/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 22:05:33,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 22:05:33,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 22:05:33,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 22:05:33,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 22:05:33,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 22:05:33,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 22:05:33,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 22:05:33,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 22:05:33,939 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 22:05:33,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 22:05:33,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 22:05:33,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 22:05:33,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 22:05:33,941 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 22:05:33,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 22:05:33,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 22:05:33,942 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 22:05:33,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 22:05:33,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 22:05:33,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 22:05:33,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 22:05:33,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 22:05:33,943 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 22:05:33,943 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 22:05:33,943 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 22:05:33,943 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 22:05:33,944 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 22:05:33,944 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 22:05:33,944 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 22:05:33,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:05:33,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 22:05:33,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 22:05:33,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 22:05:33,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 22:05:33,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 22:05:33,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 22:05:33,947 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 22:05:33,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 22:05:33,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 22:05:33,948 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 22:05:33,948 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 22:05:34,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 22:05:34,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 22:05:34,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 22:05:34,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 22:05:34,188 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 22:05:34,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-03 22:05:35,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 22:05:35,504 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 22:05:35,504 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-03 22:05:35,515 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1ac3d02/1ef0bea14e504a9da3f8f7c529ea0617/FLAG4ad9e098b [2023-08-03 22:05:35,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff1ac3d02/1ef0bea14e504a9da3f8f7c529ea0617 [2023-08-03 22:05:35,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 22:05:35,529 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 22:05:35,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 22:05:35,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 22:05:35,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 22:05:35,533 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b56792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35, skipping insertion in model container [2023-08-03 22:05:35,534 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,566 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 22:05:35,678 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i[1095,1108] [2023-08-03 22:05:35,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:05:35,793 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 22:05:35,806 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_20-publish-regression_true_bound2.i[1095,1108] [2023-08-03 22:05:35,821 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 22:05:35,823 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 22:05:35,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 22:05:35,882 INFO L206 MainTranslator]: Completed translation [2023-08-03 22:05:35,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35 WrapperNode [2023-08-03 22:05:35,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 22:05:35,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 22:05:35,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 22:05:35,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 22:05:35,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,918 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2023-08-03 22:05:35,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 22:05:35,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 22:05:35,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 22:05:35,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 22:05:35,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 22:05:35,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 22:05:35,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 22:05:35,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 22:05:35,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (1/1) ... [2023-08-03 22:05:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 22:05:35,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:05:35,975 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 22:05:35,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 22:05:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 22:05:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 22:05:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 22:05:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 22:05:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 22:05:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 22:05:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 22:05:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 22:05:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 22:05:36,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 22:05:36,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 22:05:36,010 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 22:05:36,133 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 22:05:36,138 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 22:05:36,277 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 22:05:36,283 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 22:05:36,283 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 22:05:36,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:05:36 BoogieIcfgContainer [2023-08-03 22:05:36,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 22:05:36,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 22:05:36,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 22:05:36,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 22:05:36,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 10:05:35" (1/3) ... [2023-08-03 22:05:36,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e6d34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:05:36, skipping insertion in model container [2023-08-03 22:05:36,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 10:05:35" (2/3) ... [2023-08-03 22:05:36,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e6d34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 10:05:36, skipping insertion in model container [2023-08-03 22:05:36,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 10:05:36" (3/3) ... [2023-08-03 22:05:36,293 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_20-publish-regression_true_bound2.i [2023-08-03 22:05:36,298 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 22:05:36,304 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 22:05:36,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 22:05:36,305 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 22:05:36,370 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 22:05:36,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 95 transitions, 198 flow [2023-08-03 22:05:36,442 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-08-03 22:05:36,443 INFO L125 PetriNetUnfolderBase]: For 1/2 co-relation queries the response was YES. [2023-08-03 22:05:36,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 122 events. 