/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:16:22,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:16:22,564 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:16:22,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:16:22,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:16:22,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:16:22,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:16:22,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:16:22,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:16:22,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:16:22,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:16:22,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:16:22,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:16:22,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:16:22,613 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:16:22,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:16:22,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:16:22,614 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:16:22,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:16:22,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:16:22,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:16:22,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:16:22,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:16:22,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:16:22,616 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:16:22,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:16:22,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:16:22,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:16:22,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:16:22,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:16:22,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:16:22,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:16:22,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:16:22,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:16:22,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:16:22,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:16:22,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:16:22,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:16:22,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:16:22,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:16:22,620 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:16:22,620 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:16:22,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:16:22,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:16:22,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:16:22,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:16:22,878 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:16:22,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i [2023-08-04 04:16:24,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:16:24,340 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:16:24,340 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i [2023-08-04 04:16:24,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a56cb78/e570f5bbcdd348ca9b2121a150ab6bd6/FLAG32054a37d [2023-08-04 04:16:24,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a56cb78/e570f5bbcdd348ca9b2121a150ab6bd6 [2023-08-04 04:16:24,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:16:24,381 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:16:24,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:16:24,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:16:24,385 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:16:24,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5680377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24, skipping insertion in model container [2023-08-04 04:16:24,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,417 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:16:24,561 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-04 04:16:24,694 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i[31005,31018] [2023-08-04 04:16:24,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:16:24,713 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:16:24,738 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-04 04:16:24,743 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-04 04:16:24,745 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [269] [2023-08-04 04:16:24,770 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: volatile unsigned [704] [2023-08-04 04:16:24,772 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned [716] [2023-08-04 04:16:24,774 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_01b_inc_bound2.i[31005,31018] [2023-08-04 04:16:24,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:16:24,811 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:16:24,811 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:16:24,812 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:16:24,818 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:16:24,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24 WrapperNode [2023-08-04 04:16:24,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:16:24,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:16:24,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:16:24,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:16:24,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,878 INFO L138 Inliner]: procedures = 173, calls = 20, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 66 [2023-08-04 04:16:24,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:16:24,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:16:24,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:16:24,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:16:24,886 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,886 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,894 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,899 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:16:24,899 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:16:24,900 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:16:24,900 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:16:24,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (1/1) ... [2023-08-04 04:16:24,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:16:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:16:24,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:16:24,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:16:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-04 04:16:24,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-04 04:16:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:16:24,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 04:16:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:16:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:16:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:16:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:16:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 04:16:24,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:16:24,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:16:24,968 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:16:25,062 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:16:25,064 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:16:25,206 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:16:25,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:16:25,267 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-04 04:16:25,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:16:25 BoogieIcfgContainer [2023-08-04 04:16:25,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:16:25,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:16:25,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:16:25,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:16:25,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:16:24" (1/3) ... [2023-08-04 04:16:25,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79560958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:16:25, skipping insertion in model container [2023-08-04 04:16:25,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:16:24" (2/3) ... [2023-08-04 04:16:25,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79560958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:16:25, skipping insertion in model container [2023-08-04 04:16:25,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:16:25" (3/3) ... [2023-08-04 04:16:25,276 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_01b_inc_bound2.i [2023-08-04 04:16:25,283 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:16:25,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:16:25,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 04:16:25,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:16:25,328 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:16:25,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:25,379 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2023-08-04 04:16:25,379 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2023-08-04 04:16:25,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:25,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:25,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:16:25,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:25,399 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:25,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:25,412 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2023-08-04 04:16:25,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:25,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2023-08-04 04:16:25,414 INFO L119 LiptonReduction]: Number of co-enabled transitions 448 [2023-08-04 04:16:27,210 INFO L134 LiptonReduction]: Checked pairs total: 367 [2023-08-04 04:16:27,211 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-08-04 04:16:27,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:16:27,244 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;@415c0836, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:16:27,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 04:16:27,247 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:16:27,247 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-04 04:16:27,247 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:27,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:27,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:16:27,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:27,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:27,256 INFO L85 PathProgramCache]: Analyzing trace with hash 7836123, now seen corresponding path program 1 times [2023-08-04 04:16:27,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:27,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507687237] [2023-08-04 04:16:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:27,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:16:27,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507687237] [2023-08-04 04:16:27,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507687237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:16:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:16:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72068927] [2023-08-04 04:16:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:27,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:16:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:16:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:16:27,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 86 [2023-08-04 04:16:27,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:27,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:27,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 86 [2023-08-04 04:16:27,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:27,483 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2023-08-04 04:16:27,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:27,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 16 events. 3/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 24 event pairs, 3 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 20. Up to 15 conditions per place. [2023-08-04 04:16:27,485 INFO L140 encePairwiseOnDemand]: 85/86 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-04 04:16:27,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 7 transitions, 31 flow [2023-08-04 04:16:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:16:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:16:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 81 transitions. [2023-08-04 04:16:27,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47093023255813954 [2023-08-04 04:16:27,496 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 81 transitions. [2023-08-04 04:16:27,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 81 transitions. [2023-08-04 04:16:27,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:27,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 81 transitions. [2023-08-04 04:16:27,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:27,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:27,510 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:27,513 INFO L175 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 2 states and 81 transitions. [2023-08-04 04:16:27,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 7 transitions, 31 flow [2023-08-04 04:16:27,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:16:27,517 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-04 04:16:27,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=86, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-04 04:16:27,531 INFO L281 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2023-08-04 04:16:27,531 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-04 04:16:27,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:27,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-04 04:16:27,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-04 04:16:27,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:16:27,535 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:16:27,537 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-04 04:16:27,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:27,552 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2023-08-04 04:16:27,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:27,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2023-08-04 04:16:27,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:27,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:27,554 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:16:27,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:27,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:27,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 44 transitions, 93 flow [2023-08-04 04:16:27,564 INFO L124 PetriNetUnfolderBase]: 3/54 cut-off events. [2023-08-04 04:16:27,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:27,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 3/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2023-08-04 04:16:27,565 INFO L119 LiptonReduction]: Number of co-enabled transitions 448 [2023-08-04 04:16:29,121 INFO L134 LiptonReduction]: Checked pairs total: 378 [2023-08-04 04:16:29,121 INFO L136 LiptonReduction]: Total number of compositions: 43 [2023-08-04 04:16:29,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:16:29,124 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;@415c0836, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:16:29,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:16:29,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:16:29,129 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 04:16:29,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:16:29,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:29,129 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:16:29,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:16:29,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash 213236216, now seen corresponding path program 1 times [2023-08-04 04:16:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:29,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696164331] [2023-08-04 04:16:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:29,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:16:29,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:16:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:16:29,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:16:29,178 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:16:29,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:16:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:16:29,179 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:16:29,180 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:16:29,180 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:16:29,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:16:29,194 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:16:29,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:29,207 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-04 04:16:29,207 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:16:29,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-04 04:16:29,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:29,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:29,209 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:16:29,209 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:29,209 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:29,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:29,220 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-04 04:16:29,220 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:16:29,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-04 04:16:29,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 1316 [2023-08-04 04:16:30,255 INFO L134 LiptonReduction]: Checked pairs total: 3786 [2023-08-04 04:16:30,255 INFO L136 LiptonReduction]: Total number of compositions: 36 [2023-08-04 04:16:30,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:16:30,258 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;@415c0836, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:16:30,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:16:30,263 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:16:30,263 INFO L124 PetriNetUnfolderBase]: 1/22 cut-off events. [2023-08-04 04:16:30,263 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:16:30,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:30,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:16:30,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:30,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash -106262210, now seen corresponding path program 1 times [2023-08-04 04:16:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:30,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605220447] [2023-08-04 04:16:30,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:30,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:16:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605220447] [2023-08-04 04:16:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605220447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:30,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:16:30,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:16:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806358328] [2023-08-04 04:16:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:30,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:16:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:16:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:16:30,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 95 [2023-08-04 04:16:30,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:30,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:30,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 95 [2023-08-04 04:16:30,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:30,734 INFO L124 PetriNetUnfolderBase]: 478/841 cut-off events. [2023-08-04 04:16:30,735 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-08-04 04:16:30,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 841 events. 478/841 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4011 event pairs, 106 based on Foata normal form. 24/683 useless extension candidates. Maximal degree in co-relation 1561. Up to 284 conditions per place. [2023-08-04 04:16:30,742 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 42 selfloop transitions, 9 changer transitions 3/59 dead transitions. [2023-08-04 04:16:30,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 59 transitions, 248 flow [2023-08-04 04:16:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:16:30,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:16:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2023-08-04 04:16:30,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2023-08-04 04:16:30,745 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 292 transitions. [2023-08-04 04:16:30,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 292 transitions. [2023-08-04 04:16:30,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:30,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 292 transitions. [2023-08-04 04:16:30,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:30,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:30,750 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:30,750 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 6 states and 292 transitions. [2023-08-04 04:16:30,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 59 transitions, 248 flow [2023-08-04 04:16:30,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 59 transitions, 246 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 04:16:30,753 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 107 flow [2023-08-04 04:16:30,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-04 04:16:30,754 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-08-04 04:16:30,754 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 107 flow [2023-08-04 04:16:30,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:30,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:30,754 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:16:30,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:16:30,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:30,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash 872099680, now seen corresponding path program 1 times [2023-08-04 04:16:30,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:30,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175307791] [2023-08-04 04:16:30,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:30,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:16:30,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175307791] [2023-08-04 04:16:30,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175307791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:30,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:16:30,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:16:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6402104] [2023-08-04 04:16:30,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:16:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:16:30,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:16:31,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 95 [2023-08-04 04:16:31,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:31,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:31,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 95 [2023-08-04 04:16:31,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:31,210 INFO L124 PetriNetUnfolderBase]: 483/887 cut-off events. [2023-08-04 04:16:31,211 INFO L125 PetriNetUnfolderBase]: For 251/255 co-relation queries the response was YES. [2023-08-04 04:16:31,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 887 events. 483/887 cut-off events. For 251/255 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4493 event pairs, 103 based on Foata normal form. 4/745 useless extension candidates. Maximal degree in co-relation 1710. Up to 326 conditions per place. [2023-08-04 04:16:31,219 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 39 selfloop transitions, 11 changer transitions 3/59 dead transitions. [2023-08-04 04:16:31,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 59 transitions, 291 flow [2023-08-04 04:16:31,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:16:31,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:16:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 286 transitions. [2023-08-04 04:16:31,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017543859649123 [2023-08-04 04:16:31,224 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 286 transitions. [2023-08-04 04:16:31,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 286 transitions. [2023-08-04 04:16:31,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:31,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 286 transitions. [2023-08-04 04:16:31,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.666666666666664) internal successors, (286), 6 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:31,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:31,228 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:31,228 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 107 flow. Second operand 6 states and 286 transitions. [2023-08-04 04:16:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 59 transitions, 291 flow [2023-08-04 04:16:31,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 59 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:16:31,234 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 156 flow [2023-08-04 04:16:31,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-04 04:16:31,235 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2023-08-04 04:16:31,238 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 156 flow [2023-08-04 04:16:31,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:31,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:31,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:16:31,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:16:31,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:31,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1915430329, now seen corresponding path program 1 times [2023-08-04 04:16:31,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648314296] [2023-08-04 04:16:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:31,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:16:31,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:31,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648314296] [2023-08-04 04:16:31,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648314296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:16:31,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039026227] [2023-08-04 04:16:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:16:31,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:16:31,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:16:31,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:16:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:31,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-04 04:16:31,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:16:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:16:31,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:16:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:16:31,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039026227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:16:31,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:16:31,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 13 [2023-08-04 04:16:31,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351483961] [2023-08-04 04:16:31,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:16:31,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-04 04:16:31,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-04 04:16:31,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-04 04:16:32,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 95 [2023-08-04 04:16:32,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 156 flow. Second operand has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 15 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:32,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:32,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 95 [2023-08-04 04:16:32,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:33,038 INFO L124 PetriNetUnfolderBase]: 934/1620 cut-off events. [2023-08-04 04:16:33,039 INFO L125 PetriNetUnfolderBase]: For 1037/1037 co-relation queries the response was YES. [2023-08-04 04:16:33,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 1620 events. 934/1620 cut-off events. For 1037/1037 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 8953 event pairs, 62 based on Foata normal form. 52/1501 useless extension candidates. Maximal degree in co-relation 3953. Up to 215 conditions per place. [2023-08-04 04:16:33,048 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 92 selfloop transitions, 31 changer transitions 47/172 dead transitions. [2023-08-04 04:16:33,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 172 transitions, 865 flow [2023-08-04 04:16:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-04 04:16:33,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-04 04:16:33,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 989 transitions. [2023-08-04 04:16:33,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337719298245614 [2023-08-04 04:16:33,052 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 989 transitions. [2023-08-04 04:16:33,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 989 transitions. [2023-08-04 04:16:33,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:33,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 989 transitions. [2023-08-04 04:16:33,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 41.208333333333336) internal successors, (989), 24 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,059 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 95.0) internal successors, (2375), 25 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,059 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 156 flow. Second operand 24 states and 989 transitions. [2023-08-04 04:16:33,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 172 transitions, 865 flow [2023-08-04 04:16:33,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 172 transitions, 858 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:16:33,070 INFO L231 Difference]: Finished difference. Result has 77 places, 50 transitions, 366 flow [2023-08-04 04:16:33,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=366, PETRI_PLACES=77, PETRI_TRANSITIONS=50} [2023-08-04 04:16:33,073 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-08-04 04:16:33,073 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 50 transitions, 366 flow [2023-08-04 04:16:33,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 36.46666666666667) internal successors, (547), 15 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:33,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:16:33,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:16:33,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:16:33,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:33,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 29891219, now seen corresponding path program 1 times [2023-08-04 04:16:33,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:33,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077560879] [2023-08-04 04:16:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:33,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:33,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:16:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077560879] [2023-08-04 04:16:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077560879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:33,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:16:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:16:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303955923] [2023-08-04 04:16:33,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:33,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:16:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:16:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:16:33,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2023-08-04 04:16:33,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 50 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:33,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2023-08-04 04:16:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:33,673 INFO L124 PetriNetUnfolderBase]: 611/1157 cut-off events. [2023-08-04 04:16:33,673 INFO L125 PetriNetUnfolderBase]: For 4070/4086 co-relation queries the response was YES. [2023-08-04 04:16:33,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4626 conditions, 1157 events. 611/1157 cut-off events. For 4070/4086 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 6528 event pairs, 130 based on Foata normal form. 28/1059 useless extension candidates. Maximal degree in co-relation 4519. Up to 742 conditions per place. [2023-08-04 04:16:33,683 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 52 selfloop transitions, 13 changer transitions 6/79 dead transitions. [2023-08-04 04:16:33,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 661 flow [2023-08-04 04:16:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:16:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:16:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 313 transitions. [2023-08-04 04:16:33,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706766917293233 [2023-08-04 04:16:33,686 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 313 transitions. [2023-08-04 04:16:33,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 313 transitions. [2023-08-04 04:16:33,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:33,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 313 transitions. [2023-08-04 04:16:33,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.714285714285715) internal successors, (313), 7 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 95.0) internal successors, (760), 8 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,689 INFO L175 Difference]: Start difference. First operand has 77 places, 50 transitions, 366 flow. Second operand 7 states and 313 transitions. [2023-08-04 04:16:33,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 661 flow [2023-08-04 04:16:33,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 79 transitions, 589 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-08-04 04:16:33,713 INFO L231 Difference]: Finished difference. Result has 71 places, 52 transitions, 364 flow [2023-08-04 04:16:33,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=364, PETRI_PLACES=71, PETRI_TRANSITIONS=52} [2023-08-04 04:16:33,715 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2023-08-04 04:16:33,715 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 52 transitions, 364 flow [2023-08-04 04:16:33,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:33,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:16:33,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:16:33,715 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:33,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2066396641, now seen corresponding path program 2 times [2023-08-04 04:16:33,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330386340] [2023-08-04 04:16:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:16:33,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:33,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330386340] [2023-08-04 04:16:33,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330386340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:33,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:16:33,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-04 04:16:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043888419] [2023-08-04 04:16:33,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:33,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 04:16:33,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:33,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 04:16:33,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-04 04:16:33,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2023-08-04 04:16:33,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 52 transitions, 364 flow. Second operand has 7 states, 7 states have (on average 38.857142857142854) internal successors, (272), 7 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:33,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:33,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2023-08-04 04:16:33,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:34,097 INFO L124 PetriNetUnfolderBase]: 492/954 cut-off events. [2023-08-04 04:16:34,097 INFO L125 PetriNetUnfolderBase]: For 3142/3154 co-relation queries the response was YES. [2023-08-04 04:16:34,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 954 events. 492/954 cut-off events. For 3142/3154 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5272 event pairs, 26 based on Foata normal form. 36/877 useless extension candidates. Maximal degree in co-relation 3504. Up to 283 conditions per place. [2023-08-04 04:16:34,102 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 25 selfloop transitions, 6 changer transitions 41/76 dead transitions. [2023-08-04 04:16:34,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 590 flow [2023-08-04 04:16:34,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:16:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:16:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 347 transitions. [2023-08-04 04:16:34,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45657894736842103 [2023-08-04 04:16:34,104 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 347 transitions. [2023-08-04 04:16:34,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 347 transitions. [2023-08-04 04:16:34,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:34,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 347 transitions. [2023-08-04 04:16:34,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.375) internal successors, (347), 8 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,108 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,108 INFO L175 Difference]: Start difference. First operand has 71 places, 52 transitions, 364 flow. Second operand 8 states and 347 transitions. [2023-08-04 04:16:34,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 590 flow [2023-08-04 04:16:34,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 76 transitions, 555 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-04 04:16:34,136 INFO L231 Difference]: Finished difference. Result has 70 places, 24 transitions, 138 flow [2023-08-04 04:16:34,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=138, PETRI_PLACES=70, PETRI_TRANSITIONS=24} [2023-08-04 04:16:34,138 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-08-04 04:16:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 24 transitions, 138 flow [2023-08-04 04:16:34,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 38.857142857142854) internal successors, (272), 7 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:34,140 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:16:34,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:16:34,140 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:16:34,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1266873631, now seen corresponding path program 2 times [2023-08-04 04:16:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:34,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165868375] [2023-08-04 04:16:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:34,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:16:34,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165868375] [2023-08-04 04:16:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165868375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:34,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:16:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:16:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627922663] [2023-08-04 04:16:34,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:34,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:16:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:16:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:16:34,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2023-08-04 04:16:34,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 24 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:34,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2023-08-04 04:16:34,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:34,432 INFO L124 PetriNetUnfolderBase]: 110/256 cut-off events. [2023-08-04 04:16:34,432 INFO L125 PetriNetUnfolderBase]: For 723/727 co-relation queries the response was YES. [2023-08-04 04:16:34,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 256 events. 110/256 cut-off events. For 723/727 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1064 event pairs, 20 based on Foata normal form. 24/247 useless extension candidates. Maximal degree in co-relation 862. Up to 188 conditions per place. [2023-08-04 04:16:34,433 INFO L140 encePairwiseOnDemand]: 88/95 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-04 04:16:34,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 30 transitions, 191 flow [2023-08-04 04:16:34,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:16:34,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:16:34,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 250 transitions. [2023-08-04 04:16:34,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2023-08-04 04:16:34,435 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 250 transitions. [2023-08-04 04:16:34,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 250 transitions. [2023-08-04 04:16:34,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:34,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 250 transitions. [2023-08-04 04:16:34,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 41.666666666666664) internal successors, (250), 6 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,437 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 95.0) internal successors, (665), 7 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,437 INFO L175 Difference]: Start difference. First operand has 70 places, 24 transitions, 138 flow. Second operand 6 states and 250 transitions. [2023-08-04 04:16:34,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 30 transitions, 191 flow [2023-08-04 04:16:34,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 153 flow, removed 4 selfloop flow, removed 16 redundant places. [2023-08-04 04:16:34,439 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-04 04:16:34,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-04 04:16:34,441 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-08-04 04:16:34,441 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-04 04:16:34,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:34,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 04:16:34,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 04:16:34,441 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 04:16:34,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:16:34,442 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-08-04 04:16:34,443 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 04:16:34,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:34,455 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-04 04:16:34,455 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:16:34,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-04 04:16:34,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:34,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:34,456 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:16:34,456 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:34,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:34,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 59 transitions, 130 flow [2023-08-04 04:16:34,462 INFO L124 PetriNetUnfolderBase]: 5/84 cut-off events. [2023-08-04 04:16:34,462 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:16:34,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 5/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 55. Up to 6 conditions per place. [2023-08-04 04:16:34,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 1316 [2023-08-04 04:16:35,471 INFO L134 LiptonReduction]: Checked pairs total: 4313 [2023-08-04 04:16:35,471 INFO L136 LiptonReduction]: Total number of compositions: 36 [2023-08-04 04:16:35,472 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:16:35,473 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;@415c0836, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:16:35,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:16:35,475 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:16:35,476 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-08-04 04:16:35,476 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:16:35,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:16:35,476 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 04:16:35,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:16:35,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:16:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1572927454, now seen corresponding path program 1 times [2023-08-04 04:16:35,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:16:35,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815346814] [2023-08-04 04:16:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:35,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:16:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:16:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:16:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815346814] [2023-08-04 04:16:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815346814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:16:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539883759] [2023-08-04 04:16:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:16:35,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:16:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:16:35,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:16:35,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:16:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:16:35,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 04:16:35,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:16:35,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:16:35,589 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:16:35,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539883759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:16:35,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:16:35,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 04:16:35,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994581106] [2023-08-04 04:16:35,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:16:35,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:16:35,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:16:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:16:35,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:16:35,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 95 [2023-08-04 04:16:35,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:35,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:16:35,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 95 [2023-08-04 04:16:35,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:16:35,655 INFO L124 PetriNetUnfolderBase]: 146/274 cut-off events. [2023-08-04 04:16:35,656 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:16:35,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 274 events. 146/274 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1150 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 119. Up to 161 conditions per place. [2023-08-04 04:16:35,656 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-04 04:16:35,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 44 transitions, 166 flow [2023-08-04 04:16:35,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:16:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:16:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2023-08-04 04:16:35,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5073684210526316 [2023-08-04 04:16:35,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 241 transitions. [2023-08-04 04:16:35,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 241 transitions. [2023-08-04 04:16:35,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:16:35,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 241 transitions. [2023-08-04 04:16:35,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:35,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:35,660 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:35,660 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 5 states and 241 transitions. [2023-08-04 04:16:35,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 44 transitions, 166 flow [2023-08-04 04:16:35,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 44 transitions, 165 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:16:35,661 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-04 04:16:35,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-04 04:16:35,662 