/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:22:45,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:22:45,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:22:45,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:22:45,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:22:45,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:22:45,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:22:45,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:22:45,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:22:45,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:22:45,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:22:45,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:22:45,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:22:45,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:22:45,594 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:22:45,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:22:45,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:22:45,595 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:22:45,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:22:45,595 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:22:45,595 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:22:45,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:22:45,596 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:22:45,596 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:22:45,596 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:22:45,597 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:22:45,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:22:45,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:22:45,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:22:45,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:22:45,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:22:45,599 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:22:45,599 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:22:45,599 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:22:45,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:22:45,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:22:45,599 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:22:45,599 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:22:45,600 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:22:45,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:22:45,600 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:22:45,600 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:22:45,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:22:45,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:22:45,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:22:45,849 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:22:45,850 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:22:45,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i [2023-08-03 22:22:46,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:22:47,194 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:22:47,194 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i [2023-08-03 22:22:47,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46b77a5c5/b0d1ba424689419d827db45d9d80eb29/FLAG8c2cae9be [2023-08-03 22:22:47,226 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46b77a5c5/b0d1ba424689419d827db45d9d80eb29 [2023-08-03 22:22:47,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:22:47,231 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:22:47,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:22:47,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:22:47,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:22:47,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,240 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f10168d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47, skipping insertion in model container [2023-08-03 22:22:47,240 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,287 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:22:47,517 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i[30451,30464] [2023-08-03 22:22:47,523 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i[30681,30694] [2023-08-03 22:22:47,529 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i[30979,30992] [2023-08-03 22:22:47,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:22:47,556 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:22:47,571 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [208] [2023-08-03 22:22:47,573 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [209] [2023-08-03 22:22:47,588 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i[30451,30464] [2023-08-03 22:22:47,589 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i[30681,30694] [2023-08-03 22:22:47,590 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-deagle_circular_buffer_ok_bound2.i[30979,30992] [2023-08-03 22:22:47,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:22:47,628 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:22:47,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47 WrapperNode [2023-08-03 22:22:47,628 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:22:47,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:22:47,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:22:47,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:22:47,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,673 INFO L138 Inliner]: procedures = 168, calls = 36, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 174 [2023-08-03 22:22:47,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:22:47,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:22:47,675 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:22:47,675 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:22:47,682 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,688 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,688 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,701 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:22:47,715 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:22:47,715 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:22:47,715 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:22:47,716 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (1/1) ... [2023-08-03 22:22:47,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:22:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:22:47,753 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 22:22:47,767 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 22:22:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:22:47,794 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-03 22:22:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-03 22:22:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-03 22:22:47,795 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-03 22:22:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:22:47,795 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:22:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:22:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:22:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:22:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-08-03 22:22:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:22:47,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:22:47,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:22:47,798 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 22:22:47,975 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:22:47,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:22:48,305 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:22:48,313 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:22:48,313 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 22:22:48,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:22:48 BoogieIcfgContainer [2023-08-03 22:22:48,315 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:22:48,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:22:48,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:22:48,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:22:48,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:22:47" (1/3) ... [2023-08-03 22:22:48,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f402087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:22:48, skipping insertion in model container [2023-08-03 22:22:48,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:22:47" (2/3) ... [2023-08-03 22:22:48,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f402087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:22:48, skipping insertion in model container [2023-08-03 22:22:48,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:22:48" (3/3) ... [2023-08-03 22:22:48,327 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-deagle_circular_buffer_ok_bound2.i [2023-08-03 22:22:48,349 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:22:48,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:22:48,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 22:22:48,357 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:22:48,444 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 22:22:48,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 378 flow [2023-08-03 22:22:48,570 INFO L124 PetriNetUnfolderBase]: 38/319 cut-off events. [2023-08-03 22:22:48,570 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 22:22:48,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 319 events. 