9/122 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 197 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2023-08-03 22:05:36,449 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 95 transitions, 198 flow [2023-08-03 22:05:36,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 89 transitions, 183 flow [2023-08-03 22:05:36,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:05:36,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 89 transitions, 183 flow [2023-08-03 22:05:36,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 89 transitions, 183 flow [2023-08-03 22:05:36,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 89 transitions, 183 flow [2023-08-03 22:05:36,506 INFO L124 PetriNetUnfolderBase]: 8/116 cut-off events. [2023-08-03 22:05:36,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:05:36,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 8/116 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 191 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 60. Up to 4 conditions per place. [2023-08-03 22:05:36,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 1452 [2023-08-03 22:05:39,164 INFO L134 LiptonReduction]: Checked pairs total: 2877 [2023-08-03 22:05:39,165 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-03 22:05:39,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:05:39,181 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;@780740ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:05:39,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:05:39,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:05:39,186 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-03 22:05:39,186 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:05:39,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:39,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 22:05:39,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:05:39,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:39,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2046509040, now seen corresponding path program 1 times [2023-08-03 22:05:39,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:39,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527635069] [2023-08-03 22:05:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:39,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:05:39,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 22:05:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 22:05:39,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 22:05:39,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 22:05:39,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:05:39,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 22:05:39,326 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:05:39,328 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 22:05:39,329 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 22:05:39,329 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 22:05:39,346 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 22:05:39,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:39,378 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-03 22:05:39,378 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:05:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-03 22:05:39,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:39,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 118 transitions, 254 flow [2023-08-03 22:05:39,381 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:05:39,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 118 transitions, 254 flow [2023-08-03 22:05:39,382 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 118 transitions, 254 flow [2023-08-03 22:05:39,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 118 transitions, 254 flow [2023-08-03 22:05:39,406 INFO L124 PetriNetUnfolderBase]: 16/196 cut-off events. [2023-08-03 22:05:39,407 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:05:39,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 196 events. 16/196 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 461 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 123. Up to 8 conditions per place. [2023-08-03 22:05:39,411 INFO L119 LiptonReduction]: Number of co-enabled transitions 4356 [2023-08-03 22:05:41,704 INFO L134 LiptonReduction]: Checked pairs total: 12069 [2023-08-03 22:05:41,704 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-03 22:05:41,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 22:05:41,707 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;@780740ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:05:41,707 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 22:05:41,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:05:41,712 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2023-08-03 22:05:41,712 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 22:05:41,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:41,713 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 22:05:41,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 22:05:41,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:41,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1960635164, now seen corresponding path program 1 times [2023-08-03 22:05:41,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349018474] [2023-08-03 22:05:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:41,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:41,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349018474] [2023-08-03 22:05:41,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349018474] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:05:41,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411543351] [2023-08-03 22:05:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:41,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:05:41,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:05:41,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:05:41,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 22:05:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:41,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 22:05:41,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:05:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:42,022 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 22:05:42,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411543351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:05:42,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 22:05:42,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 22:05:42,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468189145] [2023-08-03 22:05:42,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:05:42,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:05:42,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:42,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:05:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 22:05:42,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 221 [2023-08-03 22:05:42,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:42,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:42,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 221 [2023-08-03 22:05:42,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:42,331 INFO L124 PetriNetUnfolderBase]: 1195/2027 cut-off events. [2023-08-03 22:05:42,331 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-03 22:05:42,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 2027 events. 1195/2027 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11733 event pairs, 0 based on Foata normal form. 0/1668 useless extension candidates. Maximal degree in co-relation 555. Up to 1780 conditions per place. [2023-08-03 22:05:42,339 INFO L140 encePairwiseOnDemand]: 215/221 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2023-08-03 22:05:42,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 258 flow [2023-08-03 22:05:42,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 22:05:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 22:05:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2023-08-03 22:05:42,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104072398190045 [2023-08-03 22:05:42,356 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2023-08-03 22:05:42,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2023-08-03 22:05:42,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:42,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2023-08-03 22:05:42,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:42,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:42,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 221.0) internal successors, (1326), 6 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:42,374 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 100 flow. Second operand 5 states and 564 transitions. [2023-08-03 22:05:42,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 258 flow [2023-08-03 22:05:42,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:05:42,379 INFO L231 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2023-08-03 22:05:42,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=221, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2023-08-03 22:05:42,383 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-03 22:05:42,383 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2023-08-03 22:05:42,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:42,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 22:05:42,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 22:05:42,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:05:42,592 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 22:05:42,592 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 22:05:42,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:42,610 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-03 22:05:42,610 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:05:42,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-03 22:05:42,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:42,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:42,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 22:05:42,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:42,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:42,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 119 transitions, 256 flow [2023-08-03 22:05:42,626 INFO L124 PetriNetUnfolderBase]: 16/197 cut-off events. [2023-08-03 22:05:42,626 INFO L125 PetriNetUnfolderBase]: For 6/8 co-relation queries the response was YES. [2023-08-03 22:05:42,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 197 events. 16/197 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 472 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 124. Up to 8 conditions per place. [2023-08-03 22:05:42,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 4356 [2023-08-03 22:05:45,057 INFO L134 LiptonReduction]: Checked pairs total: 13582 [2023-08-03 22:05:45,057 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-03 22:05:45,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 22:05:45,060 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;@780740ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 22:05:45,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 22:05:45,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 22:05:45,061 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-03 22:05:45,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 22:05:45,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:45,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-03 22:05:45,061 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 22:05:45,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:45,062 INFO L85 PathProgramCache]: Analyzing trace with hash 712, now seen corresponding path program 1 times [2023-08-03 22:05:45,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:45,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066528968] [2023-08-03 22:05:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:45,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:45,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:45,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066528968] [2023-08-03 22:05:45,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066528968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:05:45,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:05:45,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-03 22:05:45,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316762839] [2023-08-03 22:05:45,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:05:45,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-03 22:05:45,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:45,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-03 22:05:45,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-03 22:05:45,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 228 [2023-08-03 22:05:45,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:45,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 228 [2023-08-03 22:05:45,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:45,245 INFO L124 PetriNetUnfolderBase]: 1339/2440 cut-off events. [2023-08-03 22:05:45,245 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-03 22:05:45,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 2440 events. 1339/2440 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13847 event pairs, 1328 based on Foata normal form. 0/1972 useless extension candidates. Maximal degree in co-relation 2360. Up to 2204 conditions per place. [2023-08-03 22:05:45,256 INFO L140 encePairwiseOnDemand]: 225/228 looper letters, 30 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-03 22:05:45,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 152 flow [2023-08-03 22:05:45,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-03 22:05:45,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-03 22:05:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 243 transitions. [2023-08-03 22:05:45,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5328947368421053 [2023-08-03 22:05:45,258 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 243 transitions. [2023-08-03 22:05:45,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 243 transitions. [2023-08-03 22:05:45,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:45,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 243 transitions. [2023-08-03 22:05:45,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,260 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,260 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 102 flow. Second operand 2 states and 243 transitions. [2023-08-03 22:05:45,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 152 flow [2023-08-03 22:05:45,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:05:45,262 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 92 flow [2023-08-03 22:05:45,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-03 22:05:45,263 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -2 predicate places. [2023-08-03 22:05:45,263 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 92 flow [2023-08-03 22:05:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:45,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-03 22:05:45,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 22:05:45,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 22:05:45,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash 707149, now seen corresponding path program 1 times [2023-08-03 22:05:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:45,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411022629] [2023-08-03 22:05:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:45,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:45,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:45,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411022629] [2023-08-03 22:05:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411022629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:05:45,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:05:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:05:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714574053] [2023-08-03 22:05:45,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:05:45,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:05:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:05:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:05:45,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 228 [2023-08-03 22:05:45,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:45,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 228 [2023-08-03 22:05:45,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:45,489 INFO L124 PetriNetUnfolderBase]: 1338/2401 cut-off events. [2023-08-03 22:05:45,489 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-03 22:05:45,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4672 conditions, 2401 events. 