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-04 04:16:35,662 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-04 04:16:35,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.6) internal successors, (213), 5 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:16:35,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:16:35,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:16:35,868 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,SelfDestructingSolverStorable8 [2023-08-04 04:16:35,868 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:16:35,868 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:16:35,869 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:16:35,869 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:16:35,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:16:35 BasicIcfg [2023-08-04 04:16:35,873 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:16:35,874 INFO L158 Benchmark]: Toolchain (without parser) took 11493.19ms. Allocated memory was 490.7MB in the beginning and 589.3MB in the end (delta: 98.6MB). Free memory was 441.5MB in the beginning and 398.3MB in the end (delta: 43.1MB). Peak memory consumption was 144.7MB. Max. memory is 16.0GB. [2023-08-04 04:16:35,874 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 297.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:16:35,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.18ms. Allocated memory is still 490.7MB. Free memory was 441.2MB in the beginning and 421.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:16:35,874 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.81ms. Allocated memory is still 490.7MB. Free memory was 421.5MB in the beginning and 419.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:16:35,875 INFO L158 Benchmark]: Boogie Preprocessor took 19.69ms. Allocated memory is still 490.7MB. Free memory was 419.4MB in the beginning and 418.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:16:35,875 INFO L158 Benchmark]: RCFGBuilder took 370.04ms. Allocated memory is still 490.7MB. Free memory was 417.9MB in the beginning and 452.7MB in the end (delta: -34.8MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. [2023-08-04 04:16:35,875 INFO L158 Benchmark]: TraceAbstraction took 10602.44ms. Allocated memory was 490.7MB in the beginning and 589.3MB in the end (delta: 98.6MB). Free memory was 452.7MB in the beginning and 398.3MB in the end (delta: 54.3MB). Peak memory consumption was 153.9MB. Max. memory is 16.0GB. [2023-08-04 04:16:35,876 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 297.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 438.18ms. Allocated memory is still 490.7MB. Free memory was 441.2MB in the beginning and 421.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.81ms. Allocated memory is still 490.7MB. Free memory was 421.5MB in the beginning and 419.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.69ms. Allocated memory is still 490.7MB. Free memory was 419.4MB in the beginning and 418.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 370.04ms. Allocated memory is still 490.7MB. Free memory was 417.9MB in the beginning and 452.7MB in the end (delta: -34.8MB). Peak memory consumption was 18.1MB. Max. memory is 16.0GB. * TraceAbstraction took 10602.44ms. Allocated memory was 490.7MB in the beginning and 589.3MB in the end (delta: 98.6MB). Free memory was 452.7MB in the beginning and 398.3MB in the end (delta: 54.3MB). Peak memory consumption was 153.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 269]: Unsoundness Warning unspecified type, defaulting to int C: short [269] - GenericResultAtLocation [Line: 704]: Unsoundness Warning unspecified type, defaulting to int C: volatile unsigned [704] - GenericResultAtLocation [Line: 716]: Unsoundness Warning unspecified type, defaulting to int C: unsigned [716] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 45 PlacesBefore, 11 PlacesAfterwards, 44 TransitionsBefore, 8 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 42 TotalNumberOfCompositions, 367 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 367, independent: 367, independent conditional: 0, independent unconditional: 367, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 230, independent: 230, independent conditional: 0, independent unconditional: 230, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 367, independent: 137, independent conditional: 0, independent unconditional: 137, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 230, unknown conditional: 0, unknown unconditional: 230] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 45 PlacesBefore, 11 PlacesAfterwards, 44 TransitionsBefore, 8 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 43 TotalNumberOfCompositions, 378 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 378, independent: 378, independent conditional: 0, independent unconditional: 378, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 235, independent: 235, independent conditional: 0, independent unconditional: 235, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 378, independent: 143, independent conditional: 0, independent unconditional: 143, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 235, unknown conditional: 0, unknown unconditional: 235] , Statistics on independence cache: Total cache size (in pairs): 2, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 61 PlacesBefore, 29 PlacesAfterwards, 59 TransitionsBefore, 26 TransitionsAfterwards, 1316 CoEnabledTransitionPairs, 4 FixpointIterations, 12 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 3786 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1359, independent: 1205, independent conditional: 0, independent unconditional: 1205, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 614, independent: 589, independent conditional: 0, independent unconditional: 589, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1359, independent: 616, independent conditional: 0, independent unconditional: 616, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 614, unknown conditional: 0, unknown unconditional: 614] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.0s, 61 PlacesBefore, 29 PlacesAfterwards, 59 TransitionsBefore, 26 TransitionsAfterwards, 1316 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 36 TotalNumberOfCompositions, 4313 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1615, independent: 1429, independent conditional: 0, independent unconditional: 1429, dependent: 186, dependent conditional: 0, dependent unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 630, independent: 605, independent conditional: 0, independent unconditional: 605, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1615, independent: 824, independent conditional: 0, independent unconditional: 824, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 630, unknown conditional: 0, unknown unconditional: 630] , Statistics on independence cache: Total cache size (in pairs): 89, Positive cache size: 73, Positive conditional cache size: 0, Positive unconditional cache size: 73, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 726]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 3 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 with 2 thread instances CFG has 4 procedures, 71 locations, 4 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: 5.2s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 538 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 479 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1414 IncrementalHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 30 mSDtfsCounter, 1414 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=366occurred in iteration=3, InterpolantAutomatonStates: 57, 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, 1.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 1071 SizeOfPredicates, 5 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 11/14 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 1 thread instances CFG has 3 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.0s 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 4 procedures, 71 locations, 4 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: 1.4s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:16:35,903 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 Received shutdown request...