38/319 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1273 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-03 22:22:48,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 178 transitions, 378 flow [2023-08-03 22:22:48,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 178 transitions, 378 flow [2023-08-03 22:22:48,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:22:48,605 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 178 transitions, 378 flow [2023-08-03 22:22:48,609 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 178 transitions, 378 flow [2023-08-03 22:22:48,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 178 transitions, 378 flow [2023-08-03 22:22:48,670 INFO L124 PetriNetUnfolderBase]: 38/319 cut-off events. [2023-08-03 22:22:48,670 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 22:22:48,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 319 events. 38/319 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1273 event pairs, 0 based on Foata normal form. 0/271 useless extension candidates. Maximal degree in co-relation 161. Up to 8 conditions per place. [2023-08-03 22:22:48,683 INFO L119 LiptonReduction]: Number of co-enabled transitions 10790 [2023-08-03 22:22:53,078 INFO L134 LiptonReduction]: Checked pairs total: 22736 [2023-08-03 22:22:53,079 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-03 22:22:53,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:22:53,109 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;@6105de0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:22:53,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:22:53,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:22:53,115 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2023-08-03 22:22:53,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:22:53,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:22:53,116 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:22:53,117 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:22:53,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:22:53,121 INFO L85 PathProgramCache]: Analyzing trace with hash -722907505, now seen corresponding path program 1 times [2023-08-03 22:22:53,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:22:53,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927189180] [2023-08-03 22:22:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:22:53,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:22:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:22:53,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:22:53,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:22:53,337 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:22:53,338 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:22:53,339 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 22:22:53,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 22:22:53,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:22:53,341 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:22:53,344 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-03 22:22:53,345 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:22:53,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:22:53,390 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 22:22:53,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 265 transitions, 578 flow [2023-08-03 22:22:53,535 INFO L124 PetriNetUnfolderBase]: 143/931 cut-off events. [2023-08-03 22:22:53,535 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:22:53,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 931 events. 143/931 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5349 event pairs, 1 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 572. Up to 32 conditions per place. [2023-08-03 22:22:53,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 265 transitions, 578 flow [2023-08-03 22:22:53,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 265 transitions, 578 flow [2023-08-03 22:22:53,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:22:53,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 265 transitions, 578 flow [2023-08-03 22:22:53,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 265 transitions, 578 flow [2023-08-03 22:22:53,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 265 transitions, 578 flow [2023-08-03 22:22:53,728 INFO L124 PetriNetUnfolderBase]: 143/931 cut-off events. [2023-08-03 22:22:53,729 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:22:53,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 931 events. 143/931 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5349 event pairs, 1 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 572. Up to 32 conditions per place. [2023-08-03 22:22:53,777 INFO L119 LiptonReduction]: Number of co-enabled transitions 36332 [2023-08-03 22:22:58,480 INFO L134 LiptonReduction]: Checked pairs total: 112802 [2023-08-03 22:22:58,481 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-03 22:22:58,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:22:58,484 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;@6105de0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:22:58,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 22:22:58,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:22:58,492 INFO L124 PetriNetUnfolderBase]: 9/99 cut-off events. [2023-08-03 22:22:58,492 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-03 22:22:58,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:22:58,492 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:22:58,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:22:58,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:22:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1750247459, now seen corresponding path program 1 times [2023-08-03 22:22:58,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:22:58,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197965487] [2023-08-03 22:22:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:22:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:22:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:22:58,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:22:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:22:58,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197965487] [2023-08-03 22:22:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197965487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:22:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968647253] [2023-08-03 22:22:58,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:22:58,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:22:58,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:22:58,677 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 22:22:58,705 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 22:22:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:22:58,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:22:58,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:22:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:22:58,844 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:22:58,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968647253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:22:58,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:22:58,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:22:58,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089263913] [2023-08-03 22:22:58,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:22:58,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:22:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:22:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:22:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:22:58,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 467 [2023-08-03 22:22:58,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 102 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 229.6) internal successors, (1148), 5 states have internal predecessors, (1148), 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 22:22:58,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:22:58,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 467 [2023-08-03 22:22:58,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:23:54,451 INFO L124 PetriNetUnfolderBase]: 733824/971591 cut-off events. [2023-08-03 22:23:54,452 INFO L125 PetriNetUnfolderBase]: For 39168/39168 co-relation queries the response was YES. [2023-08-03 22:23:56,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1891336 conditions, 971591 events. 733824/971591 cut-off events. For 39168/39168 co-relation queries the response was YES. Maximal size of possible extension queue 29122. Compared 7415492 event pairs, 303671 based on Foata normal form. 42672/668194 useless extension candidates. Maximal degree in co-relation 248459. Up to 898712 conditions per place. [2023-08-03 22:24:00,092 INFO L140 encePairwiseOnDemand]: 460/467 looper letters, 107 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2023-08-03 22:24:00,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 540 flow [2023-08-03 22:24:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:24:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:24:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1257 transitions. [2023-08-03 22:24:00,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5383297644539614 [2023-08-03 22:24:00,108 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1257 transitions. [2023-08-03 22:24:00,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1257 transitions. [2023-08-03 22:24:00,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:24:00,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1257 transitions. [2023-08-03 22:24:00,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 251.4) internal successors, (1257), 5 states have internal predecessors, (1257), 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 22:24:00,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 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 22:24:00,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 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 22:24:00,138 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 252 flow. Second operand 5 states and 1257 transitions. [2023-08-03 22:24:00,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 540 flow [2023-08-03 22:24:00,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 136 transitions, 534 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:24:00,165 INFO L231 Difference]: Finished difference. Result has 90 places, 101 transitions, 257 flow [2023-08-03 22:24:00,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=90, PETRI_TRANSITIONS=101} [2023-08-03 22:24:00,170 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2023-08-03 22:24:00,171 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 101 transitions, 257 flow [2023-08-03 22:24:00,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.6) internal successors, (1148), 5 states have internal predecessors, (1148), 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 22:24:00,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:24:00,172 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 22:24:00,184 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 22:24:00,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:24:00,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:24:00,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:24:00,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1460316738, now seen corresponding path program 1 times [2023-08-03 22:24:00,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:24:00,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339001827] [2023-08-03 22:24:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:24:00,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:24:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:24:00,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 22:24:00,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:24:00,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339001827] [2023-08-03 22:24:00,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339001827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:24:00,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:24:00,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:24:00,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894166330] [2023-08-03 22:24:00,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:24:00,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:24:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:24:00,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:24:00,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:24:00,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 467 [2023-08-03 22:24:00,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 101 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:24:00,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:24:00,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 467 [2023-08-03 22:24:00,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:24:54,140 INFO L124 PetriNetUnfolderBase]: 733876/970524 cut-off events. [2023-08-03 22:24:54,140 INFO L125 PetriNetUnfolderBase]: For 33282/33282 co-relation queries the response was YES. [2023-08-03 22:24:56,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885285 conditions, 970524 events. 733876/970524 cut-off events. For 33282/33282 co-relation queries the response was YES. Maximal size of possible extension queue 29211. Compared 7314906 event pairs, 453289 based on Foata normal form. 1/624926 useless extension candidates. Maximal degree in co-relation 191759. Up to 897547 conditions per place. [2023-08-03 22:24:59,285 INFO L140 encePairwiseOnDemand]: 464/467 looper letters, 86 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-03 22:24:59,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 112 transitions, 454 flow [2023-08-03 22:24:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:24:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:24:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-03 22:24:59,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531763026409707 [2023-08-03 22:24:59,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-03 22:24:59,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-03 22:24:59,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:24:59,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-03 22:24:59,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 22:24:59,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:24:59,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:24:59,294 INFO L175 Difference]: Start difference. First operand has 90 places, 101 transitions, 257 flow. Second operand 3 states and 775 transitions. [2023-08-03 22:24:59,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 112 transitions, 454 flow [2023-08-03 22:24:59,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 112 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:24:59,310 INFO L231 Difference]: Finished difference. Result has 91 places, 100 transitions, 255 flow [2023-08-03 22:24:59,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=91, PETRI_TRANSITIONS=100} [2023-08-03 22:24:59,311 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-08-03 22:24:59,311 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 100 transitions, 255 flow [2023-08-03 22:24:59,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:24:59,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:24:59,312 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:24:59,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:24:59,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:24:59,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:24:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1567086956, now seen corresponding path program 1 times [2023-08-03 22:24:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:24:59,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168062348] [2023-08-03 22:24:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:24:59,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:24:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:24:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 22:24:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:24:59,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168062348] [2023-08-03 22:24:59,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168062348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:24:59,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316726405] [2023-08-03 22:24:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:24:59,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:24:59,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:24:59,398 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 22:24:59,401 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 22:24:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:24:59,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 22:24:59,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:24:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 22:24:59,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:24:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 22:24:59,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316726405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:24:59,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:24:59,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 22:24:59,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750987923] [2023-08-03 22:24:59,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:24:59,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:24:59,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:24:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:24:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:24:59,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 467 [2023-08-03 22:24:59,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 100 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 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 22:24:59,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:24:59,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 467 [2023-08-03 22:24:59,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:25:50,470 INFO L124 PetriNetUnfolderBase]: 717817/945957 cut-off events. [2023-08-03 22:25:50,470 INFO L125 PetriNetUnfolderBase]: For 32292/32292 co-relation queries the response was YES. [2023-08-03 22:25:52,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1840459 conditions, 945957 events. 717817/945957 cut-off events. For 32292/32292 co-relation queries the response was YES. Maximal size of possible extension queue 29553. Compared 7084716 event pairs, 281649 based on Foata normal form. 10/608392 useless extension candidates. Maximal degree in co-relation 335650. Up to 877494 conditions per place. [2023-08-03 22:25:55,534 INFO L140 encePairwiseOnDemand]: 464/467 looper letters, 107 selfloop transitions, 3 changer transitions 0/134 dead transitions. [2023-08-03 22:25:55,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 542 flow [2023-08-03 22:25:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:25:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:25:55,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1023 transitions. [2023-08-03 22:25:55,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547644539614561 [2023-08-03 22:25:55,537 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1023 transitions. [2023-08-03 22:25:55,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1023 transitions. [2023-08-03 22:25:55,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:25:55,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1023 transitions. [2023-08-03 22:25:55,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 255.75) internal successors, (1023), 4 states have internal predecessors, (1023), 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 22:25:55,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 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 22:25:55,544 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 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 22:25:55,544 INFO L175 Difference]: Start difference. First operand has 91 places, 100 transitions, 255 flow. Second operand 4 states and 1023 transitions. [2023-08-03 22:25:55,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 542 flow [2023-08-03 22:25:55,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 134 transitions, 538 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:25:55,548 INFO L231 Difference]: Finished difference. Result has 92 places, 99 transitions, 252 flow [2023-08-03 22:25:55,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=92, PETRI_TRANSITIONS=99} [2023-08-03 22:25:55,549 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2023-08-03 22:25:55,549 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 99 transitions, 252 flow [2023-08-03 22:25:55,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 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 22:25:55,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:25:55,550 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:25:55,560 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 22:25:55,755 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 22:25:55,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:25:55,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:25:55,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1543005705, now seen corresponding path program 1 times [2023-08-03 22:25:55,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:25:55,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601027229] [2023-08-03 22:25:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:25:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:25:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:25:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:25:55,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:25:55,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601027229] [2023-08-03 22:25:55,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601027229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:25:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135928200] [2023-08-03 22:25:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:25:55,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:25:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:25:55,862 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 22:25:55,864 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 22:25:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:25:55,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:25:55,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:25:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:25:55,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:25:55,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135928200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:25:55,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:25:55,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 22:25:55,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678171870] [2023-08-03 22:25:55,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:25:55,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:25:55,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:25:55,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:25:55,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:25:56,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 467 [2023-08-03 22:25:56,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 99 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 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 22:25:56,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:25:56,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 467 [2023-08-03 22:25:56,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:26:40,229 INFO L124 PetriNetUnfolderBase]: 648437/827798 cut-off events. [2023-08-03 22:26:40,229 INFO L125 PetriNetUnfolderBase]: For 13053/13053 co-relation queries the response was YES. [2023-08-03 22:26:41,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650862 conditions, 827798 events. 