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1993810376, now seen corresponding path program 5 times [2023-08-04 04:09:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:09:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548326508] [2023-08-04 04:09:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:09:04,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:09:04,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-04 04:09:04,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2095536949] [2023-08-04 04:09:04,998 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-04 04:09:04,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:09:04,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:09:05,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:09:05,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-04 04:22:47,445 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 04:22:47,445 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 04:22:48,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-04 04:22:48,657 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-04 04:22:48,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-04 04:22:48,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-04 04:22:48,699 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:22:48,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:22:48,699 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 108 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-04 04:22:48,700 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:22:48,700 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:22:48,700 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:22:48,700 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-04 04:22:48,703 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-04 04:22:48,706 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-04 04:22:48,706 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:22:48,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:22:48 BasicIcfg [2023-08-04 04:22:48,708 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:22:48,709 INFO L158 Benchmark]: Toolchain (without parser) took 873901.85ms. Allocated memory was 375.4MB in the beginning and 2.4GB in the end (delta: 2.0GB). Free memory was 321.0MB in the beginning and 1.6GB in the end (delta: -1.3GB). Peak memory consumption was 739.5MB. Max. memory is 16.0GB. [2023-08-04 04:22:48,709 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory is still 328.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:22:48,709 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.80ms. Allocated memory was 375.4MB in the beginning and 557.8MB in the end (delta: 182.5MB). Free memory was 320.7MB in the beginning and 522.4MB in the end (delta: -201.7MB). Peak memory consumption was 36.2MB. Max. memory is 16.0GB. [2023-08-04 04:22:48,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.85ms. Allocated memory is still 557.8MB. Free memory was 522.4MB in the beginning and 519.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:22:48,710 INFO L158 Benchmark]: Boogie Preprocessor took 53.78ms. Allocated memory is still 557.8MB. Free memory was 519.4MB in the beginning and 516.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 04:22:48,713 INFO L158 Benchmark]: RCFGBuilder took 664.02ms. Allocated memory is still 557.8MB. Free memory was 516.1MB in the beginning and 488.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-04 04:22:48,713 INFO L158 Benchmark]: TraceAbstraction took 872504.15ms. Allocated memory was 557.8MB in the beginning and 2.4GB in the end (delta: 1.9GB). Free memory was 488.1MB in the beginning and 1.6GB in the end (delta: -1.1GB). Peak memory consumption was 722.1MB. Max. memory is 16.0GB. [2023-08-04 04:22:48,715 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 375.4MB. Free memory is still 328.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 621.80ms. Allocated memory was 375.4MB in the beginning and 557.8MB in the end (delta: 182.5MB). Free memory was 320.7MB in the beginning and 522.4MB in the end (delta: -201.7MB). Peak memory consumption was 36.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.85ms. Allocated memory is still 557.8MB. Free memory was 522.4MB in the beginning and 519.4MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 53.78ms. Allocated memory is still 557.8MB. Free memory was 519.4MB in the beginning and 516.1MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 664.02ms. Allocated memory is still 557.8MB. Free memory was 516.1MB in the beginning and 488.9MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 872504.15ms. Allocated memory was 557.8MB in the beginning and 2.4GB in the end (delta: 1.9GB). Free memory was 488.1MB in the beginning and 1.6GB in the end (delta: -1.1GB). Peak memory consumption was 722.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 33.5s, 261 PlacesBefore, 66 PlacesAfterwards, 302 TransitionsBefore, 93 TransitionsAfterwards, 31320 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 38 ConcurrentYvCompositions, 14 ChoiceCompositions, 256 TotalNumberOfCompositions, 50902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27873, independent: 27467, independent conditional: 0, independent unconditional: 27467, dependent: 406, dependent conditional: 0, dependent unconditional: 406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15708, independent: 15630, independent conditional: 0, independent unconditional: 15630, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27873, independent: 11837, independent conditional: 0, independent unconditional: 11837, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 15708, unknown conditional: 0, unknown unconditional: 15708] , Statistics on independence cache: Total cache size (in pairs): 515, Positive cache size: 479, Positive conditional cache size: 0, Positive unconditional cache size: 479, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 108 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 108 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 399 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 872.3s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 33.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1209 IncrementalHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 2 mSDtfsCounter, 1209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 223 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=581occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 137 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 240 ConstructedInterpolants, 0 QuantifiedInterpolants, 368 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11205 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1917/2051 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown