/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_91-arrayloop2_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:34:12,152 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:34:12,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:34:12,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:34:12,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:34:12,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:34:12,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:34:12,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:34:12,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:34:12,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:34:12,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:34:12,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:34:12,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:34:12,269 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:34:12,270 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:34:12,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:34:12,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:34:12,270 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:34:12,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:34:12,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:34:12,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:34:12,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:34:12,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:34:12,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:34:12,272 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:34:12,272 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:34:12,273 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:34:12,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:34:12,273 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:34:12,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:34:12,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:34:12,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:34:12,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:34:12,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:34:12,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:34:12,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:34:12,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:34:12,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:34:12,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:34:12,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:34:12,275 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:34:12,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:34:12,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:34:12,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:34:12,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:34:12,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:34:12,507 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:34:12,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_91-arrayloop2_racefree_bound2.i [2023-08-03 15:34:13,625 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:34:13,918 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:34:13,919 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_91-arrayloop2_racefree_bound2.i [2023-08-03 15:34:13,937 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d855ae5a9/771cef4a7b95444ea6a1cc32a1138fff/FLAG9dec23543 [2023-08-03 15:34:13,953 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d855ae5a9/771cef4a7b95444ea6a1cc32a1138fff [2023-08-03 15:34:13,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:34:13,961 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:34:13,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:34:13,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:34:13,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:34:13,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:34:13" (1/1) ... [2023-08-03 15:34:13,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df0a9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:13, skipping insertion in model container [2023-08-03 15:34:13,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:34:13" (1/1) ... [2023-08-03 15:34:14,020 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:34:14,396 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_91-arrayloop2_racefree_bound2.i[47038,47051] [2023-08-03 15:34:14,408 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,408 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,408 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,409 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:34:14,441 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:34:14,455 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:34:14,456 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:34:14,471 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_91-arrayloop2_racefree_bound2.i[47038,47051] [2023-08-03 15:34:14,473 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,474 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,474 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,474 WARN L1557 CHandler]: Possible shadowing of function new [2023-08-03 15:34:14,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:34:14,532 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:34:14,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14 WrapperNode [2023-08-03 15:34:14,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:34:14,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:34:14,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:34:14,533 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:34:14,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,576 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 184 [2023-08-03 15:34:14,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:34:14,577 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:34:14,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:34:14,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:34:14,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:34:14,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:34:14,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:34:14,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:34:14,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (1/1) ... [2023-08-03 15:34:14,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:34:14,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:14,651 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) [2023-08-03 15:34:14,652 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 [2023-08-03 15:34:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:34:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-03 15:34:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:34:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:34:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:34:14,676 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-03 15:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-03 15:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:34:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:34:14,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:34:14,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:34:14,678 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 15:34:14,809 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:34:14,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:34:15,061 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:34:15,080 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:34:15,081 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-03 15:34:15,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:34:15 BoogieIcfgContainer [2023-08-03 15:34:15,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:34:15,088 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:34:15,088 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:34:15,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:34:15,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:34:13" (1/3) ... [2023-08-03 15:34:15,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea90260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:34:15, skipping insertion in model container [2023-08-03 15:34:15,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:34:14" (2/3) ... [2023-08-03 15:34:15,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea90260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:34:15, skipping insertion in model container [2023-08-03 15:34:15,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:34:15" (3/3) ... [2023-08-03 15:34:15,094 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_91-arrayloop2_racefree_bound2.i [2023-08-03 15:34:15,101 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:34:15,109 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:34:15,109 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:34:15,109 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:34:15,190 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:34:15,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 184 transitions, 376 flow [2023-08-03 15:34:15,303 INFO L124 PetriNetUnfolderBase]: 26/200 cut-off events. [2023-08-03 15:34:15,303 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-03 15:34:15,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 200 events. 26/200 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 481 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2023-08-03 15:34:15,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 184 transitions, 376 flow [2023-08-03 15:34:15,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 179 transitions, 363 flow [2023-08-03 15:34:15,321 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:34:15,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 179 transitions, 363 flow [2023-08-03 15:34:15,337 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 179 transitions, 363 flow [2023-08-03 15:34:15,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 179 transitions, 363 flow [2023-08-03 15:34:15,385 INFO L124 PetriNetUnfolderBase]: 25/195 cut-off events. [2023-08-03 15:34:15,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:34:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 195 events. 25/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 423 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2023-08-03 15:34:15,391 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-08-03 15:34:30,884 WARN L233 SmtUtils]: Spent 5.01s 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) [2023-08-03 15:34:37,579 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-03 15:34:44,207 WARN L233 SmtUtils]: Spent 6.62s 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) [2023-08-03 15:34:44,468 INFO L134 LiptonReduction]: Checked pairs total: 3796 [2023-08-03 15:34:44,468 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-08-03 15:34:44,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:34:44,482 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;@7779e4ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:34:44,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 15:34:44,487 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:34:44,487 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2023-08-03 15:34:44,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:34:44,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:44,488 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-03 15:34:44,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:34:44,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:44,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1767713619, now seen corresponding path program 1 times [2023-08-03 15:34:44,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:44,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319441373] [2023-08-03 15:34:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:44,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:34:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:44,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:44,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319441373] [2023-08-03 15:34:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319441373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:34:44,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:34:44,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:34:44,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399139098] [2023-08-03 15:34:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:34:44,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:34:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:44,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:34:44,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:34:44,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 358 [2023-08-03 15:34:44,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-08-03 15:34:44,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:44,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 358 [2023-08-03 15:34:44,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:44,940 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2023-08-03 15:34:44,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:34:44,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 113 events. 48/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 287 event pairs, 33 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-08-03 15:34:44,943 INFO L140 encePairwiseOnDemand]: 345/358 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-03 15:34:44,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-08-03 15:34:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:34:44,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:34:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 513 transitions. [2023-08-03 15:34:44,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776536312849162 [2023-08-03 15:34:44,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 513 transitions. [2023-08-03 15:34:44,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 513 transitions. [2023-08-03 15:34:44,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:44,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 513 transitions. [2023-08-03 15:34:44,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.0) internal successors, (513), 3 states have internal predecessors, (513), 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) [2023-08-03 15:34:44,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2023-08-03 15:34:44,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2023-08-03 15:34:44,971 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 513 transitions. [2023-08-03 15:34:44,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-08-03 15:34:44,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:34:44,975 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-08-03 15:34:44,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-08-03 15:34:44,979 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-08-03 15:34:44,979 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-08-03 15:34:44,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2023-08-03 15:34:44,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:44,980 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:44,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:34:44,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:34:44,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash 549686375, now seen corresponding path program 1 times [2023-08-03 15:34:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716116178] [2023-08-03 15:34:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:44,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:34:45,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:45,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:45,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716116178] [2023-08-03 15:34:45,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716116178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:34:45,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:34:45,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:34:45,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458771179] [2023-08-03 15:34:45,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:34:45,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:34:45,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:45,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:34:45,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:34:45,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 358 [2023-08-03 15:34:45,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2023-08-03 15:34:45,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:45,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 358 [2023-08-03 15:34:45,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:45,279 INFO L124 PetriNetUnfolderBase]: 48/115 cut-off events. [2023-08-03 15:34:45,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:34:45,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 115 events. 48/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 212. Up to 100 conditions per place. [2023-08-03 15:34:45,280 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 15:34:45,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-08-03 15:34:45,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:34:45,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:34:45,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-03 15:34:45,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664804469273743 [2023-08-03 15:34:45,283 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-03 15:34:45,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-03 15:34:45,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:45,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-03 15:34:45,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 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) [2023-08-03 15:34:45,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2023-08-03 15:34:45,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 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) [2023-08-03 15:34:45,288 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 501 transitions. [2023-08-03 15:34:45,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-08-03 15:34:45,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:45,290 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-08-03 15:34:45,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-08-03 15:34:45,290 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-08-03 15:34:45,291 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-08-03 15:34:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 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) [2023-08-03 15:34:45,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:45,291 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:45,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:34:45,292 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:34:45,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash 333836697, now seen corresponding path program 1 times [2023-08-03 15:34:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:45,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842582554] [2023-08-03 15:34:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:45,321 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:45,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980525454] [2023-08-03 15:34:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:45,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:45,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:45,329 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) [2023-08-03 15:34:45,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 15:34:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:34:45,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:34:45,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:45,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:45,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:45,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:45,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842582554] [2023-08-03 15:34:45,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:45,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980525454] [2023-08-03 15:34:45,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980525454] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:45,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:45,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-03 15:34:45,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758903008] [2023-08-03 15:34:45,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:45,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:34:45,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:34:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:34:45,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 15:34:45,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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) [2023-08-03 15:34:45,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:45,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 15:34:45,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:45,926 INFO L124 PetriNetUnfolderBase]: 48/121 cut-off events. [2023-08-03 15:34:45,926 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:34:45,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 121 events. 48/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 300 event pairs, 33 based on Foata normal form. 6/102 useless extension candidates. Maximal degree in co-relation 219. Up to 100 conditions per place. [2023-08-03 15:34:45,927 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-03 15:34:45,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-08-03 15:34:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:34:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:34:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 977 transitions. [2023-08-03 15:34:45,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548417132216015 [2023-08-03 15:34:45,932 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 977 transitions. [2023-08-03 15:34:45,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 977 transitions. [2023-08-03 15:34:45,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:45,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 977 transitions. [2023-08-03 15:34:45,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.83333333333334) internal successors, (977), 6 states have internal predecessors, (977), 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) [2023-08-03 15:34:45,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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) [2023-08-03 15:34:45,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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) [2023-08-03 15:34:45,940 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 977 transitions. [2023-08-03 15:34:45,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-08-03 15:34:45,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:45,942 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-08-03 15:34:45,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-03 15:34:45,942 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-08-03 15:34:45,943 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-08-03 15:34:45,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 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) [2023-08-03 15:34:45,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:45,944 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:45,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 15:34:46,150 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 [2023-08-03 15:34:46,150 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:34:46,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:46,150 INFO L85 PathProgramCache]: Analyzing trace with hash 147605735, now seen corresponding path program 2 times [2023-08-03 15:34:46,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:46,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499752291] [2023-08-03 15:34:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:46,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:46,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:46,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1197526399] [2023-08-03 15:34:46,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 15:34:46,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:46,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:46,234 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) [2023-08-03 15:34:46,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 15:34:46,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 15:34:46,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:34:46,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 15:34:46,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:46,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 15:34:46,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499752291] [2023-08-03 15:34:46,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:46,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197526399] [2023-08-03 15:34:46,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197526399] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:46,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:46,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-03 15:34:46,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973972667] [2023-08-03 15:34:46,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:46,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-03 15:34:46,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:46,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-03 15:34:46,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-03 15:34:46,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 15:34:46,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 159.41666666666666) internal successors, (1913), 12 states have internal predecessors, (1913), 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) [2023-08-03 15:34:46,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:46,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 15:34:46,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:47,470 INFO L124 PetriNetUnfolderBase]: 48/133 cut-off events. [2023-08-03 15:34:47,470 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-03 15:34:47,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 133 events. 48/133 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 353 event pairs, 33 based on Foata normal form. 12/120 useless extension candidates. Maximal degree in co-relation 215. Up to 100 conditions per place. [2023-08-03 15:34:47,472 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-08-03 15:34:47,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-08-03 15:34:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 15:34:47,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 15:34:47,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1934 transitions. [2023-08-03 15:34:47,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45018621973929235 [2023-08-03 15:34:47,485 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1934 transitions. [2023-08-03 15:34:47,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1934 transitions. [2023-08-03 15:34:47,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:47,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1934 transitions. [2023-08-03 15:34:47,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 161.16666666666666) internal successors, (1934), 12 states have internal predecessors, (1934), 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) [2023-08-03 15:34:47,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 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) [2023-08-03 15:34:47,499 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 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) [2023-08-03 15:34:47,499 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 1934 transitions. [2023-08-03 15:34:47,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-08-03 15:34:47,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:47,502 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-08-03 15:34:47,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-03 15:34:47,502 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-08-03 15:34:47,503 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-08-03 15:34:47,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.41666666666666) internal successors, (1913), 12 states have internal predecessors, (1913), 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) [2023-08-03 15:34:47,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:47,504 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:34:47,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 15:34:47,714 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 [2023-08-03 15:34:47,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:34:47,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:47,715 INFO L85 PathProgramCache]: Analyzing trace with hash -695915609, now seen corresponding path program 3 times [2023-08-03 15:34:47,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:47,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696120569] [2023-08-03 15:34:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:47,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:47,856 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1139533067] [2023-08-03 15:34:47,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 15:34:47,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:47,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:47,863 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) [2023-08-03 15:34:47,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 15:34:48,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 15:34:48,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:34:48,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:34:48,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 15:34:48,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-03 15:34:48,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696120569] [2023-08-03 15:34:48,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:48,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139533067] [2023-08-03 15:34:48,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139533067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:48,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:48,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-03 15:34:48,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980583419] [2023-08-03 15:34:48,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:48,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:34:48,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:48,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:34:48,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:34:48,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 15:34:48,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 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) [2023-08-03 15:34:48,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:48,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 15:34:48,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:48,628 INFO L124 PetriNetUnfolderBase]: 50/160 cut-off events. [2023-08-03 15:34:48,629 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2023-08-03 15:34:48,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 160 events. 50/160 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 285 event pairs, 33 based on Foata normal form. 3/138 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-08-03 15:34:48,630 INFO L140 encePairwiseOnDemand]: 354/358 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-08-03 15:34:48,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-08-03 15:34:48,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:34:48,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:34:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 983 transitions. [2023-08-03 15:34:48,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45763500931098694 [2023-08-03 15:34:48,635 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 983 transitions. [2023-08-03 15:34:48,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 983 transitions. [2023-08-03 15:34:48,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:48,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 983 transitions. [2023-08-03 15:34:48,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.83333333333334) internal successors, (983), 6 states have internal predecessors, (983), 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) [2023-08-03 15:34:48,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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) [2023-08-03 15:34:48,640 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 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) [2023-08-03 15:34:48,640 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 983 transitions. [2023-08-03 15:34:48,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-08-03 15:34:48,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-03 15:34:48,645 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-08-03 15:34:48,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-03 15:34:48,646 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-08-03 15:34:48,646 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-08-03 15:34:48,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 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) [2023-08-03 15:34:48,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:48,647 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 15:34:48,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 15:34:48,855 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 [2023-08-03 15:34:48,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:34:48,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash -666220907, now seen corresponding path program 4 times [2023-08-03 15:34:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:48,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870241805] [2023-08-03 15:34:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:49,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747354954] [2023-08-03 15:34:49,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-03 15:34:49,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:49,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:49,284 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) [2023-08-03 15:34:49,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 15:34:51,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-03 15:34:51,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 15:34:51,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 9505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-03 15:34:51,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:34:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-03 15:34:51,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:34:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-03 15:34:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:34:51,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870241805] [2023-08-03 15:34:51,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:34:51,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747354954] [2023-08-03 15:34:51,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747354954] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:34:51,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-03 15:34:51,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-03 15:34:51,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397137115] [2023-08-03 15:34:51,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-03 15:34:51,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-03 15:34:51,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:34:51,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-03 15:34:51,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-03 15:34:52,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 358 [2023-08-03 15:34:52,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 159.33333333333334) internal successors, (3824), 24 states have internal predecessors, (3824), 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) [2023-08-03 15:34:52,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:34:52,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 358 [2023-08-03 15:34:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:34:53,620 INFO L124 PetriNetUnfolderBase]: 50/208 cut-off events. [2023-08-03 15:34:53,621 INFO L125 PetriNetUnfolderBase]: For 3489/3489 co-relation queries the response was YES. [2023-08-03 15:34:53,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 208 events. 50/208 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 285 event pairs, 33 based on Foata normal form. 48/231 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-08-03 15:34:53,622 INFO L140 encePairwiseOnDemand]: 355/358 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-08-03 15:34:53,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-08-03 15:34:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-03 15:34:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-03 15:34:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3848 transitions. [2023-08-03 15:34:53,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478584729981378 [2023-08-03 15:34:53,632 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3848 transitions. [2023-08-03 15:34:53,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3848 transitions. [2023-08-03 15:34:53,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:34:53,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3848 transitions. [2023-08-03 15:34:53,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 160.33333333333334) internal successors, (3848), 24 states have internal predecessors, (3848), 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) [2023-08-03 15:34:53,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 358.0) internal successors, (8950), 25 states have internal predecessors, (8950), 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) [2023-08-03 15:34:53,658 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 358.0) internal successors, (8950), 25 states have internal predecessors, (8950), 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) [2023-08-03 15:34:53,658 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 3848 transitions. [2023-08-03 15:34:53,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-08-03 15:34:53,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 15:34:53,663 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-08-03 15:34:53,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-08-03 15:34:53,664 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-08-03 15:34:53,664 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-08-03 15:34:53,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 159.33333333333334) internal successors, (3824), 24 states have internal predecessors, (3824), 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) [2023-08-03 15:34:53,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:34:53,668 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-03 15:34:53,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 15:34:53,893 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 [2023-08-03 15:34:53,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 15:34:53,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:34:53,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1410511509, now seen corresponding path program 5 times [2023-08-03 15:34:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:34:53,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877545527] [2023-08-03 15:34:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:34:53,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:34:54,719 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:34:54,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985950391] [2023-08-03 15:34:54,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-03 15:34:54,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:34:54,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:34:54,733 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) [2023-08-03 15:34:54,748 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... [2023-08-03 15:48:53,074 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 [2023-08-03 15:48:53,075 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 [2023-08-03 15:48:54,141 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 [2023-08-03 15:48:54,284 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-03 15:48:54,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-03 15:48:54,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-08-03 15:48:54,317 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 15:48:54,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:48:54,317 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-08-03 15:48:54,319 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-03 15:48:54,319 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-03 15:48:54,319 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-08-03 15:48:54,323 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-03 15:48:54,323 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:48:54,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:48:54 BasicIcfg [2023-08-03 15:48:54,326 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:48:54,326 INFO L158 Benchmark]: Toolchain (without parser) took 880365.41ms. Allocated memory was 511.7MB in the beginning and 614.5MB in the end (delta: 102.8MB). Free memory was 460.4MB in the beginning and 248.9MB in the end (delta: 211.5MB). Peak memory consumption was 314.7MB. Max. memory is 16.0GB. [2023-08-03 15:48:54,326 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory was 310.3MB in the beginning and 310.1MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:48:54,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.35ms. Allocated memory is still 511.7MB. Free memory was 460.0MB in the beginning and 429.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-03 15:48:54,327 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.04ms. Allocated memory is still 511.7MB. Free memory was 429.4MB in the beginning and 426.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 15:48:54,327 INFO L158 Benchmark]: Boogie Preprocessor took 37.56ms. Allocated memory is still 511.7MB. Free memory was 426.4MB in the beginning and 424.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:54,327 INFO L158 Benchmark]: RCFGBuilder took 471.22ms. Allocated memory is still 511.7MB. Free memory was 424.4MB in the beginning and 476.9MB in the end (delta: -52.5MB). Peak memory consumption was 28.0MB. Max. memory is 16.0GB. [2023-08-03 15:48:54,328 INFO L158 Benchmark]: TraceAbstraction took 879237.86ms. Allocated memory was 511.7MB in the beginning and 614.5MB in the end (delta: 102.8MB). Free memory was 475.8MB in the beginning and 248.9MB in the end (delta: 226.9MB). Peak memory consumption was 328.6MB. Max. memory is 16.0GB. [2023-08-03 15:48:54,329 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory was 310.3MB in the beginning and 310.1MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 570.35ms. Allocated memory is still 511.7MB. Free memory was 460.0MB in the beginning and 429.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.04ms. Allocated memory is still 511.7MB. Free memory was 429.4MB in the beginning and 426.4MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.56ms. Allocated memory is still 511.7MB. Free memory was 426.4MB in the beginning and 424.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 471.22ms. Allocated memory is still 511.7MB. Free memory was 424.4MB in the beginning and 476.9MB in the end (delta: -52.5MB). Peak memory consumption was 28.0MB. Max. memory is 16.0GB. * TraceAbstraction took 879237.86ms. Allocated memory was 511.7MB in the beginning and 614.5MB in the end (delta: 102.8MB). Free memory was 475.8MB in the beginning and 248.9MB in the end (delta: 226.9MB). Peak memory consumption was 328.6MB. 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: 29.1s, 159 PlacesBefore, 25 PlacesAfterwards, 179 TransitionsBefore, 36 TransitionsAfterwards, 3828 CoEnabledTransitionPairs, 6 FixpointIterations, 60 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 19 ConcurrentYvCompositions, 9 ChoiceCompositions, 174 TotalNumberOfCompositions, 3796 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3195, independent: 3129, independent conditional: 0, independent unconditional: 3129, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1955, independent: 1934, independent conditional: 0, independent unconditional: 1934, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3195, independent: 1195, independent conditional: 0, independent unconditional: 1195, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 1955, unknown conditional: 0, unknown unconditional: 1955] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1061]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 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 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 232 locations, 3 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: 879.1s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 29.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 196 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 687 IncrementalHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 16 mSDtfsCounter, 687 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred 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: 0.6s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11113 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 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