648437/827798 cut-off events. For 13053/13053 co-relation queries the response was YES. Maximal size of possible extension queue 23131. Compared 5751726 event pairs, 749 based on Foata normal form. 0/534331 useless extension candidates. Maximal degree in co-relation 907569. Up to 718128 conditions per place. [2023-08-03 22:26:42,429 INFO L140 encePairwiseOnDemand]: 463/467 looper letters, 0 selfloop transitions, 0 changer transitions 210/210 dead transitions. [2023-08-03 22:26:42,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 210 transitions, 844 flow [2023-08-03 22:26:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:26:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:26:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1327 transitions. [2023-08-03 22:26:42,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683083511777302 [2023-08-03 22:26:42,433 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1327 transitions. [2023-08-03 22:26:42,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1327 transitions. [2023-08-03 22:26:42,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:26:42,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1327 transitions. [2023-08-03 22:26:42,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 265.4) internal successors, (1327), 5 states have internal predecessors, (1327), 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 22:26:42,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 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 22:26:42,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 467.0) internal successors, (2802), 6 states have internal predecessors, (2802), 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 22:26:42,442 INFO L175 Difference]: Start difference. First operand has 92 places, 99 transitions, 252 flow. Second operand 5 states and 1327 transitions. [2023-08-03 22:26:42,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 210 transitions, 844 flow [2023-08-03 22:26:42,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 210 transitions, 832 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 22:26:42,780 INFO L231 Difference]: Finished difference. Result has 90 places, 0 transitions, 0 flow [2023-08-03 22:26:42,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=90, PETRI_TRANSITIONS=0} [2023-08-03 22:26:42,781 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2023-08-03 22:26:42,781 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 0 transitions, 0 flow [2023-08-03 22:26:42,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 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 22:26:42,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 22:26:42,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 22:26:42,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 22:26:42,987 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 22:26:42,988 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-03 22:26:42,988 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-03 22:26:42,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 265 transitions, 578 flow [2023-08-03 22:26:43,104 INFO L124 PetriNetUnfolderBase]: 143/931 cut-off events. [2023-08-03 22:26:43,105 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:26:43,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 931 events. 143/931 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5349 event pairs, 1 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 572. Up to 32 conditions per place. [2023-08-03 22:26:43,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 240 places, 265 transitions, 578 flow [2023-08-03 22:26:43,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 240 places, 265 transitions, 578 flow [2023-08-03 22:26:43,123 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:26:43,123 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 240 places, 265 transitions, 578 flow [2023-08-03 22:26:43,123 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 240 places, 265 transitions, 578 flow [2023-08-03 22:26:43,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 240 places, 265 transitions, 578 flow [2023-08-03 22:26:43,233 INFO L124 PetriNetUnfolderBase]: 143/931 cut-off events. [2023-08-03 22:26:43,233 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-03 22:26:43,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 931 events. 143/931 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5349 event pairs, 1 based on Foata normal form. 0/791 useless extension candidates. Maximal degree in co-relation 572. Up to 32 conditions per place. [2023-08-03 22:26:43,270 INFO L119 LiptonReduction]: Number of co-enabled transitions 36332 [2023-08-03 22:26:47,744 INFO L134 LiptonReduction]: Checked pairs total: 100836 [2023-08-03 22:26:47,744 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-03 22:26:47,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:26:47,746 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;@6105de0f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:26:47,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-03 22:26:47,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:26:47,751 INFO L124 PetriNetUnfolderBase]: 3/50 cut-off events. [2023-08-03 22:26:47,751 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 22:26:47,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:26:47,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:26:47,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err1ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:26:47,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:26:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash -264116321, now seen corresponding path program 1 times [2023-08-03 22:26:47,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:26:47,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39383232] [2023-08-03 22:26:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:26:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:26:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:26:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:26:47,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:26:47,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39383232] [2023-08-03 22:26:47,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39383232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:26:47,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:26:47,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:26:47,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941766340] [2023-08-03 22:26:47,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:26:47,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:26:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:26:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:26:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:26:47,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 467 [2023-08-03 22:26:47,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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 22:26:47,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:26:47,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 467 [2023-08-03 22:26:47,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:28:06,465 INFO L124 PetriNetUnfolderBase]: 992344/1363711 cut-off events. [2023-08-03 22:28:06,465 INFO L125 PetriNetUnfolderBase]: For 64104/64104 co-relation queries the response was YES. [2023-08-03 22:28:09,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2611843 conditions, 1363711 events. 992344/1363711 cut-off events. For 64104/64104 co-relation queries the response was YES. Maximal size of possible extension queue 30754. Compared 11235976 event pairs, 228654 based on Foata normal form. 19686/956562 useless extension candidates. Maximal degree in co-relation 1535403. Up to 968953 conditions per place. [2023-08-03 22:28:14,388 INFO L140 encePairwiseOnDemand]: 457/467 looper letters, 130 selfloop transitions, 3 changer transitions 0/156 dead transitions. [2023-08-03 22:28:14,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 156 transitions, 663 flow [2023-08-03 22:28:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:28:14,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:28:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 812 transitions. [2023-08-03 22:28:14,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5795860099928622 [2023-08-03 22:28:14,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 812 transitions. [2023-08-03 22:28:14,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 812 transitions. [2023-08-03 22:28:14,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:28:14,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 812 transitions. [2023-08-03 22:28:14,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.6666666666667) internal successors, (812), 3 states have internal predecessors, (812), 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 22:28:14,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:28:14,399 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:28:14,399 INFO L175 Difference]: Start difference. First operand has 87 places, 101 transitions, 250 flow. Second operand 3 states and 812 transitions. [2023-08-03 22:28:14,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 