1338/2401 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13742 event pairs, 608 based on Foata normal form. 0/1945 useless extension candidates. Maximal degree in co-relation 4667. Up to 2189 conditions per place. [2023-08-03 22:05:45,498 INFO L140 encePairwiseOnDemand]: 225/228 looper letters, 38 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-03 22:05:45,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 192 flow [2023-08-03 22:05:45,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:05:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:05:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-03 22:05:45,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2023-08-03 22:05:45,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-03 22:05:45,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-03 22:05:45,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:45,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-03 22:05:45,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,503 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 92 flow. Second operand 3 states and 344 transitions. [2023-08-03 22:05:45,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 192 flow [2023-08-03 22:05:45,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 22:05:45,505 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 104 flow [2023-08-03 22:05:45,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-03 22:05:45,506 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-03 22:05:45,506 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 104 flow [2023-08-03 22:05:45,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:45,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:05:45,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 22:05:45,507 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 22:05:45,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:45,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1158426434, now seen corresponding path program 1 times [2023-08-03 22:05:45,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:45,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718428727] [2023-08-03 22:05:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:45,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:45,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:45,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718428727] [2023-08-03 22:05:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718428727] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:05:45,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333834668] [2023-08-03 22:05:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:45,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:05:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:05:45,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:05:45,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 22:05:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:45,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 22:05:45,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:05:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:45,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:05:45,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333834668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:05:45,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:05:45,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 22:05:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664610163] [2023-08-03 22:05:45,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:05:45,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 22:05:45,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 22:05:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 22:05:45,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 228 [2023-08-03 22:05:45,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:45,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 228 [2023-08-03 22:05:45,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:45,842 INFO L124 PetriNetUnfolderBase]: 1305/2215 cut-off events. [2023-08-03 22:05:45,843 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-08-03 22:05:45,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 2215 events. 1305/2215 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 12066 event pairs, 73 based on Foata normal form. 9/1870 useless extension candidates. Maximal degree in co-relation 4602. Up to 1717 conditions per place. [2023-08-03 22:05:45,852 INFO L140 encePairwiseOnDemand]: 224/228 looper letters, 53 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 22:05:45,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 270 flow [2023-08-03 22:05:45,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:05:45,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:05:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2023-08-03 22:05:45,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021929824561403 [2023-08-03 22:05:45,854 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 458 transitions. [2023-08-03 22:05:45,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 458 transitions. [2023-08-03 22:05:45,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:45,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 458 transitions. [2023-08-03 22:05:45,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,858 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 104 flow. Second operand 4 states and 458 transitions. [2023-08-03 22:05:45,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 270 flow [2023-08-03 22:05:45,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 64 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 22:05:45,863 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 122 flow [2023-08-03 22:05:45,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-08-03 22:05:45,866 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-03 22:05:45,866 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 122 flow [2023-08-03 22:05:45,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:45,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:45,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:05:45,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 22:05:46,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:05:46,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 22:05:46,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1183184366, now seen corresponding path program 1 times [2023-08-03 22:05:46,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:46,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385179030] [2023-08-03 22:05:46,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:46,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 22:05:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385179030] [2023-08-03 22:05:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385179030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:05:46,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:05:46,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 22:05:46,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633956514] [2023-08-03 22:05:46,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:05:46,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:05:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:05:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:05:46,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 228 [2023-08-03 22:05:46,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:46,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 228 [2023-08-03 22:05:46,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:46,369 INFO L124 PetriNetUnfolderBase]: 1255/2316 cut-off events. [2023-08-03 22:05:46,369 INFO L125 PetriNetUnfolderBase]: For 1076/1076 co-relation queries the response was YES. [2023-08-03 22:05:46,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5119 conditions, 2316 events. 1255/2316 cut-off events. For 1076/1076 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13990 event pairs, 589 based on Foata normal form. 0/2064 useless extension candidates. Maximal degree in co-relation 5111. Up to 1130 conditions per place. [2023-08-03 22:05:46,378 INFO L140 encePairwiseOnDemand]: 222/228 looper letters, 53 selfloop transitions, 4 changer transitions 3/67 dead transitions. [2023-08-03 22:05:46,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 67 transitions, 330 flow [2023-08-03 22:05:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:05:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:05:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-03 22:05:46,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233918128654971 [2023-08-03 22:05:46,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-03 22:05:46,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-03 22:05:46,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:46,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-03 22:05:46,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,383 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 122 flow. Second operand 3 states and 358 transitions. [2023-08-03 22:05:46,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 67 transitions, 330 flow [2023-08-03 22:05:46,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 67 transitions, 323 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 22:05:46,387 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 154 flow [2023-08-03 22:05:46,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-03 22:05:46,389 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-08-03 22:05:46,389 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 154 flow [2023-08-03 22:05:46,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:46,389 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 22:05:46,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 22:05:46,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 22:05:46,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:46,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1337579208, now seen corresponding path program 1 times [2023-08-03 22:05:46,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:46,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832291114] [2023-08-03 22:05:46,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:46,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 22:05:46,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:46,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832291114] [2023-08-03 22:05:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832291114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 22:05:46,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 22:05:46,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 22:05:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787463467] [2023-08-03 22:05:46,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 22:05:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 22:05:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 22:05:46,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 22:05:46,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 228 [2023-08-03 22:05:46,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:46,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 228 [2023-08-03 22:05:46,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:46,732 INFO L124 PetriNetUnfolderBase]: 1205/2260 cut-off events. [2023-08-03 22:05:46,732 INFO L125 PetriNetUnfolderBase]: For 1382/1382 co-relation queries the response was YES. [2023-08-03 22:05:46,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5567 conditions, 2260 events. 1205/2260 cut-off events. For 1382/1382 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13858 event pairs, 578 based on Foata normal form. 0/2098 useless extension candidates. Maximal degree in co-relation 5557. Up to 1076 conditions per place. [2023-08-03 22:05:46,740 INFO L140 encePairwiseOnDemand]: 222/228 looper letters, 51 selfloop transitions, 5 changer transitions 3/66 dead transitions. [2023-08-03 22:05:46,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 347 flow [2023-08-03 22:05:46,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 22:05:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 22:05:46,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-03 22:05:46,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2023-08-03 22:05:46,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-03 22:05:46,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-03 22:05:46,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:46,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-03 22:05:46,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,745 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 154 flow. Second operand 3 states and 356 transitions. [2023-08-03 22:05:46,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 347 flow [2023-08-03 22:05:46,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 22:05:46,749 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 163 flow [2023-08-03 22:05:46,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-03 22:05:46,750 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-08-03 22:05:46,750 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 163 flow [2023-08-03 22:05:46,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:46,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 22:05:46,751 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 22:05:46,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 22:05:46,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 22:05:46,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 22:05:46,751 INFO L85 PathProgramCache]: Analyzing trace with hash 276395485, now seen corresponding path program 1 times [2023-08-03 22:05:46,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 22:05:46,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680932258] [2023-08-03 22:05:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:46,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 22:05:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:05:46,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 22:05:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680932258] [2023-08-03 22:05:46,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680932258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 22:05:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990611637] [2023-08-03 22:05:46,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 22:05:46,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:05:46,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 22:05:46,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 22:05:46,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 22:05:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 22:05:46,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 22:05:46,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 22:05:46,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-03 22:05:47,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-03 22:05:47,015 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-03 22:05:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:05:47,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 22:05:47,069 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_85 (Array Int Int))) (not (= (select (select (store |c_#pthreadsMutex| |c_~#mutex2~0.base| v_ArrVal_85) |c_~#mutex1~0.base|) |c_~#mutex1~0.offset|) 0))) is different from false [2023-08-03 22:05:47,077 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 22:05:47,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2023-08-03 22:05:47,081 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 25 [2023-08-03 22:05:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 22:05:47,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990611637] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 22:05:47,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 22:05:47,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-03 22:05:47,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696229954] [2023-08-03 22:05:47,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 22:05:47,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 22:05:47,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 22:05:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 22:05:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=45, Unknown=1, NotChecked=14, Total=90 [2023-08-03 22:05:47,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 228 [2023-08-03 22:05:47,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 163 flow. Second operand has 10 states, 10 states have (on average 81.5) internal successors, (815), 10 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:47,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 22:05:47,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 228 [2023-08-03 22:05:47,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 22:05:47,258 INFO L124 PetriNetUnfolderBase]: 428/882 cut-off events. [2023-08-03 22:05:47,258 INFO L125 PetriNetUnfolderBase]: For 758/758 co-relation queries the response was YES. [2023-08-03 22:05:47,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 882 events. 428/882 cut-off events. For 758/758 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4385 event pairs, 87 based on Foata normal form. 138/948 useless extension candidates. Maximal degree in co-relation 2303. Up to 688 conditions per place. [2023-08-03 22:05:47,260 INFO L140 encePairwiseOnDemand]: 221/228 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-08-03 22:05:47,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 274 flow [2023-08-03 22:05:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 22:05:47,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 22:05:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-08-03 22:05:47,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2023-08-03 22:05:47,262 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-08-03 22:05:47,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-08-03 22:05:47,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 22:05:47,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-08-03 22:05:47,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:47,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:47,265 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:47,265 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 163 flow. Second operand 4 states and 360 transitions. [2023-08-03 22:05:47,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 274 flow [2023-08-03 22:05:47,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 251 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-03 22:05:47,267 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-03 22:05:47,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-03 22:05:47,268 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2023-08-03 22:05:47,268 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-03 22:05:47,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 81.5) internal successors, (815), 10 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 22:05:47,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 22:05:47,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 22:05:47,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 22:05:47,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 22:05:47,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 22:05:47,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 22:05:47,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 22:05:47,475 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 22:05:47,475 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-03 22:05:47,477 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 22:05:47,477 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 22:05:47,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 10:05:47 BasicIcfg [2023-08-03 22:05:47,481 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 22:05:47,481 INFO L158 Benchmark]: Toolchain (without parser) took 11952.51ms. Allocated memory was 335.5MB in the beginning and 601.9MB in the end (delta: 266.3MB). Free memory was 279.8MB in the beginning and 437.5MB in the end (delta: -157.7MB). Peak memory consumption was 110.2MB. Max. memory is 16.0GB. [2023-08-03 22:05:47,482 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 287.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 22:05:47,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 352.70ms. Allocated memory is still 335.5MB. Free memory was 279.5MB in the beginning and 260.4MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-03 22:05:47,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.23ms. Allocated memory is still 335.5MB. Free memory was 260.4MB in the beginning and 258.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:05:47,482 INFO L158 Benchmark]: Boogie Preprocessor took 21.54ms. Allocated memory is still 335.5MB. Free memory was 258.3MB in the beginning and 256.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 22:05:47,483 INFO L158 Benchmark]: RCFGBuilder took 343.92ms. Allocated memory was 335.5MB in the beginning and 501.2MB in the end (delta: 165.7MB). Free memory was 256.8MB in the beginning and 462.4MB in the end (delta: -205.6MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. [2023-08-03 22:05:47,483 INFO L158 Benchmark]: TraceAbstraction took 11192.93ms. Allocated memory was 501.2MB in the beginning and 601.9MB in the end (delta: 100.7MB). Free memory was 462.4MB in the beginning and 437.5MB in the end (delta: 24.9MB). Peak memory consumption was 125.8MB. Max. memory is 16.0GB. [2023-08-03 22:05:47,484 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 287.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 352.70ms. Allocated memory is still 335.5MB. Free memory was 279.5MB in the beginning and 260.4MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.23ms. Allocated memory is still 335.5MB. Free memory was 260.4MB in the beginning and 258.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.54ms. Allocated memory is still 335.5MB. Free memory was 258.3MB in the beginning and 256.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 343.92ms. Allocated memory was 335.5MB in the beginning and 501.2MB in the end (delta: 165.7MB). Free memory was 256.8MB in the beginning and 462.4MB in the end (delta: -205.6MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. * TraceAbstraction took 11192.93ms. Allocated memory was 501.2MB in the beginning and 601.9MB in the end (delta: 100.7MB). Free memory was 462.4MB in the beginning and 437.5MB in the end (delta: 24.9MB). Peak memory consumption was 125.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 87 PlacesBefore, 22 PlacesAfterwards, 89 TransitionsBefore, 19 TransitionsAfterwards, 1452 CoEnabledTransitionPairs, 7 FixpointIterations, 32 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 83 TotalNumberOfCompositions, 2877 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1611, independent: 1451, independent conditional: 0, independent unconditional: 1451, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 777, independent: 747, independent conditional: 0, independent unconditional: 747, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1611, independent: 704, independent conditional: 0, independent unconditional: 704, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 777, unknown conditional: 0, unknown unconditional: 777] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 115 PlacesBefore, 42 PlacesAfterwards, 118 TransitionsBefore, 41 TransitionsAfterwards, 4356 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 102 TotalNumberOfCompositions, 12069 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5136, independent: 4867, independent conditional: 0, independent unconditional: 4867, dependent: 269, dependent conditional: 0, dependent unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2271, independent: 2209, independent conditional: 0, independent unconditional: 2209, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5136, independent: 2658, independent conditional: 0, independent unconditional: 2658, dependent: 207, dependent conditional: 0, dependent unconditional: 207, unknown: 2271, unknown conditional: 0, unknown unconditional: 2271] , Statistics on independence cache: Total cache size (in pairs): 177, Positive cache size: 151, Positive conditional cache size: 0, Positive unconditional cache size: 151, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 116 PlacesBefore, 43 PlacesAfterwards, 119 TransitionsBefore, 42 TransitionsAfterwards, 4356 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 109 TotalNumberOfCompositions, 13582 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5506, independent: 5185, independent conditional: 0, independent unconditional: 5185, dependent: 321, dependent conditional: 0, dependent unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2291, independent: 2230, independent conditional: 0, independent unconditional: 2230, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5506, independent: 2955, independent conditional: 0, independent unconditional: 2955, dependent: 260, dependent conditional: 0, dependent unconditional: 260, unknown: 2291, unknown conditional: 0, unknown unconditional: 2291] , Statistics on independence cache: Total cache size (in pairs): 235, Positive cache size: 196, Positive conditional cache size: 0, Positive unconditional cache size: 196, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 112 locations, 5 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: 2.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 134 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 104 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=100occurred 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, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 121 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 134 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.9s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 251 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 183 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 481 IncrementalHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 37 mSDtfsCounter, 481 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 1 QuantifiedInterpolants, 334 SizeOfPredicates, 3 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 9/27 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 22:05:47,508 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...