156 transitions, 663 flow [2023-08-03 22:28:14,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 156 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:28:14,455 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 269 flow [2023-08-03 22:28:14,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2023-08-03 22:28:14,456 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 3 predicate places. [2023-08-03 22:28:14,456 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 269 flow [2023-08-03 22:28:14,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.66666666666666) internal successors, (677), 3 states have internal predecessors, (677), 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 22:28:14,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:28:14,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:28:14,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:28:14,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err1ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:28:14,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:28:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1038026875, now seen corresponding path program 1 times [2023-08-03 22:28:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:28:14,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162794993] [2023-08-03 22:28:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:28:14,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:28:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:28:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:28:14,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:28:14,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162794993] [2023-08-03 22:28:14,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162794993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:28:14,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:28:14,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:28:14,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143395368] [2023-08-03 22:28:14,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:28:14,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:28:14,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:28:14,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:28:14,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:28:14,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 467 [2023-08-03 22:28:14,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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 22:28:14,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:28:14,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 467 [2023-08-03 22:28:14,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:29:29,293 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1351] L748-->L698: Formula: (and (< (mod v_~first~0_112 4294967296) (mod v_~buffer_size~0_164 4294967296)) (< 0 (mod v_~next~0_185 4294967296))) InVars {~next~0=v_~next~0_185, ~first~0=v_~first~0_112, ~buffer_size~0=v_~buffer_size~0_164} OutVars{~next~0=v_~next~0_185, ~first~0=v_~first~0_112, t2Thread1of2ForFork1_removeLogElement_#res#1=|v_t2Thread1of2ForFork1_removeLogElement_#res#1_44|, t2Thread1of2ForFork1_removeLogElement_#t~mem2#1=|v_t2Thread1of2ForFork1_removeLogElement_#t~mem2#1_44|, ~buffer_size~0=v_~buffer_size~0_164, t2Thread1of2ForFork1_removeLogElement_#t~post1#1=|v_t2Thread1of2ForFork1_removeLogElement_#t~post1#1_36|} AuxVars[] AssignedVars[t2Thread1of2ForFork1_removeLogElement_#res#1, t2Thread1of2ForFork1_removeLogElement_#t~mem2#1, t2Thread1of2ForFork1_removeLogElement_#t~post1#1][88], [57#L765-4true, t1Thread2of2ForFork0InUse, 248#true, 161#L713true, 74#L698true, Black: 245#(and (<= ~next~0 0) (= ~buffer_size~0 10) (<= 0 (div ~next~0 4294967296))), 243#true, 166#L713true, t2Thread1of2ForFork1InUse, t2Thread2of2ForFork1NotInUse, t1Thread1of2ForFork0InUse]) [2023-08-03 22:29:29,294 INFO L294 olderBase$Statistics]: this new event has 50 ancestors and is cut-off event [2023-08-03 22:29:29,294 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-03 22:29:29,294 INFO L297 olderBase$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-08-03 22:29:29,294 INFO L297 olderBase$Statistics]: existing Event has 47 ancestors and is cut-off event [2023-08-03 22:29:29,552 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1351] L748-->L698: Formula: (and (< (mod v_~first~0_112 4294967296) (mod v_~buffer_size~0_164 4294967296)) (< 0 (mod v_~next~0_185 4294967296))) InVars {~next~0=v_~next~0_185, ~first~0=v_~first~0_112, ~buffer_size~0=v_~buffer_size~0_164} OutVars{~next~0=v_~next~0_185, ~first~0=v_~first~0_112, t2Thread1of2ForFork1_removeLogElement_#res#1=|v_t2Thread1of2ForFork1_removeLogElement_#res#1_44|, t2Thread1of2ForFork1_removeLogElement_#t~mem2#1=|v_t2Thread1of2ForFork1_removeLogElement_#t~mem2#1_44|, ~buffer_size~0=v_~buffer_size~0_164, t2Thread1of2ForFork1_removeLogElement_#t~post1#1=|v_t2Thread1of2ForFork1_removeLogElement_#t~post1#1_36|} AuxVars[] AssignedVars[t2Thread1of2ForFork1_removeLogElement_#res#1, t2Thread1of2ForFork1_removeLogElement_#t~mem2#1, t2Thread1of2ForFork1_removeLogElement_#t~post1#1][88], [t1Thread2of2ForFork0InUse, 248#true, 161#L713true, 74#L698true, Black: 245#(and (<= ~next~0 0) (= ~buffer_size~0 10) (<= 0 (div ~next~0 4294967296))), 243#true, 166#L713true, t2Thread1of2ForFork1InUse, 127#L766-4true, t2Thread2of2ForFork1NotInUse, t1Thread1of2ForFork0InUse]) [2023-08-03 22:29:29,553 INFO L294 olderBase$Statistics]: this new event has 51 ancestors and is cut-off event [2023-08-03 22:29:29,553 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-03 22:29:29,553 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-08-03 22:29:29,553 INFO L297 olderBase$Statistics]: existing Event has 48 ancestors and is cut-off event [2023-08-03 22:29:30,804 INFO L124 PetriNetUnfolderBase]: 954577/1288473 cut-off events. [2023-08-03 22:29:30,804 INFO L125 PetriNetUnfolderBase]: For 103714/104007 co-relation queries the response was YES. [2023-08-03 22:29:35,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2539542 conditions, 1288473 events. 954577/1288473 cut-off events. For 103714/104007 co-relation queries the response was YES. Maximal size of possible extension queue 34308. Compared 10329213 event pairs, 607467 based on Foata normal form. 0/914482 useless extension candidates. Maximal degree in co-relation 1419032. Up to 1155283 conditions per place. [2023-08-03 22:29:41,413 INFO L140 encePairwiseOnDemand]: 464/467 looper letters, 83 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-08-03 22:29:41,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 113 transitions, 467 flow [2023-08-03 22:29:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:29:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:29:41,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-03 22:29:41,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517487508922199 [2023-08-03 22:29:41,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-03 22:29:41,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-03 22:29:41,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:29:41,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-03 22:29:41,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 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 22:29:41,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:29:41,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:29:41,433 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 269 flow. Second operand 3 states and 773 transitions. [2023-08-03 22:29:41,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 113 transitions, 467 flow [2023-08-03 22:29:41,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 113 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:29:41,570 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 278 flow [2023-08-03 22:29:41,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-08-03 22:29:41,572 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 5 predicate places. [2023-08-03 22:29:41,573 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 278 flow [2023-08-03 22:29:41,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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 22:29:41,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:29:41,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:29:41,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 22:29:41,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [t1Err1ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:29:41,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:29:41,574 INFO L85 PathProgramCache]: Analyzing trace with hash -414899854, now seen corresponding path program 1 times [2023-08-03 22:29:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:29:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34259799] [2023-08-03 22:29:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:29:41,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:29:41,616 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 22:29:41,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63806629] [2023-08-03 22:29:41,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:29:41,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:29:41,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:29:41,637 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 22:29:41,697 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 22:29:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:29:41,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:29:41,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:29:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:29:41,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:29:41,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:29:41,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34259799] [2023-08-03 22:29:41,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 22:29:41,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63806629] [2023-08-03 22:29:41,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63806629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:29:41,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:29:41,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 22:29:41,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125890324] [2023-08-03 22:29:41,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:29:41,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 22:29:41,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:29:41,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 22:29:41,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 22:29:44,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-08-03 22:29:46,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-08-03 22:29:47,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 467 [2023-08-03 22:29:47,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 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 22:29:47,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:29:47,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 467 [2023-08-03 22:29:47,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:30:57,199 INFO L124 PetriNetUnfolderBase]: 852987/1148101 cut-off events. [2023-08-03 22:30:57,200 INFO L125 PetriNetUnfolderBase]: For 133221/133221 co-relation queries the response was YES. [2023-08-03 22:31:01,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2305381 conditions, 1148101 events. 852987/1148101 cut-off events. For 133221/133221 co-relation queries the response was YES. Maximal size of possible extension queue 25767. Compared 8914684 event pairs, 640718 based on Foata normal form. 0/858001 useless extension candidates. Maximal degree in co-relation 2305256. Up to 1034575 conditions per place. [2023-08-03 22:31:06,715 INFO L140 encePairwiseOnDemand]: 464/467 looper letters, 74 selfloop transitions, 1 changer transitions 0/99 dead transitions. [2023-08-03 22:31:06,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 99 transitions, 424 flow [2023-08-03 22:31:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:31:06,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:31:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 737 transitions. [2023-08-03 22:31:06,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260528194147038 [2023-08-03 22:31:06,734 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 737 transitions. [2023-08-03 22:31:06,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 737 transitions. [2023-08-03 22:31:06,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:31:06,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 737 transitions. [2023-08-03 22:31:06,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 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 22:31:06,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:31:06,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 22:31:06,738 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 278 flow. Second operand 3 states and 737 transitions. [2023-08-03 22:31:06,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 99 transitions, 424 flow [2023-08-03 22:31:06,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:31:06,828 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 274 flow [2023-08-03 22:31:06,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2023-08-03 22:31:06,829 INFO L281 CegarLoopForPetriNet]: 87 programPoint places, 4 predicate places. [2023-08-03 22:31:06,830 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 274 flow [2023-08-03 22:31:06,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 223.25) internal successors, (893), 4 states have internal predecessors, (893), 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 22:31:06,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:31:06,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:31:06,836 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 22:31:07,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:31:07,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONERROR_FUNCTION === [t1Err1ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 22:31:07,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:31:07,037 INFO L85 PathProgramCache]: Analyzing trace with hash 23011168, now seen corresponding path program 1 times [2023-08-03 22:31:07,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:31:07,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200150800] [2023-08-03 22:31:07,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:31:07,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:31:07,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 22:31:07,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940073784] [2023-08-03 22:31:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:31:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:31:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:31:07,093 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 22:31:07,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 22:31:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:31:07,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 22:31:07,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:31:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:31:07,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:31:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:31:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200150800] [2023-08-03 22:31:07,315 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 22:31:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940073784] [2023-08-03 22:31:07,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940073784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:31:07,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:31:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 22:31:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184754988] [2023-08-03 22:31:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:31:07,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:31:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:31:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:31:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:31:07,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 467 [2023-08-03 22:31:07,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 223.8) internal successors, (1119), 5 states have internal predecessors, (1119), 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 22:31:07,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:31:07,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 467 [2023-08-03 22:31:07,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 22:31:57,910 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 22:31:57,911 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 22:31:58,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 22:31:58,946 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 22:31:59,785 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-08-03 22:31:59,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 22:31:59,786 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-03 22:31:59,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-03 22:31:59,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-03 22:31:59,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-03 22:31:59,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-08-03 22:31:59,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-03 22:31:59,786 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-03 22:31:59,787 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-03 22:31:59,787 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-03 22:31:59,787 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-03 22:31:59,787 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (2/2) [2023-08-03 22:31:59,789 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:31:59,789 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:31:59,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:31:59 BasicIcfg [2023-08-03 22:31:59,792 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:31:59,792 INFO L158 Benchmark]: Toolchain (without parser) took 552561.04ms. Allocated memory was 509.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 458.1MB in the beginning and 11.5GB in the end (delta: -11.1GB). Peak memory consumption was 10.2GB. Max. memory is 16.0GB. [2023-08-03 22:31:59,793 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory is still 305.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:31:59,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.06ms. Allocated memory is still 509.6MB. Free memory was 457.8MB in the beginning and 437.1MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 22:31:59,793 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.84ms. Allocated memory is still 509.6MB. Free memory was 437.1MB in the beginning and 434.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:31:59,793 INFO L158 Benchmark]: Boogie Preprocessor took 39.84ms. Allocated memory is still 509.6MB. Free memory was 434.4MB in the beginning and 432.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:31:59,794 INFO L158 Benchmark]: RCFGBuilder took 600.24ms. Allocated memory is still 509.6MB. Free memory was 432.6MB in the beginning and 413.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 22:31:59,794 INFO L158 Benchmark]: TraceAbstraction took 551475.08ms. Allocated memory was 509.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 412.8MB in the beginning and 11.5GB in the end (delta: -11.1GB). Peak memory consumption was 10.1GB. Max. memory is 16.0GB. [2023-08-03 22:31:59,795 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 356.5MB. Free memory is still 305.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 396.06ms. Allocated memory is still 509.6MB. Free memory was 457.8MB in the beginning and 437.1MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.84ms. Allocated memory is still 509.6MB. Free memory was 437.1MB in the beginning and 434.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.84ms. Allocated memory is still 509.6MB. Free memory was 434.4MB in the beginning and 432.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 600.24ms. Allocated memory is still 509.6MB. Free memory was 432.6MB in the beginning and 413.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 551475.08ms. Allocated memory was 509.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 412.8MB in the beginning and 11.5GB in the end (delta: -11.1GB). Peak memory consumption was 10.1GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 208]: Unsoundness Warning unspecified type, defaulting to int C: short [208] - GenericResultAtLocation [Line: 209]: Unsoundness Warning unspecified type, defaulting to int C: short [209] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 164 PlacesBefore, 48 PlacesAfterwards, 178 TransitionsBefore, 54 TransitionsAfterwards, 10790 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 78 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 21 ConcurrentYvCompositions, 8 ChoiceCompositions, 147 TotalNumberOfCompositions, 22736 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15171, independent: 14825, independent conditional: 0, independent unconditional: 14825, dependent: 346, dependent conditional: 0, dependent unconditional: 346, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5885, independent: 5830, independent conditional: 0, independent unconditional: 5830, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15171, independent: 8995, independent conditional: 0, independent unconditional: 8995, dependent: 291, dependent conditional: 0, dependent unconditional: 291, unknown: 5885, unknown conditional: 0, unknown unconditional: 5885] , Statistics on independence cache: Total cache size (in pairs): 448, Positive cache size: 426, Positive conditional cache size: 0, Positive unconditional cache size: 426, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 240 PlacesBefore, 88 PlacesAfterwards, 265 TransitionsBefore, 102 TransitionsAfterwards, 36332 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 117 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 34 ConcurrentYvCompositions, 11 ChoiceCompositions, 202 TotalNumberOfCompositions, 112802 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 59327, independent: 58482, independent conditional: 0, independent unconditional: 58482, dependent: 845, dependent conditional: 0, dependent unconditional: 845, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19225, independent: 19106, independent conditional: 0, independent unconditional: 19106, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 59327, independent: 39376, independent conditional: 0, independent unconditional: 39376, dependent: 726, dependent conditional: 0, dependent unconditional: 726, unknown: 19225, unknown conditional: 0, unknown unconditional: 19225] , Statistics on independence cache: Total cache size (in pairs): 2236, Positive cache size: 2184, Positive conditional cache size: 0, Positive unconditional cache size: 2184, Negative cache size: 52, Negative conditional cache size: 0, Negative unconditional cache size: 52, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 240 PlacesBefore, 87 PlacesAfterwards, 265 TransitionsBefore, 101 TransitionsAfterwards, 36332 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 117 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 34 ConcurrentYvCompositions, 11 ChoiceCompositions, 202 TotalNumberOfCompositions, 100836 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54913, independent: 54196, independent conditional: 0, independent unconditional: 54196, dependent: 717, dependent conditional: 0, dependent unconditional: 717, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19502, independent: 19383, independent conditional: 0, independent unconditional: 19383, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 54913, independent: 34813, independent conditional: 0, independent unconditional: 34813, dependent: 598, dependent conditional: 0, dependent unconditional: 598, unknown: 19502, unknown conditional: 0, unknown unconditional: 19502] , Statistics on independence cache: Total cache size (in pairs): 2318, Positive cache size: 2266, Positive conditional cache size: 0, Positive unconditional cache size: 2266, Negative cache size: 52, Negative conditional cache size: 0, Negative unconditional cache size: 52, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 731]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 714]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 749]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 232 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 304 locations, 11 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: 229.6s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 223.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 893 IncrementalHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 7 mSDtfsCounter, 893 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=1, InterpolantAutomatonStates: 17, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 218 SizeOfPredicates, 0 NumberOfNonLiveVariables, 603 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 66/79 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 304 locations, 11 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: 316.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 310.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 484 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 388 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1093 IncrementalHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 23 mSDtfsCounter, 1093 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 1 QuantifiedInterpolants, 156 SizeOfPredicates, 3 NumberOfNonLiveVariables, 329 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown